src/native/native.c

   1 /* native.c - table of native functions
   2
   3    Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
   4    R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser,
   5    M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck,
   6    P. Tomsich, J. Wenninger
   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., 59 Temple Place - Suite 330, Boston, MA
  23    02111-1307, USA.
  24
  25    Contact: cacao@complang.tuwien.ac.at
  26
  27    Authors: Reinhard Grafl
  28             Roman Obermaisser
  29             Andreas Krall
  30
  31    The .hh files created with the header file generator are all
  32    included here as are the C functions implementing these methods.
  33
  34    $Id: native.c 1322 2004-07-17 12:29:18Z motse $
  35
  36 */
  37
  38
  39 #include <stdlib.h>
  40 #include <unistd.h>
  41 #include <time.h>
  42 #include <math.h>
  43 #include <string.h>
  44 #include <assert.h>
  45 #include <sys/time.h>
  46 #include <utime.h>
  47
  48 #include "config.h"
  49 #include "global.h"
  50 #include "options.h"
  51 #include "jni.h"
  52 #include "native.h"
  53 #include "builtin.h"
  54 #include "asmpart.h"
  55 #include "tables.h"
  56 #include "loader.h"
  57 #include "jni.h"
  58 #include "jit/jit.h"
  59 #include "toolbox/logging.h"
  60 #include "toolbox/memory.h"
  61 #include "threads/thread.h"
  62 #include "threads/threadio.h"
  63 #include "threads/locks.h"
  64 #include "nat/java_lang_VMClass.h"
  65 #include "nat/java_lang_Throwable.h"
  66
  67 /* Include files for IO functions */
  68
  69 #include <fcntl.h>
  70 #include <dirent.h>
  71 #include <sys/types.h>
  72 #ifdef _OSF_SOURCE
  73 #include <sys/mode.h>
  74 #endif
  75 #include <sys/stat.h>
  76
  77 #include "threads/threadio.h"
  78
  79 /* include table of native functions */
  80
  81 #include "nativetable.inc"
  82
  83
  84 /* searchpath for classfiles */
  85 char *classpath;
  86
  87 /* for java-string to char conversion */
  88 #define MAXSTRINGSIZE 1000
  89
  90
  91 /******************** systemclasses required for native methods ***************/
  92
  93 classinfo *class_java_lang_Class;
  94 classinfo *class_java_lang_VMClass;
  95 classinfo *class_java_lang_System;
  96 classinfo *class_java_lang_ClassLoader;
  97 classinfo *class_gnu_java_lang_SystemClassLoader;
  98 classinfo *class_java_lang_SecurityManager;
  99 classinfo *class_java_lang_Double;
 100 classinfo *class_java_lang_Float;
 101 classinfo *class_java_lang_Long;
 102 classinfo *class_java_lang_Byte;
 103 classinfo *class_java_lang_Short;
 104 classinfo *class_java_lang_Boolean;
 105 classinfo *class_java_lang_Void;
 106 classinfo *class_java_lang_Character;
 107 classinfo *class_java_lang_Integer;
 108
 109 methodinfo *method_vmclass_init;
 110
 111
 112 /* system exception classes required in cacao */
 113
 114 classinfo *class_java_lang_Throwable;
 115 classinfo *class_java_lang_Exception;
 116 classinfo *class_java_lang_Error;
 117
 118
 119 /* exception/error super class */
 120
 121 char *string_java_lang_Throwable =
 122     "java/lang/Throwable";
 123
 124 char *string_java_lang_VMThrowable =
 125     "java/lang/VMThrowable";
 126
 127
 128 /* specify some exception strings for code generation */
 129
 130 char *string_java_lang_ArithmeticException =
 131     "java/lang/ArithmeticException";
 132
 133 char *string_java_lang_ArithmeticException_message =
 134     "/ by zero";
 135
 136 char *string_java_lang_ArrayIndexOutOfBoundsException =
 137     "java/lang/ArrayIndexOutOfBoundsException";
 138
 139 char *string_java_lang_ArrayStoreException =
 140     "java/lang/ArrayStoreException";
 141
 142 char *string_java_lang_ClassCastException =
 143     "java/lang/ClassCastException";
 144
 145 char *string_java_lang_ClassNotFoundException =
 146         "java/lang/ClassNotFoundException";
 147
 148 char *string_java_lang_CloneNotSupportedException =
 149     "java/lang/CloneNotSupportedException";
 150
 151 char *string_java_lang_Exception =
 152     "java/lang/Exception";
 153
 154 char *string_java_lang_IllegalArgumentException =
 155     "java/lang/IllegalArgumentException";
 156
 157 char *string_java_lang_IllegalMonitorStateException =
 158     "java/lang/IllegalMonitorStateException";
 159
 160 char *string_java_lang_NegativeArraySizeException =
 161     "java/lang/NegativeArraySizeException";
 162
 163 char *string_java_lang_NoSuchFieldException =
 164         "java/lang/NoSuchFieldException";
 165
 166 char *string_java_lang_NoSuchMethodException =
 167         "java/lang/NoSuchMethodException";
 168
 169 char *string_java_lang_NullPointerException =
 170     "java/lang/NullPointerException";
 171
 172
 173 /* specify some error strings for code generation */
 174
 175 char *string_java_lang_AbstractMethodError =
 176     "java/lang/AbstractMethodError";
 177
 178 char *string_java_lang_ClassCircularityError =
 179     "java/lang/ClassCircularityError";
 180
 181 char *string_java_lang_ClassFormatError =
 182     "java/lang/ClassFormatError";
 183
 184 char *string_java_lang_Error =
 185     "java/lang/Error";
 186
 187 char *string_java_lang_ExceptionInInitializerError =
 188     "java/lang/ExceptionInInitializerError";
 189
 190 char *string_java_lang_IncompatibleClassChangeError =
 191     "java/lang/IncompatibleClassChangeError";
 192
 193 char *string_java_lang_InternalError =
 194     "java/lang/InternalError";
 195
 196 char *string_java_lang_LinkageError =
 197     "java/lang/LinkageError";
 198
 199 char *string_java_lang_NoClassDefFoundError =
 200     "java/lang/NoClassDefFoundError";
 201
 202 char *string_java_lang_NoSuchFieldError =
 203         "java/lang/NoSuchFieldError";
 204
 205 char *string_java_lang_NoSuchMethodError =
 206         "java/lang/NoSuchMethodError";
 207
 208 char *string_java_lang_OutOfMemoryError =
 209     "java/lang/OutOfMemoryError";
 210
 211 char *string_java_lang_VerifyError =
 212     "java/lang/VerifyError";
 213
 214 char *string_java_lang_VirtualMachineError =
 215     "java/lang/VirtualMachineError";
 216
 217
 218 /* the system classloader object */
 219 struct java_lang_ClassLoader *SystemClassLoader = NULL;
 220
 221 /* for raising exceptions from native methods */
 222 #if !defined(USE_THREADS) || !defined(NATIVE_THREADS)
 223 java_objectheader* _exceptionptr = NULL;
 224 #endif
 225
 226 /************* use classinfo structure as java.lang.Class object **************/
 227
 228 void use_class_as_object(classinfo *c)
 229 {
 230         if (!c->classvftbl) {
 231                 c->header.vftbl = class_java_lang_Class->vftbl;
 232                 c->classvftbl = true;
 233         }
 234
 235 }
 236
 237
 238 /*************************** include native methods ***************************/
 239
 240 #ifdef USE_GTK
 241 #include "nat/GdkGraphics.c"
 242 #include "nat/GtkComponentPeer.c"
 243 #include "nat/GdkPixbufDecoder.c"
 244 #include "nat/GtkScrollPanePeer.c"
 245 #include "nat/GtkFileDialogPeer.c"
 246 #endif
 247
 248
 249 /************************** tables for methods ********************************/
 250
 251 #undef JOWENN_DEBUG
 252 #undef JOWENN_DEBUG1
 253
 254 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
 255
 256 /* table for fast string comparison */
 257 static nativecompref nativecomptable[NATIVETABLESIZE];
 258
 259 /* string comparsion table initialized */
 260 static bool nativecompdone = false;
 261
 262
 263 /******************************************************************************/
 264 /******************************************************************************/
 265 #include "natcalls.h"
 266
 267 /* string call comparison table initialized */
 268
 269 /******************************************************************************/
 270 /******************************************************************************/
 271
 272 /* init_system_exceptions *****************************************************
 273
 274    load, link and compile exceptions used in the system
 275
 276 *******************************************************************************/
 277
 278 void init_system_exceptions()
 279 {
 280         /* java/lang/Throwable */
 281
 282         class_java_lang_Throwable =
 283                 class_new(utf_new_char(string_java_lang_Throwable));
 284         class_load(class_java_lang_Throwable);
 285         class_link(class_java_lang_Throwable);
 286
 287         /* java/lang/Exception */
 288
 289         class_java_lang_Exception =
 290                 class_new(utf_new_char(string_java_lang_Exception));
 291         class_load(class_java_lang_Exception);
 292         class_link(class_java_lang_Exception);
 293
 294         /* java/lang/Error */
 295
 296         class_java_lang_Error =
 297                 class_new(utf_new_char(string_java_lang_Error));
 298         class_load(class_java_lang_Error);
 299         class_link(class_java_lang_Error);
 300 }
 301
 302
 303 void compile_all_class_methods(classinfo *c)
 304 {
 305         s4 i;
 306
 307         for (i = 0; i < c->methodscount; i++) {
 308                 (void) jit_compile(&(c->methods[i]));
 309         }
 310 }
 311
 312
 313 static void throw_exception_exit_intern(bool doexit)
 314 {
 315         java_objectheader *xptr;
 316         classinfo *c;
 317         methodinfo *pss;
 318
 319         if (*exceptionptr) {
 320                 xptr = *exceptionptr;
 321
 322                 /* clear exception, because we are calling jit code again */
 323                 *exceptionptr = NULL;
 324
 325                 c = xptr->vftbl->class;
 326
 327                 pss = class_resolveclassmethod(c,
 328                                                                            utf_new_char("printStackTrace"),
 329                                                                            utf_new_char("()V"),
 330                                                                            class_java_lang_Object,
 331                                                                            false);
 332
 333                 /* print the stacktrace */
 334                 if (pss) {
 335                         asm_calljavafunction(pss, xptr, NULL, NULL, NULL);
 336
 337                         /* this normally means, we are EXTREMLY out of memory, but may be
 338                            any other exception */
 339                         if (*exceptionptr) {
 340                                 utf_fprint_classname(stderr, c->name);
 341                                 fprintf(stderr, "\n");
 342                         }
 343
 344                 } else {
 345                         utf_fprint_classname(stderr, c->name);
 346                         fprintf(stderr, ": printStackTrace()V not found!\n");
 347                 }
 348
 349                 fflush(stderr);
 350
 351                 /* good bye! */
 352                 if (doexit) {
 353                         exit(1);
 354                 }
 355         }
 356 }
 357
 358
 359 void throw_exception()
 360 {
 361         throw_exception_exit_intern(false);
 362 }
 363
 364
 365 void throw_exception_exit()
 366 {
 367         throw_exception_exit_intern(true);
 368 }
 369
 370
 371 void throw_main_exception()
 372 {
 373         fprintf(stderr, "Exception in thread \"main\" ");
 374         fflush(stderr);
 375
 376         throw_exception_exit_intern(false);
 377 }
 378
 379
 380 void throw_main_exception_exit()
 381 {
 382         fprintf(stderr, "Exception in thread \"main\" ");
 383         fflush(stderr);
 384
 385         throw_exception_exit_intern(true);
 386 }
 387
 388
 389 void throw_cacao_exception_exit(char *exception, char *message)
 390 {
 391         s4 i;
 392         char *tmp;
 393         s4 len;
 394
 395         len = strlen(exception);
 396         tmp = MNEW(char, len);
 397         strncpy(tmp, exception, len);
 398
 399         /* convert to classname */
 400
 401         for (i = len - 1; i >= 0; i--) {
 402                 if (tmp[i] == '/') tmp[i] = '.';
 403         }
 404
 405         fprintf(stderr, "Exception in thread \"main\" %s", tmp);
 406
 407         MFREE(tmp, char, len);
 408
 409         if (strlen(message) > 0)
 410                 fprintf(stderr, ": %s", message);
 411
 412         fprintf(stderr, "\n");
 413         fflush(stderr);
 414
 415         /* good bye! */
 416         exit(1);
 417 }
 418
 419
 420 #define CREATENEW_EXCEPTION(ex) \
 421         java_objectheader *newEx; \
 422         java_objectheader *oldexception=*exceptionptr;\
 423         *exceptionptr=0;\
 424         newEx=ex;\
 425         *exceptionptr=oldexception;\
 426         return newEx;
 427
 428 java_objectheader *new_exception(char *classname)
 429 {
 430         classinfo *c = class_new(utf_new_char(classname));
 431
 432         CREATENEW_EXCEPTION(native_new_and_init(c));
 433 }
 434
 435 java_objectheader *new_exception_message(char *classname, char *message)
 436 {
 437         classinfo *c = class_new(utf_new_char(classname));
 438
 439         CREATENEW_EXCEPTION(native_new_and_init_string(c, javastring_new_char(message)));
 440 }
 441
 442
 443 java_objectheader *new_exception_throwable(char *classname, java_lang_Throwable *throwable)
 444 {
 445         classinfo *c = class_new(utf_new_char(classname));
 446
 447         CREATENEW_EXCEPTION(native_new_and_init_throwable(c, throwable));
 448 }
 449
 450
 451 java_objectheader *new_exception_utfmessage(char *classname, utf *message)
 452 {
 453         classinfo *c = class_new(utf_new_char(classname));
 454
 455         CREATENEW_EXCEPTION(native_new_and_init_string(c, javastring_new(message)));
 456 }
 457
 458
 459 java_objectheader *new_exception_javastring(char *classname, java_lang_String *message)
 460 {
 461         classinfo *c = class_new(utf_new_char(classname));
 462
 463         CREATENEW_EXCEPTION(native_new_and_init_string(c, message));
 464 }
 465
 466
 467 java_objectheader *new_exception_int(char *classname, s4 i)
 468 {
 469         classinfo *c = class_new(utf_new_char(classname));
 470
 471         CREATENEW_EXCEPTION(native_new_and_init_int(c, i));
 472 }
 473
 474
 475 /*********************** function: native_loadclasses **************************
 476
 477         load classes required for native methods
 478
 479 *******************************************************************************/
 480
 481 void native_loadclasses()
 482 {
 483         static int classesLoaded = 0; /*temporary hack JoWenn*/
 484
 485         if (classesLoaded)
 486                 return;
 487
 488         classesLoaded = 1;
 489
 490         class_java_lang_Cloneable =
 491                 class_new(utf_new_char("java/lang/Cloneable"));
 492         class_load(class_java_lang_Cloneable);
 493         class_link(class_java_lang_Cloneable);
 494
 495         class_java_lang_Class =
 496                 class_new(utf_new_char("java/lang/Class"));
 497         class_load(class_java_lang_Class);
 498         class_link(class_java_lang_Class);
 499
 500         class_java_lang_VMClass =
 501                 class_new(utf_new_char("java/lang/VMClass"));
 502         class_load(class_java_lang_VMClass);
 503         class_link(class_java_lang_VMClass);
 504
 505         class_java_lang_ClassLoader =
 506                 class_new(utf_new_char("java/lang/ClassLoader"));
 507         class_load(class_java_lang_ClassLoader);
 508         class_link(class_java_lang_ClassLoader);
 509
 510         /* load classes for wrapping primitive types */
 511         class_java_lang_Double = class_new(utf_new_char("java/lang/Double"));
 512         class_load(class_java_lang_Double);
 513         class_link(class_java_lang_Double);
 514
 515         class_java_lang_Float = class_new(utf_new_char("java/lang/Float"));
 516         class_load(class_java_lang_Float);
 517         class_link(class_java_lang_Float);
 518
 519         class_java_lang_Character =     class_new(utf_new_char("java/lang/Character"));
 520         class_load(class_java_lang_Character);
 521         class_link(class_java_lang_Character);
 522
 523         class_java_lang_Integer = class_new(utf_new_char("java/lang/Integer"));
 524         class_load(class_java_lang_Integer);
 525         class_link(class_java_lang_Integer);
 526
 527         class_java_lang_Long = class_new(utf_new_char("java/lang/Long"));
 528         class_load(class_java_lang_Long);
 529         class_link(class_java_lang_Long);
 530
 531         class_java_lang_Byte = class_new(utf_new_char("java/lang/Byte"));
 532         class_load(class_java_lang_Byte);
 533         class_link(class_java_lang_Byte);
 534
 535         class_java_lang_Short = class_new(utf_new_char("java/lang/Short"));
 536         class_load(class_java_lang_Short);
 537         class_link(class_java_lang_Short);
 538
 539         class_java_lang_Boolean = class_new(utf_new_char("java/lang/Boolean"));
 540         class_load(class_java_lang_Boolean);
 541         class_link(class_java_lang_Boolean);
 542
 543         class_java_lang_Void = class_new(utf_new_char("java/lang/Void"));
 544         class_load(class_java_lang_Void);
 545         class_link(class_java_lang_Void);
 546
 547 }
 548
 549
 550 /*****************************************************************************
 551
 552         create systemclassloader object and initialize instance fields
 553
 554 ******************************************************************************/
 555
 556 void init_systemclassloader()
 557 {
 558         log_text("init_systemclassloader");
 559         if (!SystemClassLoader) {
 560                 native_loadclasses();
 561                 log_text("Initializing new system class loader");
 562                 /* create object and call initializer */
 563                 SystemClassLoader = (java_lang_ClassLoader *) native_new_and_init(class_new(utf_new_char("gnu/java/lang/SystemClassLoader")));
 564
 565                 /* systemclassloader has no parent */
 566                 SystemClassLoader->parent      = NULL;
 567                 SystemClassLoader->initialized = true;
 568         }
 569         log_text("leaving system class loader");
 570 }
 571
 572
 573 /********************* function: native_setclasspath **************************/
 574
 575 void native_setclasspath(char *path)
 576 {
 577         /* set searchpath for classfiles */
 578         classpath = path;
 579 }
 580
 581
 582 /*********************** Function: native_findfunction *************************
 583
 584         Looks up a method (must have the same class name, method name, descriptor
 585         and 'static'ness) and returns a function pointer to it.
 586         Returns: function pointer or NULL (if there is no such method)
 587
 588         Remark: For faster operation, the names/descriptors are converted from C
 589                 strings to Unicode the first time this function is called.
 590
 591 *******************************************************************************/
 592
 593 functionptr native_findfunction(utf *cname, utf *mname,
 594                                                                 utf *desc, bool isstatic)
 595 {
 596         int i;
 597         /* entry of table for fast string comparison */
 598         struct nativecompref *n;
 599         /* for warning message if no function is found */
 600         char *buffer;
 601         int buffer_len;
 602
 603         isstatic = isstatic ? true : false;
 604
 605         if (!nativecompdone) {
 606                 for (i = 0; i < NATIVETABLESIZE; i++) {
 607                         nativecomptable[i].classname  =
 608                                 utf_new_char(nativetable[i].classname);
 609                         nativecomptable[i].methodname =
 610                                 utf_new_char(nativetable[i].methodname);
 611                         nativecomptable[i].descriptor =
 612                                 utf_new_char(nativetable[i].descriptor);
 613                         nativecomptable[i].isstatic   =
 614                                 nativetable[i].isstatic;
 615                         nativecomptable[i].func       =
 616                                 nativetable[i].func;
 617                 }
 618                 nativecompdone = true;
 619         }
 620
 621 #ifdef JOWENN_DEBUG
 622         buffer_len =
 623                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 624
 625         buffer = MNEW(char, buffer_len);
 626
 627         strcpy(buffer, "searching matching function in native table:");
 628         utf_sprint(buffer+strlen(buffer), mname);
 629         strcpy(buffer+strlen(buffer), ": ");
 630         utf_sprint(buffer+strlen(buffer), desc);
 631         strcpy(buffer+strlen(buffer), " for class ");
 632         utf_sprint(buffer+strlen(buffer), cname);
 633
 634         log_text(buffer);
 635
 636         MFREE(buffer, char, buffer_len);
 637 #endif
 638
 639         for (i = 0; i < NATIVETABLESIZE; i++) {
 640                 n = &(nativecomptable[i]);
 641
 642                 if (cname == n->classname && mname == n->methodname &&
 643                     desc == n->descriptor && isstatic == n->isstatic)
 644                         return n->func;
 645 #ifdef JOWENN_DEBUG
 646                         else {
 647                                 if (cname == n->classname && mname == n->methodname )  log_text("static and descriptor mismatch");
 648
 649                                 else {
 650                                         buffer_len =
 651                                           utf_strlen(n->classname) + utf_strlen(n->methodname) + utf_strlen(n->descriptor) + 64;
 652
 653                                         buffer = MNEW(char, buffer_len);
 654
 655                                         strcpy(buffer, "comparing with:");
 656                                         utf_sprint(buffer+strlen(buffer), n->methodname);
 657                                         strcpy (buffer+strlen(buffer), ": ");
 658                                         utf_sprint(buffer+strlen(buffer), n->descriptor);
 659                                         strcpy(buffer+strlen(buffer), " for class ");
 660                                         utf_sprint(buffer+strlen(buffer), n->classname);
 661
 662                                         log_text(buffer);
 663
 664                                         MFREE(buffer, char, buffer_len);
 665                                 }
 666                         }
 667 #endif
 668         }
 669
 670
 671         /* no function was found, display warning */
 672
 673         buffer_len =
 674                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 675
 676         buffer = MNEW(char, buffer_len);
 677
 678         strcpy(buffer, "warning: native function ");
 679         utf_sprint(buffer + strlen(buffer), mname);
 680         strcpy(buffer + strlen(buffer), ": ");
 681         utf_sprint(buffer + strlen(buffer), desc);
 682         strcpy(buffer + strlen(buffer), " not found in class ");
 683         utf_sprint(buffer + strlen(buffer), cname);
 684
 685         log_text(buffer);
 686
 687         MFREE(buffer, char, buffer_len);
 688
 689 /*      exit(1); */
 690
 691         /* keep compiler happy */
 692         return NULL;
 693 }
 694
 695
 696 /********************** function: javastring_new *******************************
 697
 698         creates a new object of type java/lang/String with the text of
 699         the specified utf8-string
 700
 701         return: pointer to the string or NULL if memory is exhausted.
 702
 703 *******************************************************************************/
 704
 705 java_lang_String *javastring_new(utf *u)
 706 {
 707         char *utf_ptr = u->text;        /* current utf character in utf string    */
 708         int utflength = utf_strlen(u);  /* length of utf-string if uncompressed   */
 709         java_lang_String *s;                /* result-string                          */
 710         java_chararray *a;
 711         s4 i;
 712
 713         s = (java_lang_String *) builtin_new(class_java_lang_String);
 714         a = builtin_newarray_char(utflength);
 715
 716         /* javastring or character-array could not be created */
 717         if (!a || !s)
 718                 return NULL;
 719
 720         /* decompress utf-string */
 721         for (i = 0; i < utflength; i++)
 722                 a->data[i] = utf_nextu2(&utf_ptr);
 723
 724         /* set fields of the javastring-object */
 725         s->value  = a;
 726         s->offset = 0;
 727         s->count  = utflength;
 728
 729         return s;
 730 }
 731
 732
 733 /********************** function: javastring_new_char **************************
 734
 735         creates a new java/lang/String object which contains the convertet
 736         C-string passed via text.
 737
 738         return: the object pointer or NULL if memory is exhausted.
 739
 740 *******************************************************************************/
 741
 742 java_lang_String *javastring_new_char(char *text)
 743 {
 744         s4 i;
 745         s4 len = strlen(text); /* length of the string */
 746         java_lang_String *s;   /* result-string */
 747         java_chararray *a;
 748
 749         s = (java_lang_String *) builtin_new(class_java_lang_String);
 750         a = builtin_newarray_char(len);
 751
 752         /* javastring or character-array could not be created */
 753         if (!a || !s)
 754                 return NULL;
 755
 756         /* copy text */
 757         for (i = 0; i < len; i++)
 758                 a->data[i] = text[i];
 759
 760         /* set fields of the javastring-object */
 761         s->value  = a;
 762         s->offset = 0;
 763         s->count  = len;
 764
 765         return s;
 766 }
 767
 768
 769 /************************* function javastring_tochar **************************
 770
 771         converts a Java string into a C string.
 772
 773         return: pointer to C string
 774
 775         Caution: every call of this function overwrites the previous string !!!
 776
 777 *******************************************************************************/
 778
 779 static char stringbuffer[MAXSTRINGSIZE];
 780
 781 char *javastring_tochar(java_objectheader *so)
 782 {
 783         java_lang_String *s = (java_lang_String *) so;
 784         java_chararray *a;
 785         s4 i;
 786
 787         if (!s)
 788                 return "";
 789
 790         a = s->value;
 791
 792         if (!a)
 793                 return "";
 794
 795         if (s->count > MAXSTRINGSIZE)
 796                 return "";
 797
 798         for (i = 0; i < s->count; i++)
 799                 stringbuffer[i] = a->data[s->offset + i];
 800
 801         stringbuffer[i] = '\0';
 802
 803         return stringbuffer;
 804 }
 805
 806
 807 /****************** function class_findfield_approx ****************************
 808
 809         searches in 'classinfo'-structure for a field with the
 810         specified name
 811
 812 *******************************************************************************/
 813
 814 fieldinfo *class_findfield_approx(classinfo *c, utf *name)
 815 {
 816         s4 i;
 817
 818         for (i = 0; i < c->fieldscount; i++) {
 819                 /* compare field names */
 820                 if ((c->fields[i].name == name))
 821                         return &(c->fields[i]);
 822         }
 823
 824         /* field was not found, raise exception */
 825         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 826
 827         return NULL;
 828 }
 829
 830
 831 s4 class_findfield_index_approx(classinfo *c, utf *name)
 832 {
 833         s4 i;
 834
 835         for (i = 0; i < c->fieldscount; i++) {
 836                 /* compare field names */
 837                 if ((c->fields[i].name == name))
 838                         return i;
 839         }
 840
 841         /* field was not found, raise exception */
 842         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 843
 844         return -1;
 845 }
 846
 847
 848 /********************** function: native_new_and_init *************************
 849
 850         Creates a new object on the heap and calls the initializer.
 851         Returns the object pointer or NULL if memory is exhausted.
 852
 853 *******************************************************************************/
 854
 855 java_objectheader *native_new_and_init(classinfo *c)
 856 {
 857         methodinfo *m;
 858         java_objectheader *o;
 859
 860         if (!c)
 861                 return *exceptionptr;
 862
 863         o = builtin_new(c);                 /* create object                      */
 864
 865         if (!o)
 866                 return NULL;
 867
 868         /* find initializer */
 869
 870         m = class_findmethod(c,
 871                                                  utf_new_char("<init>"),
 872                                                  utf_new_char("()V"));
 873
 874         if (!m) {                           /* initializer not found              */
 875                 if (verbose) {
 876                         char logtext[MAXLOGTEXT];
 877                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 878                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 879                         log_text(logtext);
 880                 }
 881                 return o;
 882         }
 883
 884         /* call initializer */
 885
 886         asm_calljavafunction(m, o, NULL, NULL, NULL);
 887
 888         return o;
 889 }
 890
 891
 892 java_objectheader *native_new_and_init_string(classinfo *c, java_lang_String *s)
 893 {
 894         methodinfo *m;
 895         java_objectheader *o;
 896
 897         if (!c)
 898                 return *exceptionptr;
 899
 900         o = builtin_new(c);          /* create object          */
 901
 902         if (!o)
 903                 return NULL;
 904
 905         /* find initializer */
 906
 907         m = class_findmethod(c,
 908                                                  utf_new_char("<init>"),
 909                                                  utf_new_char("(Ljava/lang/String;)V"));
 910
 911         if (!m) {                                       /* initializer not found  */
 912                 if (verbose) {
 913                         char logtext[MAXLOGTEXT];
 914                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 915                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 916                         log_text(logtext);
 917                 }
 918                 return o;
 919         }
 920
 921         /* call initializer */
 922
 923         asm_calljavafunction(m, o, s, NULL, NULL);
 924
 925         return o;
 926 }
 927
 928
 929 java_objectheader *native_new_and_init_int(classinfo *c, s4 i)
 930 {
 931         methodinfo *m;
 932         java_objectheader *o;
 933
 934         if (!c)
 935                 return *exceptionptr;
 936
 937         o = builtin_new(c);          /* create object          */
 938
 939         if (!o) return NULL;
 940
 941         /* find initializer */
 942
 943         m = class_findmethod(c,
 944                                                  utf_new_char("<init>"),
 945                                                  utf_new_char("(I)V"));
 946
 947         if (!m) {                                       /* initializer not found  */
 948                 if (verbose) {
 949                         char logtext[MAXLOGTEXT];
 950                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 951                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 952                         log_text(logtext);
 953                 }
 954                 return o;
 955         }
 956
 957         /* call initializer */
 958
 959 #if defined(__I386__) || defined(__POWERPC__)
 960         asm_calljavafunction(m, o, (void *) i, NULL, NULL);
 961 #else
 962         asm_calljavafunction(m, o, (void *) (s8) i, NULL, NULL);
 963 #endif
 964
 965         return o;
 966 }
 967
 968
 969 java_objectheader *native_new_and_init_throwable(classinfo *c, java_lang_Throwable *t)
 970 {
 971         methodinfo *m;
 972         java_objectheader *o;
 973
 974         if (!c)
 975                 return *exceptionptr;
 976
 977         o = builtin_new(c);          /* create object          */
 978
 979         if (!o) return NULL;
 980
 981         /* find initializer */
 982
 983         m = class_findmethod(c,
 984                                                  utf_new_char("<init>"),
 985                                                  utf_new_char("(Ljava/lang/Throwable;)V"));
 986
 987         if (!m) {                                       /* initializer not found  */
 988                 if (verbose) {
 989                         char logtext[MAXLOGTEXT];
 990                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 991                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 992                         log_text(logtext);
 993                 }
 994                 return o;
 995         }
 996
 997         /* call initializer */
 998
 999         asm_calljavafunction(m, o, t, NULL, NULL);
1000
1001         return o;
1002 }
1003
1004
1005 /******************** function: stringtable_update ****************************
1006
1007         traverses the javastring hashtable and sets the vftbl-entries of
1008         javastrings which were temporarily set to NULL, because
1009         java.lang.Object was not yet loaded
1010
1011 *******************************************************************************/
1012
1013 void stringtable_update ()
1014 {
1015         java_lang_String *js;
1016         java_chararray *a;
1017         literalstring *s;       /* hashtable entry */
1018         int i;
1019
1020         for (i = 0; i < string_hash.size; i++) {
1021                 s = string_hash.ptr[i];
1022                 if (s) {
1023                         while (s) {
1024
1025                                 js = (java_lang_String *) s->string;
1026
1027                                 if (!js || !js->value)
1028                                         /* error in hashtable found */
1029                                         panic("invalid literalstring in hashtable");
1030
1031                                 a = js->value;
1032
1033                                 if (!js->header.vftbl)
1034                                         /* vftbl of javastring is NULL */
1035                                         js->header.vftbl = class_java_lang_String->vftbl;
1036
1037                                 if (!a->header.objheader.vftbl)
1038                                         /* vftbl of character-array is NULL */
1039                                         a->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1040
1041                                 /* follow link in external hash chain */
1042                                 s = s->hashlink;
1043                         }
1044                 }
1045         }
1046 }
1047
1048
1049 /************************* function: u2_utflength ***************************
1050
1051         returns the utf length in bytes of a u2 array
1052
1053 *****************************************************************************/
1054
1055 u4 u2_utflength(u2 *text, u4 u2_length)
1056 {
1057         u4 result_len =  0;  /* utf length in bytes  */
1058         u2 ch;               /* current unicode character */
1059         u4 len;
1060
1061         for (len = 0; len < u2_length; len++) {
1062                 /* next unicode character */
1063                 ch = *text++;
1064
1065                 /* determine bytes required to store unicode character as utf */
1066                 if (ch && (ch < 0x80))
1067                         result_len++;
1068                 else if (ch < 0x800)
1069                         result_len += 2;
1070                 else
1071                         result_len += 3;
1072         }
1073
1074     return result_len;
1075 }
1076
1077
1078 /********************* function: utf_new_u2 ***********************************
1079
1080         make utf symbol from u2 array,
1081         if isclassname is true '.' is replaced by '/'
1082
1083 *******************************************************************************/
1084
1085 utf *utf_new_u2(u2 *unicode_pos, u4 unicode_length, bool isclassname)
1086 {
1087         char *buffer; /* memory buffer for  unicode characters */
1088         char *pos;    /* pointer to current position in buffer */
1089         u4 left;      /* unicode characters left */
1090         u4 buflength; /* utf length in bytes of the u2 array  */
1091         utf *result;  /* resulting utf-string */
1092         int i;
1093
1094         /* determine utf length in bytes and allocate memory */
1095         /* printf("utf_new_u2: unicode_length=%d\n",unicode_length);            */
1096         buflength = u2_utflength(unicode_pos, unicode_length);
1097         buffer    = MNEW(char, buflength);
1098
1099         left = buflength;
1100         pos  = buffer;
1101
1102         for (i = 0; i++ < unicode_length; unicode_pos++) {
1103                 /* next unicode character */
1104                 u2 c = *unicode_pos;
1105
1106                 if ((c != 0) && (c < 0x80)) {
1107                         /* 1 character */
1108                         left--;
1109                 if ((int) left < 0) break;
1110                         /* convert classname */
1111                         if (isclassname && c == '.')
1112                                 *pos++ = '/';
1113                         else
1114                                 *pos++ = (char) c;
1115
1116                 } else if (c < 0x800) {
1117                         /* 2 characters */
1118                 unsigned char high = c >> 6;
1119                 unsigned char low  = c & 0x3F;
1120                         left = left - 2;
1121                 if ((int) left < 0) break;
1122                 *pos++ = high | 0xC0;
1123                 *pos++ = low  | 0x80;
1124
1125                 } else {
1126                 /* 3 characters */
1127                 char low  = c & 0x3f;
1128                 char mid  = (c >> 6) & 0x3F;
1129                 char high = c >> 12;
1130                         left = left - 3;
1131                 if ((int) left < 0) break;
1132                 *pos++ = high | 0xE0;
1133                 *pos++ = mid  | 0x80;
1134                 *pos++ = low  | 0x80;
1135                 }
1136         }
1137
1138         /* insert utf-string into symbol-table */
1139         result = utf_new(buffer,buflength);
1140
1141         MFREE(buffer, char, buflength);
1142
1143         return result;
1144 }
1145
1146
1147 /********************* function: javastring_toutf *****************************
1148
1149         make utf symbol from javastring
1150
1151 *******************************************************************************/
1152
1153 utf *javastring_toutf(java_lang_String *string, bool isclassname)
1154 {
1155         java_lang_String *str = (java_lang_String *) string;
1156
1157 /*      printf("javastring_toutf offset: %d, len %d\n",str->offset, str->count); */
1158 /*      fflush(stdout); */
1159
1160         return utf_new_u2(str->value->data + str->offset, str->count, isclassname);
1161 }
1162
1163
1164 /********************* function: literalstring_u2 *****************************
1165
1166     searches for the javastring with the specified u2-array in
1167     the string hashtable, if there is no such string a new one is
1168     created
1169
1170     if copymode is true a copy of the u2-array is made
1171
1172 *******************************************************************************/
1173
1174 java_objectheader *literalstring_u2(java_chararray *a, u4 length, u4 offset,
1175                                                                         bool copymode)
1176 {
1177     literalstring *s;                /* hashtable element */
1178     java_lang_String *js;            /* u2-array wrapped in javastring */
1179     java_chararray *stringdata;      /* copy of u2-array */
1180         classinfo *c;
1181     u4 key;
1182     u4 slot;
1183     u2 i;
1184
1185 //#define DEBUG_LITERALSTRING_U2
1186 #ifdef DEBUG_LITERALSTRING_U2
1187     printf("literalstring_u2: length=%d, offset=%d\n", length, offset);
1188         fflush(stdout);
1189 #endif
1190
1191     /* find location in hashtable */
1192     key  = unicode_hashkey(a->data + offset, length);
1193     slot = key & (string_hash.size - 1);
1194     s    = string_hash.ptr[slot];
1195
1196     while (s) {
1197                 js = (java_lang_String *) s->string;
1198
1199                 if (length == js->count) {
1200                         /* compare text */
1201                         for (i = 0; i < length; i++) {
1202                                 if (a->data[offset + i] != js->value->data[i])
1203                                         goto nomatch;
1204                         }
1205
1206                         /* string already in hashtable, free memory */
1207                         if (!copymode)
1208                                 lit_mem_free(a, sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10);
1209
1210 #ifdef DEBUG_LITERALSTRING_U2
1211                         printf("literalstring_u2: foundentry at %p\n", js);
1212                         utf_display(javastring_toutf(js, 0));
1213                         printf("\n\n");
1214                         fflush(stdout);
1215 #endif
1216                         return (java_objectheader *) js;
1217                 }
1218
1219         nomatch:
1220                 /* follow link in external hash chain */
1221                 s = s->hashlink;
1222     }
1223
1224     if (copymode) {
1225                 /* create copy of u2-array for new javastring */
1226                 u4 arraysize = sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10;
1227                 stringdata = lit_mem_alloc(arraysize);
1228 /*              memcpy(stringdata, a, arraysize); */
1229                 memcpy(&(stringdata->header), &(a->header), sizeof(java_arrayheader));
1230                 memcpy(&(stringdata->data), &(a->data) + offset, sizeof(u2) * (length - 1) + 10);
1231
1232     } else {
1233                 stringdata = a;
1234         }
1235
1236     /* location in hashtable found, complete arrayheader */
1237     stringdata->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1238     stringdata->header.size = length;
1239
1240         /* if we use eager loading, we have to check loaded String class */
1241         if (opt_eager) {
1242                 class_java_lang_String =
1243                         class_new_intern(utf_new_char("java/lang/String"));
1244
1245                 if (!class_load(class_java_lang_String))
1246                         return NULL;
1247
1248                 list_addfirst(&unlinkedclasses, class_java_lang_String);
1249         }
1250
1251     /* create new javastring */
1252     js = LNEW(java_lang_String);
1253         js->header.vftbl = class_java_lang_String->vftbl;
1254     js->value  = stringdata;
1255     js->offset = 0;
1256     js->count  = length;
1257
1258 #ifdef DEBUG_LITERALSTRING_U2
1259         printf("literalstring_u2: newly created at %p\n", js);
1260         utf_display(javastring_toutf(js, 0));
1261         printf("\n\n");
1262         fflush(stdout);
1263 #endif
1264
1265     /* create new literalstring */
1266     s = NEW(literalstring);
1267     s->hashlink = string_hash.ptr[slot];
1268     s->string   = (java_objectheader *) js;
1269     string_hash.ptr[slot] = s;
1270
1271     /* update number of hashtable entries */
1272     string_hash.entries++;
1273
1274     /* reorganization of hashtable */
1275     if (string_hash.entries > (string_hash.size * 2)) {
1276                 /* reorganization of hashtable, average length of
1277          the external chains is approx. 2                */
1278
1279                 u4 i;
1280                 literalstring *s;
1281                 hashtable newhash; /* the new hashtable */
1282
1283                 /* create new hashtable, double the size */
1284                 init_hashtable(&newhash, string_hash.size * 2);
1285                 newhash.entries = string_hash.entries;
1286
1287                 /* transfer elements to new hashtable */
1288                 for (i = 0; i < string_hash.size; i++) {
1289                         s = string_hash.ptr[i];
1290                         while (s) {
1291                                 literalstring *nexts = s->hashlink;
1292                                 js   = (java_lang_String *) s->string;
1293                                 slot = unicode_hashkey(js->value->data, js->count) & (newhash.size - 1);
1294
1295                                 s->hashlink = newhash.ptr[slot];
1296                                 newhash.ptr[slot] = s;
1297
1298                                 /* follow link in external hash chain */
1299                                 s = nexts;
1300                         }
1301                 }
1302
1303                 /* dispose old table */
1304                 MFREE(string_hash.ptr, void*, string_hash.size);
1305                 string_hash = newhash;
1306     }
1307
1308     return (java_objectheader *) js;
1309 }
1310
1311
1312 /******************** Function: literalstring_new *****************************
1313
1314     creates a new javastring with the text of the utf-symbol
1315     and inserts it into the string hashtable
1316
1317 *******************************************************************************/
1318
1319 java_objectheader *literalstring_new(utf *u)
1320 {
1321     char *utf_ptr = u->text;         /* pointer to current unicode character in utf string */
1322     u4 utflength  = utf_strlen(u);   /* length of utf-string if uncompressed */
1323     java_chararray *a;               /* u2-array constructed from utf string */
1324     u4 i;
1325
1326     /* allocate memory */
1327     a = lit_mem_alloc(sizeof(java_chararray) + sizeof(u2) * (utflength - 1) + 10);
1328
1329     /* convert utf-string to u2-array */
1330     for (i = 0; i < utflength; i++)
1331                 a->data[i] = utf_nextu2(&utf_ptr);
1332
1333     return literalstring_u2(a, utflength, 0, false);
1334 }
1335
1336
1337 /********************** function: literalstring_free **************************
1338
1339         removes a javastring from memory
1340
1341 ******************************************************************************/
1342
1343 void literalstring_free(java_objectheader* sobj)
1344 {
1345         java_lang_String *s = (java_lang_String *) sobj;
1346         java_chararray *a = s->value;
1347
1348         /* dispose memory of java.lang.String object */
1349         LFREE(s, java_lang_String);
1350
1351         /* dispose memory of java-characterarray */
1352         LFREE(a, sizeof(java_chararray) + sizeof(u2) * (a->header.size - 1)); /* +10 ?? */
1353 }
1354
1355
1356 void copy_vftbl(vftbl_t **dest, vftbl_t *src)
1357 {
1358     *dest = src;
1359 #if 0
1360     /* XXX this kind of copying does not work (in the general
1361      * case). The interface tables would have to be copied, too. I
1362      * don't see why we should make a copy anyway. -Edwin
1363      */
1364         *dest = mem_alloc(sizeof(vftbl) + sizeof(methodptr)*(src->vftbllength-1));
1365         memcpy(*dest, src, sizeof(vftbl) - sizeof(methodptr));
1366         memcpy(&(*dest)->table, &src->table, src->vftbllength * sizeof(methodptr));
1367 #endif
1368 }
1369
1370
1371 /******************************************************************************************
1372
1373         creates method signature (excluding return type) from array of
1374         class-objects representing the parameters of the method
1375
1376 *******************************************************************************************/
1377
1378
1379 utf *create_methodsig(java_objectarray* types, char *retType)
1380 {
1381     char *buffer;       /* buffer for building the desciptor */
1382     char *pos;          /* current position in buffer */
1383     utf *result;        /* the method signature */
1384     u4 buffer_size = 3; /* minimal size=3: room for parenthesis and returntype */
1385     u4 i, j;
1386
1387     if (!types) return NULL;
1388
1389     /* determine required buffer-size */
1390     for (i = 0; i < types->header.size; i++) {
1391                 classinfo *c = (classinfo *) types->data[i];
1392                 buffer_size  = buffer_size + c->name->blength + 2;
1393     }
1394
1395     if (retType) buffer_size += strlen(retType);
1396
1397     /* allocate buffer */
1398     buffer = MNEW(u1, buffer_size);
1399     pos    = buffer;
1400
1401     /* method-desciptor starts with parenthesis */
1402     *pos++ = '(';
1403
1404     for (i = 0; i < types->header.size; i++) {
1405                 char ch;
1406
1407                 /* current argument */
1408             classinfo *c = (classinfo *) types->data[i];
1409
1410             /* current position in utf-text */
1411             char *utf_ptr = c->name->text;
1412
1413             /* determine type of argument */
1414             if ((ch = utf_nextu2(&utf_ptr)) == '[') {
1415                 /* arrayclass */
1416                 for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1417                                 *pos++ = *utf_ptr; /* copy text */
1418                         }
1419
1420             } else {
1421                         /* check for primitive types */
1422                         for (j = 0; j < PRIMITIVETYPE_COUNT; j++) {
1423                                 char *utf_pos   = utf_ptr - 1;
1424                                 char *primitive = primitivetype_table[j].wrapname;
1425
1426                                 /* compare text */
1427                                 while (utf_pos < utf_end(c->name)) {
1428                                         if (*utf_pos++ != *primitive++) goto nomatch;
1429                                 }
1430
1431                                 /* primitive type found */
1432                                 *pos++ = primitivetype_table[j].typesig;
1433                                 goto next_type;
1434
1435                         nomatch:
1436                                 ;
1437                         }
1438
1439                         /* no primitive type and no arrayclass, so must be object */
1440                         *pos++ = 'L';
1441
1442                         /* copy text */
1443                         for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1444                                 *pos++ = *utf_ptr;
1445                         }
1446
1447                         *pos++ = ';';
1448
1449                 next_type:
1450                         ;
1451                 }
1452     }
1453
1454     *pos++ = ')';
1455
1456     if (retType) {
1457                 for (i = 0; i < strlen(retType); i++) {
1458                         *pos++ = retType[i];
1459                 }
1460     }
1461
1462     /* create utf-string */
1463     result = utf_new(buffer, (pos - buffer));
1464     MFREE(buffer, u1, buffer_size);
1465
1466     return result;
1467 }
1468
1469
1470 /******************************************************************************************
1471
1472         retrieve the next argument or returntype from a descriptor
1473         and return the corresponding class
1474
1475 *******************************************************************************************/
1476
1477 classinfo *get_type(char **utf_ptr,char *desc_end, bool skip)
1478 {
1479     classinfo *c = class_from_descriptor(*utf_ptr,desc_end,utf_ptr,
1480                                          (skip) ? CLASSLOAD_SKIP : CLASSLOAD_LOAD);
1481     if (!c)
1482         /* unknown type */
1483         panic("illegal descriptor");
1484
1485     if (skip) return NULL;
1486
1487     use_class_as_object(c);
1488     return c;
1489 }
1490
1491
1492 /* get_parametertypes **********************************************************
1493
1494    use the descriptor of a method to generate a java/lang/Class array
1495    which contains the classes of the parametertypes of the method
1496
1497 *******************************************************************************/
1498
1499 java_objectarray* get_parametertypes(methodinfo *m)
1500 {
1501     utf  *descr    =  m->descriptor;    /* method-descriptor */
1502     char *utf_ptr  =  descr->text;      /* current position in utf-text */
1503     char *desc_end =  utf_end(descr);   /* points behind utf string     */
1504     java_objectarray* result;
1505     int parametercount = 0;
1506     int i;
1507
1508     /* skip '(' */
1509     utf_nextu2(&utf_ptr);
1510
1511     /* determine number of parameters */
1512     while (*utf_ptr != ')') {
1513         get_type(&utf_ptr, desc_end, true);
1514                 parametercount++;
1515     }
1516
1517     /* create class-array */
1518     result = builtin_anewarray(parametercount, class_java_lang_Class);
1519
1520     utf_ptr = descr->text;
1521     utf_nextu2(&utf_ptr);
1522
1523     /* get returntype classes */
1524     for (i = 0; i < parametercount; i++)
1525             result->data[i] =
1526                         (java_objectheader *) get_type(&utf_ptr, desc_end, false);
1527
1528     return result;
1529 }
1530
1531
1532 /* get_exceptiontypes **********************************************************
1533
1534    get the exceptions which can be thrown by a method
1535
1536 *******************************************************************************/
1537
1538 java_objectarray* get_exceptiontypes(methodinfo *m) {
1539     u2 exccount=m->thrownexceptionscount;
1540     u2 i;
1541     java_objectarray *result;
1542     /* create class-array */
1543     result = builtin_anewarray(exccount, class_java_lang_Class);
1544     for (i=0;i<exccount;i++) {
1545         java_objectheader *oh=(java_objectheader*)(m->thrownexceptions[i]);
1546         use_class_as_object(oh);
1547         result->data[i]=oh;
1548     }
1549     return result;
1550 }
1551
1552
1553
1554
1555
1556 /******************************************************************************************
1557
1558         get the returntype class of a method
1559
1560 *******************************************************************************************/
1561
1562 classinfo *get_returntype(methodinfo *m)
1563 {
1564         char *utf_ptr;   /* current position in utf-text */
1565         char *desc_end;  /* points behind utf string     */
1566         utf *desc = m->descriptor; /* method-descriptor  */
1567
1568         utf_ptr  = desc->text;
1569         desc_end = utf_end(desc);
1570
1571         /* ignore parametertypes */
1572         while ((utf_ptr<desc_end) && utf_nextu2(&utf_ptr)!=')')
1573                 /* skip */ ;
1574
1575         return get_type(&utf_ptr,desc_end, false);
1576 }
1577
1578
1579 /*****************************************************************************/
1580 /*****************************************************************************/
1581
1582
1583 /*--------------------------------------------------------*/
1584 void printNativeCall(nativeCall nc) {
1585   int i,j;
1586
1587   printf("\n%s's Native Methods call:\n",nc.classname); fflush(stdout);
1588   for (i=0; i<nc.methCnt; i++) {
1589       printf("\tMethod=%s %s\n",nc.methods[i].methodname, nc.methods[i].descriptor);fflush(stdout);
1590
1591     for (j=0; j<nc.callCnt[i]; j++) {
1592         printf("\t\t<%i,%i>aCalled = %s %s %s\n",i,j,
1593         nc.methods[i].methodCalls[j].classname,
1594         nc.methods[i].methodCalls[j].methodname,
1595         nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1596       }
1597     }
1598   printf("-+++++--------------------\n");fflush(stdout);
1599 }
1600
1601 /*--------------------------------------------------------*/
1602 void printCompNativeCall(nativeCompCall nc) {
1603   int i,j;
1604   printf("printCompNativeCall BEGIN\n");fflush(stdout);
1605   printf("\n%s's Native Comp Methods call:\n",nc.classname->text);fflush(stdout);
1606   utf_display(nc.classname); fflush(stdout);
1607
1608   for (i=0; i<nc.methCnt; i++) {
1609     printf("\tMethod=%s %s\n",nc.methods[i].methodname->text,nc.methods[i].descriptor->text);fflush(stdout);
1610     utf_display(nc.methods[i].methodname); fflush(stdout);
1611     utf_display(nc.methods[i].descriptor);fflush(stdout);
1612     printf("\n");fflush(stdout);
1613
1614     for (j=0; j<nc.callCnt[i]; j++) {
1615       printf("\t\t<%i,%i>bCalled = ",i,j);fflush(stdout);
1616         utf_display(nc.methods[i].methodCalls[j].classname);fflush(stdout);
1617         utf_display(nc.methods[i].methodCalls[j].methodname); fflush(stdout);
1618         utf_display(nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1619         printf("\n");fflush(stdout);
1620       }
1621     }
1622 printf("---------------------\n");fflush(stdout);
1623 }
1624
1625
1626 /*--------------------------------------------------------*/
1627 classMeth findNativeMethodCalls(utf *c, utf *m, utf *d )
1628 {
1629     int i = 0;
1630     int j = 0;
1631     int cnt = 0;
1632     classMeth mc;
1633     mc.i_class = i;
1634     mc.j_method = j;
1635     mc.methCnt = cnt;
1636
1637     return mc;
1638 }
1639
1640 /*--------------------------------------------------------*/
1641 nativeCall* findNativeClassCalls(char *aclassname ) {
1642 int i;
1643
1644 for (i=0;i<NATIVECALLSSIZE; i++) {
1645    /* convert table to utf later to speed up search */
1646    if (strcmp(nativeCalls[i].classname, aclassname) == 0)
1647         return &nativeCalls[i];
1648    }
1649
1650 return NULL;
1651 }
1652 /*--------------------------------------------------------*/
1653 /*--------------------------------------------------------*/
1654 void utfNativeCall(nativeCall nc, nativeCompCall *ncc) {
1655   int i,j;
1656
1657
1658   ncc->classname = utf_new_char(nc.classname);
1659   ncc->methCnt = nc.methCnt;
1660
1661   for (i=0; i<nc.methCnt; i++) {
1662     ncc->methods[i].methodname = utf_new_char(nc.methods[i].methodname);
1663     ncc->methods[i].descriptor = utf_new_char(nc.methods[i].descriptor);
1664     ncc->callCnt[i] = nc.callCnt[i];
1665
1666     for (j=0; j<nc.callCnt[i]; j++) {
1667
1668         ncc->methods[i].methodCalls[j].classname  = utf_new_char(nc.methods[i].methodCalls[j].classname);
1669
1670         if (strcmp("", nc.methods[i].methodCalls[j].methodname) != 0) {
1671           ncc->methods[i].methodCalls[j].methodname = utf_new_char(nc.methods[i].methodCalls[j].methodname);
1672           ncc->methods[i].methodCalls[j].descriptor = utf_new_char(nc.methods[i].methodCalls[j].descriptor);
1673           }
1674         else {
1675           ncc->methods[i].methodCalls[j].methodname = NULL;
1676           ncc->methods[i].methodCalls[j].descriptor = NULL;
1677           }
1678       }
1679     }
1680 }
1681
1682
1683
1684 /*--------------------------------------------------------*/
1685
1686 bool natcall2utf(bool natcallcompdone) {
1687 int i;
1688
1689 if (natcallcompdone)
1690         return true;
1691
1692 for (i=0;i<NATIVECALLSSIZE; i++) {
1693    utfNativeCall  (nativeCalls[i], &nativeCompCalls[i]);
1694    }
1695
1696 return true;
1697 }
1698
1699 /*--------------------------------------------------------*/
1700
1701
1702 java_objectarray *builtin_asm_createclasscontextarray(classinfo **end,classinfo **start)
1703 {
1704 #if defined(__GNUC__)
1705 #warning platform dependend
1706 #endif
1707         java_objectarray *tmpArray;
1708         int i;
1709         classinfo **current;
1710         classinfo *c;
1711         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1712         /*printf("end %p, start %p, size %ld\n",end,start,size);*/
1713         if (!class_java_lang_Class)
1714                 class_java_lang_Class = class_new(utf_new_char ("java/lang/Class"));
1715         if (!class_java_lang_SecurityManager)
1716                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1717         if (size>0) {
1718                 if (start==class_java_lang_SecurityManager) {
1719                         size--;
1720                         start--;
1721                 }
1722         }
1723         tmpArray=builtin_newarray(size, class_array_of(class_java_lang_Class)->vftbl);
1724
1725         for(i=0,current=start;i<size;i++,current--) {
1726                 c=*current;
1727 /*              printf("%d\n",i);
1728                 utf_display(c->name);*/
1729                 use_class_as_object(c);
1730                 tmpArray->data[i]=c;
1731         }
1732         return tmpArray;
1733
1734 }
1735
1736 java_lang_ClassLoader *builtin_asm_getclassloader(classinfo **end,classinfo **start)
1737 {
1738 #if defined(__GNUC__)
1739 #warning platform dependend
1740 #endif
1741         int i;
1742         classinfo **current;
1743         classinfo *c;
1744         classinfo *privilegedAction;
1745         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1746 /*      log_text("builtin_asm_getclassloader");
1747         printf("end %p, start %p, size %ld\n",end,start,size);*/
1748
1749         if (!class_java_lang_SecurityManager)
1750                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1751         if (size>0) {
1752                 if (start==class_java_lang_SecurityManager) {
1753                         size--;
1754                         start--;
1755                 }
1756         }
1757
1758         privilegedAction=class_new(utf_new_char("java/security/PrivilegedAction"));
1759
1760         for(i=0,current=start;i<size;i++,current--) {
1761                 c=*current;
1762                 if (c==privilegedAction) return NULL;
1763                 if (c->classloader) return c->classloader;
1764         }
1765         return NULL;
1766
1767
1768
1769
1770 /*
1771         log_text("Java_java_lang_VMSecurityManager_currentClassLoader");
1772         init_systemclassloader();
1773
1774         return SystemClassLoader;*/
1775 }
1776
1777 /*
1778  * These are local overrides for various environment variables in Emacs.
1779  * Please do not remove this and leave it at the end of the file, where
1780  * Emacs will automagically detect them.
1781  * ---------------------------------------------------------------------
1782  * Local variables:
1783  * mode: c
1784  * indent-tabs-mode: t
1785  * c-basic-offset: 4
1786  * tab-width: 4
1787  * End:
1788  */