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 1089 2004-05-27 15:41:37Z twisti $
  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 "main.h"
  51 #include "jni.h"
  52 #include "native.h"
  53 #include "nativetypes.hh"
  54 #include "builtin.h"
  55 #include "asmpart.h"
  56 #include "tables.h"
  57 #include "loader.h"
  58 #include "jni.h"
  59 #include "jit/jit.h"
  60 #include "toolbox/logging.h"
  61 #include "toolbox/memory.h"
  62 #include "threads/thread.h"
  63 #include "threads/threadio.h"
  64 #include "threads/locks.h"
  65 #include "nat/java_lang_VMClass.h"
  66 #include "nat/java_lang_Throwable.h"
  67
  68 /* Include files for IO functions */
  69
  70 #include <fcntl.h>
  71 #include <dirent.h>
  72 #include <sys/types.h>
  73 #ifdef _OSF_SOURCE
  74 #include <sys/mode.h>
  75 #endif
  76 #include <sys/stat.h>
  77
  78 #include "threads/threadio.h"
  79
  80 /* searchpath for classfiles */
  81 char *classpath;
  82
  83 /* for java-string to char conversion */
  84 #define MAXSTRINGSIZE 1000
  85
  86
  87 /******************** systemclasses required for native methods ***************/
  88
  89 classinfo *class_java_lang_Class;
  90 classinfo *class_java_lang_VMClass;
  91 classinfo *class_java_lang_System;
  92 classinfo *class_java_lang_ClassLoader;
  93 classinfo *class_gnu_java_lang_SystemClassLoader;
  94 classinfo *class_java_lang_SecurityManager;
  95 classinfo *class_java_lang_Double;
  96 classinfo *class_java_lang_Float;
  97 classinfo *class_java_lang_Long;
  98 classinfo *class_java_lang_Byte;
  99 classinfo *class_java_lang_Short;
 100 classinfo *class_java_lang_Boolean;
 101 classinfo *class_java_lang_Void;
 102 classinfo *class_java_lang_Character;
 103 classinfo *class_java_lang_Integer;
 104
 105 methodinfo *method_vmclass_init;
 106
 107
 108 /* system exception classes required while compiling */
 109
 110 classinfo *class_java_lang_Throwable;
 111
 112
 113 /* exception/error super class */
 114
 115 char *string_java_lang_Throwable =
 116     "java/lang/Throwable";
 117
 118 char *string_java_lang_VMThrowable =
 119     "java/lang/VMThrowable";
 120
 121
 122 /* specify some exception strings for code generation */
 123
 124 char *string_java_lang_ArithmeticException =
 125     "java/lang/ArithmeticException";
 126
 127 char *string_java_lang_ArithmeticException_message =
 128     "/ by zero";
 129
 130 char *string_java_lang_ArrayIndexOutOfBoundsException =
 131     "java/lang/ArrayIndexOutOfBoundsException";
 132
 133 char *string_java_lang_ArrayStoreException =
 134     "java/lang/ArrayStoreException";
 135
 136 char *string_java_lang_ClassCastException =
 137     "java/lang/ClassCastException";
 138
 139 char *string_java_lang_ClassNotFoundException =
 140         "java/lang/ClassNotFoundException";
 141
 142 char *string_java_lang_CloneNotSupportedException =
 143     "java/lang/CloneNotSupportedException";
 144
 145 char *string_java_lang_Exception =
 146     "java/lang/Exception";
 147
 148 char *string_java_lang_IllegalArgumentException =
 149     "java/lang/IllegalArgumentException";
 150
 151 char *string_java_lang_IllegalMonitorStateException =
 152     "java/lang/IllegalMonitorStateException";
 153
 154 char *string_java_lang_NegativeArraySizeException =
 155     "java/lang/NegativeArraySizeException";
 156
 157 char *string_java_lang_NoSuchFieldException =
 158         "java/lang/NoSuchFieldException";
 159
 160 char *string_java_lang_NoSuchMethodException =
 161         "java/lang/NoSuchMethodException";
 162
 163 char *string_java_lang_NullPointerException =
 164     "java/lang/NullPointerException";
 165
 166
 167 /* specify some error strings for code generation */
 168
 169 char *string_java_lang_AbstractMethodError =
 170     "java/lang/AbstractMethodError";
 171
 172 char *string_java_lang_ClassCircularityError =
 173     "java/lang/ClassCircularityError";
 174
 175 char *string_java_lang_ClassFormatError =
 176     "java/lang/ClassFormatError";
 177
 178 char *string_java_lang_Error =
 179     "java/lang/Error";
 180
 181 char *string_java_lang_ExceptionInInitializerError =
 182     "java/lang/ExceptionInInitializerError";
 183
 184 char *string_java_lang_IncompatibleClassChangeError =
 185     "java/lang/IncompatibleClassChangeError";
 186
 187 char *string_java_lang_InternalError =
 188     "java/lang/InternalError";
 189
 190 char *string_java_lang_LinkageError =
 191     "java/lang/LinkageError";
 192
 193 char *string_java_lang_NoClassDefFoundError =
 194     "java/lang/NoClassDefFoundError";
 195
 196 char *string_java_lang_NoSuchFieldError =
 197         "java/lang/NoSuchFieldError";
 198
 199 char *string_java_lang_NoSuchMethodError =
 200         "java/lang/NoSuchMethodError";
 201
 202 char *string_java_lang_OutOfMemoryError =
 203     "java/lang/OutOfMemoryError";
 204
 205 char *string_java_lang_VerifyError =
 206     "java/lang/VerifyError";
 207
 208 char *string_java_lang_VirtualMachineError =
 209     "java/lang/VirtualMachineError";
 210
 211
 212 /* the system classloader object */
 213 struct java_lang_ClassLoader *SystemClassLoader = NULL;
 214
 215 /* for raising exceptions from native methods */
 216 #if !defined(USE_THREADS) || !defined(NATIVE_THREADS)
 217 java_objectheader* _exceptionptr = NULL;
 218 #endif
 219
 220 /************* use classinfo structure as java.lang.Class object **************/
 221
 222 void use_class_as_object(classinfo *c)
 223 {
 224 /*      vftbl *vt; */
 225 /*      vftbl *newtbl; */
 226         java_objectheader *vmo;
 227
 228 /*      vt = class_java_lang_Class->vftbl; */
 229
 230         if (!c->classvftbl) {
 231                 c->classvftbl = true;
 232
 233                 /*                copy_vftbl(&newtbl, vt);
 234                                                   newtbl->class = c->header.vftbl->class;
 235                                                   newtbl->baseval = c->header.vftbl->baseval;
 236                                                   newtbl->diffval = c->header.vftbl->diffval;
 237                                                   c->header.vftbl = newtbl;*/
 238
 239                 c->header.vftbl = class_java_lang_Class->vftbl;
 240
 241                 method_vmclass_init =
 242                         class_findmethod(class_java_lang_VMClass,
 243                                                          utf_new_char("<init>"),
 244                                                          utf_new_char("(Lgnu/classpath/RawData;)V"));
 245
 246                 if (method_vmclass_init == 0) {
 247                         class_showmethods(class_java_lang_VMClass);
 248                         panic("Needed class initializer for VMClass could not be found");
 249                 }
 250
 251                 vmo = builtin_new(class_java_lang_VMClass);
 252
 253                 if (!vmo)
 254                         panic("Error while creating instance of java/lang/VMClass");
 255
 256                 asm_calljavafunction(method_vmclass_init, vmo, c, NULL, NULL);
 257
 258                 c->vmClass = (java_lang_VMClass *) vmo;
 259 #if 0
 260                 setfield_critical(class_java_lang_Class,vmo,"vmClass",          "Ljava/lang/VMClass;",  jobject, (jobject) class_java_lang_Class /*this*/);
 261 #endif
 262
 263         }
 264
 265 }
 266
 267
 268 /*************************** include native methods ***************************/
 269
 270 #ifdef USE_GTK
 271 #include "nat/GdkGraphics.c"
 272 #include "nat/GtkComponentPeer.c"
 273 #include "nat/GdkPixbufDecoder.c"
 274 #include "nat/GtkScrollPanePeer.c"
 275 #include "nat/GtkFileDialogPeer.c"
 276 #include "nat/GtkLabelPeer.c"
 277 #endif
 278
 279
 280 /************************** tables for methods ********************************/
 281
 282 #undef JOWENN_DEBUG
 283 #undef JOWENN_DEBUG1
 284
 285 /* table for locating native methods */
 286 static struct nativeref {
 287         char *classname;
 288         char *methodname;
 289         char *descriptor;
 290         bool isstatic;
 291         functionptr func;
 292 } nativetable [] = {
 293
 294 #include "nativetable.hh"
 295
 296 };
 297
 298
 299 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
 300
 301 /* table for fast string comparison */
 302 static struct nativecompref {
 303         utf *classname;
 304         utf *methodname;
 305         utf *descriptor;
 306         bool isstatic;
 307         functionptr func;
 308 } nativecomptable [NATIVETABLESIZE];
 309
 310 /* string comparsion table initialized */
 311 static bool nativecompdone = false;
 312
 313
 314 /******************************************************************************/
 315 /******************************************************************************/
 316 #include "natcalls.h"
 317
 318 /* string call comparison table initialized */
 319
 320 /******************************************************************************/
 321 /******************************************************************************/
 322
 323 /* init_system_exceptions *****************************************************
 324
 325    load, link and compile exceptions used in the system
 326
 327 *******************************************************************************/
 328
 329 void init_system_exceptions()
 330 {
 331         classinfo *c;
 332
 333         /* java/lang/Throwable */
 334
 335         class_java_lang_Throwable =
 336                 class_new(utf_new_char(string_java_lang_Throwable));
 337         class_load(class_java_lang_Throwable);
 338         class_link(class_java_lang_Throwable);
 339         compile_all_class_methods(class_java_lang_Throwable);
 340
 341         /* java/lang/VMThrowable */
 342
 343         c = class_new(utf_new_char(string_java_lang_VMThrowable));
 344         class_load(c);
 345         class_link(c);
 346         compile_all_class_methods(c);
 347
 348         /* java/lang/ClassFormatError */
 349
 350         c = class_new(utf_new_char(string_java_lang_ClassFormatError));
 351         class_load(c);
 352         class_link(c);
 353         compile_all_class_methods(c);
 354
 355         /* java/lang/Error */
 356
 357         c = class_new(utf_new_char(string_java_lang_Error));
 358         class_load(c);
 359         class_link(c);
 360         compile_all_class_methods(c);
 361
 362         /* java/lang/Exception */
 363
 364         c = class_new(utf_new_char(string_java_lang_Exception));
 365         class_load(c);
 366         class_link(c);
 367         compile_all_class_methods(c);
 368
 369         /* java/lang/IncompatibleClassChangeError */
 370
 371         c = class_new(utf_new_char(string_java_lang_IncompatibleClassChangeError));
 372         class_load(c);
 373         class_link(c);
 374         compile_all_class_methods(c);
 375
 376         /* java/lang/LinkageError */
 377
 378         c = class_new(utf_new_char(string_java_lang_LinkageError));
 379         class_load(c);
 380         class_link(c);
 381         compile_all_class_methods(c);
 382
 383         /* java/lang/NoClassDefFoundError */
 384
 385         c = class_new(utf_new_char(string_java_lang_NoClassDefFoundError));
 386         class_load(c);
 387         class_link(c);
 388         compile_all_class_methods(c);
 389
 390         /* java/lang/NoSuchFieldError */
 391
 392         c = class_new(utf_new_char(string_java_lang_NoSuchFieldError));
 393         class_load(c);
 394         class_link(c);
 395         compile_all_class_methods(c);
 396
 397         /* java/lang/NoSuchMethodError */
 398
 399         c = class_new(utf_new_char(string_java_lang_NoSuchMethodError));
 400         class_load(c);
 401         class_link(c);
 402         compile_all_class_methods(c);
 403
 404         /* java/lang/OutOfMemoryError */
 405
 406         c = class_new(utf_new_char(string_java_lang_OutOfMemoryError));
 407         class_load(c);
 408         class_link(c);
 409         compile_all_class_methods(c);
 410
 411         /* java/lang/VerifyError */
 412
 413         c = class_new(utf_new_char(string_java_lang_VerifyError));
 414         class_load(c);
 415         class_link(c);
 416         compile_all_class_methods(c);
 417
 418         /* java/lang/VirtualMachineError */
 419
 420         c = class_new(utf_new_char(string_java_lang_VirtualMachineError));
 421         class_load(c);
 422         class_link(c);
 423         compile_all_class_methods(c);
 424 }
 425
 426
 427 void compile_all_class_methods(classinfo *c)
 428 {
 429         s4 i;
 430
 431         for (i = 0; i < c->methodscount; i++) {
 432                 (void) jit_compile(&(c->methods[i]));
 433         }
 434 }
 435
 436
 437 void throw_exception_exit()
 438 {
 439         java_objectheader *xptr;
 440         classinfo *c;
 441         methodinfo *pss;
 442
 443         if (*exceptionptr) {
 444                 xptr = *exceptionptr;
 445
 446                 /* clear exception, because we are calling jit code again */
 447                 *exceptionptr = NULL;
 448
 449                 fprintf(stderr, "Exception in thread \"main\" ");
 450                 fflush(stderr);
 451
 452                 c = xptr->vftbl->class;
 453
 454 /*              ts = class_resolveclassmethod(c, */
 455 /*                                                                        utf_new_char("toString"), */
 456 /*                                                                        utf_new_char("()Ljava/lang/String;"), */
 457 /*                                                                        class_java_lang_Object, */
 458 /*                                                                        false); */
 459
 460 /*              if (!ts) { */
 461 /*                      panic("internal error"); */
 462 /*              } */
 463
 464 /*              tostring = asm_calljavafunction(ts, xptr, NULL, NULL, NULL); */
 465
 466 /*              utf_display(javastring_toutf(tostring, false)); */
 467
 468                 pss = class_resolveclassmethod(c,
 469                                                                            utf_new_char("printStackTrace"),
 470                                                                            utf_new_char("()V"),
 471                                                                            class_java_lang_Object,
 472                                                                            false);
 473
 474                 /* print the stacktrace */
 475                 if (pss) {
 476                         asm_calljavafunction(pss, xptr, NULL, NULL, NULL);
 477
 478                         /* this normally means, we are EXTREMLY out of memory, but may be
 479                            any other exception */
 480                         if (*exceptionptr) {
 481                                 utf_fprint_classname(stderr, c->name);
 482                                 fprintf(stderr, "\n");
 483                         }
 484
 485                 } else {
 486                         utf_fprint_classname(stderr, c->name);
 487                         fprintf(stderr, ": printStackTrace()V not found!\n");
 488                 }
 489
 490                 fflush(stderr);
 491
 492                 /* good bye! */
 493                 exit(1);
 494         }
 495 }
 496
 497
 498 void throw_cacao_exception_exit(char *exception, char *message)
 499 {
 500         s4 i;
 501         char *tmp;
 502         s4 len;
 503
 504         len = strlen(exception);
 505         tmp = MNEW(char*, len);
 506         strncpy(tmp, exception, len);
 507
 508         /* convert to classname */
 509
 510         for (i = len - 1; i >= 0; i--) {
 511                 if (tmp[i] == '/') tmp[i] = '.';
 512         }
 513
 514         fprintf(stderr, "Exception in thread \"main\" %s", tmp);
 515
 516         MFREE(tmp, char*, len);
 517
 518         if (strlen(message) > 0)
 519                 fprintf(stderr, ": %s", message);
 520
 521         fprintf(stderr, "\n");
 522         fflush(stderr);
 523
 524         /* good bye! */
 525         exit(1);
 526 }
 527
 528
 529 java_objectheader *new_exception(char *classname)
 530 {
 531         classinfo *c = class_new(utf_new_char(classname));
 532
 533         return native_new_and_init(c);
 534 }
 535
 536 java_objectheader *new_exception_message(char *classname, char *message)
 537 {
 538         classinfo *c = class_new(utf_new_char(classname));
 539
 540         return native_new_and_init_string(c, javastring_new_char(message));
 541 }
 542
 543
 544 java_objectheader *new_exception_throwable(char *classname, java_lang_Throwable *throwable)
 545 {
 546         classinfo *c = class_new(utf_new_char(classname));
 547
 548         return native_new_and_init_throwable(c, throwable);
 549 }
 550
 551
 552 java_objectheader *new_exception_utfmessage(char *classname, utf *message)
 553 {
 554         classinfo *c = class_new(utf_new_char(classname));
 555
 556         return native_new_and_init_string(c, javastring_new(message));
 557 }
 558
 559
 560 java_objectheader *new_exception_javastring(char *classname, java_lang_String *message)
 561 {
 562         classinfo *c = class_new(utf_new_char(classname));
 563
 564         return native_new_and_init_string(c, message);
 565 }
 566
 567
 568 java_objectheader *new_exception_int(char *classname, s4 i)
 569 {
 570         classinfo *c = class_new(utf_new_char(classname));
 571
 572         return native_new_and_init_int(c, i);
 573 }
 574
 575
 576 /*********************** function: native_loadclasses **************************
 577
 578         load classes required for native methods
 579
 580 *******************************************************************************/
 581
 582 void native_loadclasses()
 583 {
 584         static int classesLoaded = 0; /*temporary hack JoWenn*/
 585
 586         if (classesLoaded)
 587                 return;
 588
 589         classesLoaded = 1;
 590
 591         class_java_lang_Cloneable =
 592                 class_new(utf_new_char("java/lang/Cloneable"));
 593         class_load(class_java_lang_Cloneable);
 594         class_link(class_java_lang_Cloneable);
 595
 596         class_java_lang_Class =
 597                 class_new(utf_new_char("java/lang/Class"));
 598         class_load(class_java_lang_Class);
 599         class_link(class_java_lang_Class);
 600
 601         class_java_lang_VMClass =
 602                 class_new(utf_new_char("java/lang/VMClass"));
 603         class_load(class_java_lang_VMClass);
 604         class_link(class_java_lang_VMClass);
 605
 606         class_java_lang_ClassLoader =
 607                 class_new(utf_new_char("java/lang/ClassLoader"));
 608         class_load(class_java_lang_ClassLoader);
 609         class_link(class_java_lang_ClassLoader);
 610
 611         /* load classes for wrapping primitive types */
 612         class_java_lang_Double = class_new(utf_new_char("java/lang/Double"));
 613         class_load(class_java_lang_Double);
 614         class_link(class_java_lang_Double);
 615
 616         class_java_lang_Float = class_new(utf_new_char("java/lang/Float"));
 617         class_load(class_java_lang_Float);
 618         class_link(class_java_lang_Float);
 619
 620         class_java_lang_Character =     class_new(utf_new_char("java/lang/Character"));
 621         class_load(class_java_lang_Character);
 622         class_link(class_java_lang_Character);
 623
 624         class_java_lang_Integer = class_new(utf_new_char("java/lang/Integer"));
 625         class_load(class_java_lang_Integer);
 626         class_link(class_java_lang_Integer);
 627
 628         class_java_lang_Long = class_new(utf_new_char("java/lang/Long"));
 629         class_load(class_java_lang_Long);
 630         class_link(class_java_lang_Long);
 631
 632         class_java_lang_Byte = class_new(utf_new_char("java/lang/Byte"));
 633         class_load(class_java_lang_Byte);
 634         class_link(class_java_lang_Byte);
 635
 636         class_java_lang_Short = class_new(utf_new_char("java/lang/Short"));
 637         class_load(class_java_lang_Short);
 638         class_link(class_java_lang_Short);
 639
 640         class_java_lang_Boolean = class_new(utf_new_char("java/lang/Boolean"));
 641         class_load(class_java_lang_Boolean);
 642         class_link(class_java_lang_Boolean);
 643
 644         class_java_lang_Void = class_new(utf_new_char("java/lang/Void"));
 645         class_load(class_java_lang_Void);
 646         class_link(class_java_lang_Void);
 647 }
 648
 649
 650 /*****************************************************************************
 651
 652         create systemclassloader object and initialize instance fields
 653
 654 ******************************************************************************/
 655
 656 void init_systemclassloader()
 657 {
 658         log_text("init_systemclassloader");
 659         if (!SystemClassLoader) {
 660                 native_loadclasses();
 661                 log_text("Initializing new system class loader");
 662                 /* create object and call initializer */
 663                 SystemClassLoader = (java_lang_ClassLoader *) native_new_and_init(class_new(utf_new_char("gnu/java/lang/SystemClassLoader")));
 664
 665                 /* systemclassloader has no parent */
 666                 SystemClassLoader->parent      = NULL;
 667                 SystemClassLoader->initialized = true;
 668         }
 669         log_text("leaving system class loader");
 670 }
 671
 672
 673 /********************* function: native_setclasspath **************************/
 674
 675 void native_setclasspath(char *path)
 676 {
 677         /* set searchpath for classfiles */
 678         classpath = path;
 679 }
 680
 681
 682 /*********************** Function: native_findfunction *************************
 683
 684         Looks up a method (must have the same class name, method name, descriptor
 685         and 'static'ness) and returns a function pointer to it.
 686         Returns: function pointer or NULL (if there is no such method)
 687
 688         Remark: For faster operation, the names/descriptors are converted from C
 689                 strings to Unicode the first time this function is called.
 690
 691 *******************************************************************************/
 692
 693 functionptr native_findfunction(utf *cname, utf *mname,
 694                                                                 utf *desc, bool isstatic)
 695 {
 696         int i;
 697         /* entry of table for fast string comparison */
 698         struct nativecompref *n;
 699         /* for warning message if no function is found */
 700         char *buffer;
 701         int buffer_len;
 702
 703         isstatic = isstatic ? true : false;
 704
 705         if (!nativecompdone) {
 706                 for (i = 0; i < NATIVETABLESIZE; i++) {
 707                         nativecomptable[i].classname  =
 708                                 utf_new_char(nativetable[i].classname);
 709                         nativecomptable[i].methodname =
 710                                 utf_new_char(nativetable[i].methodname);
 711                         nativecomptable[i].descriptor =
 712                                 utf_new_char(nativetable[i].descriptor);
 713                         nativecomptable[i].isstatic   =
 714                                 nativetable[i].isstatic;
 715                         nativecomptable[i].func       =
 716                                 nativetable[i].func;
 717                 }
 718                 nativecompdone = true;
 719         }
 720
 721 #ifdef JOWENN_DEBUG
 722         buffer_len =
 723                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 724
 725         buffer = MNEW(char, buffer_len);
 726
 727         strcpy(buffer, "searching matching function in native table:");
 728         utf_sprint(buffer+strlen(buffer), mname);
 729         strcpy(buffer+strlen(buffer), ": ");
 730         utf_sprint(buffer+strlen(buffer), desc);
 731         strcpy(buffer+strlen(buffer), " for class ");
 732         utf_sprint(buffer+strlen(buffer), cname);
 733
 734         log_text(buffer);
 735
 736         MFREE(buffer, char, buffer_len);
 737 #endif
 738
 739         for (i = 0; i < NATIVETABLESIZE; i++) {
 740                 n = &(nativecomptable[i]);
 741
 742                 if (cname == n->classname && mname == n->methodname &&
 743                     desc == n->descriptor && isstatic == n->isstatic)
 744                         return n->func;
 745 #ifdef JOWENN_DEBUG
 746                         else {
 747                                 if (cname == n->classname && mname == n->methodname )  log_text("static and descriptor mismatch");
 748
 749                                 else {
 750                                         buffer_len =
 751                                           utf_strlen(n->classname) + utf_strlen(n->methodname) + utf_strlen(n->descriptor) + 64;
 752
 753                                         buffer = MNEW(char, buffer_len);
 754
 755                                         strcpy(buffer, "comparing with:");
 756                                         utf_sprint(buffer+strlen(buffer), n->methodname);
 757                                         strcpy (buffer+strlen(buffer), ": ");
 758                                         utf_sprint(buffer+strlen(buffer), n->descriptor);
 759                                         strcpy(buffer+strlen(buffer), " for class ");
 760                                         utf_sprint(buffer+strlen(buffer), n->classname);
 761
 762                                         log_text(buffer);
 763
 764                                         MFREE(buffer, char, buffer_len);
 765                                 }
 766                         }
 767 #endif
 768         }
 769
 770
 771         /* no function was found, display warning */
 772
 773         buffer_len =
 774                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 775
 776         buffer = MNEW(char, buffer_len);
 777
 778         strcpy(buffer, "warning: native function ");
 779         utf_sprint(buffer + strlen(buffer), mname);
 780         strcpy(buffer + strlen(buffer), ": ");
 781         utf_sprint(buffer + strlen(buffer), desc);
 782         strcpy(buffer + strlen(buffer), " not found in class ");
 783         utf_sprint(buffer + strlen(buffer), cname);
 784
 785         log_text(buffer);
 786
 787         MFREE(buffer, char, buffer_len);
 788
 789 /*      exit(1); */
 790
 791         /* keep compiler happy */
 792         return NULL;
 793 }
 794
 795
 796 /********************** function: javastring_new *******************************
 797
 798         creates a new object of type java/lang/String with the text of
 799         the specified utf8-string
 800
 801         return: pointer to the string or NULL if memory is exhausted.
 802
 803 *******************************************************************************/
 804
 805 java_lang_String *javastring_new(utf *u)
 806 {
 807         char *utf_ptr = u->text;        /* current utf character in utf string    */
 808         int utflength = utf_strlen(u);  /* length of utf-string if uncompressed   */
 809         java_lang_String *s;                /* result-string                          */
 810         java_chararray *a;
 811         s4 i;
 812
 813         s = (java_lang_String *) builtin_new(class_java_lang_String);
 814         a = builtin_newarray_char(utflength);
 815
 816         /* javastring or character-array could not be created */
 817         if (!a || !s)
 818                 return NULL;
 819
 820         /* decompress utf-string */
 821         for (i = 0; i < utflength; i++)
 822                 a->data[i] = utf_nextu2(&utf_ptr);
 823
 824         /* set fields of the javastring-object */
 825         s->value  = a;
 826         s->offset = 0;
 827         s->count  = utflength;
 828
 829         return s;
 830 }
 831
 832
 833 /********************** function: javastring_new_char **************************
 834
 835         creates a new java/lang/String object which contains the convertet
 836         C-string passed via text.
 837
 838         return: the object pointer or NULL if memory is exhausted.
 839
 840 *******************************************************************************/
 841
 842 java_lang_String *javastring_new_char(char *text)
 843 {
 844         s4 i;
 845         s4 len = strlen(text); /* length of the string */
 846         java_lang_String *s;   /* result-string */
 847         java_chararray *a;
 848
 849         s = (java_lang_String *) builtin_new(class_java_lang_String);
 850         a = builtin_newarray_char(len);
 851
 852         /* javastring or character-array could not be created */
 853         if (!a || !s)
 854                 return NULL;
 855
 856         /* copy text */
 857         for (i = 0; i < len; i++)
 858                 a->data[i] = text[i];
 859
 860         /* set fields of the javastring-object */
 861         s->value  = a;
 862         s->offset = 0;
 863         s->count  = len;
 864
 865         return s;
 866 }
 867
 868
 869 /************************* function javastring_tochar **************************
 870
 871         converts a Java string into a C string.
 872
 873         return: pointer to C string
 874
 875         Caution: every call of this function overwrites the previous string !!!
 876
 877 *******************************************************************************/
 878
 879 static char stringbuffer[MAXSTRINGSIZE];
 880
 881 char *javastring_tochar(java_objectheader *so)
 882 {
 883         java_lang_String *s = (java_lang_String *) so;
 884         java_chararray *a;
 885         s4 i;
 886
 887         if (!s)
 888                 return "";
 889
 890         a = s->value;
 891
 892         if (!a)
 893                 return "";
 894
 895         if (s->count > MAXSTRINGSIZE)
 896                 return "";
 897
 898         for (i = 0; i < s->count; i++)
 899                 stringbuffer[i] = a->data[s->offset + i];
 900
 901         stringbuffer[i] = '\0';
 902
 903         return stringbuffer;
 904 }
 905
 906
 907 /****************** function class_findfield_approx ****************************
 908
 909         searches in 'classinfo'-structure for a field with the
 910         specified name
 911
 912 *******************************************************************************/
 913
 914 fieldinfo *class_findfield_approx(classinfo *c, utf *name)
 915 {
 916         s4 i;
 917
 918         for (i = 0; i < c->fieldscount; i++) {
 919                 /* compare field names */
 920                 if ((c->fields[i].name == name))
 921                         return &(c->fields[i]);
 922         }
 923
 924         /* field was not found, raise exception */
 925         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 926
 927         return NULL;
 928 }
 929
 930
 931 s4 class_findfield_index_approx(classinfo *c, utf *name)
 932 {
 933         s4 i;
 934
 935         for (i = 0; i < c->fieldscount; i++) {
 936                 /* compare field names */
 937                 if ((c->fields[i].name == name))
 938                         return i;
 939         }
 940
 941         /* field was not found, raise exception */
 942         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 943
 944         return -1;
 945 }
 946
 947
 948 /********************** function: native_new_and_init *************************
 949
 950         Creates a new object on the heap and calls the initializer.
 951         Returns the object pointer or NULL if memory is exhausted.
 952
 953 *******************************************************************************/
 954
 955 java_objectheader *native_new_and_init(classinfo *c)
 956 {
 957         methodinfo *m;
 958         java_objectheader *o;
 959
 960         if (!c)
 961                 return *exceptionptr;
 962
 963         o = builtin_new(c);                 /* create object                      */
 964
 965         if (!o)
 966                 return NULL;
 967
 968         /* find initializer */
 969
 970         m = class_findmethod(c,
 971                                                  utf_new_char("<init>"),
 972                                                  utf_new_char("()V"));
 973
 974         if (!m) {                           /* initializer not found              */
 975                 if (verbose) {
 976                         char logtext[MAXLOGTEXT];
 977                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 978                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 979                         log_text(logtext);
 980                 }
 981                 return o;
 982         }
 983
 984         /* call initializer */
 985
 986         asm_calljavafunction(m, o, NULL, NULL, NULL);
 987
 988         return o;
 989 }
 990
 991
 992 java_objectheader *native_new_and_init_string(classinfo *c, java_lang_String *s)
 993 {
 994         methodinfo *m;
 995         java_objectheader *o;
 996
 997         if (!c)
 998                 return *exceptionptr;
 999
1000         o = builtin_new(c);          /* create object          */
1001
1002         if (!o)
1003                 return NULL;
1004
1005         /* find initializer */
1006
1007         m = class_findmethod(c,
1008                                                  utf_new_char("<init>"),
1009                                                  utf_new_char("(Ljava/lang/String;)V"));
1010
1011         if (!m) {                                       /* initializer not found  */
1012                 if (verbose) {
1013                         char logtext[MAXLOGTEXT];
1014                         sprintf(logtext, "Warning: class has no instance-initializer: ");
1015                         utf_sprint_classname(logtext + strlen(logtext), c->name);
1016                         log_text(logtext);
1017                 }
1018                 return o;
1019         }
1020
1021         /* call initializer */
1022
1023         asm_calljavafunction(m, o, s, NULL, NULL);
1024
1025         return o;
1026 }
1027
1028
1029 java_objectheader *native_new_and_init_int(classinfo *c, s4 i)
1030 {
1031         methodinfo *m;
1032         java_objectheader *o;
1033
1034         if (!c)
1035                 return *exceptionptr;
1036
1037         o = builtin_new(c);          /* create object          */
1038
1039         if (!o) return NULL;
1040
1041         /* find initializer */
1042
1043         m = class_findmethod(c,
1044                                                  utf_new_char("<init>"),
1045                                                  utf_new_char("(I)V"));
1046
1047         if (!m) {                                       /* initializer not found  */
1048                 if (verbose) {
1049                         char logtext[MAXLOGTEXT];
1050                         sprintf(logtext, "Warning: class has no instance-initializer: ");
1051                         utf_sprint_classname(logtext + strlen(logtext), c->name);
1052                         log_text(logtext);
1053                 }
1054                 return o;
1055         }
1056
1057         /* call initializer */
1058
1059         asm_calljavafunction(m, o, (void *) i, NULL, NULL);
1060
1061         return o;
1062 }
1063
1064
1065 java_objectheader *native_new_and_init_throwable(classinfo *c, java_lang_Throwable *t)
1066 {
1067         methodinfo *m;
1068         java_objectheader *o;
1069
1070         if (!c)
1071                 return *exceptionptr;
1072
1073         o = builtin_new(c);          /* create object          */
1074
1075         if (!o) return NULL;
1076
1077         /* find initializer */
1078
1079         m = class_findmethod(c,
1080                                                  utf_new_char("<init>"),
1081                                                  utf_new_char("(Ljava/lang/Throwable;)V"));
1082
1083         if (!m) {                                       /* initializer not found  */
1084                 if (verbose) {
1085                         char logtext[MAXLOGTEXT];
1086                         sprintf(logtext, "Warning: class has no instance-initializer: ");
1087                         utf_sprint_classname(logtext + strlen(logtext), c->name);
1088                         log_text(logtext);
1089                 }
1090                 return o;
1091         }
1092
1093         /* call initializer */
1094
1095         asm_calljavafunction(m, o, t, NULL, NULL);
1096
1097         return o;
1098 }
1099
1100
1101 /******************** function: stringtable_update ****************************
1102
1103         traverses the javastring hashtable and sets the vftbl-entries of
1104         javastrings which were temporarily set to NULL, because
1105         java.lang.Object was not yet loaded
1106
1107 *******************************************************************************/
1108
1109 void stringtable_update ()
1110 {
1111         java_lang_String *js;
1112         java_chararray *a;
1113         literalstring *s;       /* hashtable entry */
1114         int i;
1115
1116         for (i = 0; i < string_hash.size; i++) {
1117                 s = string_hash.ptr[i];
1118                 if (s) {
1119                         while (s) {
1120
1121                                 js = (java_lang_String *) s->string;
1122
1123                                 if (!js || !js->value)
1124                                         /* error in hashtable found */
1125                                         panic("invalid literalstring in hashtable");
1126
1127                                 a = js->value;
1128
1129                                 if (!js->header.vftbl)
1130                                         /* vftbl of javastring is NULL */
1131                                         js->header.vftbl = class_java_lang_String->vftbl;
1132
1133                                 if (!a->header.objheader.vftbl)
1134                                         /* vftbl of character-array is NULL */
1135                                         a->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1136
1137                                 /* follow link in external hash chain */
1138                                 s = s->hashlink;
1139                         }
1140                 }
1141         }
1142 }
1143
1144
1145 /************************* function: u2_utflength ***************************
1146
1147         returns the utf length in bytes of a u2 array
1148
1149 *****************************************************************************/
1150
1151 u4 u2_utflength(u2 *text, u4 u2_length)
1152 {
1153         u4 result_len =  0;  /* utf length in bytes  */
1154         u2 ch;               /* current unicode character */
1155         u4 len;
1156
1157         for (len = 0; len < u2_length; len++) {
1158                 /* next unicode character */
1159                 ch = *text++;
1160
1161                 /* determine bytes required to store unicode character as utf */
1162                 if (ch && (ch < 0x80))
1163                         result_len++;
1164                 else if (ch < 0x800)
1165                         result_len += 2;
1166                 else
1167                         result_len += 3;
1168         }
1169
1170     return result_len;
1171 }
1172
1173
1174 /********************* function: utf_new_u2 ***********************************
1175
1176         make utf symbol from u2 array,
1177         if isclassname is true '.' is replaced by '/'
1178
1179 *******************************************************************************/
1180
1181 utf *utf_new_u2(u2 *unicode_pos, u4 unicode_length, bool isclassname)
1182 {
1183         char *buffer; /* memory buffer for  unicode characters */
1184         char *pos;    /* pointer to current position in buffer */
1185         u4 left;      /* unicode characters left */
1186         u4 buflength; /* utf length in bytes of the u2 array  */
1187         utf *result;  /* resulting utf-string */
1188         int i;
1189
1190         /* determine utf length in bytes and allocate memory */
1191         /* printf("utf_new_u2: unicode_length=%d\n",unicode_length);            */
1192         buflength = u2_utflength(unicode_pos, unicode_length);
1193         buffer    = MNEW(char, buflength);
1194
1195         /* memory allocation failed */
1196         if (!buffer) {
1197                 printf("length: %d\n",buflength);
1198                 log_text("utf_new_u2:buffer==NULL");
1199         }
1200
1201         left = buflength;
1202         pos  = buffer;
1203
1204         for (i = 0; i++ < unicode_length; unicode_pos++) {
1205                 /* next unicode character */
1206                 u2 c = *unicode_pos;
1207
1208                 if ((c != 0) && (c < 0x80)) {
1209                         /* 1 character */
1210                         left--;
1211                 if ((int) left < 0) break;
1212                         /* convert classname */
1213                         if (isclassname && c == '.')
1214                                 *pos++ = '/';
1215                         else
1216                                 *pos++ = (char) c;
1217
1218                 } else if (c < 0x800) {
1219                         /* 2 characters */
1220                 unsigned char high = c >> 6;
1221                 unsigned char low  = c & 0x3F;
1222                         left = left - 2;
1223                 if ((int) left < 0) break;
1224                 *pos++ = high | 0xC0;
1225                 *pos++ = low  | 0x80;
1226
1227                 } else {
1228                 /* 3 characters */
1229                 char low  = c & 0x3f;
1230                 char mid  = (c >> 6) & 0x3F;
1231                 char high = c >> 12;
1232                         left = left - 3;
1233                 if ((int) left < 0) break;
1234                 *pos++ = high | 0xE0;
1235                 *pos++ = mid  | 0x80;
1236                 *pos++ = low  | 0x80;
1237                 }
1238         }
1239
1240         /* insert utf-string into symbol-table */
1241         result = utf_new(buffer,buflength);
1242
1243         MFREE(buffer, char, buflength);
1244
1245         return result;
1246 }
1247
1248
1249 /********************* function: javastring_toutf *****************************
1250
1251         make utf symbol from javastring
1252
1253 *******************************************************************************/
1254
1255 utf *javastring_toutf(java_lang_String *string, bool isclassname)
1256 {
1257         java_lang_String *str = (java_lang_String *) string;
1258
1259 /*      printf("javastring_toutf offset: %d, len %d\n",str->offset, str->count); */
1260 /*      fflush(stdout); */
1261
1262         return utf_new_u2(str->value->data + str->offset, str->count, isclassname);
1263 }
1264
1265
1266 /********************* function: literalstring_u2 *****************************
1267
1268     searches for the javastring with the specified u2-array in
1269     the string hashtable, if there is no such string a new one is
1270     created
1271
1272     if copymode is true a copy of the u2-array is made
1273
1274 *******************************************************************************/
1275
1276 java_objectheader *literalstring_u2(java_chararray *a, u4 length, u4 offset,
1277                                                                         bool copymode)
1278 {
1279     literalstring *s;                /* hashtable element */
1280     java_lang_String *js;            /* u2-array wrapped in javastring */
1281     java_chararray *stringdata;      /* copy of u2-array */
1282     u4 key;
1283     u4 slot;
1284     u2 i;
1285
1286 //#define DEBUG_LITERALSTRING_U2
1287 #ifdef DEBUG_LITERALSTRING_U2
1288     printf("literalstring_u2: length=%d, offset=%d\n", length, offset);
1289         fflush(stdout);
1290 #endif
1291
1292     /* find location in hashtable */
1293     key  = unicode_hashkey(a->data + offset, length);
1294     slot = key & (string_hash.size - 1);
1295     s    = string_hash.ptr[slot];
1296
1297     while (s) {
1298                 js = (java_lang_String *) s->string;
1299
1300                 if (length == js->count) {
1301                         /* compare text */
1302                         for (i = 0; i < length; i++) {
1303                                 if (a->data[offset + i] != js->value->data[i])
1304                                         goto nomatch;
1305                         }
1306
1307                         /* string already in hashtable, free memory */
1308                         if (!copymode)
1309                                 lit_mem_free(a, sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10);
1310
1311 #ifdef DEBUG_LITERALSTRING_U2
1312                         printf("literalstring_u2: foundentry at %p\n", js);
1313                         utf_display(javastring_toutf(js, 0));
1314                         printf("\n\n");
1315                         fflush(stdout);
1316 #endif
1317                         return (java_objectheader *) js;
1318                 }
1319
1320         nomatch:
1321                 /* follow link in external hash chain */
1322                 s = s->hashlink;
1323     }
1324
1325     if (copymode) {
1326                 /* create copy of u2-array for new javastring */
1327                 u4 arraysize = sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10;
1328                 stringdata = lit_mem_alloc(arraysize);
1329 /*              memcpy(stringdata, a, arraysize); */
1330                 memcpy(&(stringdata->header), &(a->header), sizeof(java_arrayheader));
1331                 memcpy(&(stringdata->data), &(a->data) + offset, sizeof(u2) * (length - 1) + 10);
1332
1333     } else {
1334                 stringdata = a;
1335         }
1336
1337     /* location in hashtable found, complete arrayheader */
1338     stringdata->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1339     stringdata->header.size = length;
1340
1341     /* create new javastring */
1342     js = LNEW(java_lang_String);
1343         /* TWISTI */
1344 /*      js->header.vftbl = class_java_lang_String->vftbl; */
1345     js->header.vftbl = class_load(class_new(utf_new_char("java/lang/String")))->vftbl;
1346     js->value  = stringdata;
1347     js->offset = 0;
1348     js->count  = length;
1349
1350     /* create new literalstring */
1351     s = NEW(literalstring);
1352     s->hashlink = string_hash.ptr[slot];
1353     s->string   = (java_objectheader *) js;
1354     string_hash.ptr[slot] = s;
1355
1356     /* update numbe of hashtable entries */
1357     string_hash.entries++;
1358
1359     /* reorganization of hashtable */
1360     if (string_hash.entries > (string_hash.size * 2)) {
1361                 /* reorganization of hashtable, average length of
1362          the external chains is approx. 2                */
1363
1364                 u4 i;
1365                 literalstring *s;
1366                 hashtable newhash; /* the new hashtable */
1367
1368                 /* create new hashtable, double the size */
1369                 init_hashtable(&newhash, string_hash.size * 2);
1370                 newhash.entries = string_hash.entries;
1371
1372                 /* transfer elements to new hashtable */
1373                 for (i = 0; i < string_hash.size; i++) {
1374                         s = string_hash.ptr[i];
1375                         while (s) {
1376                                 literalstring *nexts = s->hashlink;
1377                                 js   = (java_lang_String *) s->string;
1378                                 slot = unicode_hashkey(js->value->data, js->count) & (newhash.size - 1);
1379
1380                                 s->hashlink = newhash.ptr[slot];
1381                                 newhash.ptr[slot] = s;
1382
1383                                 /* follow link in external hash chain */
1384                                 s = nexts;
1385                         }
1386                 }
1387
1388                 /* dispose old table */
1389                 MFREE(string_hash.ptr, void*, string_hash.size);
1390                 string_hash = newhash;
1391     }
1392
1393 #ifdef DEBUG_LITERALSTRING_U2
1394         printf("literalstring_u2: newly created at %p\n", js);
1395         utf_display(javastring_toutf(js, 0));
1396         printf("\n\n");
1397         fflush(stdout);
1398 #endif
1399
1400     return (java_objectheader *) js;
1401 }
1402
1403
1404 /******************** Function: literalstring_new *****************************
1405
1406     creates a new javastring with the text of the utf-symbol
1407     and inserts it into the string hashtable
1408
1409 *******************************************************************************/
1410
1411 java_objectheader *literalstring_new(utf *u)
1412 {
1413     char *utf_ptr = u->text;         /* pointer to current unicode character in utf string */
1414     u4 utflength  = utf_strlen(u);   /* length of utf-string if uncompressed */
1415     java_chararray *a;               /* u2-array constructed from utf string */
1416     u4 i;
1417
1418     /* allocate memory */
1419     a = lit_mem_alloc(sizeof(java_chararray) + sizeof(u2) * (utflength - 1) + 10);
1420
1421     /* convert utf-string to u2-array */
1422     for (i = 0; i < utflength; i++)
1423                 a->data[i] = utf_nextu2(&utf_ptr);
1424
1425     return literalstring_u2(a, utflength, 0, false);
1426 }
1427
1428
1429 /********************** function: literalstring_free **************************
1430
1431         removes a javastring from memory
1432
1433 ******************************************************************************/
1434
1435 void literalstring_free(java_objectheader* sobj)
1436 {
1437         java_lang_String *s = (java_lang_String *) sobj;
1438         java_chararray *a = s->value;
1439
1440         /* dispose memory of java.lang.String object */
1441         LFREE(s, java_lang_String);
1442
1443         /* dispose memory of java-characterarray */
1444         LFREE(a, sizeof(java_chararray) + sizeof(u2) * (a->header.size - 1)); /* +10 ?? */
1445 }
1446
1447
1448 void copy_vftbl(vftbl **dest, vftbl *src)
1449 {
1450     *dest = src;
1451 #if 0
1452     /* XXX this kind of copying does not work (in the general
1453      * case). The interface tables would have to be copied, too. I
1454      * don't see why we should make a copy anyway. -Edwin
1455      */
1456         *dest = mem_alloc(sizeof(vftbl) + sizeof(methodptr)*(src->vftbllength-1));
1457         memcpy(*dest, src, sizeof(vftbl) - sizeof(methodptr));
1458         memcpy(&(*dest)->table, &src->table, src->vftbllength * sizeof(methodptr));
1459 #endif
1460 }
1461
1462
1463 /******************************************************************************************
1464
1465         creates method signature (excluding return type) from array of
1466         class-objects representing the parameters of the method
1467
1468 *******************************************************************************************/
1469
1470
1471 utf *create_methodsig(java_objectarray* types, char *retType)
1472 {
1473     char *buffer;       /* buffer for building the desciptor */
1474     char *pos;          /* current position in buffer */
1475     utf *result;        /* the method signature */
1476     u4 buffer_size = 3; /* minimal size=3: room for parenthesis and returntype */
1477     u4 i, j;
1478
1479     if (!types) return NULL;
1480
1481     /* determine required buffer-size */
1482     for (i = 0; i < types->header.size; i++) {
1483                 classinfo *c = (classinfo *) types->data[i];
1484                 buffer_size  = buffer_size + c->name->blength + 2;
1485     }
1486
1487     if (retType) buffer_size += strlen(retType);
1488
1489     /* allocate buffer */
1490     buffer = MNEW(u1, buffer_size);
1491     pos    = buffer;
1492
1493     /* method-desciptor starts with parenthesis */
1494     *pos++ = '(';
1495
1496     for (i = 0; i < types->header.size; i++) {
1497                 char ch;
1498
1499                 /* current argument */
1500             classinfo *c = (classinfo *) types->data[i];
1501
1502             /* current position in utf-text */
1503             char *utf_ptr = c->name->text;
1504
1505             /* determine type of argument */
1506             if ((ch = utf_nextu2(&utf_ptr)) == '[') {
1507                 /* arrayclass */
1508                 for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1509                                 *pos++ = *utf_ptr; /* copy text */
1510                         }
1511
1512             } else {
1513                         /* check for primitive types */
1514                         for (j = 0; j < PRIMITIVETYPE_COUNT; j++) {
1515                                 char *utf_pos   = utf_ptr - 1;
1516                                 char *primitive = primitivetype_table[j].wrapname;
1517
1518                                 /* compare text */
1519                                 while (utf_pos < utf_end(c->name)) {
1520                                         if (*utf_pos++ != *primitive++) goto nomatch;
1521                                 }
1522
1523                                 /* primitive type found */
1524                                 *pos++ = primitivetype_table[j].typesig;
1525                                 goto next_type;
1526
1527                         nomatch:
1528                                 ;
1529                         }
1530
1531                         /* no primitive type and no arrayclass, so must be object */
1532                         *pos++ = 'L';
1533
1534                         /* copy text */
1535                         for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1536                                 *pos++ = *utf_ptr;
1537                         }
1538
1539                         *pos++ = ';';
1540
1541                 next_type:
1542                         ;
1543                 }
1544     }
1545
1546     *pos++ = ')';
1547
1548     if (retType) {
1549                 for (i = 0; i < strlen(retType); i++) {
1550                         *pos++ = retType[i];
1551                 }
1552     }
1553
1554     /* create utf-string */
1555     result = utf_new(buffer, (pos - buffer));
1556     MFREE(buffer, u1, buffer_size);
1557
1558     return result;
1559 }
1560
1561
1562 /******************************************************************************************
1563
1564         retrieve the next argument or returntype from a descriptor
1565         and return the corresponding class
1566
1567 *******************************************************************************************/
1568
1569 classinfo *get_type(char **utf_ptr,char *desc_end, bool skip)
1570 {
1571     classinfo *c = class_from_descriptor(*utf_ptr,desc_end,utf_ptr,
1572                                          (skip) ? CLASSLOAD_SKIP : CLASSLOAD_LOAD);
1573     if (!c)
1574         /* unknown type */
1575         panic("illegal descriptor");
1576
1577     if (skip) return NULL;
1578
1579     use_class_as_object(c);
1580     return c;
1581 }
1582
1583
1584 /******************************************************************************************
1585
1586         use the descriptor of a method to generate a java/lang/Class array
1587         which contains the classes of the parametertypes of the method
1588
1589 *******************************************************************************************/
1590
1591 java_objectarray* get_parametertypes(methodinfo *m)
1592 {
1593     utf  *descr    =  m->descriptor;    /* method-descriptor */
1594     char *utf_ptr  =  descr->text;      /* current position in utf-text */
1595     char *desc_end =  utf_end(descr);   /* points behind utf string     */
1596     java_objectarray* result;
1597     int parametercount = 0;
1598     int i;
1599
1600     /* skip '(' */
1601     utf_nextu2(&utf_ptr);
1602
1603     /* determine number of parameters */
1604     while ( *utf_ptr != ')' ) {
1605         get_type(&utf_ptr,desc_end,true);
1606         parametercount++;
1607     }
1608
1609     /* create class-array */
1610     result = builtin_anewarray(parametercount, class_java_lang_Class);
1611
1612     utf_ptr  =  descr->text;
1613     utf_nextu2(&utf_ptr);
1614
1615     /* get returntype classes */
1616     for (i = 0; i < parametercount; i++)
1617             result->data[i] = (java_objectheader *) get_type(&utf_ptr,desc_end, false);
1618
1619     return result;
1620 }
1621
1622
1623
1624
1625
1626 /******************************************************************************************
1627
1628         get the exceptions which can be thrown by a method
1629
1630 *******************************************************************************************/
1631
1632 java_objectarray* get_exceptiontypes(methodinfo *m) {
1633     u2 exccount=m->thrownexceptionscount;
1634     u2 i;
1635     java_objectarray *result;
1636     /* create class-array */
1637     result = builtin_anewarray(exccount, class_java_lang_Class);
1638     for (i=0;i<exccount;i++) {
1639         java_objectheader *oh=(java_objectheader*)(m->thrownexceptions[i]);
1640         use_class_as_object(oh);
1641         result->data[i]=oh;
1642     }
1643     return result;
1644 }
1645
1646
1647
1648
1649
1650 /******************************************************************************************
1651
1652         get the returntype class of a method
1653
1654 *******************************************************************************************/
1655
1656 classinfo *get_returntype(methodinfo *m)
1657 {
1658         char *utf_ptr;   /* current position in utf-text */
1659         char *desc_end;  /* points behind utf string     */
1660         utf *desc = m->descriptor; /* method-descriptor  */
1661
1662         utf_ptr  = desc->text;
1663         desc_end = utf_end(desc);
1664
1665         /* ignore parametertypes */
1666         while ((utf_ptr<desc_end) && utf_nextu2(&utf_ptr)!=')')
1667                 /* skip */ ;
1668
1669         return get_type(&utf_ptr,desc_end, false);
1670 }
1671
1672
1673 /*****************************************************************************/
1674 /*****************************************************************************/
1675
1676
1677 /*--------------------------------------------------------*/
1678 void printNativeCall(nativeCall nc) {
1679   int i,j;
1680
1681   printf("\n%s's Native Methods call:\n",nc.classname); fflush(stdout);
1682   for (i=0; i<nc.methCnt; i++) {
1683       printf("\tMethod=%s %s\n",nc.methods[i].methodname, nc.methods[i].descriptor);fflush(stdout);
1684
1685     for (j=0; j<nc.callCnt[i]; j++) {
1686         printf("\t\t<%i,%i>aCalled = %s %s %s\n",i,j,
1687         nc.methods[i].methodCalls[j].classname,
1688         nc.methods[i].methodCalls[j].methodname,
1689         nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1690       }
1691     }
1692   printf("-+++++--------------------\n");fflush(stdout);
1693 }
1694
1695 /*--------------------------------------------------------*/
1696 void printCompNativeCall(nativeCompCall nc) {
1697   int i,j;
1698   printf("printCompNativeCall BEGIN\n");fflush(stdout);
1699   printf("\n%s's Native Comp Methods call:\n",nc.classname->text);fflush(stdout);
1700   utf_display(nc.classname); fflush(stdout);
1701
1702   for (i=0; i<nc.methCnt; i++) {
1703     printf("\tMethod=%s %s\n",nc.methods[i].methodname->text,nc.methods[i].descriptor->text);fflush(stdout);
1704     utf_display(nc.methods[i].methodname); fflush(stdout);
1705     utf_display(nc.methods[i].descriptor);fflush(stdout);
1706     printf("\n");fflush(stdout);
1707
1708     for (j=0; j<nc.callCnt[i]; j++) {
1709       printf("\t\t<%i,%i>bCalled = ",i,j);fflush(stdout);
1710         utf_display(nc.methods[i].methodCalls[j].classname);fflush(stdout);
1711         utf_display(nc.methods[i].methodCalls[j].methodname); fflush(stdout);
1712         utf_display(nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1713         printf("\n");fflush(stdout);
1714       }
1715     }
1716 printf("---------------------\n");fflush(stdout);
1717 }
1718
1719
1720 /*--------------------------------------------------------*/
1721 classMeth findNativeMethodCalls(utf *c, utf *m, utf *d )
1722 {
1723     int i = 0;
1724     int j = 0;
1725     int cnt = 0;
1726     classMeth mc;
1727     mc.i_class = i;
1728     mc.j_method = j;
1729     mc.methCnt = cnt;
1730
1731     return mc;
1732 }
1733
1734 /*--------------------------------------------------------*/
1735 nativeCall* findNativeClassCalls(char *aclassname ) {
1736 int i;
1737
1738 for (i=0;i<NATIVECALLSSIZE; i++) {
1739    /* convert table to utf later to speed up search */
1740    if (strcmp(nativeCalls[i].classname, aclassname) == 0)
1741         return &nativeCalls[i];
1742    }
1743
1744 return NULL;
1745 }
1746 /*--------------------------------------------------------*/
1747 /*--------------------------------------------------------*/
1748 void utfNativeCall(nativeCall nc, nativeCompCall *ncc) {
1749   int i,j;
1750
1751
1752   ncc->classname = utf_new_char(nc.classname);
1753   ncc->methCnt = nc.methCnt;
1754
1755   for (i=0; i<nc.methCnt; i++) {
1756     ncc->methods[i].methodname = utf_new_char(nc.methods[i].methodname);
1757     ncc->methods[i].descriptor = utf_new_char(nc.methods[i].descriptor);
1758     ncc->callCnt[i] = nc.callCnt[i];
1759
1760     for (j=0; j<nc.callCnt[i]; j++) {
1761
1762         ncc->methods[i].methodCalls[j].classname  = utf_new_char(nc.methods[i].methodCalls[j].classname);
1763
1764         if (strcmp("", nc.methods[i].methodCalls[j].methodname) != 0) {
1765           ncc->methods[i].methodCalls[j].methodname = utf_new_char(nc.methods[i].methodCalls[j].methodname);
1766           ncc->methods[i].methodCalls[j].descriptor = utf_new_char(nc.methods[i].methodCalls[j].descriptor);
1767           }
1768         else {
1769           ncc->methods[i].methodCalls[j].methodname = NULL;
1770           ncc->methods[i].methodCalls[j].descriptor = NULL;
1771           }
1772       }
1773     }
1774 }
1775
1776
1777
1778 /*--------------------------------------------------------*/
1779
1780 bool natcall2utf(bool natcallcompdone) {
1781 int i;
1782
1783 if (natcallcompdone)
1784         return true;
1785
1786 for (i=0;i<NATIVECALLSSIZE; i++) {
1787    utfNativeCall  (nativeCalls[i], &nativeCompCalls[i]);
1788    }
1789
1790 return true;
1791 }
1792
1793 /*--------------------------------------------------------*/
1794
1795
1796 java_objectarray *builtin_asm_createclasscontextarray(classinfo **end,classinfo **start) {
1797 #warning platform dependend
1798         java_objectarray *tmpArray;
1799         int i;
1800         classinfo **current;
1801         classinfo *c;
1802         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1803 /*      printf("end %p, start %p, size %ld\n",end,start,size);*/
1804         if (!class_java_lang_Class)
1805                 class_java_lang_Class = class_new(utf_new_char ("java/lang/Class"));
1806         if (!class_java_lang_SecurityManager)
1807                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1808         if (size>0) {
1809                 if (start==class_java_lang_SecurityManager) {
1810                         size--;
1811                         start--;
1812                 }
1813         }
1814         tmpArray=builtin_newarray(size, class_array_of(class_java_lang_Class)->vftbl);
1815
1816         for(i=0,current=start;i<size;i++,current--) {
1817                 c=*current;
1818 /*              printf("%d\n",i);
1819                 utf_display(c->name);*/
1820                 use_class_as_object(c);
1821                 tmpArray->data[i]=c;
1822         }
1823         return tmpArray;
1824
1825 }
1826
1827 java_lang_ClassLoader *builtin_asm_getclassloader(classinfo **end,classinfo **start) {
1828 #warning platform dependend
1829         int i;
1830         classinfo **current;
1831         classinfo *c;
1832         classinfo *privilegedAction;
1833         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1834 /*      log_text("builtin_asm_getclassloader");
1835         printf("end %p, start %p, size %ld\n",end,start,size);*/
1836
1837         if (!class_java_lang_SecurityManager)
1838                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1839         if (size>0) {
1840                 if (start==class_java_lang_SecurityManager) {
1841                         size--;
1842                         start--;
1843                 }
1844         }
1845
1846         privilegedAction=class_new(utf_new_char("java/security/PrivilegedAction"));
1847
1848         for(i=0,current=start;i<size;i++,current--) {
1849                 c=*current;
1850                 if (c==privilegedAction) return NULL;
1851                 if (c->classloader) return c->classloader;
1852         }
1853         return NULL;
1854
1855
1856
1857
1858 /*
1859         log_text("Java_java_lang_VMSecurityManager_currentClassLoader");
1860         init_systemclassloader();
1861
1862         return SystemClassLoader;*/
1863 }
1864
1865 /*
1866  * These are local overrides for various environment variables in Emacs.
1867  * Please do not remove this and leave it at the end of the file, where
1868  * Emacs will automagically detect them.
1869  * ---------------------------------------------------------------------
1870  * Local variables:
1871  * mode: c
1872  * indent-tabs-mode: t
1873  * c-basic-offset: 4
1874  * tab-width: 4
1875  * End:
1876  */