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 1190 2004-06-19 12:44:12Z 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         if (!c->classvftbl) {
 225                 c->classvftbl = true;
 226
 227                 c->header.vftbl = class_java_lang_Class->vftbl;
 228         }
 229
 230 }
 231
 232
 233 /*************************** include native methods ***************************/
 234
 235 #ifdef USE_GTK
 236 #include "nat/GdkGraphics.c"
 237 #include "nat/GtkComponentPeer.c"
 238 #include "nat/GdkPixbufDecoder.c"
 239 #include "nat/GtkScrollPanePeer.c"
 240 #include "nat/GtkFileDialogPeer.c"
 241 #include "nat/GtkLabelPeer.c"
 242 #endif
 243
 244
 245 /************************** tables for methods ********************************/
 246
 247 #undef JOWENN_DEBUG
 248 #undef JOWENN_DEBUG1
 249
 250 /* table for locating native methods */
 251 static struct nativeref {
 252         char *classname;
 253         char *methodname;
 254         char *descriptor;
 255         bool isstatic;
 256         functionptr func;
 257 } nativetable [] = {
 258
 259 #include "nativetable.hh"
 260
 261 };
 262
 263
 264 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
 265
 266 /* table for fast string comparison */
 267 static struct nativecompref {
 268         utf *classname;
 269         utf *methodname;
 270         utf *descriptor;
 271         bool isstatic;
 272         functionptr func;
 273 } nativecomptable [NATIVETABLESIZE];
 274
 275 /* string comparsion table initialized */
 276 static bool nativecompdone = false;
 277
 278
 279 /******************************************************************************/
 280 /******************************************************************************/
 281 #include "natcalls.h"
 282
 283 /* string call comparison table initialized */
 284
 285 /******************************************************************************/
 286 /******************************************************************************/
 287
 288 /* init_system_exceptions *****************************************************
 289
 290    load, link and compile exceptions used in the system
 291
 292 *******************************************************************************/
 293
 294 void init_system_exceptions()
 295 {
 296         classinfo *c;
 297
 298         /* java/lang/Throwable */
 299
 300         class_java_lang_Throwable =
 301                 class_new(utf_new_char(string_java_lang_Throwable));
 302         class_load(class_java_lang_Throwable);
 303         class_link(class_java_lang_Throwable);
 304 #if 0
 305         compile_all_class_methods(class_java_lang_Throwable);
 306
 307         /* java/lang/VMThrowable */
 308
 309         c = class_new(utf_new_char(string_java_lang_VMThrowable));
 310         class_load(c);
 311         class_link(c);
 312         compile_all_class_methods(c);
 313
 314         /* java/lang/ClassFormatError */
 315
 316         c = class_new(utf_new_char(string_java_lang_ClassFormatError));
 317         class_load(c);
 318         class_link(c);
 319         compile_all_class_methods(c);
 320
 321         /* java/lang/Error */
 322
 323         c = class_new(utf_new_char(string_java_lang_Error));
 324         class_load(c);
 325         class_link(c);
 326         compile_all_class_methods(c);
 327
 328         /* java/lang/Exception */
 329
 330         c = class_new(utf_new_char(string_java_lang_Exception));
 331         class_load(c);
 332         class_link(c);
 333         compile_all_class_methods(c);
 334
 335         /* java/lang/IncompatibleClassChangeError */
 336
 337         c = class_new(utf_new_char(string_java_lang_IncompatibleClassChangeError));
 338         class_load(c);
 339         class_link(c);
 340         compile_all_class_methods(c);
 341
 342         /* java/lang/LinkageError */
 343
 344         c = class_new(utf_new_char(string_java_lang_LinkageError));
 345         class_load(c);
 346         class_link(c);
 347         compile_all_class_methods(c);
 348
 349         /* java/lang/NoClassDefFoundError */
 350
 351         c = class_new(utf_new_char(string_java_lang_NoClassDefFoundError));
 352         class_load(c);
 353         class_link(c);
 354         compile_all_class_methods(c);
 355
 356         /* java/lang/NoSuchFieldError */
 357
 358         c = class_new(utf_new_char(string_java_lang_NoSuchFieldError));
 359         class_load(c);
 360         class_link(c);
 361         compile_all_class_methods(c);
 362
 363         /* java/lang/NoSuchMethodError */
 364
 365         c = class_new(utf_new_char(string_java_lang_NoSuchMethodError));
 366         class_load(c);
 367         class_link(c);
 368         compile_all_class_methods(c);
 369
 370         /* java/lang/OutOfMemoryError */
 371
 372         c = class_new(utf_new_char(string_java_lang_OutOfMemoryError));
 373         class_load(c);
 374         class_link(c);
 375         compile_all_class_methods(c);
 376
 377         /* java/lang/VerifyError */
 378
 379         c = class_new(utf_new_char(string_java_lang_VerifyError));
 380         class_load(c);
 381         class_link(c);
 382         compile_all_class_methods(c);
 383
 384         /* java/lang/VirtualMachineError */
 385
 386         c = class_new(utf_new_char(string_java_lang_VirtualMachineError));
 387         class_load(c);
 388         class_link(c);
 389         compile_all_class_methods(c);
 390 #endif
 391 }
 392
 393
 394 void compile_all_class_methods(classinfo *c)
 395 {
 396         s4 i;
 397
 398         for (i = 0; i < c->methodscount; i++) {
 399                 (void) jit_compile(&(c->methods[i]));
 400         }
 401 }
 402
 403
 404 static void throw_exception_exit_intern(bool doexit)
 405 {
 406         java_objectheader *xptr;
 407         classinfo *c;
 408         methodinfo *pss;
 409
 410         if (*exceptionptr) {
 411                 xptr = *exceptionptr;
 412
 413                 /* clear exception, because we are calling jit code again */
 414                 *exceptionptr = NULL;
 415
 416                 c = xptr->vftbl->class;
 417
 418                 pss = class_resolveclassmethod(c,
 419                                                                            utf_new_char("printStackTrace"),
 420                                                                            utf_new_char("()V"),
 421                                                                            class_java_lang_Object,
 422                                                                            false);
 423
 424                 /* print the stacktrace */
 425                 if (pss) {
 426                         asm_calljavafunction(pss, xptr, NULL, NULL, NULL);
 427
 428                         /* this normally means, we are EXTREMLY out of memory, but may be
 429                            any other exception */
 430                         if (*exceptionptr) {
 431                                 utf_fprint_classname(stderr, c->name);
 432                                 fprintf(stderr, "\n");
 433                         }
 434
 435                 } else {
 436                         utf_fprint_classname(stderr, c->name);
 437                         fprintf(stderr, ": printStackTrace()V not found!\n");
 438                 }
 439
 440                 fflush(stderr);
 441
 442                 /* good bye! */
 443                 if (doexit) {
 444                         exit(1);
 445                 }
 446         }
 447 }
 448
 449
 450 void throw_exception()
 451 {
 452         throw_exception_exit_intern(false);
 453 }
 454
 455
 456 void throw_exception_exit()
 457 {
 458         throw_exception_exit_intern(true);
 459 }
 460
 461
 462 void throw_main_exception()
 463 {
 464         fprintf(stderr, "Exception in thread \"main\" ");
 465         fflush(stderr);
 466
 467         throw_exception_exit_intern(false);
 468 }
 469
 470
 471 void throw_main_exception_exit()
 472 {
 473         fprintf(stderr, "Exception in thread \"main\" ");
 474         fflush(stderr);
 475
 476         throw_exception_exit_intern(true);
 477 }
 478
 479
 480 void throw_cacao_exception_exit(char *exception, char *message)
 481 {
 482         s4 i;
 483         char *tmp;
 484         s4 len;
 485
 486         len = strlen(exception);
 487         tmp = MNEW(char, len);
 488         strncpy(tmp, exception, len);
 489
 490         /* convert to classname */
 491
 492         for (i = len - 1; i >= 0; i--) {
 493                 if (tmp[i] == '/') tmp[i] = '.';
 494         }
 495
 496         fprintf(stderr, "Exception in thread \"main\" %s", tmp);
 497
 498         MFREE(tmp, char, len);
 499
 500         if (strlen(message) > 0)
 501                 fprintf(stderr, ": %s", message);
 502
 503         fprintf(stderr, "\n");
 504         fflush(stderr);
 505
 506         /* good bye! */
 507         exit(1);
 508 }
 509
 510
 511 #define CREATENEW_EXCEPTION(ex) \
 512         java_objectheader *newEx; \
 513         java_objectheader *oldexception=*exceptionptr;\
 514         *exceptionptr=0;\
 515         newEx=ex;\
 516         *exceptionptr=oldexception;\
 517         return newEx;
 518
 519 java_objectheader *new_exception(char *classname)
 520 {
 521         classinfo *c = class_new(utf_new_char(classname));
 522
 523         CREATENEW_EXCEPTION(native_new_and_init(c));
 524 }
 525
 526 java_objectheader *new_exception_message(char *classname, char *message)
 527 {
 528         classinfo *c = class_new(utf_new_char(classname));
 529
 530         CREATENEW_EXCEPTION(native_new_and_init_string(c, javastring_new_char(message)));
 531 }
 532
 533
 534 java_objectheader *new_exception_throwable(char *classname, java_lang_Throwable *throwable)
 535 {
 536         classinfo *c = class_new(utf_new_char(classname));
 537
 538         CREATENEW_EXCEPTION(native_new_and_init_throwable(c, throwable));
 539 }
 540
 541
 542 java_objectheader *new_exception_utfmessage(char *classname, utf *message)
 543 {
 544         classinfo *c = class_new(utf_new_char(classname));
 545
 546         CREATENEW_EXCEPTION(native_new_and_init_string(c, javastring_new(message)));
 547 }
 548
 549
 550 java_objectheader *new_exception_javastring(char *classname, java_lang_String *message)
 551 {
 552         classinfo *c = class_new(utf_new_char(classname));
 553
 554         CREATENEW_EXCEPTION(native_new_and_init_string(c, message));
 555 }
 556
 557
 558 java_objectheader *new_exception_int(char *classname, s4 i)
 559 {
 560         classinfo *c = class_new(utf_new_char(classname));
 561
 562         CREATENEW_EXCEPTION(native_new_and_init_int(c, i));
 563 }
 564
 565
 566 /*********************** function: native_loadclasses **************************
 567
 568         load classes required for native methods
 569
 570 *******************************************************************************/
 571
 572 void native_loadclasses()
 573 {
 574         static int classesLoaded = 0; /*temporary hack JoWenn*/
 575
 576         if (classesLoaded)
 577                 return;
 578
 579         classesLoaded = 1;
 580
 581         class_java_lang_Cloneable =
 582                 class_new(utf_new_char("java/lang/Cloneable"));
 583         class_load(class_java_lang_Cloneable);
 584         class_link(class_java_lang_Cloneable);
 585
 586         class_java_lang_Class =
 587                 class_new(utf_new_char("java/lang/Class"));
 588         class_load(class_java_lang_Class);
 589         class_link(class_java_lang_Class);
 590
 591         class_java_lang_VMClass =
 592                 class_new(utf_new_char("java/lang/VMClass"));
 593         class_load(class_java_lang_VMClass);
 594         class_link(class_java_lang_VMClass);
 595
 596         class_java_lang_ClassLoader =
 597                 class_new(utf_new_char("java/lang/ClassLoader"));
 598         class_load(class_java_lang_ClassLoader);
 599         class_link(class_java_lang_ClassLoader);
 600
 601         /* load classes for wrapping primitive types */
 602         class_java_lang_Double = class_new(utf_new_char("java/lang/Double"));
 603         class_load(class_java_lang_Double);
 604         class_link(class_java_lang_Double);
 605
 606         class_java_lang_Float = class_new(utf_new_char("java/lang/Float"));
 607         class_load(class_java_lang_Float);
 608         class_link(class_java_lang_Float);
 609
 610         class_java_lang_Character =     class_new(utf_new_char("java/lang/Character"));
 611         class_load(class_java_lang_Character);
 612         class_link(class_java_lang_Character);
 613
 614         class_java_lang_Integer = class_new(utf_new_char("java/lang/Integer"));
 615         class_load(class_java_lang_Integer);
 616         class_link(class_java_lang_Integer);
 617
 618         class_java_lang_Long = class_new(utf_new_char("java/lang/Long"));
 619         class_load(class_java_lang_Long);
 620         class_link(class_java_lang_Long);
 621
 622         class_java_lang_Byte = class_new(utf_new_char("java/lang/Byte"));
 623         class_load(class_java_lang_Byte);
 624         class_link(class_java_lang_Byte);
 625
 626         class_java_lang_Short = class_new(utf_new_char("java/lang/Short"));
 627         class_load(class_java_lang_Short);
 628         class_link(class_java_lang_Short);
 629
 630         class_java_lang_Boolean = class_new(utf_new_char("java/lang/Boolean"));
 631         class_load(class_java_lang_Boolean);
 632         class_link(class_java_lang_Boolean);
 633
 634         class_java_lang_Void = class_new(utf_new_char("java/lang/Void"));
 635         class_load(class_java_lang_Void);
 636         class_link(class_java_lang_Void);
 637
 638 }
 639
 640
 641 /*****************************************************************************
 642
 643         create systemclassloader object and initialize instance fields
 644
 645 ******************************************************************************/
 646
 647 void init_systemclassloader()
 648 {
 649         log_text("init_systemclassloader");
 650         if (!SystemClassLoader) {
 651                 native_loadclasses();
 652                 log_text("Initializing new system class loader");
 653                 /* create object and call initializer */
 654                 SystemClassLoader = (java_lang_ClassLoader *) native_new_and_init(class_new(utf_new_char("gnu/java/lang/SystemClassLoader")));
 655
 656                 /* systemclassloader has no parent */
 657                 SystemClassLoader->parent      = NULL;
 658                 SystemClassLoader->initialized = true;
 659         }
 660         log_text("leaving system class loader");
 661 }
 662
 663
 664 /********************* function: native_setclasspath **************************/
 665
 666 void native_setclasspath(char *path)
 667 {
 668         /* set searchpath for classfiles */
 669         classpath = path;
 670 }
 671
 672
 673 /*********************** Function: native_findfunction *************************
 674
 675         Looks up a method (must have the same class name, method name, descriptor
 676         and 'static'ness) and returns a function pointer to it.
 677         Returns: function pointer or NULL (if there is no such method)
 678
 679         Remark: For faster operation, the names/descriptors are converted from C
 680                 strings to Unicode the first time this function is called.
 681
 682 *******************************************************************************/
 683
 684 functionptr native_findfunction(utf *cname, utf *mname,
 685                                                                 utf *desc, bool isstatic)
 686 {
 687         int i;
 688         /* entry of table for fast string comparison */
 689         struct nativecompref *n;
 690         /* for warning message if no function is found */
 691         char *buffer;
 692         int buffer_len;
 693
 694         isstatic = isstatic ? true : false;
 695
 696         if (!nativecompdone) {
 697                 for (i = 0; i < NATIVETABLESIZE; i++) {
 698                         nativecomptable[i].classname  =
 699                                 utf_new_char(nativetable[i].classname);
 700                         nativecomptable[i].methodname =
 701                                 utf_new_char(nativetable[i].methodname);
 702                         nativecomptable[i].descriptor =
 703                                 utf_new_char(nativetable[i].descriptor);
 704                         nativecomptable[i].isstatic   =
 705                                 nativetable[i].isstatic;
 706                         nativecomptable[i].func       =
 707                                 nativetable[i].func;
 708                 }
 709                 nativecompdone = true;
 710         }
 711
 712 #ifdef JOWENN_DEBUG
 713         buffer_len =
 714                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 715
 716         buffer = MNEW(char, buffer_len);
 717
 718         strcpy(buffer, "searching matching function in native table:");
 719         utf_sprint(buffer+strlen(buffer), mname);
 720         strcpy(buffer+strlen(buffer), ": ");
 721         utf_sprint(buffer+strlen(buffer), desc);
 722         strcpy(buffer+strlen(buffer), " for class ");
 723         utf_sprint(buffer+strlen(buffer), cname);
 724
 725         log_text(buffer);
 726
 727         MFREE(buffer, char, buffer_len);
 728 #endif
 729
 730         for (i = 0; i < NATIVETABLESIZE; i++) {
 731                 n = &(nativecomptable[i]);
 732
 733                 if (cname == n->classname && mname == n->methodname &&
 734                     desc == n->descriptor && isstatic == n->isstatic)
 735                         return n->func;
 736 #ifdef JOWENN_DEBUG
 737                         else {
 738                                 if (cname == n->classname && mname == n->methodname )  log_text("static and descriptor mismatch");
 739
 740                                 else {
 741                                         buffer_len =
 742                                           utf_strlen(n->classname) + utf_strlen(n->methodname) + utf_strlen(n->descriptor) + 64;
 743
 744                                         buffer = MNEW(char, buffer_len);
 745
 746                                         strcpy(buffer, "comparing with:");
 747                                         utf_sprint(buffer+strlen(buffer), n->methodname);
 748                                         strcpy (buffer+strlen(buffer), ": ");
 749                                         utf_sprint(buffer+strlen(buffer), n->descriptor);
 750                                         strcpy(buffer+strlen(buffer), " for class ");
 751                                         utf_sprint(buffer+strlen(buffer), n->classname);
 752
 753                                         log_text(buffer);
 754
 755                                         MFREE(buffer, char, buffer_len);
 756                                 }
 757                         }
 758 #endif
 759         }
 760
 761
 762         /* no function was found, display warning */
 763
 764         buffer_len =
 765                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 766
 767         buffer = MNEW(char, buffer_len);
 768
 769         strcpy(buffer, "warning: native function ");
 770         utf_sprint(buffer + strlen(buffer), mname);
 771         strcpy(buffer + strlen(buffer), ": ");
 772         utf_sprint(buffer + strlen(buffer), desc);
 773         strcpy(buffer + strlen(buffer), " not found in class ");
 774         utf_sprint(buffer + strlen(buffer), cname);
 775
 776         log_text(buffer);
 777
 778         MFREE(buffer, char, buffer_len);
 779
 780 /*      exit(1); */
 781
 782         /* keep compiler happy */
 783         return NULL;
 784 }
 785
 786
 787 /********************** function: javastring_new *******************************
 788
 789         creates a new object of type java/lang/String with the text of
 790         the specified utf8-string
 791
 792         return: pointer to the string or NULL if memory is exhausted.
 793
 794 *******************************************************************************/
 795
 796 java_lang_String *javastring_new(utf *u)
 797 {
 798         char *utf_ptr = u->text;        /* current utf character in utf string    */
 799         int utflength = utf_strlen(u);  /* length of utf-string if uncompressed   */
 800         java_lang_String *s;                /* result-string                          */
 801         java_chararray *a;
 802         s4 i;
 803
 804         s = (java_lang_String *) builtin_new(class_java_lang_String);
 805         a = builtin_newarray_char(utflength);
 806
 807         /* javastring or character-array could not be created */
 808         if (!a || !s)
 809                 return NULL;
 810
 811         /* decompress utf-string */
 812         for (i = 0; i < utflength; i++)
 813                 a->data[i] = utf_nextu2(&utf_ptr);
 814
 815         /* set fields of the javastring-object */
 816         s->value  = a;
 817         s->offset = 0;
 818         s->count  = utflength;
 819
 820         return s;
 821 }
 822
 823
 824 /********************** function: javastring_new_char **************************
 825
 826         creates a new java/lang/String object which contains the convertet
 827         C-string passed via text.
 828
 829         return: the object pointer or NULL if memory is exhausted.
 830
 831 *******************************************************************************/
 832
 833 java_lang_String *javastring_new_char(char *text)
 834 {
 835         s4 i;
 836         s4 len = strlen(text); /* length of the string */
 837         java_lang_String *s;   /* result-string */
 838         java_chararray *a;
 839
 840         s = (java_lang_String *) builtin_new(class_java_lang_String);
 841         a = builtin_newarray_char(len);
 842
 843         /* javastring or character-array could not be created */
 844         if (!a || !s)
 845                 return NULL;
 846
 847         /* copy text */
 848         for (i = 0; i < len; i++)
 849                 a->data[i] = text[i];
 850
 851         /* set fields of the javastring-object */
 852         s->value  = a;
 853         s->offset = 0;
 854         s->count  = len;
 855
 856         return s;
 857 }
 858
 859
 860 /************************* function javastring_tochar **************************
 861
 862         converts a Java string into a C string.
 863
 864         return: pointer to C string
 865
 866         Caution: every call of this function overwrites the previous string !!!
 867
 868 *******************************************************************************/
 869
 870 static char stringbuffer[MAXSTRINGSIZE];
 871
 872 char *javastring_tochar(java_objectheader *so)
 873 {
 874         java_lang_String *s = (java_lang_String *) so;
 875         java_chararray *a;
 876         s4 i;
 877
 878         if (!s)
 879                 return "";
 880
 881         a = s->value;
 882
 883         if (!a)
 884                 return "";
 885
 886         if (s->count > MAXSTRINGSIZE)
 887                 return "";
 888
 889         for (i = 0; i < s->count; i++)
 890                 stringbuffer[i] = a->data[s->offset + i];
 891
 892         stringbuffer[i] = '\0';
 893
 894         return stringbuffer;
 895 }
 896
 897
 898 /****************** function class_findfield_approx ****************************
 899
 900         searches in 'classinfo'-structure for a field with the
 901         specified name
 902
 903 *******************************************************************************/
 904
 905 fieldinfo *class_findfield_approx(classinfo *c, utf *name)
 906 {
 907         s4 i;
 908
 909         for (i = 0; i < c->fieldscount; i++) {
 910                 /* compare field names */
 911                 if ((c->fields[i].name == name))
 912                         return &(c->fields[i]);
 913         }
 914
 915         /* field was not found, raise exception */
 916         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 917
 918         return NULL;
 919 }
 920
 921
 922 s4 class_findfield_index_approx(classinfo *c, utf *name)
 923 {
 924         s4 i;
 925
 926         for (i = 0; i < c->fieldscount; i++) {
 927                 /* compare field names */
 928                 if ((c->fields[i].name == name))
 929                         return i;
 930         }
 931
 932         /* field was not found, raise exception */
 933         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 934
 935         return -1;
 936 }
 937
 938
 939 /********************** function: native_new_and_init *************************
 940
 941         Creates a new object on the heap and calls the initializer.
 942         Returns the object pointer or NULL if memory is exhausted.
 943
 944 *******************************************************************************/
 945
 946 java_objectheader *native_new_and_init(classinfo *c)
 947 {
 948         methodinfo *m;
 949         java_objectheader *o;
 950
 951         if (!c)
 952                 return *exceptionptr;
 953
 954         o = builtin_new(c);                 /* create object                      */
 955
 956         if (!o)
 957                 return NULL;
 958
 959         /* find initializer */
 960
 961         m = class_findmethod(c,
 962                                                  utf_new_char("<init>"),
 963                                                  utf_new_char("()V"));
 964
 965         if (!m) {                           /* initializer not found              */
 966                 if (verbose) {
 967                         char logtext[MAXLOGTEXT];
 968                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 969                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 970                         log_text(logtext);
 971                 }
 972                 return o;
 973         }
 974
 975         /* call initializer */
 976
 977         asm_calljavafunction(m, o, NULL, NULL, NULL);
 978
 979         return o;
 980 }
 981
 982
 983 java_objectheader *native_new_and_init_string(classinfo *c, java_lang_String *s)
 984 {
 985         methodinfo *m;
 986         java_objectheader *o;
 987
 988         if (!c)
 989                 return *exceptionptr;
 990
 991         o = builtin_new(c);          /* create object          */
 992
 993         if (!o)
 994                 return NULL;
 995
 996         /* find initializer */
 997
 998         m = class_findmethod(c,
 999                                                  utf_new_char("<init>"),
1000                                                  utf_new_char("(Ljava/lang/String;)V"));
1001
1002         if (!m) {                                       /* initializer not found  */
1003                 if (verbose) {
1004                         char logtext[MAXLOGTEXT];
1005                         sprintf(logtext, "Warning: class has no instance-initializer: ");
1006                         utf_sprint_classname(logtext + strlen(logtext), c->name);
1007                         log_text(logtext);
1008                 }
1009                 return o;
1010         }
1011
1012         /* call initializer */
1013
1014         asm_calljavafunction(m, o, s, NULL, NULL);
1015
1016         return o;
1017 }
1018
1019
1020 java_objectheader *native_new_and_init_int(classinfo *c, s4 i)
1021 {
1022         methodinfo *m;
1023         java_objectheader *o;
1024
1025         if (!c)
1026                 return *exceptionptr;
1027
1028         o = builtin_new(c);          /* create object          */
1029
1030         if (!o) return NULL;
1031
1032         /* find initializer */
1033
1034         m = class_findmethod(c,
1035                                                  utf_new_char("<init>"),
1036                                                  utf_new_char("(I)V"));
1037
1038         if (!m) {                                       /* initializer not found  */
1039                 if (verbose) {
1040                         char logtext[MAXLOGTEXT];
1041                         sprintf(logtext, "Warning: class has no instance-initializer: ");
1042                         utf_sprint_classname(logtext + strlen(logtext), c->name);
1043                         log_text(logtext);
1044                 }
1045                 return o;
1046         }
1047
1048         /* call initializer */
1049
1050 #if defined(__I386__) || defined(__POWERPC__)
1051         asm_calljavafunction(m, o, (void *) i, NULL, NULL);
1052 #else
1053         asm_calljavafunction(m, o, (void *) (s8) i, NULL, NULL);
1054 #endif
1055
1056         return o;
1057 }
1058
1059
1060 java_objectheader *native_new_and_init_throwable(classinfo *c, java_lang_Throwable *t)
1061 {
1062         methodinfo *m;
1063         java_objectheader *o;
1064
1065         if (!c)
1066                 return *exceptionptr;
1067
1068         o = builtin_new(c);          /* create object          */
1069
1070         if (!o) return NULL;
1071
1072         /* find initializer */
1073
1074         m = class_findmethod(c,
1075                                                  utf_new_char("<init>"),
1076                                                  utf_new_char("(Ljava/lang/Throwable;)V"));
1077
1078         if (!m) {                                       /* initializer not found  */
1079                 if (verbose) {
1080                         char logtext[MAXLOGTEXT];
1081                         sprintf(logtext, "Warning: class has no instance-initializer: ");
1082                         utf_sprint_classname(logtext + strlen(logtext), c->name);
1083                         log_text(logtext);
1084                 }
1085                 return o;
1086         }
1087
1088         /* call initializer */
1089
1090         asm_calljavafunction(m, o, t, NULL, NULL);
1091
1092         return o;
1093 }
1094
1095
1096 /******************** function: stringtable_update ****************************
1097
1098         traverses the javastring hashtable and sets the vftbl-entries of
1099         javastrings which were temporarily set to NULL, because
1100         java.lang.Object was not yet loaded
1101
1102 *******************************************************************************/
1103
1104 void stringtable_update ()
1105 {
1106         java_lang_String *js;
1107         java_chararray *a;
1108         literalstring *s;       /* hashtable entry */
1109         int i;
1110
1111         for (i = 0; i < string_hash.size; i++) {
1112                 s = string_hash.ptr[i];
1113                 if (s) {
1114                         while (s) {
1115
1116                                 js = (java_lang_String *) s->string;
1117
1118                                 if (!js || !js->value)
1119                                         /* error in hashtable found */
1120                                         panic("invalid literalstring in hashtable");
1121
1122                                 a = js->value;
1123
1124                                 if (!js->header.vftbl)
1125                                         /* vftbl of javastring is NULL */
1126                                         js->header.vftbl = class_java_lang_String->vftbl;
1127
1128                                 if (!a->header.objheader.vftbl)
1129                                         /* vftbl of character-array is NULL */
1130                                         a->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1131
1132                                 /* follow link in external hash chain */
1133                                 s = s->hashlink;
1134                         }
1135                 }
1136         }
1137 }
1138
1139
1140 /************************* function: u2_utflength ***************************
1141
1142         returns the utf length in bytes of a u2 array
1143
1144 *****************************************************************************/
1145
1146 u4 u2_utflength(u2 *text, u4 u2_length)
1147 {
1148         u4 result_len =  0;  /* utf length in bytes  */
1149         u2 ch;               /* current unicode character */
1150         u4 len;
1151
1152         for (len = 0; len < u2_length; len++) {
1153                 /* next unicode character */
1154                 ch = *text++;
1155
1156                 /* determine bytes required to store unicode character as utf */
1157                 if (ch && (ch < 0x80))
1158                         result_len++;
1159                 else if (ch < 0x800)
1160                         result_len += 2;
1161                 else
1162                         result_len += 3;
1163         }
1164
1165     return result_len;
1166 }
1167
1168
1169 /********************* function: utf_new_u2 ***********************************
1170
1171         make utf symbol from u2 array,
1172         if isclassname is true '.' is replaced by '/'
1173
1174 *******************************************************************************/
1175
1176 utf *utf_new_u2(u2 *unicode_pos, u4 unicode_length, bool isclassname)
1177 {
1178         char *buffer; /* memory buffer for  unicode characters */
1179         char *pos;    /* pointer to current position in buffer */
1180         u4 left;      /* unicode characters left */
1181         u4 buflength; /* utf length in bytes of the u2 array  */
1182         utf *result;  /* resulting utf-string */
1183         int i;
1184
1185         /* determine utf length in bytes and allocate memory */
1186         /* printf("utf_new_u2: unicode_length=%d\n",unicode_length);            */
1187         buflength = u2_utflength(unicode_pos, unicode_length);
1188         buffer    = MNEW(char, buflength);
1189
1190         left = buflength;
1191         pos  = buffer;
1192
1193         for (i = 0; i++ < unicode_length; unicode_pos++) {
1194                 /* next unicode character */
1195                 u2 c = *unicode_pos;
1196
1197                 if ((c != 0) && (c < 0x80)) {
1198                         /* 1 character */
1199                         left--;
1200                 if ((int) left < 0) break;
1201                         /* convert classname */
1202                         if (isclassname && c == '.')
1203                                 *pos++ = '/';
1204                         else
1205                                 *pos++ = (char) c;
1206
1207                 } else if (c < 0x800) {
1208                         /* 2 characters */
1209                 unsigned char high = c >> 6;
1210                 unsigned char low  = c & 0x3F;
1211                         left = left - 2;
1212                 if ((int) left < 0) break;
1213                 *pos++ = high | 0xC0;
1214                 *pos++ = low  | 0x80;
1215
1216                 } else {
1217                 /* 3 characters */
1218                 char low  = c & 0x3f;
1219                 char mid  = (c >> 6) & 0x3F;
1220                 char high = c >> 12;
1221                         left = left - 3;
1222                 if ((int) left < 0) break;
1223                 *pos++ = high | 0xE0;
1224                 *pos++ = mid  | 0x80;
1225                 *pos++ = low  | 0x80;
1226                 }
1227         }
1228
1229         /* insert utf-string into symbol-table */
1230         result = utf_new(buffer,buflength);
1231
1232         MFREE(buffer, char, buflength);
1233
1234         return result;
1235 }
1236
1237
1238 /********************* function: javastring_toutf *****************************
1239
1240         make utf symbol from javastring
1241
1242 *******************************************************************************/
1243
1244 utf *javastring_toutf(java_lang_String *string, bool isclassname)
1245 {
1246         java_lang_String *str = (java_lang_String *) string;
1247
1248 /*      printf("javastring_toutf offset: %d, len %d\n",str->offset, str->count); */
1249 /*      fflush(stdout); */
1250
1251         return utf_new_u2(str->value->data + str->offset, str->count, isclassname);
1252 }
1253
1254
1255 /********************* function: literalstring_u2 *****************************
1256
1257     searches for the javastring with the specified u2-array in
1258     the string hashtable, if there is no such string a new one is
1259     created
1260
1261     if copymode is true a copy of the u2-array is made
1262
1263 *******************************************************************************/
1264
1265 java_objectheader *literalstring_u2(java_chararray *a, u4 length, u4 offset,
1266                                                                         bool copymode)
1267 {
1268     literalstring *s;                /* hashtable element */
1269     java_lang_String *js;            /* u2-array wrapped in javastring */
1270     java_chararray *stringdata;      /* copy of u2-array */
1271         classinfo *c;
1272     u4 key;
1273     u4 slot;
1274     u2 i;
1275
1276 //#define DEBUG_LITERALSTRING_U2
1277 #ifdef DEBUG_LITERALSTRING_U2
1278     printf("literalstring_u2: length=%d, offset=%d\n", length, offset);
1279         fflush(stdout);
1280 #endif
1281
1282     /* find location in hashtable */
1283     key  = unicode_hashkey(a->data + offset, length);
1284     slot = key & (string_hash.size - 1);
1285     s    = string_hash.ptr[slot];
1286
1287     while (s) {
1288                 js = (java_lang_String *) s->string;
1289
1290                 if (length == js->count) {
1291                         /* compare text */
1292                         for (i = 0; i < length; i++) {
1293                                 if (a->data[offset + i] != js->value->data[i])
1294                                         goto nomatch;
1295                         }
1296
1297                         /* string already in hashtable, free memory */
1298                         if (!copymode)
1299                                 lit_mem_free(a, sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10);
1300
1301 #ifdef DEBUG_LITERALSTRING_U2
1302                         printf("literalstring_u2: foundentry at %p\n", js);
1303                         utf_display(javastring_toutf(js, 0));
1304                         printf("\n\n");
1305                         fflush(stdout);
1306 #endif
1307                         return (java_objectheader *) js;
1308                 }
1309
1310         nomatch:
1311                 /* follow link in external hash chain */
1312                 s = s->hashlink;
1313     }
1314
1315     if (copymode) {
1316                 /* create copy of u2-array for new javastring */
1317                 u4 arraysize = sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10;
1318                 stringdata = lit_mem_alloc(arraysize);
1319 /*              memcpy(stringdata, a, arraysize); */
1320                 memcpy(&(stringdata->header), &(a->header), sizeof(java_arrayheader));
1321                 memcpy(&(stringdata->data), &(a->data) + offset, sizeof(u2) * (length - 1) + 10);
1322
1323     } else {
1324                 stringdata = a;
1325         }
1326
1327     /* location in hashtable found, complete arrayheader */
1328     stringdata->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1329     stringdata->header.size = length;
1330
1331         /* if we use eager loading, we have to check loaded String class */
1332         if (opt_eager) {
1333                 class_java_lang_String =
1334                         class_new_intern(utf_new_char("java/lang/String"));
1335
1336                 if (!class_load(class_java_lang_String))
1337                         return NULL;
1338
1339                 list_addfirst(&unlinkedclasses, class_java_lang_String);
1340         }
1341
1342     /* create new javastring */
1343     js = LNEW(java_lang_String);
1344         js->header.vftbl = class_java_lang_String->vftbl;
1345     js->value  = stringdata;
1346     js->offset = 0;
1347     js->count  = length;
1348
1349 #ifdef DEBUG_LITERALSTRING_U2
1350         printf("literalstring_u2: newly created at %p\n", js);
1351         utf_display(javastring_toutf(js, 0));
1352         printf("\n\n");
1353         fflush(stdout);
1354 #endif
1355
1356     /* create new literalstring */
1357     s = NEW(literalstring);
1358     s->hashlink = string_hash.ptr[slot];
1359     s->string   = (java_objectheader *) js;
1360     string_hash.ptr[slot] = s;
1361
1362     /* update number of hashtable entries */
1363     string_hash.entries++;
1364
1365     /* reorganization of hashtable */
1366     if (string_hash.entries > (string_hash.size * 2)) {
1367                 /* reorganization of hashtable, average length of
1368          the external chains is approx. 2                */
1369
1370                 u4 i;
1371                 literalstring *s;
1372                 hashtable newhash; /* the new hashtable */
1373
1374                 /* create new hashtable, double the size */
1375                 init_hashtable(&newhash, string_hash.size * 2);
1376                 newhash.entries = string_hash.entries;
1377
1378                 /* transfer elements to new hashtable */
1379                 for (i = 0; i < string_hash.size; i++) {
1380                         s = string_hash.ptr[i];
1381                         while (s) {
1382                                 literalstring *nexts = s->hashlink;
1383                                 js   = (java_lang_String *) s->string;
1384                                 slot = unicode_hashkey(js->value->data, js->count) & (newhash.size - 1);
1385
1386                                 s->hashlink = newhash.ptr[slot];
1387                                 newhash.ptr[slot] = s;
1388
1389                                 /* follow link in external hash chain */
1390                                 s = nexts;
1391                         }
1392                 }
1393
1394                 /* dispose old table */
1395                 MFREE(string_hash.ptr, void*, string_hash.size);
1396                 string_hash = newhash;
1397     }
1398
1399     return (java_objectheader *) js;
1400 }
1401
1402
1403 /******************** Function: literalstring_new *****************************
1404
1405     creates a new javastring with the text of the utf-symbol
1406     and inserts it into the string hashtable
1407
1408 *******************************************************************************/
1409
1410 java_objectheader *literalstring_new(utf *u)
1411 {
1412     char *utf_ptr = u->text;         /* pointer to current unicode character in utf string */
1413     u4 utflength  = utf_strlen(u);   /* length of utf-string if uncompressed */
1414     java_chararray *a;               /* u2-array constructed from utf string */
1415     u4 i;
1416
1417     /* allocate memory */
1418     a = lit_mem_alloc(sizeof(java_chararray) + sizeof(u2) * (utflength - 1) + 10);
1419
1420     /* convert utf-string to u2-array */
1421     for (i = 0; i < utflength; i++)
1422                 a->data[i] = utf_nextu2(&utf_ptr);
1423
1424     return literalstring_u2(a, utflength, 0, false);
1425 }
1426
1427
1428 /********************** function: literalstring_free **************************
1429
1430         removes a javastring from memory
1431
1432 ******************************************************************************/
1433
1434 void literalstring_free(java_objectheader* sobj)
1435 {
1436         java_lang_String *s = (java_lang_String *) sobj;
1437         java_chararray *a = s->value;
1438
1439         /* dispose memory of java.lang.String object */
1440         LFREE(s, java_lang_String);
1441
1442         /* dispose memory of java-characterarray */
1443         LFREE(a, sizeof(java_chararray) + sizeof(u2) * (a->header.size - 1)); /* +10 ?? */
1444 }
1445
1446
1447 void copy_vftbl(vftbl **dest, vftbl *src)
1448 {
1449     *dest = src;
1450 #if 0
1451     /* XXX this kind of copying does not work (in the general
1452      * case). The interface tables would have to be copied, too. I
1453      * don't see why we should make a copy anyway. -Edwin
1454      */
1455         *dest = mem_alloc(sizeof(vftbl) + sizeof(methodptr)*(src->vftbllength-1));
1456         memcpy(*dest, src, sizeof(vftbl) - sizeof(methodptr));
1457         memcpy(&(*dest)->table, &src->table, src->vftbllength * sizeof(methodptr));
1458 #endif
1459 }
1460
1461
1462 /******************************************************************************************
1463
1464         creates method signature (excluding return type) from array of
1465         class-objects representing the parameters of the method
1466
1467 *******************************************************************************************/
1468
1469
1470 utf *create_methodsig(java_objectarray* types, char *retType)
1471 {
1472     char *buffer;       /* buffer for building the desciptor */
1473     char *pos;          /* current position in buffer */
1474     utf *result;        /* the method signature */
1475     u4 buffer_size = 3; /* minimal size=3: room for parenthesis and returntype */
1476     u4 i, j;
1477
1478     if (!types) return NULL;
1479
1480     /* determine required buffer-size */
1481     for (i = 0; i < types->header.size; i++) {
1482                 classinfo *c = (classinfo *) types->data[i];
1483                 buffer_size  = buffer_size + c->name->blength + 2;
1484     }
1485
1486     if (retType) buffer_size += strlen(retType);
1487
1488     /* allocate buffer */
1489     buffer = MNEW(u1, buffer_size);
1490     pos    = buffer;
1491
1492     /* method-desciptor starts with parenthesis */
1493     *pos++ = '(';
1494
1495     for (i = 0; i < types->header.size; i++) {
1496                 char ch;
1497
1498                 /* current argument */
1499             classinfo *c = (classinfo *) types->data[i];
1500
1501             /* current position in utf-text */
1502             char *utf_ptr = c->name->text;
1503
1504             /* determine type of argument */
1505             if ((ch = utf_nextu2(&utf_ptr)) == '[') {
1506                 /* arrayclass */
1507                 for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1508                                 *pos++ = *utf_ptr; /* copy text */
1509                         }
1510
1511             } else {
1512                         /* check for primitive types */
1513                         for (j = 0; j < PRIMITIVETYPE_COUNT; j++) {
1514                                 char *utf_pos   = utf_ptr - 1;
1515                                 char *primitive = primitivetype_table[j].wrapname;
1516
1517                                 /* compare text */
1518                                 while (utf_pos < utf_end(c->name)) {
1519                                         if (*utf_pos++ != *primitive++) goto nomatch;
1520                                 }
1521
1522                                 /* primitive type found */
1523                                 *pos++ = primitivetype_table[j].typesig;
1524                                 goto next_type;
1525
1526                         nomatch:
1527                                 ;
1528                         }
1529
1530                         /* no primitive type and no arrayclass, so must be object */
1531                         *pos++ = 'L';
1532
1533                         /* copy text */
1534                         for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1535                                 *pos++ = *utf_ptr;
1536                         }
1537
1538                         *pos++ = ';';
1539
1540                 next_type:
1541                         ;
1542                 }
1543     }
1544
1545     *pos++ = ')';
1546
1547     if (retType) {
1548                 for (i = 0; i < strlen(retType); i++) {
1549                         *pos++ = retType[i];
1550                 }
1551     }
1552
1553     /* create utf-string */
1554     result = utf_new(buffer, (pos - buffer));
1555     MFREE(buffer, u1, buffer_size);
1556
1557     return result;
1558 }
1559
1560
1561 /******************************************************************************************
1562
1563         retrieve the next argument or returntype from a descriptor
1564         and return the corresponding class
1565
1566 *******************************************************************************************/
1567
1568 classinfo *get_type(char **utf_ptr,char *desc_end, bool skip)
1569 {
1570     classinfo *c = class_from_descriptor(*utf_ptr,desc_end,utf_ptr,
1571                                          (skip) ? CLASSLOAD_SKIP : CLASSLOAD_LOAD);
1572     if (!c)
1573         /* unknown type */
1574         panic("illegal descriptor");
1575
1576     if (skip) return NULL;
1577
1578     use_class_as_object(c);
1579     return c;
1580 }
1581
1582
1583 /******************************************************************************************
1584
1585         use the descriptor of a method to generate a java/lang/Class array
1586         which contains the classes of the parametertypes of the method
1587
1588 *******************************************************************************************/
1589
1590 java_objectarray* get_parametertypes(methodinfo *m)
1591 {
1592     utf  *descr    =  m->descriptor;    /* method-descriptor */
1593     char *utf_ptr  =  descr->text;      /* current position in utf-text */
1594     char *desc_end =  utf_end(descr);   /* points behind utf string     */
1595     java_objectarray* result;
1596     int parametercount = 0;
1597     int i;
1598
1599     /* skip '(' */
1600     utf_nextu2(&utf_ptr);
1601
1602     /* determine number of parameters */
1603     while ( *utf_ptr != ')' ) {
1604         get_type(&utf_ptr,desc_end,true);
1605         parametercount++;
1606     }
1607
1608     /* create class-array */
1609     result = builtin_anewarray(parametercount, class_java_lang_Class);
1610
1611     utf_ptr  =  descr->text;
1612     utf_nextu2(&utf_ptr);
1613
1614     /* get returntype classes */
1615     for (i = 0; i < parametercount; i++)
1616             result->data[i] = (java_objectheader *) get_type(&utf_ptr,desc_end, false);
1617
1618     return result;
1619 }
1620
1621
1622
1623
1624
1625 /******************************************************************************************
1626
1627         get the exceptions which can be thrown by a method
1628
1629 *******************************************************************************************/
1630
1631 java_objectarray* get_exceptiontypes(methodinfo *m) {
1632     u2 exccount=m->thrownexceptionscount;
1633     u2 i;
1634     java_objectarray *result;
1635     /* create class-array */
1636     result = builtin_anewarray(exccount, class_java_lang_Class);
1637     for (i=0;i<exccount;i++) {
1638         java_objectheader *oh=(java_objectheader*)(m->thrownexceptions[i]);
1639         use_class_as_object(oh);
1640         result->data[i]=oh;
1641     }
1642     return result;
1643 }
1644
1645
1646
1647
1648
1649 /******************************************************************************************
1650
1651         get the returntype class of a method
1652
1653 *******************************************************************************************/
1654
1655 classinfo *get_returntype(methodinfo *m)
1656 {
1657         char *utf_ptr;   /* current position in utf-text */
1658         char *desc_end;  /* points behind utf string     */
1659         utf *desc = m->descriptor; /* method-descriptor  */
1660
1661         utf_ptr  = desc->text;
1662         desc_end = utf_end(desc);
1663
1664         /* ignore parametertypes */
1665         while ((utf_ptr<desc_end) && utf_nextu2(&utf_ptr)!=')')
1666                 /* skip */ ;
1667
1668         return get_type(&utf_ptr,desc_end, false);
1669 }
1670
1671
1672 /*****************************************************************************/
1673 /*****************************************************************************/
1674
1675
1676 /*--------------------------------------------------------*/
1677 void printNativeCall(nativeCall nc) {
1678   int i,j;
1679
1680   printf("\n%s's Native Methods call:\n",nc.classname); fflush(stdout);
1681   for (i=0; i<nc.methCnt; i++) {
1682       printf("\tMethod=%s %s\n",nc.methods[i].methodname, nc.methods[i].descriptor);fflush(stdout);
1683
1684     for (j=0; j<nc.callCnt[i]; j++) {
1685         printf("\t\t<%i,%i>aCalled = %s %s %s\n",i,j,
1686         nc.methods[i].methodCalls[j].classname,
1687         nc.methods[i].methodCalls[j].methodname,
1688         nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1689       }
1690     }
1691   printf("-+++++--------------------\n");fflush(stdout);
1692 }
1693
1694 /*--------------------------------------------------------*/
1695 void printCompNativeCall(nativeCompCall nc) {
1696   int i,j;
1697   printf("printCompNativeCall BEGIN\n");fflush(stdout);
1698   printf("\n%s's Native Comp Methods call:\n",nc.classname->text);fflush(stdout);
1699   utf_display(nc.classname); fflush(stdout);
1700
1701   for (i=0; i<nc.methCnt; i++) {
1702     printf("\tMethod=%s %s\n",nc.methods[i].methodname->text,nc.methods[i].descriptor->text);fflush(stdout);
1703     utf_display(nc.methods[i].methodname); fflush(stdout);
1704     utf_display(nc.methods[i].descriptor);fflush(stdout);
1705     printf("\n");fflush(stdout);
1706
1707     for (j=0; j<nc.callCnt[i]; j++) {
1708       printf("\t\t<%i,%i>bCalled = ",i,j);fflush(stdout);
1709         utf_display(nc.methods[i].methodCalls[j].classname);fflush(stdout);
1710         utf_display(nc.methods[i].methodCalls[j].methodname); fflush(stdout);
1711         utf_display(nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1712         printf("\n");fflush(stdout);
1713       }
1714     }
1715 printf("---------------------\n");fflush(stdout);
1716 }
1717
1718
1719 /*--------------------------------------------------------*/
1720 classMeth findNativeMethodCalls(utf *c, utf *m, utf *d )
1721 {
1722     int i = 0;
1723     int j = 0;
1724     int cnt = 0;
1725     classMeth mc;
1726     mc.i_class = i;
1727     mc.j_method = j;
1728     mc.methCnt = cnt;
1729
1730     return mc;
1731 }
1732
1733 /*--------------------------------------------------------*/
1734 nativeCall* findNativeClassCalls(char *aclassname ) {
1735 int i;
1736
1737 for (i=0;i<NATIVECALLSSIZE; i++) {
1738    /* convert table to utf later to speed up search */
1739    if (strcmp(nativeCalls[i].classname, aclassname) == 0)
1740         return &nativeCalls[i];
1741    }
1742
1743 return NULL;
1744 }
1745 /*--------------------------------------------------------*/
1746 /*--------------------------------------------------------*/
1747 void utfNativeCall(nativeCall nc, nativeCompCall *ncc) {
1748   int i,j;
1749
1750
1751   ncc->classname = utf_new_char(nc.classname);
1752   ncc->methCnt = nc.methCnt;
1753
1754   for (i=0; i<nc.methCnt; i++) {
1755     ncc->methods[i].methodname = utf_new_char(nc.methods[i].methodname);
1756     ncc->methods[i].descriptor = utf_new_char(nc.methods[i].descriptor);
1757     ncc->callCnt[i] = nc.callCnt[i];
1758
1759     for (j=0; j<nc.callCnt[i]; j++) {
1760
1761         ncc->methods[i].methodCalls[j].classname  = utf_new_char(nc.methods[i].methodCalls[j].classname);
1762
1763         if (strcmp("", nc.methods[i].methodCalls[j].methodname) != 0) {
1764           ncc->methods[i].methodCalls[j].methodname = utf_new_char(nc.methods[i].methodCalls[j].methodname);
1765           ncc->methods[i].methodCalls[j].descriptor = utf_new_char(nc.methods[i].methodCalls[j].descriptor);
1766           }
1767         else {
1768           ncc->methods[i].methodCalls[j].methodname = NULL;
1769           ncc->methods[i].methodCalls[j].descriptor = NULL;
1770           }
1771       }
1772     }
1773 }
1774
1775
1776
1777 /*--------------------------------------------------------*/
1778
1779 bool natcall2utf(bool natcallcompdone) {
1780 int i;
1781
1782 if (natcallcompdone)
1783         return true;
1784
1785 for (i=0;i<NATIVECALLSSIZE; i++) {
1786    utfNativeCall  (nativeCalls[i], &nativeCompCalls[i]);
1787    }
1788
1789 return true;
1790 }
1791
1792 /*--------------------------------------------------------*/
1793
1794
1795 java_objectarray *builtin_asm_createclasscontextarray(classinfo **end,classinfo **start)
1796 {
1797 #if defined(__GNUC__)
1798 #warning platform dependend
1799 #endif
1800         java_objectarray *tmpArray;
1801         int i;
1802         classinfo **current;
1803         classinfo *c;
1804         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1805         /*printf("end %p, start %p, size %ld\n",end,start,size);*/
1806         if (!class_java_lang_Class)
1807                 class_java_lang_Class = class_new(utf_new_char ("java/lang/Class"));
1808         if (!class_java_lang_SecurityManager)
1809                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1810         if (size>0) {
1811                 if (start==class_java_lang_SecurityManager) {
1812                         size--;
1813                         start--;
1814                 }
1815         }
1816         tmpArray=builtin_newarray(size, class_array_of(class_java_lang_Class)->vftbl);
1817
1818         for(i=0,current=start;i<size;i++,current--) {
1819                 c=*current;
1820 /*              printf("%d\n",i);
1821                 utf_display(c->name);*/
1822                 use_class_as_object(c);
1823                 tmpArray->data[i]=c;
1824         }
1825         return tmpArray;
1826
1827 }
1828
1829 java_lang_ClassLoader *builtin_asm_getclassloader(classinfo **end,classinfo **start)
1830 {
1831 #if defined(__GNUC__)
1832 #warning platform dependend
1833 #endif
1834         int i;
1835         classinfo **current;
1836         classinfo *c;
1837         classinfo *privilegedAction;
1838         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1839 /*      log_text("builtin_asm_getclassloader");
1840         printf("end %p, start %p, size %ld\n",end,start,size);*/
1841
1842         if (!class_java_lang_SecurityManager)
1843                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1844         if (size>0) {
1845                 if (start==class_java_lang_SecurityManager) {
1846                         size--;
1847                         start--;
1848                 }
1849         }
1850
1851         privilegedAction=class_new(utf_new_char("java/security/PrivilegedAction"));
1852
1853         for(i=0,current=start;i<size;i++,current--) {
1854                 c=*current;
1855                 if (c==privilegedAction) return NULL;
1856                 if (c->classloader) return c->classloader;
1857         }
1858         return NULL;
1859
1860
1861
1862
1863 /*
1864         log_text("Java_java_lang_VMSecurityManager_currentClassLoader");
1865         init_systemclassloader();
1866
1867         return SystemClassLoader;*/
1868 }
1869
1870 /*
1871  * These are local overrides for various environment variables in Emacs.
1872  * Please do not remove this and leave it at the end of the file, where
1873  * Emacs will automagically detect them.
1874  * ---------------------------------------------------------------------
1875  * Local variables:
1876  * mode: c
1877  * indent-tabs-mode: t
1878  * c-basic-offset: 4
1879  * tab-width: 4
1880  * End:
1881  */