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 1238 2004-06-30 20:05:30Z 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 "options.h"
  51 #include "jni.h"
  52 #include "native.h"
  53 #include "builtin.h"
  54 #include "asmpart.h"
  55 #include "tables.h"
  56 #include "loader.h"
  57 #include "jni.h"
  58 #include "jit/jit.h"
  59 #include "toolbox/logging.h"
  60 #include "toolbox/memory.h"
  61 #include "threads/thread.h"
  62 #include "threads/threadio.h"
  63 #include "threads/locks.h"
  64 #include "nat/java_lang_VMClass.h"
  65 #include "nat/java_lang_Throwable.h"
  66
  67 /* Include files for IO functions */
  68
  69 #include <fcntl.h>
  70 #include <dirent.h>
  71 #include <sys/types.h>
  72 #ifdef _OSF_SOURCE
  73 #include <sys/mode.h>
  74 #endif
  75 #include <sys/stat.h>
  76
  77 #include "threads/threadio.h"
  78
  79 /* include table of native functions */
  80
  81 #include "nativetable.inc"
  82
  83
  84 /* searchpath for classfiles */
  85 char *classpath;
  86
  87 /* for java-string to char conversion */
  88 #define MAXSTRINGSIZE 1000
  89
  90
  91 /******************** systemclasses required for native methods ***************/
  92
  93 classinfo *class_java_lang_Class;
  94 classinfo *class_java_lang_VMClass;
  95 classinfo *class_java_lang_System;
  96 classinfo *class_java_lang_ClassLoader;
  97 classinfo *class_gnu_java_lang_SystemClassLoader;
  98 classinfo *class_java_lang_SecurityManager;
  99 classinfo *class_java_lang_Double;
 100 classinfo *class_java_lang_Float;
 101 classinfo *class_java_lang_Long;
 102 classinfo *class_java_lang_Byte;
 103 classinfo *class_java_lang_Short;
 104 classinfo *class_java_lang_Boolean;
 105 classinfo *class_java_lang_Void;
 106 classinfo *class_java_lang_Character;
 107 classinfo *class_java_lang_Integer;
 108
 109 methodinfo *method_vmclass_init;
 110
 111
 112 /* system exception classes required in cacao */
 113
 114 classinfo *class_java_lang_Throwable;
 115 classinfo *class_java_lang_Exception;
 116 classinfo *class_java_lang_Error;
 117
 118
 119 /* exception/error super class */
 120
 121 char *string_java_lang_Throwable =
 122     "java/lang/Throwable";
 123
 124 char *string_java_lang_VMThrowable =
 125     "java/lang/VMThrowable";
 126
 127
 128 /* specify some exception strings for code generation */
 129
 130 char *string_java_lang_ArithmeticException =
 131     "java/lang/ArithmeticException";
 132
 133 char *string_java_lang_ArithmeticException_message =
 134     "/ by zero";
 135
 136 char *string_java_lang_ArrayIndexOutOfBoundsException =
 137     "java/lang/ArrayIndexOutOfBoundsException";
 138
 139 char *string_java_lang_ArrayStoreException =
 140     "java/lang/ArrayStoreException";
 141
 142 char *string_java_lang_ClassCastException =
 143     "java/lang/ClassCastException";
 144
 145 char *string_java_lang_ClassNotFoundException =
 146         "java/lang/ClassNotFoundException";
 147
 148 char *string_java_lang_CloneNotSupportedException =
 149     "java/lang/CloneNotSupportedException";
 150
 151 char *string_java_lang_Exception =
 152     "java/lang/Exception";
 153
 154 char *string_java_lang_IllegalArgumentException =
 155     "java/lang/IllegalArgumentException";
 156
 157 char *string_java_lang_IllegalMonitorStateException =
 158     "java/lang/IllegalMonitorStateException";
 159
 160 char *string_java_lang_NegativeArraySizeException =
 161     "java/lang/NegativeArraySizeException";
 162
 163 char *string_java_lang_NoSuchFieldException =
 164         "java/lang/NoSuchFieldException";
 165
 166 char *string_java_lang_NoSuchMethodException =
 167         "java/lang/NoSuchMethodException";
 168
 169 char *string_java_lang_NullPointerException =
 170     "java/lang/NullPointerException";
 171
 172
 173 /* specify some error strings for code generation */
 174
 175 char *string_java_lang_AbstractMethodError =
 176     "java/lang/AbstractMethodError";
 177
 178 char *string_java_lang_ClassCircularityError =
 179     "java/lang/ClassCircularityError";
 180
 181 char *string_java_lang_ClassFormatError =
 182     "java/lang/ClassFormatError";
 183
 184 char *string_java_lang_Error =
 185     "java/lang/Error";
 186
 187 char *string_java_lang_ExceptionInInitializerError =
 188     "java/lang/ExceptionInInitializerError";
 189
 190 char *string_java_lang_IncompatibleClassChangeError =
 191     "java/lang/IncompatibleClassChangeError";
 192
 193 char *string_java_lang_InternalError =
 194     "java/lang/InternalError";
 195
 196 char *string_java_lang_LinkageError =
 197     "java/lang/LinkageError";
 198
 199 char *string_java_lang_NoClassDefFoundError =
 200     "java/lang/NoClassDefFoundError";
 201
 202 char *string_java_lang_NoSuchFieldError =
 203         "java/lang/NoSuchFieldError";
 204
 205 char *string_java_lang_NoSuchMethodError =
 206         "java/lang/NoSuchMethodError";
 207
 208 char *string_java_lang_OutOfMemoryError =
 209     "java/lang/OutOfMemoryError";
 210
 211 char *string_java_lang_VerifyError =
 212     "java/lang/VerifyError";
 213
 214 char *string_java_lang_VirtualMachineError =
 215     "java/lang/VirtualMachineError";
 216
 217
 218 /* the system classloader object */
 219 struct java_lang_ClassLoader *SystemClassLoader = NULL;
 220
 221 /* for raising exceptions from native methods */
 222 #if !defined(USE_THREADS) || !defined(NATIVE_THREADS)
 223 java_objectheader* _exceptionptr = NULL;
 224 #endif
 225
 226 /************* use classinfo structure as java.lang.Class object **************/
 227
 228 void use_class_as_object(classinfo *c)
 229 {
 230         if (!c->classvftbl) {
 231                 c->classvftbl = true;
 232
 233                 c->header.vftbl = class_java_lang_Class->vftbl;
 234         }
 235
 236 }
 237
 238
 239 /*************************** include native methods ***************************/
 240
 241 #ifdef USE_GTK
 242 #include "nat/GdkGraphics.c"
 243 #include "nat/GtkComponentPeer.c"
 244 #include "nat/GdkPixbufDecoder.c"
 245 #include "nat/GtkScrollPanePeer.c"
 246 #include "nat/GtkFileDialogPeer.c"
 247 #include "nat/GtkLabelPeer.c"
 248 #endif
 249
 250
 251 /************************** tables for methods ********************************/
 252
 253 #undef JOWENN_DEBUG
 254 #undef JOWENN_DEBUG1
 255
 256 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
 257
 258 /* table for fast string comparison */
 259 static nativecompref nativecomptable[NATIVETABLESIZE];
 260
 261 /* string comparsion table initialized */
 262 static bool nativecompdone = false;
 263
 264
 265 /******************************************************************************/
 266 /******************************************************************************/
 267 #include "natcalls.h"
 268
 269 /* string call comparison table initialized */
 270
 271 /******************************************************************************/
 272 /******************************************************************************/
 273
 274 /* init_system_exceptions *****************************************************
 275
 276    load, link and compile exceptions used in the system
 277
 278 *******************************************************************************/
 279
 280 void init_system_exceptions()
 281 {
 282         /* java/lang/Throwable */
 283
 284         class_java_lang_Throwable =
 285                 class_new(utf_new_char(string_java_lang_Throwable));
 286         class_load(class_java_lang_Throwable);
 287         class_link(class_java_lang_Throwable);
 288
 289         /* java/lang/Exception */
 290
 291         class_java_lang_Exception =
 292                 class_new(utf_new_char(string_java_lang_Exception));
 293         class_load(class_java_lang_Exception);
 294         class_link(class_java_lang_Exception);
 295
 296         /* java/lang/Error */
 297
 298         class_java_lang_Error =
 299                 class_new(utf_new_char(string_java_lang_Error));
 300         class_load(class_java_lang_Error);
 301         class_link(class_java_lang_Error);
 302 }
 303
 304
 305 void compile_all_class_methods(classinfo *c)
 306 {
 307         s4 i;
 308
 309         for (i = 0; i < c->methodscount; i++) {
 310                 (void) jit_compile(&(c->methods[i]));
 311         }
 312 }
 313
 314
 315 static void throw_exception_exit_intern(bool doexit)
 316 {
 317         java_objectheader *xptr;
 318         classinfo *c;
 319         methodinfo *pss;
 320
 321         if (*exceptionptr) {
 322                 xptr = *exceptionptr;
 323
 324                 /* clear exception, because we are calling jit code again */
 325                 *exceptionptr = NULL;
 326
 327                 c = xptr->vftbl->class;
 328
 329                 pss = class_resolveclassmethod(c,
 330                                                                            utf_new_char("printStackTrace"),
 331                                                                            utf_new_char("()V"),
 332                                                                            class_java_lang_Object,
 333                                                                            false);
 334
 335                 /* print the stacktrace */
 336                 if (pss) {
 337                         asm_calljavafunction(pss, xptr, NULL, NULL, NULL);
 338
 339                         /* this normally means, we are EXTREMLY out of memory, but may be
 340                            any other exception */
 341                         if (*exceptionptr) {
 342                                 utf_fprint_classname(stderr, c->name);
 343                                 fprintf(stderr, "\n");
 344                         }
 345
 346                 } else {
 347                         utf_fprint_classname(stderr, c->name);
 348                         fprintf(stderr, ": printStackTrace()V not found!\n");
 349                 }
 350
 351                 fflush(stderr);
 352
 353                 /* good bye! */
 354                 if (doexit) {
 355                         exit(1);
 356                 }
 357         }
 358 }
 359
 360
 361 void throw_exception()
 362 {
 363         throw_exception_exit_intern(false);
 364 }
 365
 366
 367 void throw_exception_exit()
 368 {
 369         throw_exception_exit_intern(true);
 370 }
 371
 372
 373 void throw_main_exception()
 374 {
 375         fprintf(stderr, "Exception in thread \"main\" ");
 376         fflush(stderr);
 377
 378         throw_exception_exit_intern(false);
 379 }
 380
 381
 382 void throw_main_exception_exit()
 383 {
 384         fprintf(stderr, "Exception in thread \"main\" ");
 385         fflush(stderr);
 386
 387         throw_exception_exit_intern(true);
 388 }
 389
 390
 391 void throw_cacao_exception_exit(char *exception, char *message)
 392 {
 393         s4 i;
 394         char *tmp;
 395         s4 len;
 396
 397         len = strlen(exception);
 398         tmp = MNEW(char, len);
 399         strncpy(tmp, exception, len);
 400
 401         /* convert to classname */
 402
 403         for (i = len - 1; i >= 0; i--) {
 404                 if (tmp[i] == '/') tmp[i] = '.';
 405         }
 406
 407         fprintf(stderr, "Exception in thread \"main\" %s", tmp);
 408
 409         MFREE(tmp, char, len);
 410
 411         if (strlen(message) > 0)
 412                 fprintf(stderr, ": %s", message);
 413
 414         fprintf(stderr, "\n");
 415         fflush(stderr);
 416
 417         /* good bye! */
 418         exit(1);
 419 }
 420
 421
 422 #define CREATENEW_EXCEPTION(ex) \
 423         java_objectheader *newEx; \
 424         java_objectheader *oldexception=*exceptionptr;\
 425         *exceptionptr=0;\
 426         newEx=ex;\
 427         *exceptionptr=oldexception;\
 428         return newEx;
 429
 430 java_objectheader *new_exception(char *classname)
 431 {
 432         classinfo *c = class_new(utf_new_char(classname));
 433
 434         CREATENEW_EXCEPTION(native_new_and_init(c));
 435 }
 436
 437 java_objectheader *new_exception_message(char *classname, char *message)
 438 {
 439         classinfo *c = class_new(utf_new_char(classname));
 440
 441         CREATENEW_EXCEPTION(native_new_and_init_string(c, javastring_new_char(message)));
 442 }
 443
 444
 445 java_objectheader *new_exception_throwable(char *classname, java_lang_Throwable *throwable)
 446 {
 447         classinfo *c = class_new(utf_new_char(classname));
 448
 449         CREATENEW_EXCEPTION(native_new_and_init_throwable(c, throwable));
 450 }
 451
 452
 453 java_objectheader *new_exception_utfmessage(char *classname, utf *message)
 454 {
 455         classinfo *c = class_new(utf_new_char(classname));
 456
 457         CREATENEW_EXCEPTION(native_new_and_init_string(c, javastring_new(message)));
 458 }
 459
 460
 461 java_objectheader *new_exception_javastring(char *classname, java_lang_String *message)
 462 {
 463         classinfo *c = class_new(utf_new_char(classname));
 464
 465         CREATENEW_EXCEPTION(native_new_and_init_string(c, message));
 466 }
 467
 468
 469 java_objectheader *new_exception_int(char *classname, s4 i)
 470 {
 471         classinfo *c = class_new(utf_new_char(classname));
 472
 473         CREATENEW_EXCEPTION(native_new_and_init_int(c, i));
 474 }
 475
 476
 477 /*********************** function: native_loadclasses **************************
 478
 479         load classes required for native methods
 480
 481 *******************************************************************************/
 482
 483 void native_loadclasses()
 484 {
 485         static int classesLoaded = 0; /*temporary hack JoWenn*/
 486
 487         if (classesLoaded)
 488                 return;
 489
 490         classesLoaded = 1;
 491
 492         class_java_lang_Cloneable =
 493                 class_new(utf_new_char("java/lang/Cloneable"));
 494         class_load(class_java_lang_Cloneable);
 495         class_link(class_java_lang_Cloneable);
 496
 497         class_java_lang_Class =
 498                 class_new(utf_new_char("java/lang/Class"));
 499         class_load(class_java_lang_Class);
 500         class_link(class_java_lang_Class);
 501
 502         class_java_lang_VMClass =
 503                 class_new(utf_new_char("java/lang/VMClass"));
 504         class_load(class_java_lang_VMClass);
 505         class_link(class_java_lang_VMClass);
 506
 507         class_java_lang_ClassLoader =
 508                 class_new(utf_new_char("java/lang/ClassLoader"));
 509         class_load(class_java_lang_ClassLoader);
 510         class_link(class_java_lang_ClassLoader);
 511
 512         /* load classes for wrapping primitive types */
 513         class_java_lang_Double = class_new(utf_new_char("java/lang/Double"));
 514         class_load(class_java_lang_Double);
 515         class_link(class_java_lang_Double);
 516
 517         class_java_lang_Float = class_new(utf_new_char("java/lang/Float"));
 518         class_load(class_java_lang_Float);
 519         class_link(class_java_lang_Float);
 520
 521         class_java_lang_Character =     class_new(utf_new_char("java/lang/Character"));
 522         class_load(class_java_lang_Character);
 523         class_link(class_java_lang_Character);
 524
 525         class_java_lang_Integer = class_new(utf_new_char("java/lang/Integer"));
 526         class_load(class_java_lang_Integer);
 527         class_link(class_java_lang_Integer);
 528
 529         class_java_lang_Long = class_new(utf_new_char("java/lang/Long"));
 530         class_load(class_java_lang_Long);
 531         class_link(class_java_lang_Long);
 532
 533         class_java_lang_Byte = class_new(utf_new_char("java/lang/Byte"));
 534         class_load(class_java_lang_Byte);
 535         class_link(class_java_lang_Byte);
 536
 537         class_java_lang_Short = class_new(utf_new_char("java/lang/Short"));
 538         class_load(class_java_lang_Short);
 539         class_link(class_java_lang_Short);
 540
 541         class_java_lang_Boolean = class_new(utf_new_char("java/lang/Boolean"));
 542         class_load(class_java_lang_Boolean);
 543         class_link(class_java_lang_Boolean);
 544
 545         class_java_lang_Void = class_new(utf_new_char("java/lang/Void"));
 546         class_load(class_java_lang_Void);
 547         class_link(class_java_lang_Void);
 548
 549 }
 550
 551
 552 /*****************************************************************************
 553
 554         create systemclassloader object and initialize instance fields
 555
 556 ******************************************************************************/
 557
 558 void init_systemclassloader()
 559 {
 560         log_text("init_systemclassloader");
 561         if (!SystemClassLoader) {
 562                 native_loadclasses();
 563                 log_text("Initializing new system class loader");
 564                 /* create object and call initializer */
 565                 SystemClassLoader = (java_lang_ClassLoader *) native_new_and_init(class_new(utf_new_char("gnu/java/lang/SystemClassLoader")));
 566
 567                 /* systemclassloader has no parent */
 568                 SystemClassLoader->parent      = NULL;
 569                 SystemClassLoader->initialized = true;
 570         }
 571         log_text("leaving system class loader");
 572 }
 573
 574
 575 /********************* function: native_setclasspath **************************/
 576
 577 void native_setclasspath(char *path)
 578 {
 579         /* set searchpath for classfiles */
 580         classpath = path;
 581 }
 582
 583
 584 /*********************** Function: native_findfunction *************************
 585
 586         Looks up a method (must have the same class name, method name, descriptor
 587         and 'static'ness) and returns a function pointer to it.
 588         Returns: function pointer or NULL (if there is no such method)
 589
 590         Remark: For faster operation, the names/descriptors are converted from C
 591                 strings to Unicode the first time this function is called.
 592
 593 *******************************************************************************/
 594
 595 functionptr native_findfunction(utf *cname, utf *mname,
 596                                                                 utf *desc, bool isstatic)
 597 {
 598         int i;
 599         /* entry of table for fast string comparison */
 600         struct nativecompref *n;
 601         /* for warning message if no function is found */
 602         char *buffer;
 603         int buffer_len;
 604
 605         isstatic = isstatic ? true : false;
 606
 607         if (!nativecompdone) {
 608                 for (i = 0; i < NATIVETABLESIZE; i++) {
 609                         nativecomptable[i].classname  =
 610                                 utf_new_char(nativetable[i].classname);
 611                         nativecomptable[i].methodname =
 612                                 utf_new_char(nativetable[i].methodname);
 613                         nativecomptable[i].descriptor =
 614                                 utf_new_char(nativetable[i].descriptor);
 615                         nativecomptable[i].isstatic   =
 616                                 nativetable[i].isstatic;
 617                         nativecomptable[i].func       =
 618                                 nativetable[i].func;
 619                 }
 620                 nativecompdone = true;
 621         }
 622
 623 #ifdef JOWENN_DEBUG
 624         buffer_len =
 625                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 626
 627         buffer = MNEW(char, buffer_len);
 628
 629         strcpy(buffer, "searching matching function in native table:");
 630         utf_sprint(buffer+strlen(buffer), mname);
 631         strcpy(buffer+strlen(buffer), ": ");
 632         utf_sprint(buffer+strlen(buffer), desc);
 633         strcpy(buffer+strlen(buffer), " for class ");
 634         utf_sprint(buffer+strlen(buffer), cname);
 635
 636         log_text(buffer);
 637
 638         MFREE(buffer, char, buffer_len);
 639 #endif
 640
 641         for (i = 0; i < NATIVETABLESIZE; i++) {
 642                 n = &(nativecomptable[i]);
 643
 644                 if (cname == n->classname && mname == n->methodname &&
 645                     desc == n->descriptor && isstatic == n->isstatic)
 646                         return n->func;
 647 #ifdef JOWENN_DEBUG
 648                         else {
 649                                 if (cname == n->classname && mname == n->methodname )  log_text("static and descriptor mismatch");
 650
 651                                 else {
 652                                         buffer_len =
 653                                           utf_strlen(n->classname) + utf_strlen(n->methodname) + utf_strlen(n->descriptor) + 64;
 654
 655                                         buffer = MNEW(char, buffer_len);
 656
 657                                         strcpy(buffer, "comparing with:");
 658                                         utf_sprint(buffer+strlen(buffer), n->methodname);
 659                                         strcpy (buffer+strlen(buffer), ": ");
 660                                         utf_sprint(buffer+strlen(buffer), n->descriptor);
 661                                         strcpy(buffer+strlen(buffer), " for class ");
 662                                         utf_sprint(buffer+strlen(buffer), n->classname);
 663
 664                                         log_text(buffer);
 665
 666                                         MFREE(buffer, char, buffer_len);
 667                                 }
 668                         }
 669 #endif
 670         }
 671
 672
 673         /* no function was found, display warning */
 674
 675         buffer_len =
 676                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 677
 678         buffer = MNEW(char, buffer_len);
 679
 680         strcpy(buffer, "warning: native function ");
 681         utf_sprint(buffer + strlen(buffer), mname);
 682         strcpy(buffer + strlen(buffer), ": ");
 683         utf_sprint(buffer + strlen(buffer), desc);
 684         strcpy(buffer + strlen(buffer), " not found in class ");
 685         utf_sprint(buffer + strlen(buffer), cname);
 686
 687         log_text(buffer);
 688
 689         MFREE(buffer, char, buffer_len);
 690
 691 /*      exit(1); */
 692
 693         /* keep compiler happy */
 694         return NULL;
 695 }
 696
 697
 698 /********************** function: javastring_new *******************************
 699
 700         creates a new object of type java/lang/String with the text of
 701         the specified utf8-string
 702
 703         return: pointer to the string or NULL if memory is exhausted.
 704
 705 *******************************************************************************/
 706
 707 java_lang_String *javastring_new(utf *u)
 708 {
 709         char *utf_ptr = u->text;        /* current utf character in utf string    */
 710         int utflength = utf_strlen(u);  /* length of utf-string if uncompressed   */
 711         java_lang_String *s;                /* result-string                          */
 712         java_chararray *a;
 713         s4 i;
 714
 715         s = (java_lang_String *) builtin_new(class_java_lang_String);
 716         a = builtin_newarray_char(utflength);
 717
 718         /* javastring or character-array could not be created */
 719         if (!a || !s)
 720                 return NULL;
 721
 722         /* decompress utf-string */
 723         for (i = 0; i < utflength; i++)
 724                 a->data[i] = utf_nextu2(&utf_ptr);
 725
 726         /* set fields of the javastring-object */
 727         s->value  = a;
 728         s->offset = 0;
 729         s->count  = utflength;
 730
 731         return s;
 732 }
 733
 734
 735 /********************** function: javastring_new_char **************************
 736
 737         creates a new java/lang/String object which contains the convertet
 738         C-string passed via text.
 739
 740         return: the object pointer or NULL if memory is exhausted.
 741
 742 *******************************************************************************/
 743
 744 java_lang_String *javastring_new_char(char *text)
 745 {
 746         s4 i;
 747         s4 len = strlen(text); /* length of the string */
 748         java_lang_String *s;   /* result-string */
 749         java_chararray *a;
 750
 751         s = (java_lang_String *) builtin_new(class_java_lang_String);
 752         a = builtin_newarray_char(len);
 753
 754         /* javastring or character-array could not be created */
 755         if (!a || !s)
 756                 return NULL;
 757
 758         /* copy text */
 759         for (i = 0; i < len; i++)
 760                 a->data[i] = text[i];
 761
 762         /* set fields of the javastring-object */
 763         s->value  = a;
 764         s->offset = 0;
 765         s->count  = len;
 766
 767         return s;
 768 }
 769
 770
 771 /************************* function javastring_tochar **************************
 772
 773         converts a Java string into a C string.
 774
 775         return: pointer to C string
 776
 777         Caution: every call of this function overwrites the previous string !!!
 778
 779 *******************************************************************************/
 780
 781 static char stringbuffer[MAXSTRINGSIZE];
 782
 783 char *javastring_tochar(java_objectheader *so)
 784 {
 785         java_lang_String *s = (java_lang_String *) so;
 786         java_chararray *a;
 787         s4 i;
 788
 789         if (!s)
 790                 return "";
 791
 792         a = s->value;
 793
 794         if (!a)
 795                 return "";
 796
 797         if (s->count > MAXSTRINGSIZE)
 798                 return "";
 799
 800         for (i = 0; i < s->count; i++)
 801                 stringbuffer[i] = a->data[s->offset + i];
 802
 803         stringbuffer[i] = '\0';
 804
 805         return stringbuffer;
 806 }
 807
 808
 809 /****************** function class_findfield_approx ****************************
 810
 811         searches in 'classinfo'-structure for a field with the
 812         specified name
 813
 814 *******************************************************************************/
 815
 816 fieldinfo *class_findfield_approx(classinfo *c, utf *name)
 817 {
 818         s4 i;
 819
 820         for (i = 0; i < c->fieldscount; i++) {
 821                 /* compare field names */
 822                 if ((c->fields[i].name == name))
 823                         return &(c->fields[i]);
 824         }
 825
 826         /* field was not found, raise exception */
 827         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 828
 829         return NULL;
 830 }
 831
 832
 833 s4 class_findfield_index_approx(classinfo *c, utf *name)
 834 {
 835         s4 i;
 836
 837         for (i = 0; i < c->fieldscount; i++) {
 838                 /* compare field names */
 839                 if ((c->fields[i].name == name))
 840                         return i;
 841         }
 842
 843         /* field was not found, raise exception */
 844         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 845
 846         return -1;
 847 }
 848
 849
 850 /********************** function: native_new_and_init *************************
 851
 852         Creates a new object on the heap and calls the initializer.
 853         Returns the object pointer or NULL if memory is exhausted.
 854
 855 *******************************************************************************/
 856
 857 java_objectheader *native_new_and_init(classinfo *c)
 858 {
 859         methodinfo *m;
 860         java_objectheader *o;
 861
 862         if (!c)
 863                 return *exceptionptr;
 864
 865         o = builtin_new(c);                 /* create object                      */
 866
 867         if (!o)
 868                 return NULL;
 869
 870         /* find initializer */
 871
 872         m = class_findmethod(c,
 873                                                  utf_new_char("<init>"),
 874                                                  utf_new_char("()V"));
 875
 876         if (!m) {                           /* initializer not found              */
 877                 if (verbose) {
 878                         char logtext[MAXLOGTEXT];
 879                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 880                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 881                         log_text(logtext);
 882                 }
 883                 return o;
 884         }
 885
 886         /* call initializer */
 887
 888         asm_calljavafunction(m, o, NULL, NULL, NULL);
 889
 890         return o;
 891 }
 892
 893
 894 java_objectheader *native_new_and_init_string(classinfo *c, java_lang_String *s)
 895 {
 896         methodinfo *m;
 897         java_objectheader *o;
 898
 899         if (!c)
 900                 return *exceptionptr;
 901
 902         o = builtin_new(c);          /* create object          */
 903
 904         if (!o)
 905                 return NULL;
 906
 907         /* find initializer */
 908
 909         m = class_findmethod(c,
 910                                                  utf_new_char("<init>"),
 911                                                  utf_new_char("(Ljava/lang/String;)V"));
 912
 913         if (!m) {                                       /* initializer not found  */
 914                 if (verbose) {
 915                         char logtext[MAXLOGTEXT];
 916                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 917                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 918                         log_text(logtext);
 919                 }
 920                 return o;
 921         }
 922
 923         /* call initializer */
 924
 925         asm_calljavafunction(m, o, s, NULL, NULL);
 926
 927         return o;
 928 }
 929
 930
 931 java_objectheader *native_new_and_init_int(classinfo *c, s4 i)
 932 {
 933         methodinfo *m;
 934         java_objectheader *o;
 935
 936         if (!c)
 937                 return *exceptionptr;
 938
 939         o = builtin_new(c);          /* create object          */
 940
 941         if (!o) return NULL;
 942
 943         /* find initializer */
 944
 945         m = class_findmethod(c,
 946                                                  utf_new_char("<init>"),
 947                                                  utf_new_char("(I)V"));
 948
 949         if (!m) {                                       /* initializer not found  */
 950                 if (verbose) {
 951                         char logtext[MAXLOGTEXT];
 952                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 953                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 954                         log_text(logtext);
 955                 }
 956                 return o;
 957         }
 958
 959         /* call initializer */
 960
 961 #if defined(__I386__) || defined(__POWERPC__)
 962         asm_calljavafunction(m, o, (void *) i, NULL, NULL);
 963 #else
 964         asm_calljavafunction(m, o, (void *) (s8) i, NULL, NULL);
 965 #endif
 966
 967         return o;
 968 }
 969
 970
 971 java_objectheader *native_new_and_init_throwable(classinfo *c, java_lang_Throwable *t)
 972 {
 973         methodinfo *m;
 974         java_objectheader *o;
 975
 976         if (!c)
 977                 return *exceptionptr;
 978
 979         o = builtin_new(c);          /* create object          */
 980
 981         if (!o) return NULL;
 982
 983         /* find initializer */
 984
 985         m = class_findmethod(c,
 986                                                  utf_new_char("<init>"),
 987                                                  utf_new_char("(Ljava/lang/Throwable;)V"));
 988
 989         if (!m) {                                       /* initializer not found  */
 990                 if (verbose) {
 991                         char logtext[MAXLOGTEXT];
 992                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 993                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 994                         log_text(logtext);
 995                 }
 996                 return o;
 997         }
 998
 999         /* call initializer */
1000
1001         asm_calljavafunction(m, o, t, NULL, NULL);
1002
1003         return o;
1004 }
1005
1006
1007 /******************** function: stringtable_update ****************************
1008
1009         traverses the javastring hashtable and sets the vftbl-entries of
1010         javastrings which were temporarily set to NULL, because
1011         java.lang.Object was not yet loaded
1012
1013 *******************************************************************************/
1014
1015 void stringtable_update ()
1016 {
1017         java_lang_String *js;
1018         java_chararray *a;
1019         literalstring *s;       /* hashtable entry */
1020         int i;
1021
1022         for (i = 0; i < string_hash.size; i++) {
1023                 s = string_hash.ptr[i];
1024                 if (s) {
1025                         while (s) {
1026
1027                                 js = (java_lang_String *) s->string;
1028
1029                                 if (!js || !js->value)
1030                                         /* error in hashtable found */
1031                                         panic("invalid literalstring in hashtable");
1032
1033                                 a = js->value;
1034
1035                                 if (!js->header.vftbl)
1036                                         /* vftbl of javastring is NULL */
1037                                         js->header.vftbl = class_java_lang_String->vftbl;
1038
1039                                 if (!a->header.objheader.vftbl)
1040                                         /* vftbl of character-array is NULL */
1041                                         a->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1042
1043                                 /* follow link in external hash chain */
1044                                 s = s->hashlink;
1045                         }
1046                 }
1047         }
1048 }
1049
1050
1051 /************************* function: u2_utflength ***************************
1052
1053         returns the utf length in bytes of a u2 array
1054
1055 *****************************************************************************/
1056
1057 u4 u2_utflength(u2 *text, u4 u2_length)
1058 {
1059         u4 result_len =  0;  /* utf length in bytes  */
1060         u2 ch;               /* current unicode character */
1061         u4 len;
1062
1063         for (len = 0; len < u2_length; len++) {
1064                 /* next unicode character */
1065                 ch = *text++;
1066
1067                 /* determine bytes required to store unicode character as utf */
1068                 if (ch && (ch < 0x80))
1069                         result_len++;
1070                 else if (ch < 0x800)
1071                         result_len += 2;
1072                 else
1073                         result_len += 3;
1074         }
1075
1076     return result_len;
1077 }
1078
1079
1080 /********************* function: utf_new_u2 ***********************************
1081
1082         make utf symbol from u2 array,
1083         if isclassname is true '.' is replaced by '/'
1084
1085 *******************************************************************************/
1086
1087 utf *utf_new_u2(u2 *unicode_pos, u4 unicode_length, bool isclassname)
1088 {
1089         char *buffer; /* memory buffer for  unicode characters */
1090         char *pos;    /* pointer to current position in buffer */
1091         u4 left;      /* unicode characters left */
1092         u4 buflength; /* utf length in bytes of the u2 array  */
1093         utf *result;  /* resulting utf-string */
1094         int i;
1095
1096         /* determine utf length in bytes and allocate memory */
1097         /* printf("utf_new_u2: unicode_length=%d\n",unicode_length);            */
1098         buflength = u2_utflength(unicode_pos, unicode_length);
1099         buffer    = MNEW(char, buflength);
1100
1101         left = buflength;
1102         pos  = buffer;
1103
1104         for (i = 0; i++ < unicode_length; unicode_pos++) {
1105                 /* next unicode character */
1106                 u2 c = *unicode_pos;
1107
1108                 if ((c != 0) && (c < 0x80)) {
1109                         /* 1 character */
1110                         left--;
1111                 if ((int) left < 0) break;
1112                         /* convert classname */
1113                         if (isclassname && c == '.')
1114                                 *pos++ = '/';
1115                         else
1116                                 *pos++ = (char) c;
1117
1118                 } else if (c < 0x800) {
1119                         /* 2 characters */
1120                 unsigned char high = c >> 6;
1121                 unsigned char low  = c & 0x3F;
1122                         left = left - 2;
1123                 if ((int) left < 0) break;
1124                 *pos++ = high | 0xC0;
1125                 *pos++ = low  | 0x80;
1126
1127                 } else {
1128                 /* 3 characters */
1129                 char low  = c & 0x3f;
1130                 char mid  = (c >> 6) & 0x3F;
1131                 char high = c >> 12;
1132                         left = left - 3;
1133                 if ((int) left < 0) break;
1134                 *pos++ = high | 0xE0;
1135                 *pos++ = mid  | 0x80;
1136                 *pos++ = low  | 0x80;
1137                 }
1138         }
1139
1140         /* insert utf-string into symbol-table */
1141         result = utf_new(buffer,buflength);
1142
1143         MFREE(buffer, char, buflength);
1144
1145         return result;
1146 }
1147
1148
1149 /********************* function: javastring_toutf *****************************
1150
1151         make utf symbol from javastring
1152
1153 *******************************************************************************/
1154
1155 utf *javastring_toutf(java_lang_String *string, bool isclassname)
1156 {
1157         java_lang_String *str = (java_lang_String *) string;
1158
1159 /*      printf("javastring_toutf offset: %d, len %d\n",str->offset, str->count); */
1160 /*      fflush(stdout); */
1161
1162         return utf_new_u2(str->value->data + str->offset, str->count, isclassname);
1163 }
1164
1165
1166 /********************* function: literalstring_u2 *****************************
1167
1168     searches for the javastring with the specified u2-array in
1169     the string hashtable, if there is no such string a new one is
1170     created
1171
1172     if copymode is true a copy of the u2-array is made
1173
1174 *******************************************************************************/
1175
1176 java_objectheader *literalstring_u2(java_chararray *a, u4 length, u4 offset,
1177                                                                         bool copymode)
1178 {
1179     literalstring *s;                /* hashtable element */
1180     java_lang_String *js;            /* u2-array wrapped in javastring */
1181     java_chararray *stringdata;      /* copy of u2-array */
1182         classinfo *c;
1183     u4 key;
1184     u4 slot;
1185     u2 i;
1186
1187 //#define DEBUG_LITERALSTRING_U2
1188 #ifdef DEBUG_LITERALSTRING_U2
1189     printf("literalstring_u2: length=%d, offset=%d\n", length, offset);
1190         fflush(stdout);
1191 #endif
1192
1193     /* find location in hashtable */
1194     key  = unicode_hashkey(a->data + offset, length);
1195     slot = key & (string_hash.size - 1);
1196     s    = string_hash.ptr[slot];
1197
1198     while (s) {
1199                 js = (java_lang_String *) s->string;
1200
1201                 if (length == js->count) {
1202                         /* compare text */
1203                         for (i = 0; i < length; i++) {
1204                                 if (a->data[offset + i] != js->value->data[i])
1205                                         goto nomatch;
1206                         }
1207
1208                         /* string already in hashtable, free memory */
1209                         if (!copymode)
1210                                 lit_mem_free(a, sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10);
1211
1212 #ifdef DEBUG_LITERALSTRING_U2
1213                         printf("literalstring_u2: foundentry at %p\n", js);
1214                         utf_display(javastring_toutf(js, 0));
1215                         printf("\n\n");
1216                         fflush(stdout);
1217 #endif
1218                         return (java_objectheader *) js;
1219                 }
1220
1221         nomatch:
1222                 /* follow link in external hash chain */
1223                 s = s->hashlink;
1224     }
1225
1226     if (copymode) {
1227                 /* create copy of u2-array for new javastring */
1228                 u4 arraysize = sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10;
1229                 stringdata = lit_mem_alloc(arraysize);
1230 /*              memcpy(stringdata, a, arraysize); */
1231                 memcpy(&(stringdata->header), &(a->header), sizeof(java_arrayheader));
1232                 memcpy(&(stringdata->data), &(a->data) + offset, sizeof(u2) * (length - 1) + 10);
1233
1234     } else {
1235                 stringdata = a;
1236         }
1237
1238     /* location in hashtable found, complete arrayheader */
1239     stringdata->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1240     stringdata->header.size = length;
1241
1242         /* if we use eager loading, we have to check loaded String class */
1243         if (opt_eager) {
1244                 class_java_lang_String =
1245                         class_new_intern(utf_new_char("java/lang/String"));
1246
1247                 if (!class_load(class_java_lang_String))
1248                         return NULL;
1249
1250                 list_addfirst(&unlinkedclasses, class_java_lang_String);
1251         }
1252
1253     /* create new javastring */
1254     js = LNEW(java_lang_String);
1255         js->header.vftbl = class_java_lang_String->vftbl;
1256     js->value  = stringdata;
1257     js->offset = 0;
1258     js->count  = length;
1259
1260 #ifdef DEBUG_LITERALSTRING_U2
1261         printf("literalstring_u2: newly created at %p\n", js);
1262         utf_display(javastring_toutf(js, 0));
1263         printf("\n\n");
1264         fflush(stdout);
1265 #endif
1266
1267     /* create new literalstring */
1268     s = NEW(literalstring);
1269     s->hashlink = string_hash.ptr[slot];
1270     s->string   = (java_objectheader *) js;
1271     string_hash.ptr[slot] = s;
1272
1273     /* update number of hashtable entries */
1274     string_hash.entries++;
1275
1276     /* reorganization of hashtable */
1277     if (string_hash.entries > (string_hash.size * 2)) {
1278                 /* reorganization of hashtable, average length of
1279          the external chains is approx. 2                */
1280
1281                 u4 i;
1282                 literalstring *s;
1283                 hashtable newhash; /* the new hashtable */
1284
1285                 /* create new hashtable, double the size */
1286                 init_hashtable(&newhash, string_hash.size * 2);
1287                 newhash.entries = string_hash.entries;
1288
1289                 /* transfer elements to new hashtable */
1290                 for (i = 0; i < string_hash.size; i++) {
1291                         s = string_hash.ptr[i];
1292                         while (s) {
1293                                 literalstring *nexts = s->hashlink;
1294                                 js   = (java_lang_String *) s->string;
1295                                 slot = unicode_hashkey(js->value->data, js->count) & (newhash.size - 1);
1296
1297                                 s->hashlink = newhash.ptr[slot];
1298                                 newhash.ptr[slot] = s;
1299
1300                                 /* follow link in external hash chain */
1301                                 s = nexts;
1302                         }
1303                 }
1304
1305                 /* dispose old table */
1306                 MFREE(string_hash.ptr, void*, string_hash.size);
1307                 string_hash = newhash;
1308     }
1309
1310     return (java_objectheader *) js;
1311 }
1312
1313
1314 /******************** Function: literalstring_new *****************************
1315
1316     creates a new javastring with the text of the utf-symbol
1317     and inserts it into the string hashtable
1318
1319 *******************************************************************************/
1320
1321 java_objectheader *literalstring_new(utf *u)
1322 {
1323     char *utf_ptr = u->text;         /* pointer to current unicode character in utf string */
1324     u4 utflength  = utf_strlen(u);   /* length of utf-string if uncompressed */
1325     java_chararray *a;               /* u2-array constructed from utf string */
1326     u4 i;
1327
1328     /* allocate memory */
1329     a = lit_mem_alloc(sizeof(java_chararray) + sizeof(u2) * (utflength - 1) + 10);
1330
1331     /* convert utf-string to u2-array */
1332     for (i = 0; i < utflength; i++)
1333                 a->data[i] = utf_nextu2(&utf_ptr);
1334
1335     return literalstring_u2(a, utflength, 0, false);
1336 }
1337
1338
1339 /********************** function: literalstring_free **************************
1340
1341         removes a javastring from memory
1342
1343 ******************************************************************************/
1344
1345 void literalstring_free(java_objectheader* sobj)
1346 {
1347         java_lang_String *s = (java_lang_String *) sobj;
1348         java_chararray *a = s->value;
1349
1350         /* dispose memory of java.lang.String object */
1351         LFREE(s, java_lang_String);
1352
1353         /* dispose memory of java-characterarray */
1354         LFREE(a, sizeof(java_chararray) + sizeof(u2) * (a->header.size - 1)); /* +10 ?? */
1355 }
1356
1357
1358 void copy_vftbl(vftbl **dest, vftbl *src)
1359 {
1360     *dest = src;
1361 #if 0
1362     /* XXX this kind of copying does not work (in the general
1363      * case). The interface tables would have to be copied, too. I
1364      * don't see why we should make a copy anyway. -Edwin
1365      */
1366         *dest = mem_alloc(sizeof(vftbl) + sizeof(methodptr)*(src->vftbllength-1));
1367         memcpy(*dest, src, sizeof(vftbl) - sizeof(methodptr));
1368         memcpy(&(*dest)->table, &src->table, src->vftbllength * sizeof(methodptr));
1369 #endif
1370 }
1371
1372
1373 /******************************************************************************************
1374
1375         creates method signature (excluding return type) from array of
1376         class-objects representing the parameters of the method
1377
1378 *******************************************************************************************/
1379
1380
1381 utf *create_methodsig(java_objectarray* types, char *retType)
1382 {
1383     char *buffer;       /* buffer for building the desciptor */
1384     char *pos;          /* current position in buffer */
1385     utf *result;        /* the method signature */
1386     u4 buffer_size = 3; /* minimal size=3: room for parenthesis and returntype */
1387     u4 i, j;
1388
1389     if (!types) return NULL;
1390
1391     /* determine required buffer-size */
1392     for (i = 0; i < types->header.size; i++) {
1393                 classinfo *c = (classinfo *) types->data[i];
1394                 buffer_size  = buffer_size + c->name->blength + 2;
1395     }
1396
1397     if (retType) buffer_size += strlen(retType);
1398
1399     /* allocate buffer */
1400     buffer = MNEW(u1, buffer_size);
1401     pos    = buffer;
1402
1403     /* method-desciptor starts with parenthesis */
1404     *pos++ = '(';
1405
1406     for (i = 0; i < types->header.size; i++) {
1407                 char ch;
1408
1409                 /* current argument */
1410             classinfo *c = (classinfo *) types->data[i];
1411
1412             /* current position in utf-text */
1413             char *utf_ptr = c->name->text;
1414
1415             /* determine type of argument */
1416             if ((ch = utf_nextu2(&utf_ptr)) == '[') {
1417                 /* arrayclass */
1418                 for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1419                                 *pos++ = *utf_ptr; /* copy text */
1420                         }
1421
1422             } else {
1423                         /* check for primitive types */
1424                         for (j = 0; j < PRIMITIVETYPE_COUNT; j++) {
1425                                 char *utf_pos   = utf_ptr - 1;
1426                                 char *primitive = primitivetype_table[j].wrapname;
1427
1428                                 /* compare text */
1429                                 while (utf_pos < utf_end(c->name)) {
1430                                         if (*utf_pos++ != *primitive++) goto nomatch;
1431                                 }
1432
1433                                 /* primitive type found */
1434                                 *pos++ = primitivetype_table[j].typesig;
1435                                 goto next_type;
1436
1437                         nomatch:
1438                                 ;
1439                         }
1440
1441                         /* no primitive type and no arrayclass, so must be object */
1442                         *pos++ = 'L';
1443
1444                         /* copy text */
1445                         for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1446                                 *pos++ = *utf_ptr;
1447                         }
1448
1449                         *pos++ = ';';
1450
1451                 next_type:
1452                         ;
1453                 }
1454     }
1455
1456     *pos++ = ')';
1457
1458     if (retType) {
1459                 for (i = 0; i < strlen(retType); i++) {
1460                         *pos++ = retType[i];
1461                 }
1462     }
1463
1464     /* create utf-string */
1465     result = utf_new(buffer, (pos - buffer));
1466     MFREE(buffer, u1, buffer_size);
1467
1468     return result;
1469 }
1470
1471
1472 /******************************************************************************************
1473
1474         retrieve the next argument or returntype from a descriptor
1475         and return the corresponding class
1476
1477 *******************************************************************************************/
1478
1479 classinfo *get_type(char **utf_ptr,char *desc_end, bool skip)
1480 {
1481     classinfo *c = class_from_descriptor(*utf_ptr,desc_end,utf_ptr,
1482                                          (skip) ? CLASSLOAD_SKIP : CLASSLOAD_LOAD);
1483     if (!c)
1484         /* unknown type */
1485         panic("illegal descriptor");
1486
1487     if (skip) return NULL;
1488
1489     use_class_as_object(c);
1490     return c;
1491 }
1492
1493
1494 /* get_parametertypes **********************************************************
1495
1496    use the descriptor of a method to generate a java/lang/Class array
1497    which contains the classes of the parametertypes of the method
1498
1499 *******************************************************************************/
1500
1501 java_objectarray* get_parametertypes(methodinfo *m)
1502 {
1503     utf  *descr    =  m->descriptor;    /* method-descriptor */
1504     char *utf_ptr  =  descr->text;      /* current position in utf-text */
1505     char *desc_end =  utf_end(descr);   /* points behind utf string     */
1506     java_objectarray* result;
1507     int parametercount = 0;
1508     int i;
1509
1510     /* skip '(' */
1511     utf_nextu2(&utf_ptr);
1512
1513     /* determine number of parameters */
1514     while (*utf_ptr != ')') {
1515         get_type(&utf_ptr, desc_end, true);
1516                 parametercount++;
1517     }
1518
1519     /* create class-array */
1520     result = builtin_anewarray(parametercount, class_java_lang_Class);
1521
1522     utf_ptr = descr->text;
1523     utf_nextu2(&utf_ptr);
1524
1525     /* get returntype classes */
1526     for (i = 0; i < parametercount; i++)
1527             result->data[i] =
1528                         (java_objectheader *) get_type(&utf_ptr, desc_end, false);
1529
1530     return result;
1531 }
1532
1533
1534 /* get_exceptiontypes **********************************************************
1535
1536    get the exceptions which can be thrown by a method
1537
1538 *******************************************************************************/
1539
1540 java_objectarray* get_exceptiontypes(methodinfo *m) {
1541     u2 exccount=m->thrownexceptionscount;
1542     u2 i;
1543     java_objectarray *result;
1544     /* create class-array */
1545     result = builtin_anewarray(exccount, class_java_lang_Class);
1546     for (i=0;i<exccount;i++) {
1547         java_objectheader *oh=(java_objectheader*)(m->thrownexceptions[i]);
1548         use_class_as_object(oh);
1549         result->data[i]=oh;
1550     }
1551     return result;
1552 }
1553
1554
1555
1556
1557
1558 /******************************************************************************************
1559
1560         get the returntype class of a method
1561
1562 *******************************************************************************************/
1563
1564 classinfo *get_returntype(methodinfo *m)
1565 {
1566         char *utf_ptr;   /* current position in utf-text */
1567         char *desc_end;  /* points behind utf string     */
1568         utf *desc = m->descriptor; /* method-descriptor  */
1569
1570         utf_ptr  = desc->text;
1571         desc_end = utf_end(desc);
1572
1573         /* ignore parametertypes */
1574         while ((utf_ptr<desc_end) && utf_nextu2(&utf_ptr)!=')')
1575                 /* skip */ ;
1576
1577         return get_type(&utf_ptr,desc_end, false);
1578 }
1579
1580
1581 /*****************************************************************************/
1582 /*****************************************************************************/
1583
1584
1585 /*--------------------------------------------------------*/
1586 void printNativeCall(nativeCall nc) {
1587   int i,j;
1588
1589   printf("\n%s's Native Methods call:\n",nc.classname); fflush(stdout);
1590   for (i=0; i<nc.methCnt; i++) {
1591       printf("\tMethod=%s %s\n",nc.methods[i].methodname, nc.methods[i].descriptor);fflush(stdout);
1592
1593     for (j=0; j<nc.callCnt[i]; j++) {
1594         printf("\t\t<%i,%i>aCalled = %s %s %s\n",i,j,
1595         nc.methods[i].methodCalls[j].classname,
1596         nc.methods[i].methodCalls[j].methodname,
1597         nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1598       }
1599     }
1600   printf("-+++++--------------------\n");fflush(stdout);
1601 }
1602
1603 /*--------------------------------------------------------*/
1604 void printCompNativeCall(nativeCompCall nc) {
1605   int i,j;
1606   printf("printCompNativeCall BEGIN\n");fflush(stdout);
1607   printf("\n%s's Native Comp Methods call:\n",nc.classname->text);fflush(stdout);
1608   utf_display(nc.classname); fflush(stdout);
1609
1610   for (i=0; i<nc.methCnt; i++) {
1611     printf("\tMethod=%s %s\n",nc.methods[i].methodname->text,nc.methods[i].descriptor->text);fflush(stdout);
1612     utf_display(nc.methods[i].methodname); fflush(stdout);
1613     utf_display(nc.methods[i].descriptor);fflush(stdout);
1614     printf("\n");fflush(stdout);
1615
1616     for (j=0; j<nc.callCnt[i]; j++) {
1617       printf("\t\t<%i,%i>bCalled = ",i,j);fflush(stdout);
1618         utf_display(nc.methods[i].methodCalls[j].classname);fflush(stdout);
1619         utf_display(nc.methods[i].methodCalls[j].methodname); fflush(stdout);
1620         utf_display(nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1621         printf("\n");fflush(stdout);
1622       }
1623     }
1624 printf("---------------------\n");fflush(stdout);
1625 }
1626
1627
1628 /*--------------------------------------------------------*/
1629 classMeth findNativeMethodCalls(utf *c, utf *m, utf *d )
1630 {
1631     int i = 0;
1632     int j = 0;
1633     int cnt = 0;
1634     classMeth mc;
1635     mc.i_class = i;
1636     mc.j_method = j;
1637     mc.methCnt = cnt;
1638
1639     return mc;
1640 }
1641
1642 /*--------------------------------------------------------*/
1643 nativeCall* findNativeClassCalls(char *aclassname ) {
1644 int i;
1645
1646 for (i=0;i<NATIVECALLSSIZE; i++) {
1647    /* convert table to utf later to speed up search */
1648    if (strcmp(nativeCalls[i].classname, aclassname) == 0)
1649         return &nativeCalls[i];
1650    }
1651
1652 return NULL;
1653 }
1654 /*--------------------------------------------------------*/
1655 /*--------------------------------------------------------*/
1656 void utfNativeCall(nativeCall nc, nativeCompCall *ncc) {
1657   int i,j;
1658
1659
1660   ncc->classname = utf_new_char(nc.classname);
1661   ncc->methCnt = nc.methCnt;
1662
1663   for (i=0; i<nc.methCnt; i++) {
1664     ncc->methods[i].methodname = utf_new_char(nc.methods[i].methodname);
1665     ncc->methods[i].descriptor = utf_new_char(nc.methods[i].descriptor);
1666     ncc->callCnt[i] = nc.callCnt[i];
1667
1668     for (j=0; j<nc.callCnt[i]; j++) {
1669
1670         ncc->methods[i].methodCalls[j].classname  = utf_new_char(nc.methods[i].methodCalls[j].classname);
1671
1672         if (strcmp("", nc.methods[i].methodCalls[j].methodname) != 0) {
1673           ncc->methods[i].methodCalls[j].methodname = utf_new_char(nc.methods[i].methodCalls[j].methodname);
1674           ncc->methods[i].methodCalls[j].descriptor = utf_new_char(nc.methods[i].methodCalls[j].descriptor);
1675           }
1676         else {
1677           ncc->methods[i].methodCalls[j].methodname = NULL;
1678           ncc->methods[i].methodCalls[j].descriptor = NULL;
1679           }
1680       }
1681     }
1682 }
1683
1684
1685
1686 /*--------------------------------------------------------*/
1687
1688 bool natcall2utf(bool natcallcompdone) {
1689 int i;
1690
1691 if (natcallcompdone)
1692         return true;
1693
1694 for (i=0;i<NATIVECALLSSIZE; i++) {
1695    utfNativeCall  (nativeCalls[i], &nativeCompCalls[i]);
1696    }
1697
1698 return true;
1699 }
1700
1701 /*--------------------------------------------------------*/
1702
1703
1704 java_objectarray *builtin_asm_createclasscontextarray(classinfo **end,classinfo **start)
1705 {
1706 #if defined(__GNUC__)
1707 #warning platform dependend
1708 #endif
1709         java_objectarray *tmpArray;
1710         int i;
1711         classinfo **current;
1712         classinfo *c;
1713         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1714         /*printf("end %p, start %p, size %ld\n",end,start,size);*/
1715         if (!class_java_lang_Class)
1716                 class_java_lang_Class = class_new(utf_new_char ("java/lang/Class"));
1717         if (!class_java_lang_SecurityManager)
1718                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1719         if (size>0) {
1720                 if (start==class_java_lang_SecurityManager) {
1721                         size--;
1722                         start--;
1723                 }
1724         }
1725         tmpArray=builtin_newarray(size, class_array_of(class_java_lang_Class)->vftbl);
1726
1727         for(i=0,current=start;i<size;i++,current--) {
1728                 c=*current;
1729 /*              printf("%d\n",i);
1730                 utf_display(c->name);*/
1731                 use_class_as_object(c);
1732                 tmpArray->data[i]=c;
1733         }
1734         return tmpArray;
1735
1736 }
1737
1738 java_lang_ClassLoader *builtin_asm_getclassloader(classinfo **end,classinfo **start)
1739 {
1740 #if defined(__GNUC__)
1741 #warning platform dependend
1742 #endif
1743         int i;
1744         classinfo **current;
1745         classinfo *c;
1746         classinfo *privilegedAction;
1747         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1748 /*      log_text("builtin_asm_getclassloader");
1749         printf("end %p, start %p, size %ld\n",end,start,size);*/
1750
1751         if (!class_java_lang_SecurityManager)
1752                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1753         if (size>0) {
1754                 if (start==class_java_lang_SecurityManager) {
1755                         size--;
1756                         start--;
1757                 }
1758         }
1759
1760         privilegedAction=class_new(utf_new_char("java/security/PrivilegedAction"));
1761
1762         for(i=0,current=start;i<size;i++,current--) {
1763                 c=*current;
1764                 if (c==privilegedAction) return NULL;
1765                 if (c->classloader) return c->classloader;
1766         }
1767         return NULL;
1768
1769
1770
1771
1772 /*
1773         log_text("Java_java_lang_VMSecurityManager_currentClassLoader");
1774         init_systemclassloader();
1775
1776         return SystemClassLoader;*/
1777 }
1778
1779 /*
1780  * These are local overrides for various environment variables in Emacs.
1781  * Please do not remove this and leave it at the end of the file, where
1782  * Emacs will automagically detect them.
1783  * ---------------------------------------------------------------------
1784  * Local variables:
1785  * mode: c
1786  * indent-tabs-mode: t
1787  * c-basic-offset: 4
1788  * tab-width: 4
1789  * End:
1790  */