src/native/native.c

   1 /* native/native.c - table of native functions
   2
   3    Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
   4    R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
   5    C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
   6    Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 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 1888 2005-01-27 21:04:09Z motse $
  35
  36 */
  37
  38
  39 #include <stdlib.h>
  40 #include <unistd.h>
  41 #include <time.h>
  42 #include <math.h>
  43 #include <string.h>
  44 #include <assert.h>
  45 #include <sys/time.h>
  46 #include <utime.h>
  47
  48 /* Include files for IO functions */
  49
  50 #include <fcntl.h>
  51 #include <dirent.h>
  52 #include <sys/types.h>
  53 #ifdef _OSF_SOURCE
  54 #include <sys/mode.h>
  55 #endif
  56 #include <sys/stat.h>
  57
  58 #include "config.h"
  59 #include "cacao/cacao.h"
  60 #include "mm/memory.h"
  61 #include "native/jni.h"
  62 #include "native/native.h"
  63 #include "native/include/java_lang_Throwable.h"
  64 #include "toolbox/logging.h"
  65 #include "vm/builtin.h"
  66 #include "vm/exceptions.h"
  67 #include "vm/global.h"
  68 #include "vm/loader.h"
  69 #include "vm/options.h"
  70 #include "vm/tables.h"
  71 #include "vm/jit/asmpart.h"
  72 #include "vm/jit/jit.h"
  73
  74
  75 /* include table of native functions ******************************************/
  76
  77 /* XXX quick hack? */
  78 #if defined(USE_GTK)
  79 #include "native/vm/GtkComponentPeer.c"
  80 #include "native/vm/GtkScrollPanePeer.c"
  81 #include "native/vm/GtkFileDialogPeer.c"
  82 #endif
  83
  84 #include "nativetable.inc"
  85
  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 /* the system classloader object */
 113 struct java_lang_ClassLoader *SystemClassLoader = NULL;
 114
 115 /* for raising exceptions from native methods */
 116 #if !defined(USE_THREADS) || !defined(NATIVE_THREADS)
 117 java_objectheader* _exceptionptr = NULL;
 118 #endif
 119
 120
 121 /** Create a new ProtectionDomain object for a classpath_info structure.
 122         This object will be used for every java.lang.class object who represents a
 123         class which has been loaded from the location this classpath_info structure
 124         points to. **/
 125 static inline void create_ProtectionDomain(struct classpath_info *cpi) {
 126         jmethodID mid;
 127         jobject obj;
 128
 129         jobject cs;
 130         jobject pc;
 131         jobject url;
 132
 133         classinfo *c;
 134         classinfo *classpc;
 135
 136         /* create a new java.io.File object */
 137         c = class_new(utf_new_char_classname("java/io/File"));
 138
 139         if (!class_load(c) || !class_link(c)) {
 140                 log_text("unable to find java.io.File");
 141                 throw_main_exception_exit();
 142         }
 143
 144         mid = class_resolvemethod(c, utf_new_char("<init>"), utf_new_char("(Ljava/lang/String;)V"));
 145
 146         if (mid == NULL) {
 147                 log_text("unable to find constructor in java.io.File");
 148                 cacao_exit(1);
 149         }
 150
 151         obj = builtin_new (c);
 152         asm_calljavafunction(mid,obj,javastring_new(utf_new_char(cpi->path)),NULL,NULL);
 153
 154         if (*exceptionptr != NULL) {
 155                 utf_display((*exceptionptr)->vftbl->class->name);
 156                 printf ("\n");
 157                 fflush (stdout);
 158                 cacao_exit(1);
 159         }
 160
 161         /* get URL of CodeSource from java.io.File object */
 162         mid = class_resolvemethod(c, utf_new_char("toURL"), utf_new_char("()Ljava/net/URL;"));
 163
 164         if (mid == NULL) {
 165                 log_text("unable to find toURL in java.io.File");
 166                 cacao_exit(1);
 167         }
 168
 169         url = asm_calljavafunction(mid,obj,url,NULL,NULL);
 170
 171         if (*exceptionptr != NULL) {
 172                 utf_display((*exceptionptr)->vftbl->class->name);
 173                 printf ("\n");
 174                 fflush (stdout);
 175                 cacao_exit(1);
 176         }
 177
 178         /* create a new java.security.CodeSource object */
 179         c = class_new(utf_new_char_classname("java/security/CodeSource"));
 180
 181         if (!class_load(c) || !class_link(c)) {
 182                 log_text("unable to find java.security.CodeSource");
 183                 throw_main_exception_exit();
 184         }
 185
 186         mid = class_resolvemethod(c,
 187                                                           utf_new_char("<init>"),
 188                                                           utf_new_char("(Ljava/net/URL;[Ljava/security/cert/Certificate;)V"));
 189
 190         if (mid == NULL) {
 191                 log_text("unable to find constructor in java.security.CodeSource");
 192                 cacao_exit(1);
 193         }
 194
 195         cs = builtin_new (c);
 196         asm_calljavafunction(mid,cs,url,NULL,NULL);
 197
 198         if (*exceptionptr != NULL) {
 199                 utf_display((*exceptionptr)->vftbl->class->name);
 200                 printf ("\n");
 201                 fflush (stdout);
 202                 cacao_exit(1);
 203         }
 204
 205         /* create a new java.security.PermissionCollection object */
 206
 207
 208         classpc = class_new(utf_new_char_classname("java/security/PermissionCollection"));
 209
 210         if (!class_load(c) || !class_link(c)) {
 211                 log_text("unable to find java.security.PermissionCollection");
 212                 throw_main_exception_exit();
 213         }
 214
 215         mid = class_resolvemethod(classpc, utf_new_char("<init>"),
 216                                                           utf_new_char("()V"));
 217
 218         if (mid == NULL) {
 219                 log_text("unable to find constructor in java.security.PermissionCollection");
 220                 cacao_exit(1);
 221         }
 222
 223         pc = builtin_new (classpc);
 224         asm_calljavafunction(mid,pc,NULL,NULL,NULL);
 225
 226         if (*exceptionptr != NULL) {
 227                 utf_display((*exceptionptr)->vftbl->class->name);
 228                 printf ("\n");
 229                 fflush (stdout);
 230                 cacao_exit(1);
 231         }
 232
 233     /* add AllPermission - todo: this should not be the default behaviour */
 234         c = class_new(utf_new_char_classname("java/security/AllPermission"));
 235
 236         if (!class_load(c) || !class_link(c)) {
 237                 log_text("unable to find java.security.AllPermission");
 238                 throw_main_exception_exit();
 239         }
 240
 241         mid = class_resolvemethod(c,
 242                                                           utf_new_char("<init>"),
 243                                                           utf_new_char("()V"));
 244
 245         if (mid == NULL) {
 246                 log_text("unable to find constructor in java.security.AllPermission");
 247                 cacao_exit(1);
 248         }
 249
 250
 251         obj = builtin_new (c);
 252         asm_calljavafunction(mid,obj,NULL,NULL,NULL);
 253
 254         if (*exceptionptr != NULL) {
 255                 utf_display((*exceptionptr)->vftbl->class->name);
 256                 printf ("\n");
 257                 fflush (stdout);
 258                 cacao_exit(1);
 259         }
 260
 261
 262         mid = class_resolvemethod(classpc,
 263                                                           utf_new_char("add"),
 264                                                           utf_new_char("(Ljava/security/Permission;)V"));
 265
 266         if (mid == NULL) {
 267                 log_text("unable to find add in java.security.PermissionCollection");
 268                 cacao_exit(1);
 269         }
 270
 271         asm_calljavafunction(mid,pc,obj,NULL,NULL);
 272         if (*exceptionptr != NULL) {
 273                 utf_display((*exceptionptr)->vftbl->class->name);
 274                 printf ("\n");
 275                 fflush (stdout);
 276                 cacao_exit(1);
 277         }
 278
 279         /* create a new java.security.ProtectionDomain object */
 280         c = class_new(utf_new_char_classname("java/security/ProtectionDomain"));
 281
 282         if (!class_load(c) || !class_link(c)) {
 283                 log_text("unable to find java.security.ProtectionDomain");
 284                 throw_main_exception_exit();
 285         }
 286
 287         mid = class_resolvemethod(c,
 288                                                           utf_new_char("<init>"),
 289                                                           utf_new_char("(Ljava/security/CodeSource;Ljava/security/PermissionCollection;)V"));
 290
 291         if (mid == NULL) {
 292                 log_text("unable to find constructor in java.security.ProtectionDomain");
 293                 cacao_exit(1);
 294         }
 295
 296         obj = builtin_new (c);
 297         asm_calljavafunction(mid,obj,cs,pc,NULL);
 298
 299         if (*exceptionptr != NULL) {
 300                 utf_display((*exceptionptr)->vftbl->class->name);
 301                 printf ("\n");
 302                 fflush (stdout);
 303                 cacao_exit(1);
 304         }
 305
 306         cpi->pd = (struct java_security_ProtectionDomain*) obj;
 307 }
 308
 309
 310 /************* use classinfo structure as java.lang.Class object **************/
 311
 312 void use_class_as_object(classinfo *c)
 313 {
 314         if (!c->classvftbl) {
 315                 /* is the class loaded */
 316                 if (!c->loaded)
 317                         if (!class_load(c))
 318                                 panic("Class could not be loaded in use_class_as_object");
 319                 /* is the class linked */
 320                 if (!c->linked)
 321                         if (!class_link(c))
 322                                 panic("Class could not be linked in use_class_as_object");
 323
 324                 /*if (class_java_lang_Class ==0) panic("java/lang/Class not loaded in use_class_as_object");
 325                 if (class_java_lang_Class->vftbl ==0) panic ("vftbl == 0 in use_class_as_object");*/
 326                 c->header.vftbl = class_java_lang_Class->vftbl;
 327                 c->classvftbl = true;
 328
 329
 330                 /* set a real, java object ProtectionDomain and CodeSource.
 331                    Only one ProtectionDomain-object per classpath_info is needed.*/
 332                 if (c->pd != NULL) {
 333             /* only set ProtectionDomain for non primitive type classes*/
 334                         if (((struct classpath_info*)c->pd)->pd == NULL)
 335                                 create_ProtectionDomain((struct classpath_info *)c->pd);
 336
 337                         c->pd = ((struct classpath_info*)c->pd)->pd;
 338                 }
 339         }
 340
 341 }
 342
 343
 344 /************************** tables for methods ********************************/
 345
 346 #undef JOWENN_DEBUG
 347 #undef JOWENN_DEBUG1
 348
 349 #ifdef STATIC_CLASSPATH
 350 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
 351
 352 /* table for fast string comparison */
 353 static nativecompref nativecomptable[NATIVETABLESIZE];
 354
 355 /* string comparsion table initialized */
 356 static bool nativecompdone = false;
 357 #endif
 358
 359
 360 /* XXX don't define this in a header file!!! */
 361
 362 static struct nativeCall nativeCalls[] =
 363 {
 364 #include "nativecalls.inc"
 365 };
 366
 367 #define NATIVECALLSSIZE    (sizeof(nativeCalls) / sizeof(struct nativeCall))
 368
 369 struct nativeCompCall nativeCompCalls[NATIVECALLSSIZE];
 370
 371 /******************************************************************************/
 372
 373 /**include "natcalls.h" **/
 374
 375
 376 /*********************** function: native_loadclasses **************************
 377
 378         load classes required for native methods
 379
 380 *******************************************************************************/
 381
 382 void native_loadclasses()
 383 {
 384         static int classesLoaded = 0; /*temporary hack JoWenn*/
 385         void *p;
 386
 387         if (classesLoaded)
 388                 return;
 389
 390         classesLoaded = 1;
 391
 392 #if !defined(STATIC_CLASSPATH)
 393         /* We need to access the dummy native table, not only to remove a warning */
 394         /* but to be sure that the table is not optimized away (gcc does this     */
 395         /* since 3.4).                                                            */
 396         p = &dummynativetable;
 397 #endif
 398
 399         class_java_lang_Cloneable =
 400                 class_new(utf_new_char("java/lang/Cloneable"));
 401         class_load(class_java_lang_Cloneable);
 402         class_link(class_java_lang_Cloneable);
 403
 404         class_java_lang_Class =
 405                 class_new(utf_new_char("java/lang/Class"));
 406         class_load(class_java_lang_Class);
 407         class_link(class_java_lang_Class);
 408
 409         class_java_lang_VMClass =
 410                 class_new(utf_new_char("java/lang/VMClass"));
 411         class_load(class_java_lang_VMClass);
 412         class_link(class_java_lang_VMClass);
 413
 414         class_java_lang_ClassLoader =
 415                 class_new(utf_new_char("java/lang/ClassLoader"));
 416         class_load(class_java_lang_ClassLoader);
 417         class_link(class_java_lang_ClassLoader);
 418
 419         /* load classes for wrapping primitive types */
 420         class_java_lang_Double = class_new(utf_new_char("java/lang/Double"));
 421         class_load(class_java_lang_Double);
 422         class_link(class_java_lang_Double);
 423
 424         class_java_lang_Float = class_new(utf_new_char("java/lang/Float"));
 425         class_load(class_java_lang_Float);
 426         class_link(class_java_lang_Float);
 427
 428         class_java_lang_Character =     class_new(utf_new_char("java/lang/Character"));
 429         class_load(class_java_lang_Character);
 430         class_link(class_java_lang_Character);
 431
 432         class_java_lang_Integer = class_new(utf_new_char("java/lang/Integer"));
 433         class_load(class_java_lang_Integer);
 434         class_link(class_java_lang_Integer);
 435
 436         class_java_lang_Long = class_new(utf_new_char("java/lang/Long"));
 437         class_load(class_java_lang_Long);
 438         class_link(class_java_lang_Long);
 439
 440         class_java_lang_Byte = class_new(utf_new_char("java/lang/Byte"));
 441         class_load(class_java_lang_Byte);
 442         class_link(class_java_lang_Byte);
 443
 444         class_java_lang_Short = class_new(utf_new_char("java/lang/Short"));
 445         class_load(class_java_lang_Short);
 446         class_link(class_java_lang_Short);
 447
 448         class_java_lang_Boolean = class_new(utf_new_char("java/lang/Boolean"));
 449         class_load(class_java_lang_Boolean);
 450         class_link(class_java_lang_Boolean);
 451
 452         class_java_lang_Void = class_new(utf_new_char("java/lang/Void"));
 453         class_load(class_java_lang_Void);
 454         class_link(class_java_lang_Void);
 455 }
 456
 457
 458 /*****************************************************************************
 459
 460         create systemclassloader object and initialize instance fields
 461
 462 ******************************************************************************/
 463
 464 void init_systemclassloader()
 465 {
 466         if (!SystemClassLoader) {
 467                 native_loadclasses();
 468
 469                 /* create object and call initializer */
 470                 SystemClassLoader = (java_lang_ClassLoader *) native_new_and_init(class_new(utf_new_char("gnu/java/lang/SystemClassLoader")));
 471
 472                 /* systemclassloader has no parent */
 473                 SystemClassLoader->parent      = NULL;
 474                 SystemClassLoader->initialized = true;
 475         }
 476 }
 477
 478
 479 /*********************** Function: native_findfunction *************************
 480
 481         Looks up a method (must have the same class name, method name, descriptor
 482         and 'static'ness) and returns a function pointer to it.
 483         Returns: function pointer or NULL (if there is no such method)
 484
 485         Remark: For faster operation, the names/descriptors are converted from C
 486                 strings to Unicode the first time this function is called.
 487
 488 *******************************************************************************/
 489
 490 functionptr native_findfunction(utf *cname, utf *mname,
 491                                                                 utf *desc, bool isstatic)
 492 {
 493 #ifdef STATIC_CLASSPATH
 494         int i;
 495         /* entry of table for fast string comparison */
 496         struct nativecompref *n;
 497         /* for warning message if no function is found */
 498         char *buffer;
 499         int buffer_len;
 500
 501         isstatic = isstatic ? true : false;
 502
 503         if (!nativecompdone) {
 504                 for (i = 0; i < NATIVETABLESIZE; i++) {
 505                         nativecomptable[i].classname  =
 506                                 utf_new_char(nativetable[i].classname);
 507                         nativecomptable[i].methodname =
 508                                 utf_new_char(nativetable[i].methodname);
 509                         nativecomptable[i].descriptor =
 510                                 utf_new_char(nativetable[i].descriptor);
 511                         nativecomptable[i].isstatic   =
 512                                 nativetable[i].isstatic;
 513                         nativecomptable[i].func       =
 514                                 nativetable[i].func;
 515                 }
 516                 nativecompdone = true;
 517         }
 518
 519 #ifdef JOWENN_DEBUG
 520         buffer_len =
 521                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 522
 523         buffer = MNEW(char, buffer_len);
 524
 525         strcpy(buffer, "searching matching function in native table:");
 526         utf_sprint(buffer+strlen(buffer), mname);
 527         strcpy(buffer+strlen(buffer), ": ");
 528         utf_sprint(buffer+strlen(buffer), desc);
 529         strcpy(buffer+strlen(buffer), " for class ");
 530         utf_sprint(buffer+strlen(buffer), cname);
 531
 532         log_text(buffer);
 533
 534         MFREE(buffer, char, buffer_len);
 535 #endif
 536
 537         for (i = 0; i < NATIVETABLESIZE; i++) {
 538                 n = &(nativecomptable[i]);
 539
 540                 if (cname == n->classname && mname == n->methodname &&
 541                     desc == n->descriptor && isstatic == n->isstatic)
 542                         return n->func;
 543 #ifdef JOWENN_DEBUG
 544                         else {
 545                                 if (cname == n->classname && mname == n->methodname )  log_text("static and descriptor mismatch");
 546
 547                                 else {
 548                                         buffer_len =
 549                                           utf_strlen(n->classname) + utf_strlen(n->methodname) + utf_strlen(n->descriptor) + 64;
 550
 551                                         buffer = MNEW(char, buffer_len);
 552
 553                                         strcpy(buffer, "comparing with:");
 554                                         utf_sprint(buffer+strlen(buffer), n->methodname);
 555                                         strcpy (buffer+strlen(buffer), ": ");
 556                                         utf_sprint(buffer+strlen(buffer), n->descriptor);
 557                                         strcpy(buffer+strlen(buffer), " for class ");
 558                                         utf_sprint(buffer+strlen(buffer), n->classname);
 559
 560                                         log_text(buffer);
 561
 562                                         MFREE(buffer, char, buffer_len);
 563                                 }
 564                         }
 565 #endif
 566         }
 567
 568
 569         /* no function was found, display warning */
 570
 571         buffer_len =
 572                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 573
 574         buffer = MNEW(char, buffer_len);
 575
 576         strcpy(buffer, "warning: native function ");
 577         utf_sprint(buffer + strlen(buffer), mname);
 578         strcpy(buffer + strlen(buffer), ": ");
 579         utf_sprint(buffer + strlen(buffer), desc);
 580         strcpy(buffer + strlen(buffer), " not found in class ");
 581         utf_sprint(buffer + strlen(buffer), cname);
 582
 583         log_text(buffer);
 584
 585         MFREE(buffer, char, buffer_len);
 586
 587 /*      exit(1); */
 588
 589         /* keep compiler happy */
 590         return NULL;
 591 #else
 592 /* dynamic classpath */
 593   return 0;
 594 #endif
 595 }
 596
 597
 598 /********************** function: javastring_new *******************************
 599
 600         creates a new object of type java/lang/String with the text of
 601         the specified utf8-string
 602
 603         return: pointer to the string or NULL if memory is exhausted.
 604
 605 *******************************************************************************/
 606
 607 java_lang_String *javastring_new(utf *u)
 608 {
 609         char *utf_ptr;                  /* current utf character in utf string    */
 610         u4 utflength;                   /* length of utf-string if uncompressed   */
 611         java_lang_String *s;                /* result-string                          */
 612         java_chararray *a;
 613         s4 i;
 614
 615         if (!u) {
 616                 *exceptionptr = new_nullpointerexception();
 617                 return NULL;
 618         }
 619
 620         utf_ptr = u->text;
 621         utflength = utf_strlen(u);
 622
 623         s = (java_lang_String *) builtin_new(class_java_lang_String);
 624         a = builtin_newarray_char(utflength);
 625
 626         /* javastring or character-array could not be created */
 627         if (!a || !s)
 628                 return NULL;
 629
 630         /* decompress utf-string */
 631         for (i = 0; i < utflength; i++)
 632                 a->data[i] = utf_nextu2(&utf_ptr);
 633
 634         /* set fields of the javastring-object */
 635         s->value  = a;
 636         s->offset = 0;
 637         s->count  = utflength;
 638
 639         return s;
 640 }
 641
 642
 643 /********************** function: javastring_new_char **************************
 644
 645         creates a new java/lang/String object which contains the convertet
 646         C-string passed via text.
 647
 648         return: the object pointer or NULL if memory is exhausted.
 649
 650 *******************************************************************************/
 651
 652 java_lang_String *javastring_new_char(const char *text)
 653 {
 654         s4 i;
 655         s4 len;                /* length of the string */
 656         java_lang_String *s;   /* result-string */
 657         java_chararray *a;
 658
 659         if (!text) {
 660                 *exceptionptr = new_nullpointerexception();
 661                 return NULL;
 662         }
 663
 664         len = strlen(text);
 665
 666         s = (java_lang_String *) builtin_new(class_java_lang_String);
 667         a = builtin_newarray_char(len);
 668
 669         /* javastring or character-array could not be created */
 670         if (!a || !s)
 671                 return NULL;
 672
 673         /* copy text */
 674         for (i = 0; i < len; i++)
 675                 a->data[i] = text[i];
 676
 677         /* set fields of the javastring-object */
 678         s->value  = a;
 679         s->offset = 0;
 680         s->count  = len;
 681
 682         return s;
 683 }
 684
 685
 686 /************************* function javastring_tochar **************************
 687
 688         converts a Java string into a C string.
 689
 690         return: pointer to C string
 691
 692         Caution: every call of this function overwrites the previous string !!!
 693
 694 *******************************************************************************/
 695
 696 static char stringbuffer[MAXSTRINGSIZE];
 697
 698 char *javastring_tochar(java_objectheader *so)
 699 {
 700         java_lang_String *s = (java_lang_String *) so;
 701         java_chararray *a;
 702         s4 i;
 703
 704         if (!s)
 705                 return "";
 706
 707         a = s->value;
 708
 709         if (!a)
 710                 return "";
 711
 712         if (s->count > MAXSTRINGSIZE)
 713                 return "";
 714
 715         for (i = 0; i < s->count; i++)
 716                 stringbuffer[i] = a->data[s->offset + i];
 717
 718         stringbuffer[i] = '\0';
 719
 720         return stringbuffer;
 721 }
 722
 723
 724 /****************** function class_findfield_approx ****************************
 725
 726         searches in 'classinfo'-structure for a field with the
 727         specified name
 728
 729 *******************************************************************************/
 730
 731 fieldinfo *class_findfield_approx(classinfo *c, utf *name)
 732 {
 733         s4 i;
 734
 735         for (i = 0; i < c->fieldscount; i++) {
 736                 /* compare field names */
 737                 if ((c->fields[i].name == name))
 738                         return &(c->fields[i]);
 739         }
 740
 741         /* field was not found, raise exception */
 742         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 743
 744         return NULL;
 745 }
 746
 747
 748 s4 class_findfield_index_approx(classinfo *c, utf *name)
 749 {
 750         s4 i;
 751
 752         for (i = 0; i < c->fieldscount; i++) {
 753                 /* compare field names */
 754                 if ((c->fields[i].name == name))
 755                         return i;
 756         }
 757
 758         /* field was not found, raise exception */
 759         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 760
 761         return -1;
 762 }
 763
 764
 765 /********************** function: native_new_and_init *************************
 766
 767         Creates a new object on the heap and calls the initializer.
 768         Returns the object pointer or NULL if memory is exhausted.
 769
 770 *******************************************************************************/
 771
 772 java_objectheader *native_new_and_init(classinfo *c)
 773 {
 774         methodinfo *m;
 775         java_objectheader *o;
 776
 777         if (!c)
 778                 return *exceptionptr;
 779
 780         /* create object */
 781
 782         o = builtin_new(c);
 783
 784         if (!o)
 785                 return NULL;
 786
 787         /* find initializer */
 788
 789         m = class_findmethod(c, utf_new_char("<init>"), utf_new_char("()V"));
 790
 791         /* initializer not found */
 792
 793         if (!m)
 794                 return o;
 795
 796         /* call initializer */
 797
 798         asm_calljavafunction(m, o, NULL, NULL, NULL);
 799
 800         return o;
 801 }
 802
 803
 804 java_objectheader *native_new_and_init_string(classinfo *c, java_lang_String *s)
 805 {
 806         methodinfo *m;
 807         java_objectheader *o;
 808
 809         if (!c)
 810                 return *exceptionptr;
 811
 812         /* create object */
 813
 814         o = builtin_new(c);
 815
 816         if (!o)
 817                 return NULL;
 818
 819         /* find initializer */
 820
 821         m = class_resolveclassmethod(c,
 822                                                                  utf_new_char("<init>"),
 823                                                                  utf_new_char("(Ljava/lang/String;)V"),
 824                                                                  NULL,
 825                                                                  true);
 826
 827         /* initializer not found */
 828
 829         if (!m)
 830                 return NULL;
 831
 832         /* call initializer */
 833
 834         asm_calljavafunction(m, o, s, NULL, NULL);
 835
 836         return o;
 837 }
 838
 839
 840 java_objectheader *native_new_and_init_int(classinfo *c, s4 i)
 841 {
 842         methodinfo *m;
 843         java_objectheader *o;
 844
 845         if (!c)
 846                 return *exceptionptr;
 847
 848         /* create object */
 849
 850         o = builtin_new(c);
 851
 852         if (!o)
 853                 return NULL;
 854
 855         /* find initializer */
 856
 857         m = class_resolveclassmethod(c,
 858                                                                  utf_new_char("<init>"),
 859                                                                  utf_new_char("(I)V"),
 860                                                                  NULL,
 861                                                                  true);
 862
 863         /* initializer not found  */
 864         if (!m)
 865                 return NULL;
 866
 867         /* call initializer */
 868
 869         asm_calljavafunction(m, o, (void *) (ptrint) i, NULL, NULL);
 870
 871         return o;
 872 }
 873
 874
 875 java_objectheader *native_new_and_init_throwable(classinfo *c, java_lang_Throwable *t)
 876 {
 877         methodinfo *m;
 878         java_objectheader *o;
 879
 880         if (!c)
 881                 return *exceptionptr;
 882
 883         /* create object */
 884
 885         o = builtin_new(c);
 886
 887         if (!o)
 888                 return NULL;
 889
 890         /* find initializer */
 891
 892         m = class_findmethod(c,
 893                                                  utf_new_char("<init>"),
 894                                                  utf_new_char("(Ljava/lang/Throwable;)V"));
 895
 896         /* initializer not found */
 897
 898         if (!m)
 899                 return NULL;
 900
 901         /* call initializer */
 902
 903         asm_calljavafunction(m, o, t, NULL, NULL);
 904
 905         return o;
 906 }
 907
 908
 909 /******************** function: stringtable_update ****************************
 910
 911         traverses the javastring hashtable and sets the vftbl-entries of
 912         javastrings which were temporarily set to NULL, because
 913         java.lang.Object was not yet loaded
 914
 915 *******************************************************************************/
 916
 917 void stringtable_update ()
 918 {
 919         java_lang_String *js;
 920         java_chararray *a;
 921         literalstring *s;       /* hashtable entry */
 922         int i;
 923
 924         for (i = 0; i < string_hash.size; i++) {
 925                 s = string_hash.ptr[i];
 926                 if (s) {
 927                         while (s) {
 928
 929                                 js = (java_lang_String *) s->string;
 930
 931                                 if (!js || !js->value)
 932                                         /* error in hashtable found */
 933                                         panic("invalid literalstring in hashtable");
 934
 935                                 a = js->value;
 936
 937                                 if (!js->header.vftbl)
 938                                         /* vftbl of javastring is NULL */
 939                                         js->header.vftbl = class_java_lang_String->vftbl;
 940
 941                                 if (!a->header.objheader.vftbl)
 942                                         /* vftbl of character-array is NULL */
 943                                         a->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
 944
 945                                 /* follow link in external hash chain */
 946                                 s = s->hashlink;
 947                         }
 948                 }
 949         }
 950 }
 951
 952
 953 /************************* function: u2_utflength ***************************
 954
 955         returns the utf length in bytes of a u2 array
 956
 957 *****************************************************************************/
 958
 959 u4 u2_utflength(u2 *text, u4 u2_length)
 960 {
 961         u4 result_len =  0;  /* utf length in bytes  */
 962         u2 ch;               /* current unicode character */
 963         u4 len;
 964
 965         for (len = 0; len < u2_length; len++) {
 966                 /* next unicode character */
 967                 ch = *text++;
 968
 969                 /* determine bytes required to store unicode character as utf */
 970                 if (ch && (ch < 0x80))
 971                         result_len++;
 972                 else if (ch < 0x800)
 973                         result_len += 2;
 974                 else
 975                         result_len += 3;
 976         }
 977
 978     return result_len;
 979 }
 980
 981
 982 /********************* function: utf_new_u2 ***********************************
 983
 984         make utf symbol from u2 array,
 985         if isclassname is true '.' is replaced by '/'
 986
 987 *******************************************************************************/
 988
 989 utf *utf_new_u2(u2 *unicode_pos, u4 unicode_length, bool isclassname)
 990 {
 991         char *buffer; /* memory buffer for  unicode characters */
 992         char *pos;    /* pointer to current position in buffer */
 993         u4 left;      /* unicode characters left */
 994         u4 buflength; /* utf length in bytes of the u2 array  */
 995         utf *result;  /* resulting utf-string */
 996         int i;
 997
 998         /* determine utf length in bytes and allocate memory */
 999         /* printf("utf_new_u2: unicode_length=%d\n",unicode_length);            */
1000         buflength = u2_utflength(unicode_pos, unicode_length);
1001         buffer    = MNEW(char, buflength);
1002
1003         left = buflength;
1004         pos  = buffer;
1005
1006         for (i = 0; i++ < unicode_length; unicode_pos++) {
1007                 /* next unicode character */
1008                 u2 c = *unicode_pos;
1009
1010                 if ((c != 0) && (c < 0x80)) {
1011                         /* 1 character */
1012                         left--;
1013                 if ((int) left < 0) break;
1014                         /* convert classname */
1015                         if (isclassname && c == '.')
1016                                 *pos++ = '/';
1017                         else
1018                                 *pos++ = (char) c;
1019
1020                 } else if (c < 0x800) {
1021                         /* 2 characters */
1022                 unsigned char high = c >> 6;
1023                 unsigned char low  = c & 0x3F;
1024                         left = left - 2;
1025                 if ((int) left < 0) break;
1026                 *pos++ = high | 0xC0;
1027                 *pos++ = low  | 0x80;
1028
1029                 } else {
1030                 /* 3 characters */
1031                 char low  = c & 0x3f;
1032                 char mid  = (c >> 6) & 0x3F;
1033                 char high = c >> 12;
1034                         left = left - 3;
1035                 if ((int) left < 0) break;
1036                 *pos++ = high | 0xE0;
1037                 *pos++ = mid  | 0x80;
1038                 *pos++ = low  | 0x80;
1039                 }
1040         }
1041
1042         /* insert utf-string into symbol-table */
1043         result = utf_new(buffer,buflength);
1044
1045         MFREE(buffer, char, buflength);
1046
1047         return result;
1048 }
1049
1050
1051 /********************* function: javastring_toutf *****************************
1052
1053         make utf symbol from javastring
1054
1055 *******************************************************************************/
1056
1057 utf *javastring_toutf(java_lang_String *string, bool isclassname)
1058 {
1059         java_lang_String *str = (java_lang_String *) string;
1060
1061 /*      printf("javastring_toutf offset: %d, len %d\n",str->offset, str->count); */
1062 /*      fflush(stdout); */
1063
1064         return utf_new_u2(str->value->data + str->offset, str->count, isclassname);
1065 }
1066
1067
1068 /********************* function: literalstring_u2 *****************************
1069
1070     searches for the javastring with the specified u2-array in
1071     the string hashtable, if there is no such string a new one is
1072     created
1073
1074     if copymode is true a copy of the u2-array is made
1075
1076 *******************************************************************************/
1077
1078 java_objectheader *literalstring_u2(java_chararray *a, u4 length, u4 offset,
1079                                                                         bool copymode)
1080 {
1081     literalstring *s;                /* hashtable element */
1082     java_lang_String *js;            /* u2-array wrapped in javastring */
1083     java_chararray *stringdata;      /* copy of u2-array */
1084     u4 key;
1085     u4 slot;
1086     u2 i;
1087
1088 /* #define DEBUG_LITERALSTRING_U2 */
1089 #ifdef DEBUG_LITERALSTRING_U2
1090     printf("literalstring_u2: length=%d, offset=%d\n", length, offset);
1091         fflush(stdout);
1092 #endif
1093
1094     /* find location in hashtable */
1095     key  = unicode_hashkey(a->data + offset, length);
1096     slot = key & (string_hash.size - 1);
1097     s    = string_hash.ptr[slot];
1098
1099     while (s) {
1100                 js = (java_lang_String *) s->string;
1101
1102                 if (length == js->count) {
1103                         /* compare text */
1104                         for (i = 0; i < length; i++) {
1105                                 if (a->data[offset + i] != js->value->data[i])
1106                                         goto nomatch;
1107                         }
1108
1109                         /* string already in hashtable, free memory */
1110                         if (!copymode)
1111                                 mem_free(a, sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10);
1112
1113 #ifdef DEBUG_LITERALSTRING_U2
1114                         printf("literalstring_u2: foundentry at %p\n", js);
1115                         utf_display(javastring_toutf(js, 0));
1116                         printf("\n\n");
1117                         fflush(stdout);
1118 #endif
1119                         return (java_objectheader *) js;
1120                 }
1121
1122         nomatch:
1123                 /* follow link in external hash chain */
1124                 s = s->hashlink;
1125     }
1126
1127     if (copymode) {
1128                 /* create copy of u2-array for new javastring */
1129                 u4 arraysize = sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10;
1130                 stringdata = mem_alloc(arraysize);
1131 /*              memcpy(stringdata, a, arraysize); */
1132                 memcpy(&(stringdata->header), &(a->header), sizeof(java_arrayheader));
1133                 memcpy(&(stringdata->data), &(a->data) + offset, sizeof(u2) * (length - 1) + 10);
1134
1135     } else {
1136                 stringdata = a;
1137         }
1138
1139     /* location in hashtable found, complete arrayheader */
1140     stringdata->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1141     stringdata->header.size = length;
1142
1143         /* if we use eager loading, we have to check loaded String class */
1144         if (opt_eager) {
1145                 class_java_lang_String =
1146                         class_new_intern(utf_new_char("java/lang/String"));
1147
1148                 if (!class_load(class_java_lang_String))
1149                         return NULL;
1150
1151                 list_addfirst(&unlinkedclasses, class_java_lang_String);
1152         }
1153
1154         /* create new javastring */
1155         js = NEW(java_lang_String);
1156 #if defined(USE_THREADS) && defined(NATIVE_THREADS)
1157         initObjectLock(&js->header);
1158 #endif
1159         js->header.vftbl = class_java_lang_String->vftbl;
1160         js->value  = stringdata;
1161         js->offset = 0;
1162         js->count  = length;
1163
1164 #ifdef DEBUG_LITERALSTRING_U2
1165         printf("literalstring_u2: newly created at %p\n", js);
1166         utf_display(javastring_toutf(js, 0));
1167         printf("\n\n");
1168         fflush(stdout);
1169 #endif
1170
1171         /* create new literalstring */
1172         s = NEW(literalstring);
1173         s->hashlink = string_hash.ptr[slot];
1174         s->string   = (java_objectheader *) js;
1175         string_hash.ptr[slot] = s;
1176
1177         /* update number of hashtable entries */
1178         string_hash.entries++;
1179
1180         /* reorganization of hashtable */
1181         if (string_hash.entries > (string_hash.size * 2)) {
1182                 /* reorganization of hashtable, average length of
1183                    the external chains is approx. 2                */
1184
1185                 u4 i;
1186                 literalstring *s;
1187                 hashtable newhash; /* the new hashtable */
1188
1189                 /* create new hashtable, double the size */
1190                 init_hashtable(&newhash, string_hash.size * 2);
1191                 newhash.entries = string_hash.entries;
1192
1193                 /* transfer elements to new hashtable */
1194                 for (i = 0; i < string_hash.size; i++) {
1195                         s = string_hash.ptr[i];
1196                         while (s) {
1197                                 literalstring *nexts = s->hashlink;
1198                                 js   = (java_lang_String *) s->string;
1199                                 slot = unicode_hashkey(js->value->data, js->count) & (newhash.size - 1);
1200
1201                                 s->hashlink = newhash.ptr[slot];
1202                                 newhash.ptr[slot] = s;
1203
1204                                 /* follow link in external hash chain */
1205                                 s = nexts;
1206                         }
1207                 }
1208
1209                 /* dispose old table */
1210                 MFREE(string_hash.ptr, void*, string_hash.size);
1211                 string_hash = newhash;
1212         }
1213
1214         return (java_objectheader *) js;
1215 }
1216
1217
1218 /******************** Function: literalstring_new *****************************
1219
1220     creates a new javastring with the text of the utf-symbol
1221     and inserts it into the string hashtable
1222
1223 *******************************************************************************/
1224
1225 java_objectheader *literalstring_new(utf *u)
1226 {
1227     char *utf_ptr = u->text;         /* pointer to current unicode character in utf string */
1228     u4 utflength  = utf_strlen(u);   /* length of utf-string if uncompressed */
1229     java_chararray *a;               /* u2-array constructed from utf string */
1230     u4 i;
1231
1232     /* allocate memory */
1233     a = mem_alloc(sizeof(java_chararray) + sizeof(u2) * (utflength - 1) + 10);
1234
1235     /* convert utf-string to u2-array */
1236     for (i = 0; i < utflength; i++)
1237                 a->data[i] = utf_nextu2(&utf_ptr);
1238
1239     return literalstring_u2(a, utflength, 0, false);
1240 }
1241
1242
1243 /********************** function: literalstring_free **************************
1244
1245         removes a javastring from memory
1246
1247 ******************************************************************************/
1248
1249 void literalstring_free(java_objectheader* sobj)
1250 {
1251         java_lang_String *s = (java_lang_String *) sobj;
1252         java_chararray *a = s->value;
1253
1254         /* dispose memory of java.lang.String object */
1255         FREE(s, java_lang_String);
1256
1257         /* dispose memory of java-characterarray */
1258         FREE(a, sizeof(java_chararray) + sizeof(u2) * (a->header.size - 1)); /* +10 ?? */
1259 }
1260
1261
1262 void copy_vftbl(vftbl_t **dest, vftbl_t *src)
1263 {
1264     *dest = src;
1265 #if 0
1266     /* XXX this kind of copying does not work (in the general
1267      * case). The interface tables would have to be copied, too. I
1268      * don't see why we should make a copy anyway. -Edwin
1269      */
1270         *dest = mem_alloc(sizeof(vftbl) + sizeof(methodptr)*(src->vftbllength-1));
1271         memcpy(*dest, src, sizeof(vftbl) - sizeof(methodptr));
1272         memcpy(&(*dest)->table, &src->table, src->vftbllength * sizeof(methodptr));
1273 #endif
1274 }
1275
1276
1277 /******************************************************************************************
1278
1279         creates method signature (excluding return type) from array of
1280         class-objects representing the parameters of the method
1281
1282 *******************************************************************************************/
1283
1284
1285 utf *create_methodsig(java_objectarray* types, char *retType)
1286 {
1287     char *buffer;       /* buffer for building the desciptor */
1288     char *pos;          /* current position in buffer */
1289     utf *result;        /* the method signature */
1290     u4 buffer_size = 3; /* minimal size=3: room for parenthesis and returntype */
1291     u4 i, j;
1292
1293     if (!types) return NULL;
1294
1295     /* determine required buffer-size */
1296     for (i = 0; i < types->header.size; i++) {
1297                 classinfo *c = (classinfo *) types->data[i];
1298                 buffer_size  = buffer_size + c->name->blength + 2;
1299     }
1300
1301     if (retType) buffer_size += strlen(retType);
1302
1303     /* allocate buffer */
1304     buffer = MNEW(char, buffer_size);
1305     pos    = buffer;
1306
1307     /* method-desciptor starts with parenthesis */
1308     *pos++ = '(';
1309
1310     for (i = 0; i < types->header.size; i++) {
1311                 char ch;
1312
1313                 /* current argument */
1314             classinfo *c = (classinfo *) types->data[i];
1315
1316             /* current position in utf-text */
1317             char *utf_ptr = c->name->text;
1318
1319             /* determine type of argument */
1320             if ((ch = utf_nextu2(&utf_ptr)) == '[') {
1321                 /* arrayclass */
1322                 for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1323                                 *pos++ = *utf_ptr; /* copy text */
1324                         }
1325
1326             } else {
1327                         /* check for primitive types */
1328                         for (j = 0; j < PRIMITIVETYPE_COUNT; j++) {
1329                                 char *utf_pos   = utf_ptr - 1;
1330                                 char *primitive = primitivetype_table[j].wrapname;
1331
1332                                 /* compare text */
1333                                 while (utf_pos < utf_end(c->name)) {
1334                                         if (*utf_pos++ != *primitive++) goto nomatch;
1335                                 }
1336
1337                                 /* primitive type found */
1338                                 *pos++ = primitivetype_table[j].typesig;
1339                                 goto next_type;
1340
1341                         nomatch:
1342                                 ;
1343                         }
1344
1345                         /* no primitive type and no arrayclass, so must be object */
1346                         *pos++ = 'L';
1347
1348                         /* copy text */
1349                         for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1350                                 *pos++ = *utf_ptr;
1351                         }
1352
1353                         *pos++ = ';';
1354
1355                 next_type:
1356                         ;
1357                 }
1358     }
1359
1360     *pos++ = ')';
1361
1362     if (retType) {
1363                 for (i = 0; i < strlen(retType); i++) {
1364                         *pos++ = retType[i];
1365                 }
1366     }
1367
1368     /* create utf-string */
1369     result = utf_new(buffer, (pos - buffer));
1370     MFREE(buffer, char, buffer_size);
1371
1372     return result;
1373 }
1374
1375
1376 /******************************************************************************************
1377
1378         retrieve the next argument or returntype from a descriptor
1379         and return the corresponding class
1380
1381 *******************************************************************************************/
1382
1383 classinfo *get_type(char **utf_ptr,char *desc_end, bool skip)
1384 {
1385     classinfo *c = class_from_descriptor(*utf_ptr,desc_end,utf_ptr,
1386                                          (skip) ? CLASSLOAD_SKIP : CLASSLOAD_LOAD);
1387     if (!c)
1388         /* unknown type */
1389         panic("illegal descriptor");
1390
1391     if (skip) return NULL;
1392
1393     use_class_as_object(c);
1394     return c;
1395 }
1396
1397
1398 /* get_parametertypes **********************************************************
1399
1400    use the descriptor of a method to generate a java/lang/Class array
1401    which contains the classes of the parametertypes of the method
1402
1403 *******************************************************************************/
1404
1405 java_objectarray* get_parametertypes(methodinfo *m)
1406 {
1407     utf  *descr    =  m->descriptor;    /* method-descriptor */
1408     char *utf_ptr  =  descr->text;      /* current position in utf-text */
1409     char *desc_end =  utf_end(descr);   /* points behind utf string     */
1410     java_objectarray* result;
1411     int parametercount = 0;
1412     int i;
1413
1414     /* skip '(' */
1415     utf_nextu2(&utf_ptr);
1416
1417     /* determine number of parameters */
1418     while (*utf_ptr != ')') {
1419         get_type(&utf_ptr, desc_end, true);
1420                 parametercount++;
1421     }
1422
1423     /* create class-array */
1424     result = builtin_anewarray(parametercount, class_java_lang_Class);
1425
1426     utf_ptr = descr->text;
1427     utf_nextu2(&utf_ptr);
1428
1429     /* get returntype classes */
1430     for (i = 0; i < parametercount; i++)
1431             result->data[i] =
1432                         (java_objectheader *) get_type(&utf_ptr, desc_end, false);
1433
1434     return result;
1435 }
1436
1437
1438 /* get_exceptiontypes **********************************************************
1439
1440    get the exceptions which can be thrown by a method
1441
1442 *******************************************************************************/
1443
1444 java_objectarray* get_exceptiontypes(methodinfo *m)
1445 {
1446     u2 excount;
1447     u2 i;
1448     java_objectarray *result;
1449
1450         excount = m->thrownexceptionscount;
1451
1452     /* create class-array */
1453     result = builtin_anewarray(excount, class_java_lang_Class);
1454
1455     for (i = 0; i < excount; i++) {
1456                 java_objectheader *o = (java_objectheader *) (m->thrownexceptions[i]);
1457                 use_class_as_object((classinfo *) o);
1458                 result->data[i] = o;
1459     }
1460
1461     return result;
1462 }
1463
1464
1465
1466
1467
1468 /******************************************************************************************
1469
1470         get the returntype class of a method
1471
1472 *******************************************************************************************/
1473
1474 classinfo *get_returntype(methodinfo *m)
1475 {
1476         char *utf_ptr;   /* current position in utf-text */
1477         char *desc_end;  /* points behind utf string     */
1478         utf *desc = m->descriptor; /* method-descriptor  */
1479
1480         utf_ptr  = desc->text;
1481         desc_end = utf_end(desc);
1482
1483         /* ignore parametertypes */
1484         while ((utf_ptr<desc_end) && utf_nextu2(&utf_ptr)!=')')
1485                 /* skip */ ;
1486
1487         return get_type(&utf_ptr,desc_end, false);
1488 }
1489
1490
1491 /*****************************************************************************/
1492 /*****************************************************************************/
1493
1494
1495 /*--------------------------------------------------------*/
1496 void printNativeCall(nativeCall nc) {
1497   int i,j;
1498
1499   printf("\n%s's Native Methods call:\n",nc.classname); fflush(stdout);
1500   for (i=0; i<nc.methCnt; i++) {
1501       printf("\tMethod=%s %s\n",nc.methods[i].methodname, nc.methods[i].descriptor);fflush(stdout);
1502
1503     for (j=0; j<nc.callCnt[i]; j++) {
1504         printf("\t\t<%i,%i>aCalled = %s %s %s\n",i,j,
1505         nc.methods[i].methodCalls[j].classname,
1506         nc.methods[i].methodCalls[j].methodname,
1507         nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1508       }
1509     }
1510   printf("-+++++--------------------\n");fflush(stdout);
1511 }
1512
1513 /*--------------------------------------------------------*/
1514 void printCompNativeCall(nativeCompCall nc) {
1515   int i,j;
1516   printf("printCompNativeCall BEGIN\n");fflush(stdout);
1517   printf("\n%s's Native Comp Methods call:\n",nc.classname->text);fflush(stdout);
1518   utf_display(nc.classname); fflush(stdout);
1519
1520   for (i=0; i<nc.methCnt; i++) {
1521     printf("\tMethod=%s %s\n",nc.methods[i].methodname->text,nc.methods[i].descriptor->text);fflush(stdout);
1522     utf_display(nc.methods[i].methodname); fflush(stdout);
1523     utf_display(nc.methods[i].descriptor);fflush(stdout);
1524     printf("\n");fflush(stdout);
1525
1526     for (j=0; j<nc.callCnt[i]; j++) {
1527       printf("\t\t<%i,%i>bCalled = ",i,j);fflush(stdout);
1528         utf_display(nc.methods[i].methodCalls[j].classname);fflush(stdout);
1529         utf_display(nc.methods[i].methodCalls[j].methodname); fflush(stdout);
1530         utf_display(nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1531         printf("\n");fflush(stdout);
1532       }
1533     }
1534 printf("---------------------\n");fflush(stdout);
1535 }
1536
1537
1538 /*--------------------------------------------------------*/
1539 classMeth findNativeMethodCalls(utf *c, utf *m, utf *d )
1540 {
1541     int i = 0;
1542     int j = 0;
1543     int cnt = 0;
1544     classMeth mc;
1545     mc.i_class = i;
1546     mc.j_method = j;
1547     mc.methCnt = cnt;
1548
1549     return mc;
1550 }
1551
1552 /*--------------------------------------------------------*/
1553 nativeCall* findNativeClassCalls(char *aclassname ) {
1554 int i;
1555
1556 for (i=0;i<NATIVECALLSSIZE; i++) {
1557    /* convert table to utf later to speed up search */
1558    if (strcmp(nativeCalls[i].classname, aclassname) == 0)
1559         return &nativeCalls[i];
1560    }
1561
1562 return NULL;
1563 }
1564 /*--------------------------------------------------------*/
1565 /*--------------------------------------------------------*/
1566 void utfNativeCall(nativeCall nc, nativeCompCall *ncc) {
1567   int i,j;
1568
1569
1570   ncc->classname = utf_new_char(nc.classname);
1571   ncc->methCnt = nc.methCnt;
1572
1573   for (i=0; i<nc.methCnt; i++) {
1574     ncc->methods[i].methodname = utf_new_char(nc.methods[i].methodname);
1575     ncc->methods[i].descriptor = utf_new_char(nc.methods[i].descriptor);
1576     ncc->callCnt[i] = nc.callCnt[i];
1577
1578     for (j=0; j<nc.callCnt[i]; j++) {
1579
1580         ncc->methods[i].methodCalls[j].classname  = utf_new_char(nc.methods[i].methodCalls[j].classname);
1581
1582         if (strcmp("", nc.methods[i].methodCalls[j].methodname) != 0) {
1583           ncc->methods[i].methodCalls[j].methodname = utf_new_char(nc.methods[i].methodCalls[j].methodname);
1584           ncc->methods[i].methodCalls[j].descriptor = utf_new_char(nc.methods[i].methodCalls[j].descriptor);
1585           }
1586         else {
1587           ncc->methods[i].methodCalls[j].methodname = NULL;
1588           ncc->methods[i].methodCalls[j].descriptor = NULL;
1589           }
1590       }
1591     }
1592 }
1593
1594
1595
1596 /*--------------------------------------------------------*/
1597
1598 bool natcall2utf(bool natcallcompdone) {
1599 int i;
1600
1601 if (natcallcompdone)
1602         return true;
1603
1604 for (i=0;i<NATIVECALLSSIZE; i++) {
1605    utfNativeCall  (nativeCalls[i], &nativeCompCalls[i]);
1606    }
1607
1608 return true;
1609 }
1610
1611 /*--------------------------------------------------------*/
1612
1613
1614 java_objectarray *builtin_asm_createclasscontextarray(classinfo **end, classinfo **start)
1615 {
1616 #if defined(__GNUC__)
1617 #warning platform dependend
1618 #endif
1619         java_objectarray *tmpArray;
1620         int i;
1621         classinfo **current;
1622         classinfo *c;
1623         size_t size;
1624
1625         size = (((size_t) start) - ((size_t) end)) / sizeof(classinfo*);
1626
1627         /*printf("end %p, start %p, size %ld\n",end,start,size);*/
1628         if (!class_java_lang_Class)
1629                 class_java_lang_Class = class_new(utf_new_char("java/lang/Class"));
1630
1631         if (!class_java_lang_SecurityManager)
1632                 class_java_lang_SecurityManager =
1633                         class_new(utf_new_char("java/lang/SecurityManager"));
1634
1635         if (size > 0) {
1636                 if (start == class_java_lang_SecurityManager) {
1637                         size--;
1638                         start--;
1639                 }
1640         }
1641
1642         tmpArray =
1643                 builtin_newarray(size, class_array_of(class_java_lang_Class)->vftbl);
1644
1645         for(i = 0, current = start; i < size; i++, current--) {
1646                 c = *current;
1647                 /*              printf("%d\n",i);
1648                 utf_display(c->name);*/
1649                 use_class_as_object(c);
1650                 tmpArray->data[i] = (java_objectheader *) c;
1651         }
1652
1653         return tmpArray;
1654 }
1655
1656
1657 java_lang_ClassLoader *builtin_asm_getclassloader(classinfo **end, classinfo **start)
1658 {
1659 #if defined(__GNUC__)
1660 #warning platform dependend
1661 #endif
1662         int i;
1663         classinfo **current;
1664         classinfo *c;
1665         classinfo *privilegedAction;
1666         size_t size;
1667
1668         size = (((size_t) start) - ((size_t) end)) / sizeof(classinfo*);
1669
1670         /*      log_text("builtin_asm_getclassloader");
1671         printf("end %p, start %p, size %ld\n",end,start,size);*/
1672
1673         if (!class_java_lang_SecurityManager)
1674                 class_java_lang_SecurityManager =
1675                         class_new(utf_new_char("java/lang/SecurityManager"));
1676
1677         if (size > 0) {
1678                 if (start == class_java_lang_SecurityManager) {
1679                         size--;
1680                         start--;
1681                 }
1682         }
1683
1684         privilegedAction=class_new(utf_new_char("java/security/PrivilegedAction"));
1685
1686         for(i = 0, current = start; i < size; i++, current--) {
1687                 c = *current;
1688
1689                 if (c == privilegedAction)
1690                         return NULL;
1691
1692                 if (c->classloader)
1693                         return (java_lang_ClassLoader *) c->classloader;
1694         }
1695
1696         return NULL;
1697
1698         /*
1699         log_text("Java_java_lang_VMSecurityManager_currentClassLoader");
1700         init_systemclassloader();
1701
1702         return SystemClassLoader;*/
1703 }
1704
1705
1706 /*
1707  * These are local overrides for various environment variables in Emacs.
1708  * Please do not remove this and leave it at the end of the file, where
1709  * Emacs will automagically detect them.
1710  * ---------------------------------------------------------------------
1711  * Local variables:
1712  * mode: c
1713  * indent-tabs-mode: t
1714  * c-basic-offset: 4
1715  * tab-width: 4
1716  * End:
1717  */