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 930 2004-03-02 21:18:23Z jowenn $
  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 "jni.h"
  51 #include "native.h"
  52 #include "nativetypes.hh"
  53 #include "builtin.h"
  54 #include "asmpart.h"
  55 #include "tables.h"
  56 #include "loader.h"
  57 #include "jni.h"
  58 #include "toolbox/loging.h"
  59 #include "toolbox/memory.h"
  60 #include "threads/thread.h"
  61 #include "threads/threadio.h"
  62 #include "threads/locks.h"
  63
  64 /* Include files for IO functions */
  65
  66 #include <fcntl.h>
  67 #include <dirent.h>
  68 #include <sys/types.h>
  69 #ifdef _OSF_SOURCE
  70 #include <sys/mode.h>
  71 #endif
  72 #include <sys/stat.h>
  73
  74 #include "threads/threadio.h"
  75
  76 /* searchpath for classfiles */
  77 char *classpath;
  78
  79 /* for java-string to char conversion */
  80 #define MAXSTRINGSIZE 1000
  81
  82 /******************** systemclasses required for native methods ***************/
  83
  84 classinfo *class_java_lang_Class;
  85 classinfo *class_java_lang_VMClass;
  86 methodinfo *method_vmclass_init;
  87 /* static classinfo *class_java_lang_Cloneable=0; */ /* now in global.h */
  88 classinfo *class_java_lang_CloneNotSupportedException;
  89 classinfo *class_java_lang_System;
  90 classinfo *class_java_lang_ClassLoader;
  91 classinfo *class_gnu_java_lang_SystemClassLoader;
  92 classinfo *class_java_lang_NoClassDefFoundError;
  93 classinfo *class_java_lang_ClassNotFoundException;
  94 classinfo *class_java_lang_LinkageError;
  95 classinfo *class_java_lang_InstantiationException;
  96 classinfo *class_java_lang_NoSuchMethodError;
  97 classinfo *class_java_lang_NoSuchFieldError;
  98 classinfo *class_java_lang_ClassFormatError;
  99 classinfo *class_java_lang_IllegalArgumentException;
 100 classinfo *class_java_lang_ArrayIndexOutOfBoundsException;
 101 classinfo *class_java_lang_NoSuchFieldException;
 102 classinfo *class_java_io_SyncFailedException;
 103 classinfo *class_java_io_IOException;
 104 classinfo *class_java_io_FileNotFoundException;
 105 classinfo *class_java_io_UnixFileSystem;
 106 classinfo *class_java_security_PrivilegedActionException;
 107 classinfo *class_java_net_UnknownHostException;
 108 classinfo *class_java_net_SocketException;
 109 classinfo *class_java_lang_NoSuchMethodException;
 110 classinfo *class_java_lang_Double;
 111 classinfo *class_java_lang_Float;
 112 classinfo *class_java_lang_Long;
 113 classinfo *class_java_lang_Byte;
 114 classinfo *class_java_lang_Short;
 115 classinfo *class_java_lang_Boolean;
 116 classinfo *class_java_lang_Void;
 117 classinfo *class_java_lang_Character;
 118 classinfo *class_java_lang_Integer;
 119
 120 /* the system classloader object */
 121 struct java_lang_ClassLoader *SystemClassLoader = NULL;
 122
 123 /* for raising exceptions from native methods */
 124 THREADSPECIFIC java_objectheader* _exceptionptr = NULL;
 125
 126 /************* use classinfo structure as java.lang.Class object **************/
 127
 128 void use_class_as_object(classinfo *c)
 129 {
 130         vftbl *vt;
 131 /*      vftbl *newtbl; */
 132
 133         if (!class_java_lang_Class)
 134                 class_java_lang_Class = class_new(utf_new_char ("java/lang/Class"));
 135
 136         vt = class_java_lang_Class->vftbl;
 137
 138
 139         if (!c->classvftbl) {
 140                 c->classvftbl = true;
 141
 142                 /*                copy_vftbl(&newtbl, vt);
 143                                                   newtbl->class = c->header.vftbl->class;
 144                                                   newtbl->baseval = c->header.vftbl->baseval;
 145                                                   newtbl->diffval = c->header.vftbl->diffval;
 146                                                   c->header.vftbl = newtbl;*/
 147
 148                 c->header.vftbl = class_java_lang_Class->vftbl;
 149
 150                 if (!class_java_lang_VMClass) {
 151                         loader_load_sysclass(&class_java_lang_VMClass,
 152                                                                  utf_new_char("java/lang/VMClass"));
 153
 154                         method_vmclass_init =
 155                                 class_findmethod(class_java_lang_VMClass,
 156                                                                  utf_new_char("<init>"),
 157                                                                  utf_new_char("(Lgnu/classpath/RawData;)V"));
 158
 159                         if (method_vmclass_init == 0) {
 160                                 class_showmethods(class_java_lang_VMClass);
 161                                 panic("Needed class initializer for VMClass could not be found");
 162                         }
 163                 }
 164                 {
 165                         java_objectheader *vmo = builtin_new(class_java_lang_VMClass);
 166
 167                         if (!vmo) panic("Error while creating instance of java/lang/VMClass");
 168                         asm_calljavafunction(method_vmclass_init, vmo, c, NULL, NULL);
 169                         c->vmClass = (java_lang_VMClass *) vmo;
 170                         /*log_text("VMCLASS has been attached");*/
 171                 }
 172         }
 173 }
 174
 175
 176 /*************************** include native methods ***************************/
 177
 178 #ifdef USE_GTK
 179 #include "nat/GdkGraphics.c"
 180 #include "nat/GtkComponentPeer.c"
 181 #include "nat/GdkPixbufDecoder.c"
 182 #include "nat/GtkScrollPanePeer.c"
 183 #include "nat/GtkFileDialogPeer.c"
 184 #include "nat/GtkLabelPeer.c"
 185 #endif
 186
 187
 188 /************************** tables for methods ********************************/
 189
 190 #undef JOWENN_DEBUG
 191 #undef JOWENN_DEBUG1
 192
 193 /* table for locating native methods */
 194 static struct nativeref {
 195         char *classname;
 196         char *methodname;
 197         char *descriptor;
 198         bool isstatic;
 199         functionptr func;
 200 } nativetable [] = {
 201
 202 #include "nativetable.hh"
 203
 204 };
 205
 206
 207 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
 208
 209 /* table for fast string comparison */
 210 static struct nativecompref {
 211         utf *classname;
 212         utf *methodname;
 213         utf *descriptor;
 214         bool isstatic;
 215         functionptr func;
 216 } nativecomptable [NATIVETABLESIZE];
 217
 218 /* string comparsion table initialized */
 219 static bool nativecompdone = false;
 220
 221
 222 /******************************************************************************/
 223 /******************************************************************************/
 224 #include "natcalls.h"
 225
 226 /* string call comparison table initialized */
 227
 228 /******************************************************************************/
 229 /******************************************************************************/
 230
 231 /*--------------- native method calls & classes used -------------------------*/
 232
 233
 234
 235 /* throw some loader exceptions */
 236
 237 void throw_noclassdeffounderror_message(utf* classname)
 238 {
 239         if (!class_java_lang_NoClassDefFoundError) {
 240                 panic("java.lang.NoClassDefFoundError not found. Maybe wrong classpath?");
 241         }
 242
 243         /* throws a NoClassDefFoundError with message */
 244         *exceptionptr = native_new_and_init_string(class_java_lang_NoClassDefFoundError,
 245                                                                                           javastring_new(classname));
 246 }
 247
 248
 249 void throw_linkageerror_message(utf* classname)
 250 {
 251         if (!class_java_lang_LinkageError) {
 252                 panic("java.lang.LinkageError not found. Maybe wrong classpath?");
 253         }
 254
 255         /* throws a LinkageError with message */
 256         *exceptionptr = native_new_and_init_string(class_java_lang_LinkageError,
 257                                                                                           javastring_new(classname));
 258 }
 259
 260
 261 void throw_exception_message(char *classname, char *message)
 262 {
 263         classinfo *c = class_new(utf_new_char(classname));
 264
 265         if (!c->linked)
 266                 panic("...");
 267
 268         *exceptionptr = native_new_and_init_string(c,
 269                                                                                            javastring_new_char(message));
 270 }
 271
 272
 273 /*********************** function: native_loadclasses **************************
 274
 275         load classes required for native methods
 276
 277 *******************************************************************************/
 278
 279 void native_loadclasses()
 280 {
 281         static int classesLoaded=0; /*temporary hack JoWenn*/
 282         if (classesLoaded) return;
 283         classesLoaded = 1;
 284 /*      log_text("loadclasses entered");*/
 285
 286
 287         /*class_java_lang_System =*/
 288         (void) class_new(utf_new_char("java/lang/VMClass"));/*JoWenn*/
 289         (void) class_new(utf_new_char("java/lang/Class"));/*JoWenn*/
 290
 291         /* class_new adds the class to the list of classes to be loaded */
 292         if (!class_java_lang_Cloneable)
 293                 class_java_lang_Cloneable =
 294                         class_new(utf_new_char("java/lang/Cloneable"));
 295 /*      log_text("loadclasses: class_java_lang_Cloneable has been initialized");*/
 296         class_java_lang_CloneNotSupportedException =
 297                 class_new(utf_new_char("java/lang/CloneNotSupportedException"));
 298         if (!class_java_lang_Class)
 299                 class_java_lang_Class =
 300                         class_new(utf_new_char("java/lang/Class"));
 301         class_java_io_IOException =
 302                 class_new(utf_new_char("java/io/IOException"));
 303         class_java_io_FileNotFoundException =
 304                 class_new(utf_new_char("java/io/FileNotFoundException"));
 305         class_java_lang_NoClassDefFoundError =
 306                 class_new(utf_new_char("java/lang/NoClassDefFoundError"));
 307         class_java_lang_ClassNotFoundException =
 308                 class_new(utf_new_char("java/lang/ClassNotFoundException"));
 309         class_java_lang_LinkageError =
 310                 class_new(utf_new_char("java/lang/LinkageError"));
 311         class_java_lang_InstantiationException =
 312                 class_new(utf_new_char("java/lang/InstantiationException"));
 313         class_java_lang_NoSuchMethodError =
 314                 class_new(utf_new_char("java/lang/NoSuchMethodError"));
 315         class_java_lang_NoSuchFieldError =
 316                 class_new(utf_new_char("java/lang/NoSuchFieldError"));
 317         class_java_lang_ClassFormatError =
 318                 class_new(utf_new_char("java/lang/ClassFormatError"));
 319         class_java_io_SyncFailedException =
 320                 class_new(utf_new_char("java/io/SyncFailedException"));
 321
 322 /*      log_text("native_loadclasses: class_new(\"java/lang/ClassLoader\")");           */
 323         class_java_lang_ClassLoader =
 324                 class_new(utf_new_char("java/lang/ClassLoader"));
 325         class_gnu_java_lang_SystemClassLoader =
 326                 class_new(utf_new_char("gnu/java/lang/SystemClassLoader"));
 327
 328 /*      log_text("native_loadclasses: class_new(\"java/security/PrivilegedActionException\")");         */
 329         class_java_security_PrivilegedActionException =
 330                 class_new(utf_new_char("java/security/PrivilegedActionException"));
 331
 332         loader_load_sysclass(&class_java_net_UnknownHostException,
 333                                                  utf_new_char("java/net/UnknownHostException"));
 334         loader_load_sysclass(&class_java_net_SocketException,
 335                                                  utf_new_char("java/net/SocketException"));
 336
 337         class_java_lang_IllegalArgumentException =
 338                 class_new(utf_new_char("java/lang/IllegalArgumentException"));
 339         class_java_lang_ArrayIndexOutOfBoundsException =
 340                 class_new(utf_new_char("java/lang/ArrayIndexOutOfBoundsException"));
 341         class_java_lang_NoSuchFieldException =
 342                 class_new(utf_new_char("java/lang/NoSuchFieldException"));
 343         class_java_lang_NoSuchMethodException =
 344                 class_new(utf_new_char("java/lang/NoSuchMethodException"));
 345
 346         /* load classes for wrapping primitive types */
 347         class_java_lang_Double    = class_new(utf_new_char("java/lang/Double"));
 348         class_init(class_java_lang_Double);
 349
 350         class_java_lang_Float     = class_new(utf_new_char("java/lang/Float"));
 351         class_java_lang_Character =     class_new(utf_new_char("java/lang/Character"));
 352         class_java_lang_Integer   = class_new(utf_new_char("java/lang/Integer"));
 353         class_java_lang_Long      = class_new(utf_new_char("java/lang/Long"));
 354         class_java_lang_Byte      = class_new(utf_new_char("java/lang/Byte"));
 355         class_java_lang_Short     = class_new(utf_new_char("java/lang/Short"));
 356         class_java_lang_Boolean   = class_new(utf_new_char("java/lang/Boolean"));
 357         class_java_lang_Void      = class_new(utf_new_char("java/lang/Void"));
 358
 359         classesLoaded = 1;
 360 }
 361
 362
 363 /*************** adds a class to the vector of loaded classes ****************/
 364
 365 void systemclassloader_addclass(classinfo *c)
 366 {
 367         methodinfo *m;
 368
 369         /* find method addClass of java.lang.ClassLoader */
 370         m = class_resolvemethod(class_java_lang_ClassLoader,
 371                                                         utf_new_char("addClass"),
 372                                                         utf_new_char("(Ljava/lang/Class;)")
 373                                                         );
 374
 375         if (!m)
 376                 panic("warning: cannot initialize classloader");
 377
 378         /* prepare class to be passed as argument */
 379         use_class_as_object (c);
 380
 381         /* call 'addClass' */
 382         asm_calljavafunction(m,
 383                                                  (java_objectheader*) SystemClassLoader,
 384                                                  (java_objectheader*) c,
 385                                                  NULL,
 386                                                  NULL
 387                                                  );
 388 }
 389
 390
 391 /*************** adds a library to the vector of loaded libraries *************/
 392
 393 void systemclassloader_addlibrary(java_objectheader *o)
 394 {
 395         log_text("systemclassloader_addlibrary");
 396 }
 397
 398
 399 /*****************************************************************************
 400
 401         create systemclassloader object and initialize instance fields
 402
 403 ******************************************************************************/
 404
 405 void init_systemclassloader()
 406 {
 407         if (!SystemClassLoader) {
 408                 native_loadclasses();
 409                 log_text("Initializing new system class loader");
 410                 /* create object and call initializer */
 411                 SystemClassLoader = (java_lang_ClassLoader*) native_new_and_init(class_gnu_java_lang_SystemClassLoader);/*class_java_lang_ClassLoader);*/
 412
 413                 /* systemclassloader has no parent */
 414                 SystemClassLoader->parent      = NULL;
 415                 SystemClassLoader->initialized = true;
 416         }
 417         log_text("leaving system class loader");
 418 }
 419
 420
 421 /********************* add loaded library name  *******************************/
 422
 423 void systemclassloader_addlibname(java_objectheader *o)
 424 {
 425         methodinfo *m;
 426         jfieldID id;
 427
 428         m = class_resolvemethod(loader_load_sysclass(NULL, utf_new_char ("java/util/Vector")),
 429                                                         utf_new_char("addElement"),
 430                                                         utf_new_char("(Ljava/lang/Object;)V"));
 431
 432         if (!m) panic("cannot initialize classloader");
 433
 434         id = envTable.GetStaticFieldID(&env,
 435                                                                    class_java_lang_ClassLoader,
 436                                                                    "loadedLibraryNames",
 437                                                                    "Ljava/util/Vector;");
 438
 439         if (!id) panic("can not access ClassLoader");
 440
 441         asm_calljavafunction(m,
 442                                                  envTable.GetStaticObjectField(&env, class_java_lang_ClassLoader, id),
 443                                                  o,
 444                                                  NULL,
 445                                                  NULL);
 446 }
 447
 448
 449 /********************* function: native_setclasspath **************************/
 450
 451 void native_setclasspath(char *path)
 452 {
 453         /* set searchpath for classfiles */
 454         classpath = path;
 455 }
 456
 457
 458 /*********************** Function: native_findfunction *************************
 459
 460         Looks up a method (must have the same class name, method name, descriptor
 461         and 'static'ness) and returns a function pointer to it.
 462         Returns: function pointer or NULL (if there is no such method)
 463
 464         Remark: For faster operation, the names/descriptors are converted from C
 465                 strings to Unicode the first time this function is called.
 466
 467 *******************************************************************************/
 468
 469 functionptr native_findfunction(utf *cname, utf *mname,
 470                                                                 utf *desc, bool isstatic)
 471 {
 472         int i;
 473         /* entry of table for fast string comparison */
 474         struct nativecompref *n;
 475         /* for warning message if no function is found */
 476         char *buffer;
 477         int buffer_len;
 478
 479         isstatic = isstatic ? true : false;
 480
 481         if (!nativecompdone) {
 482                 for (i = 0; i < NATIVETABLESIZE; i++) {
 483                         nativecomptable[i].classname  =
 484                                 utf_new_char(nativetable[i].classname);
 485                         nativecomptable[i].methodname =
 486                                 utf_new_char(nativetable[i].methodname);
 487                         nativecomptable[i].descriptor =
 488                                 utf_new_char(nativetable[i].descriptor);
 489                         nativecomptable[i].isstatic   =
 490                                 nativetable[i].isstatic;
 491                         nativecomptable[i].func       =
 492                                 nativetable[i].func;
 493                 }
 494                 nativecompdone = true;
 495         }
 496
 497 #ifdef JOWENN_DEBUG
 498         buffer_len =
 499                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 500
 501         buffer = MNEW(char, buffer_len);
 502
 503         strcpy(buffer, "searching matching function in native table:");
 504         utf_sprint(buffer+strlen(buffer), mname);
 505         strcpy(buffer+strlen(buffer), ": ");
 506         utf_sprint(buffer+strlen(buffer), desc);
 507         strcpy(buffer+strlen(buffer), " for class ");
 508         utf_sprint(buffer+strlen(buffer), cname);
 509
 510         log_text(buffer);
 511
 512         MFREE(buffer, char, buffer_len);
 513 #endif
 514
 515         for (i = 0; i < NATIVETABLESIZE; i++) {
 516                 n = &(nativecomptable[i]);
 517
 518                 if (cname == n->classname && mname == n->methodname &&
 519                     desc == n->descriptor && isstatic == n->isstatic)
 520                         return n->func;
 521 #ifdef JOWENN_DEBUG
 522                         else {
 523                                 if (cname == n->classname && mname == n->methodname )  log_text("static and descriptor mismatch");
 524
 525                                 else {
 526                                         buffer_len =
 527                                           utf_strlen(n->classname) + utf_strlen(n->methodname) + utf_strlen(n->descriptor) + 64;
 528
 529                                         buffer = MNEW(char, buffer_len);
 530
 531                                         strcpy(buffer, "comparing with:");
 532                                         utf_sprint(buffer+strlen(buffer), n->methodname);
 533                                         strcpy (buffer+strlen(buffer), ": ");
 534                                         utf_sprint(buffer+strlen(buffer), n->descriptor);
 535                                         strcpy(buffer+strlen(buffer), " for class ");
 536                                         utf_sprint(buffer+strlen(buffer), n->classname);
 537
 538                                         log_text(buffer);
 539
 540                                         MFREE(buffer, char, buffer_len);
 541                                 }
 542                         }
 543 #endif
 544         }
 545
 546
 547         /* no function was found, display warning */
 548
 549         buffer_len =
 550                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 551
 552         buffer = MNEW(char, buffer_len);
 553
 554         strcpy(buffer, "warning: native function ");
 555         utf_sprint(buffer + strlen(buffer), mname);
 556         strcpy(buffer + strlen(buffer), ": ");
 557         utf_sprint(buffer + strlen(buffer), desc);
 558         strcpy(buffer + strlen(buffer), " not found in class ");
 559         utf_sprint(buffer + strlen(buffer), cname);
 560
 561         log_text(buffer);
 562
 563         MFREE(buffer, char, buffer_len);
 564
 565         exit(1);
 566
 567         /* keep compiler happy */
 568         return NULL;
 569 }
 570
 571
 572 /********************** function: javastring_new *******************************
 573
 574         creates a new object of type java/lang/String with the text of
 575         the specified utf8-string
 576
 577         return: pointer to the string or NULL if memory is exhausted.
 578
 579 *******************************************************************************/
 580
 581 /*  java_objectheader *javastring_new(utf *u) */
 582 java_lang_String *javastring_new(utf *u)
 583 {
 584         char *utf_ptr = u->text;        /* current utf character in utf string    */
 585         int utflength = utf_strlen(u);  /* length of utf-string if uncompressed   */
 586         java_lang_String *s;                /* result-string                          */
 587         java_chararray *a;
 588         s4 i;
 589
 590 /*      log_text("javastring_new");*/
 591
 592         s = (java_lang_String*) builtin_new(class_java_lang_String);
 593         a = builtin_newarray_char(utflength);
 594
 595         /* javastring or character-array could not be created */
 596         if ((!a) || (!s))
 597                 return NULL;
 598
 599         /* decompress utf-string */
 600         for (i = 0; i < utflength; i++)
 601                 a->data[i] = utf_nextu2(&utf_ptr);
 602
 603         /* set fields of the javastring-object */
 604         s->value  = a;
 605         s->offset = 0;
 606         s->count  = utflength;
 607
 608 /*      return (java_objectheader*) s; */
 609         return s;
 610 }
 611
 612
 613 /********************** function: javastring_new_char **************************
 614
 615         creates a new java/lang/String object which contains the convertet
 616         C-string passed via text.
 617
 618         return: the object pointer or NULL if memory is exhausted.
 619
 620 *******************************************************************************/
 621
 622 /*  java_objectheader *javastring_new_char (char *text) */
 623 java_lang_String *javastring_new_char (char *text)
 624 {
 625         s4 i;
 626         s4 len = strlen(text); /* length of the string */
 627         java_lang_String *s;   /* result-string */
 628         java_chararray *a;
 629
 630         /*log_text("javastring_new_char");*/
 631         s = (java_lang_String*) builtin_new(class_java_lang_String);
 632         a = builtin_newarray_char(len);
 633
 634         /* javastring or character-array could not be created */
 635         if ((!a) || (!s))
 636                 return NULL;
 637
 638         /* copy text */
 639         for (i = 0; i < len; i++)
 640                 a->data[i] = text[i];
 641
 642         /* set fields of the javastring-object */
 643         s->value  = a;
 644         s->offset = 0;
 645         s->count  = len;
 646
 647 /*      return (java_objectheader*) s; */
 648         return s;
 649 }
 650
 651
 652 /************************* function javastring_tochar **************************
 653
 654         converts a Java string into a C string.
 655
 656         return: pointer to C string
 657
 658         Caution: every call of this function overwrites the previous string !!!
 659
 660 *******************************************************************************/
 661
 662 static char stringbuffer[MAXSTRINGSIZE];
 663
 664 char *javastring_tochar(java_objectheader *so)
 665 {
 666         java_lang_String *s = (java_lang_String *) so;
 667         java_chararray *a;
 668         s4 i;
 669
 670         if (!s)
 671                 return "";
 672
 673         a = s->value;
 674
 675         if (!a)
 676                 return "";
 677
 678         if (s->count > MAXSTRINGSIZE)
 679                 return "";
 680
 681         for (i = 0; i < s->count; i++)
 682                 stringbuffer[i] = a->data[s->offset + i];
 683
 684         stringbuffer[i] = '\0';
 685
 686         return stringbuffer;
 687 }
 688
 689
 690 /****************** function class_findfield_approx ****************************
 691
 692         searches in 'classinfo'-structure for a field with the
 693         specified name
 694
 695 *******************************************************************************/
 696
 697 fieldinfo *class_findfield_approx(classinfo *c, utf *name)
 698 {
 699         s4 i;
 700         for (i = 0; i < c->fieldscount; i++) {
 701                 /* compare field names */
 702                 if ((c->fields[i].name == name))
 703                         return &(c->fields[i]);
 704         }
 705
 706         /* field was not found, raise exception */
 707         *exceptionptr = native_new_and_init(class_java_lang_NoSuchFieldException);
 708
 709         return NULL;
 710 }
 711
 712 s4 class_findfield_index_approx (classinfo *c, utf *name)
 713 {
 714         s4 i;
 715         for (i = 0; i < c->fieldscount; i++) {
 716                 /* compare field names */
 717                 if ((c->fields[i].name == name))
 718                         return i;
 719                 }
 720
 721         /* field was not found, raise exception */
 722         *exceptionptr = native_new_and_init(class_java_lang_NoSuchFieldException);
 723         return -1;
 724 }
 725
 726
 727 /********************** function: native_new_and_init *************************
 728
 729         Creates a new object on the heap and calls the initializer.
 730         Returns the object pointer or NULL if memory is exhausted.
 731
 732 *******************************************************************************/
 733
 734 java_objectheader *native_new_and_init(classinfo *c)
 735 {
 736         methodinfo *m;
 737         java_objectheader *o;
 738
 739         /* if c==NULL it is probebly because loader_load failed */
 740         if (!c) return *exceptionptr;
 741
 742         o = builtin_new(c);          /* create object          */
 743
 744         /*
 745         printf("native_new_and_init ");
 746         utf_display(c->name);
 747         printf("\n");
 748         */
 749         if (!o) return NULL;
 750         /* printf("o!=NULL\n"); */
 751         /* find initializer */
 752
 753         m = class_findmethod(c, utf_new_char("<init>"), utf_new_char("()V"));
 754
 755         if (!m) {                                       /* initializer not found  */
 756                 if (verbose) {
 757                         char logtext[MAXLOGTEXT];
 758                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 759                         utf_sprint(logtext + strlen(logtext), c->name);
 760                         log_text(logtext);
 761                 }
 762                 return o;
 763         }
 764
 765         /* call initializer */
 766
 767         asm_calljavafunction(m, o, NULL, NULL, NULL);
 768
 769         return o;
 770 }
 771
 772
 773 java_objectheader *native_new_and_init_string(classinfo *c, java_lang_String *s)
 774 {
 775         methodinfo *m;
 776         java_objectheader *o;
 777
 778         /* if c==NULL it is probebly because loader_load failed */
 779         if (!c) return *exceptionptr;
 780
 781         o = builtin_new(c);          /* create object          */
 782
 783         if (!o) return NULL;
 784
 785         /* find initializer */
 786
 787         m = class_findmethod(c,
 788                                                  utf_new_char("<init>"),
 789                                                  utf_new_char("(Ljava/lang/String;)V"));
 790
 791         if (!m) {                                       /* initializer not found  */
 792                 if (verbose) {
 793                         char logtext[MAXLOGTEXT];
 794                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 795                         utf_sprint(logtext + strlen(logtext), c->name);
 796                         log_text(logtext);
 797                 }
 798                 return o;
 799         }
 800
 801         /* call initializer */
 802
 803         asm_calljavafunction(m, o, s, NULL, NULL);
 804
 805         return o;
 806 }
 807
 808
 809 /******************** function: stringtable_update ****************************
 810
 811         traverses the javastring hashtable and sets the vftbl-entries of
 812         javastrings which were temporarily set to NULL, because
 813         java.lang.Object was not yet loaded
 814
 815 *******************************************************************************/
 816
 817 void stringtable_update ()
 818 {
 819         java_lang_String *js;
 820         java_chararray *a;
 821         literalstring *s;       /* hashtable entry */
 822         int i;
 823
 824         for (i = 0; i < string_hash.size; i++) {
 825                 s = string_hash.ptr[i];
 826                 if (s) {
 827                         while (s) {
 828
 829                                 js = (java_lang_String *) s->string;
 830
 831                                 if (!js || !js->value)
 832                                         /* error in hashtable found */
 833                                         panic("invalid literalstring in hashtable");
 834
 835                                 a = js->value;
 836
 837                                 if (!js->header.vftbl)
 838                                         /* vftbl of javastring is NULL */
 839                                         js->header.vftbl = class_java_lang_String -> vftbl;
 840
 841                                 if (!a->header.objheader.vftbl)
 842                                         /* vftbl of character-array is NULL */
 843                                         a->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
 844
 845                                 /* follow link in external hash chain */
 846                                 s = s->hashlink;
 847                         }
 848                 }
 849         }
 850 }
 851
 852
 853 /************************* function: u2_utflength ***************************
 854
 855         returns the utf length in bytes of a u2 array
 856
 857 *****************************************************************************/
 858
 859 u4 u2_utflength(u2 *text, u4 u2_length)
 860 {
 861         u4 result_len =  0;  /* utf length in bytes  */
 862         u2 ch;               /* current unicode character */
 863         u4 len;
 864
 865         for (len = 0; len < u2_length; len++) {
 866                 /* next unicode character */
 867                 ch = *text++;
 868
 869                 /* determine bytes required to store unicode character as utf */
 870                 if (ch && (ch < 0x80))
 871                         result_len++;
 872                 else if (ch < 0x800)
 873                         result_len += 2;
 874                 else
 875                         result_len += 3;
 876         }
 877
 878     return result_len;
 879 }
 880
 881
 882 /********************* function: utf_new_u2 ***********************************
 883
 884         make utf symbol from u2 array,
 885         if isclassname is true '.' is replaced by '/'
 886
 887 *******************************************************************************/
 888
 889 utf *utf_new_u2(u2 *unicode_pos, u4 unicode_length, bool isclassname)
 890 {
 891         char *buffer; /* memory buffer for  unicode characters */
 892         char *pos;    /* pointer to current position in buffer */
 893         u4 left;      /* unicode characters left */
 894         u4 buflength; /* utf length in bytes of the u2 array  */
 895         utf *result;  /* resulting utf-string */
 896         int i;
 897
 898         /* determine utf length in bytes and allocate memory */
 899         /* printf("utf_new_u2: unicode_length=%d\n",unicode_length);            */
 900         buflength = u2_utflength(unicode_pos, unicode_length);
 901         buffer    = MNEW(char, buflength);
 902
 903         /* memory allocation failed */
 904         if (!buffer) {
 905                 printf("length: %d\n",buflength);
 906                 log_text("utf_new_u2:buffer==NULL");
 907         }
 908
 909         left = buflength;
 910         pos  = buffer;
 911
 912         for (i = 0; i++ < unicode_length; unicode_pos++) {
 913                 /* next unicode character */
 914                 u2 c = *unicode_pos;
 915
 916                 if ((c != 0) && (c < 0x80)) {
 917                         /* 1 character */
 918                         left--;
 919                 if ((int) left < 0) break;
 920                         /* convert classname */
 921                         if (isclassname && c == '.')
 922                                 *pos++ = '/';
 923                         else
 924                                 *pos++ = (char) c;
 925
 926                 } else if (c < 0x800) {
 927                         /* 2 characters */
 928                 unsigned char high = c >> 6;
 929                 unsigned char low  = c & 0x3F;
 930                         left = left - 2;
 931                 if ((int) left < 0) break;
 932                 *pos++ = high | 0xC0;
 933                 *pos++ = low  | 0x80;
 934
 935                 } else {
 936                 /* 3 characters */
 937                 char low  = c & 0x3f;
 938                 char mid  = (c >> 6) & 0x3F;
 939                 char high = c >> 12;
 940                         left = left - 3;
 941                 if ((int) left < 0) break;
 942                 *pos++ = high | 0xE0;
 943                 *pos++ = mid  | 0x80;
 944                 *pos++ = low  | 0x80;
 945                 }
 946         }
 947
 948         /* insert utf-string into symbol-table */
 949         result = utf_new(buffer,buflength);
 950
 951         MFREE(buffer, char, buflength);
 952
 953         return result;
 954 }
 955
 956
 957 /********************* function: javastring_toutf *****************************
 958
 959         make utf symbol from javastring
 960
 961 *******************************************************************************/
 962
 963 utf *javastring_toutf(java_lang_String *string, bool isclassname)
 964 {
 965         java_lang_String *str = (java_lang_String *) string;
 966
 967 /*      printf("javastring_toutf offset: %d, len %d\n",str->offset, str->count); */
 968 /*      fflush(stdout); */
 969
 970         return utf_new_u2(str->value->data + str->offset, str->count, isclassname);
 971 }
 972
 973
 974 /********************* function: literalstring_u2 *****************************
 975
 976     searches for the javastring with the specified u2-array in
 977     the string hashtable, if there is no such string a new one is
 978     created
 979
 980     if copymode is true a copy of the u2-array is made
 981
 982 *******************************************************************************/
 983
 984 java_objectheader *literalstring_u2(java_chararray *a, u4 length, u4 offset,
 985                                                                         bool copymode)
 986 {
 987     literalstring *s;                /* hashtable element */
 988     java_lang_String *js;            /* u2-array wrapped in javastring */
 989     java_chararray *stringdata;      /* copy of u2-array */
 990     u4 key;
 991     u4 slot;
 992     u2 i;
 993
 994 //#define DEBUG_LITERALSTRING_U2
 995 #ifdef DEBUG_LITERALSTRING_U2
 996     printf("literalstring_u2: length=%d, offset=%d\n", length, offset);
 997         fflush(stdout);
 998 #endif
 999
1000     /* find location in hashtable */
1001     key  = unicode_hashkey(a->data + offset, length);
1002     slot = key & (string_hash.size - 1);
1003     s    = string_hash.ptr[slot];
1004
1005     while (s) {
1006                 js = (java_lang_String *) s->string;
1007
1008                 if (length == js->count) {
1009                         /* compare text */
1010                         for (i = 0; i < length; i++) {
1011                                 if (a->data[offset + i] != js->value->data[i])
1012                                         goto nomatch;
1013                         }
1014
1015                         /* string already in hashtable, free memory */
1016                         if (!copymode)
1017                                 lit_mem_free(a, sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10);
1018
1019 #ifdef DEBUG_LITERALSTRING_U2
1020                         printf("literalstring_u2: foundentry at %p\n", js);
1021                         utf_display(javastring_toutf(js, 0));
1022                         printf("\n\n");
1023                         fflush(stdout);
1024 #endif
1025                         return (java_objectheader *) js;
1026                 }
1027
1028         nomatch:
1029                 /* follow link in external hash chain */
1030                 s = s->hashlink;
1031     }
1032
1033     if (copymode) {
1034                 /* create copy of u2-array for new javastring */
1035                 u4 arraysize = sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10;
1036                 stringdata = lit_mem_alloc(arraysize);
1037 /*              memcpy(stringdata, a, arraysize); */
1038                 memcpy(&(stringdata->header), &(a->header), sizeof(java_arrayheader));
1039                 memcpy(&(stringdata->data), &(a->data) + offset, sizeof(u2) * (length - 1) + 10);
1040
1041     } else {
1042                 stringdata = a;
1043         }
1044
1045     /* location in hashtable found, complete arrayheader */
1046     stringdata->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1047     stringdata->header.size = length;
1048
1049     /* create new javastring */
1050     js = LNEW(java_lang_String);
1051     js->header.vftbl = class_java_lang_String->vftbl;
1052     js->value  = stringdata;
1053     js->offset = 0;
1054     js->count  = length;
1055
1056     /* create new literalstring */
1057     s = NEW(literalstring);
1058     s->hashlink = string_hash.ptr[slot];
1059     s->string   = (java_objectheader *) js;
1060     string_hash.ptr[slot] = s;
1061
1062     /* update numbe of hashtable entries */
1063     string_hash.entries++;
1064
1065     /* reorganization of hashtable */
1066     if (string_hash.entries > (string_hash.size * 2)) {
1067                 /* reorganization of hashtable, average length of
1068          the external chains is approx. 2                */
1069
1070                 u4 i;
1071                 literalstring *s;
1072                 hashtable newhash; /* the new hashtable */
1073
1074                 /* create new hashtable, double the size */
1075                 init_hashtable(&newhash, string_hash.size * 2);
1076                 newhash.entries = string_hash.entries;
1077
1078                 /* transfer elements to new hashtable */
1079                 for (i = 0; i < string_hash.size; i++) {
1080                         s = string_hash.ptr[i];
1081                         while (s) {
1082                                 literalstring *nexts = s->hashlink;
1083                                 js   = (java_lang_String *) s->string;
1084                                 slot = unicode_hashkey(js->value->data, js->count) & (newhash.size - 1);
1085
1086                                 s->hashlink = newhash.ptr[slot];
1087                                 newhash.ptr[slot] = s;
1088
1089                                 /* follow link in external hash chain */
1090                                 s = nexts;
1091                         }
1092                 }
1093
1094                 /* dispose old table */
1095                 MFREE(string_hash.ptr, void*, string_hash.size);
1096                 string_hash = newhash;
1097     }
1098
1099 #ifdef DEBUG_LITERALSTRING_U2
1100         printf("literalstring_u2: newly created at %p\n", js);
1101         utf_display(javastring_toutf(js, 0));
1102         printf("\n\n");
1103         fflush(stdout);
1104 #endif
1105
1106     return (java_objectheader *) js;
1107 }
1108
1109
1110 /******************** Function: literalstring_new *****************************
1111
1112     creates a new javastring with the text of the utf-symbol
1113     and inserts it into the string hashtable
1114
1115 *******************************************************************************/
1116
1117 java_objectheader *literalstring_new(utf *u)
1118 {
1119     char *utf_ptr = u->text;         /* pointer to current unicode character in utf string */
1120     u4 utflength  = utf_strlen(u);   /* length of utf-string if uncompressed */
1121     java_chararray *a;               /* u2-array constructed from utf string */
1122     u4 i;
1123 /*    log_text("literalstring_new"); */
1124 /*    utf_display(u);*/
1125     /*if (utflength==0) while (1) sleep(60);*/
1126 /*    log_text("------------------");    */
1127     /* allocate memory */
1128     a = lit_mem_alloc(sizeof(java_chararray) + sizeof(u2) * (utflength - 1) + 10);
1129
1130     /* convert utf-string to u2-array */
1131     for (i = 0; i < utflength; i++)
1132                 a->data[i] = utf_nextu2(&utf_ptr);
1133
1134     return literalstring_u2(a, utflength, 0, false);
1135 }
1136
1137
1138 /********************** function: literalstring_free **************************
1139
1140         removes a javastring from memory
1141
1142 ******************************************************************************/
1143
1144 void literalstring_free(java_objectheader* sobj)
1145 {
1146         java_lang_String *s = (java_lang_String *) sobj;
1147         java_chararray *a = s->value;
1148
1149         log_text("literalstring_free called");
1150
1151         /* dispose memory of java.lang.String object */
1152         LFREE(s, java_lang_String);
1153
1154         /* dispose memory of java-characterarray */
1155         LFREE(a, sizeof(java_chararray) + sizeof(u2) * (a->header.size - 1)); /* +10 ?? */
1156 }
1157
1158
1159 void copy_vftbl(vftbl **dest, vftbl *src)
1160 {
1161     *dest = src;
1162 #if 0
1163     /* XXX this kind of copying does not work (in the general
1164      * case). The interface tables would have to be copied, too. I
1165      * don't see why we should make a copy anyway. -Edwin
1166      */
1167         *dest = mem_alloc(sizeof(vftbl) + sizeof(methodptr)*(src->vftbllength-1));
1168         memcpy(*dest, src, sizeof(vftbl) - sizeof(methodptr));
1169         memcpy(&(*dest)->table, &src->table, src->vftbllength * sizeof(methodptr));
1170 #endif
1171 }
1172
1173
1174 /******************************************************************************************
1175
1176         creates method signature (excluding return type) from array of
1177         class-objects representing the parameters of the method
1178
1179 *******************************************************************************************/
1180
1181
1182 utf *create_methodsig(java_objectarray* types, char *retType)
1183 {
1184     char *buffer;       /* buffer for building the desciptor */
1185     char *pos;          /* current position in buffer */
1186     utf *result;        /* the method signature */
1187     u4 buffer_size = 3; /* minimal size=3: room for parenthesis and returntype */
1188     u4 i, j;
1189
1190     if (!types) return NULL;
1191
1192     /* determine required buffer-size */
1193     for (i = 0; i < types->header.size; i++) {
1194                 classinfo *c = (classinfo *) types->data[i];
1195                 buffer_size  = buffer_size + c->name->blength + 2;
1196     }
1197
1198     if (retType) buffer_size += strlen(retType);
1199
1200     /* allocate buffer */
1201     buffer = MNEW(u1, buffer_size);
1202     pos    = buffer;
1203
1204     /* method-desciptor starts with parenthesis */
1205     *pos++ = '(';
1206
1207     for (i = 0; i < types->header.size; i++) {
1208                 char ch;
1209
1210                 /* current argument */
1211             classinfo *c = (classinfo *) types->data[i];
1212
1213             /* current position in utf-text */
1214             char *utf_ptr = c->name->text;
1215
1216             /* determine type of argument */
1217             if ((ch = utf_nextu2(&utf_ptr)) == '[') {
1218                 /* arrayclass */
1219                 for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1220                                 *pos++ = *utf_ptr; /* copy text */
1221                         }
1222
1223             } else {
1224                         /* check for primitive types */
1225                         for (j = 0; j < PRIMITIVETYPE_COUNT; j++) {
1226                                 char *utf_pos   = utf_ptr - 1;
1227                                 char *primitive = primitivetype_table[j].wrapname;
1228
1229                                 /* compare text */
1230                                 while (utf_pos < utf_end(c->name)) {
1231                                         if (*utf_pos++ != *primitive++) goto nomatch;
1232                                 }
1233
1234                                 /* primitive type found */
1235                                 *pos++ = primitivetype_table[j].typesig;
1236                                 goto next_type;
1237
1238                         nomatch:
1239                         }
1240
1241                         /* no primitive type and no arrayclass, so must be object */
1242                         *pos++ = 'L';
1243
1244                         /* copy text */
1245                         for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1246                                 *pos++ = *utf_ptr;
1247                         }
1248
1249                         *pos++ = ';';
1250
1251                 next_type:
1252                 }
1253     }
1254
1255     *pos++ = ')';
1256
1257     if (retType) {
1258                 for (i = 0; i < strlen(retType); i++) {
1259                         *pos++ = retType[i];
1260                 }
1261     }
1262
1263     /* create utf-string */
1264     result = utf_new(buffer, (pos - buffer));
1265     MFREE(buffer, u1, buffer_size);
1266
1267     return result;
1268 }
1269
1270
1271 /******************************************************************************************
1272
1273         retrieve the next argument or returntype from a descriptor
1274         and return the corresponding class
1275
1276 *******************************************************************************************/
1277
1278 classinfo *get_type(char **utf_ptr,char *desc_end, bool skip)
1279 {
1280     classinfo *c = class_from_descriptor(*utf_ptr,desc_end,utf_ptr,
1281                                          (skip) ? CLASSLOAD_SKIP : CLASSLOAD_LOAD);
1282     if (!c)
1283         /* unknown type */
1284         panic("illegal descriptor");
1285
1286     if (skip) return NULL;
1287
1288     use_class_as_object(c);
1289     return c;
1290 }
1291
1292
1293 /******************************************************************************************
1294
1295         use the descriptor of a method to generate a java/lang/Class array
1296         which contains the classes of the parametertypes of the method
1297
1298 *******************************************************************************************/
1299
1300 java_objectarray* get_parametertypes(methodinfo *m)
1301 {
1302     utf  *descr    =  m->descriptor;    /* method-descriptor */
1303     char *utf_ptr  =  descr->text;      /* current position in utf-text */
1304     char *desc_end =  utf_end(descr);   /* points behind utf string     */
1305     java_objectarray* result;
1306     int parametercount = 0;
1307     int i;
1308
1309     /* skip '(' */
1310     utf_nextu2(&utf_ptr);
1311
1312     /* determine number of parameters */
1313     while ( *utf_ptr != ')' ) {
1314         get_type(&utf_ptr,desc_end,true);
1315         parametercount++;
1316     }
1317
1318     /* create class-array */
1319     result = builtin_anewarray(parametercount, class_java_lang_Class);
1320
1321     utf_ptr  =  descr->text;
1322     utf_nextu2(&utf_ptr);
1323
1324     /* get returntype classes */
1325     for (i = 0; i < parametercount; i++)
1326             result->data[i] = (java_objectheader *) get_type(&utf_ptr,desc_end, false);
1327
1328     return result;
1329 }
1330
1331
1332
1333
1334
1335 /******************************************************************************************
1336
1337         get the exceptions which can be thrown by a method
1338
1339 *******************************************************************************************/
1340
1341 java_objectarray* get_exceptiontypes(methodinfo *m)
1342 {
1343 }
1344
1345
1346
1347
1348
1349 /******************************************************************************************
1350
1351         get the returntype class of a method
1352
1353 *******************************************************************************************/
1354
1355 classinfo *get_returntype(methodinfo *m)
1356 {
1357         char *utf_ptr;   /* current position in utf-text */
1358         char *desc_end;  /* points behind utf string     */
1359         utf *desc = m->descriptor; /* method-descriptor  */
1360
1361         utf_ptr  = desc->text;
1362         desc_end = utf_end(desc);
1363
1364         /* ignore parametertypes */
1365         while ((utf_ptr<desc_end) && utf_nextu2(&utf_ptr)!=')')
1366                 /* skip */ ;
1367
1368         return get_type(&utf_ptr,desc_end, false);
1369 }
1370
1371
1372 /*****************************************************************************/
1373 /*****************************************************************************/
1374
1375
1376 /*--------------------------------------------------------*/
1377 void printNativeCall(nativeCall nc) {
1378   int i,j;
1379
1380   printf("\n%s's Native Methods call:\n",nc.classname); fflush(stdout);
1381   for (i=0; i<nc.methCnt; i++) {
1382       printf("\tMethod=%s %s\n",nc.methods[i].methodname, nc.methods[i].descriptor);fflush(stdout);
1383
1384     for (j=0; j<nc.callCnt[i]; j++) {
1385         printf("\t\t<%i,%i>aCalled = %s %s %s\n",i,j,
1386         nc.methods[i].methodCalls[j].classname,
1387         nc.methods[i].methodCalls[j].methodname,
1388         nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1389       }
1390     }
1391   printf("-+++++--------------------\n");fflush(stdout);
1392 }
1393
1394 /*--------------------------------------------------------*/
1395 void printCompNativeCall(nativeCompCall nc) {
1396   int i,j;
1397   printf("printCompNativeCall BEGIN\n");fflush(stdout);
1398   printf("\n%s's Native Comp Methods call:\n",nc.classname->text);fflush(stdout);
1399   utf_display(nc.classname); fflush(stdout);
1400
1401   for (i=0; i<nc.methCnt; i++) {
1402     printf("\tMethod=%s %s\n",nc.methods[i].methodname->text,nc.methods[i].descriptor->text);fflush(stdout);
1403     utf_display(nc.methods[i].methodname); fflush(stdout);
1404     utf_display(nc.methods[i].descriptor);fflush(stdout);
1405     printf("\n");fflush(stdout);
1406
1407     for (j=0; j<nc.callCnt[i]; j++) {
1408       printf("\t\t<%i,%i>bCalled = ",i,j);fflush(stdout);
1409         utf_display(nc.methods[i].methodCalls[j].classname);fflush(stdout);
1410         utf_display(nc.methods[i].methodCalls[j].methodname); fflush(stdout);
1411         utf_display(nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1412         printf("\n");fflush(stdout);
1413       }
1414     }
1415 printf("---------------------\n");fflush(stdout);
1416 }
1417
1418
1419 /*--------------------------------------------------------*/
1420 classMeth findNativeMethodCalls(utf *c, utf *m, utf *d )
1421 {
1422     int i = 0;
1423     int j = 0;
1424     int cnt = 0;
1425     classMeth mc;
1426     mc.i_class = i;
1427     mc.j_method = j;
1428     mc.methCnt = cnt;
1429
1430     return mc;
1431 }
1432
1433 /*--------------------------------------------------------*/
1434 nativeCall* findNativeClassCalls(char *aclassname ) {
1435 int i;
1436
1437 for (i=0;i<NATIVECALLSSIZE; i++) {
1438    /* convert table to utf later to speed up search */
1439    if (strcmp(nativeCalls[i].classname, aclassname) == 0)
1440         return &nativeCalls[i];
1441    }
1442
1443 return NULL;
1444 }
1445 /*--------------------------------------------------------*/
1446 /*--------------------------------------------------------*/
1447 void utfNativeCall(nativeCall nc, nativeCompCall *ncc) {
1448   int i,j;
1449
1450
1451   ncc->classname = utf_new_char(nc.classname);
1452   ncc->methCnt = nc.methCnt;
1453
1454   for (i=0; i<nc.methCnt; i++) {
1455     ncc->methods[i].methodname = utf_new_char(nc.methods[i].methodname);
1456     ncc->methods[i].descriptor = utf_new_char(nc.methods[i].descriptor);
1457     ncc->callCnt[i] = nc.callCnt[i];
1458
1459     for (j=0; j<nc.callCnt[i]; j++) {
1460
1461         ncc->methods[i].methodCalls[j].classname  = utf_new_char(nc.methods[i].methodCalls[j].classname);
1462
1463         if (strcmp("", nc.methods[i].methodCalls[j].methodname) != 0) {
1464           ncc->methods[i].methodCalls[j].methodname = utf_new_char(nc.methods[i].methodCalls[j].methodname);
1465           ncc->methods[i].methodCalls[j].descriptor = utf_new_char(nc.methods[i].methodCalls[j].descriptor);
1466           }
1467         else {
1468           ncc->methods[i].methodCalls[j].methodname = NULL;
1469           ncc->methods[i].methodCalls[j].descriptor = NULL;
1470           }
1471       }
1472     }
1473 }
1474
1475
1476
1477 /*--------------------------------------------------------*/
1478
1479 bool natcall2utf(bool natcallcompdone) {
1480 int i;
1481
1482 if (natcallcompdone)
1483         return true;
1484
1485 for (i=0;i<NATIVECALLSSIZE; i++) {
1486    utfNativeCall  (nativeCalls[i], &nativeCompCalls[i]);
1487    }
1488
1489 return true;
1490 }
1491
1492 /*--------------------------------------------------------*/
1493
1494
1495 java_objectarray *builtin_asm_createclasscontextarray(classinfo **end,classinfo **start) {
1496 #warning platform dependend
1497         java_objectarray *tmpArray;
1498         int i;
1499         classinfo **current;
1500         classinfo *c;
1501         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1502         printf("end %p, start %p, size %ld\n",end,start,size);
1503         if (!class_java_lang_Class)
1504                 class_java_lang_Class = class_new(utf_new_char ("java/lang/Class"));
1505         tmpArray=builtin_newarray(size, class_array_of(class_java_lang_Class)->vftbl);
1506
1507         for(i=0,current=start;i<size;i++,current--) {
1508                 c=*current;
1509                 printf("%d\n",i);
1510                 utf_display(c->name);
1511                 use_class_as_object(c);
1512                 tmpArray->data[i]=c;
1513         }
1514         return tmpArray;
1515
1516 }
1517
1518 java_lang_ClassLoader *builtin_asm_getclassloader(classinfo **end,classinfo **start) {
1519 #warning platform dependend
1520         int i;
1521         classinfo **current;
1522         classinfo *c;
1523         classinfo *privilegedAction;
1524         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1525         log_text("builtin_asm_getclassloader");
1526         printf("end %p, start %p, size %ld\n",end,start,size);
1527
1528         privilegedAction=class_new(utf_new_char("java/security/PrivilegedAction"));
1529
1530         for(i=0,current=start;i<size;i++,current--) {
1531                 c=*current;
1532                 if (c==privilegedAction) return NULL;
1533                 if (c->classloader) return c->classloader;
1534         }
1535         return NULL;
1536
1537
1538
1539
1540 /*
1541         log_text("Java_java_lang_VMSecurityManager_currentClassLoader");
1542         init_systemclassloader();
1543
1544         return SystemClassLoader;*/
1545 }
1546
1547 /*
1548  * These are local overrides for various environment variables in Emacs.
1549  * Please do not remove this and leave it at the end of the file, where
1550  * Emacs will automagically detect them.
1551  * ---------------------------------------------------------------------
1552  * Local variables:
1553  * mode: c
1554  * indent-tabs-mode: t
1555  * c-basic-offset: 4
1556  * tab-width: 4
1557  * End:
1558  */