src/native/native.c

   1 /* native.c - table of native functions
   2
   3    Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
   4    R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser,
   5    M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck,
   6    P. Tomsich, J. Wenninger
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  23    02111-1307, USA.
  24
  25    Contact: cacao@complang.tuwien.ac.at
  26
  27    Authors: Reinhard Grafl
  28             Roman Obermaisser
  29             Andreas Krall
  30
  31    The .hh files created with the header file generator are all
  32    included here as are the C functions implementing these methods.
  33
  34    $Id: native.c 951 2004-03-11 17:30:03Z 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_lang_SecurityManager;
 108 classinfo *class_java_net_UnknownHostException;
 109 classinfo *class_java_net_SocketException;
 110 classinfo *class_java_lang_NoSuchMethodException;
 111 classinfo *class_java_lang_Double;
 112 classinfo *class_java_lang_Float;
 113 classinfo *class_java_lang_Long;
 114 classinfo *class_java_lang_Byte;
 115 classinfo *class_java_lang_Short;
 116 classinfo *class_java_lang_Boolean;
 117 classinfo *class_java_lang_Void;
 118 classinfo *class_java_lang_Character;
 119 classinfo *class_java_lang_Integer;
 120
 121
 122 /* specify some exception strings for code generation */
 123 char *string_java_lang_NoClassDefFoundError =
 124     "java/lang/NoClassDefFoundError";
 125
 126 char *string_java_lang_LinkageError =
 127     "java/lang/LinkageError";
 128
 129 char *string_java_lang_ArrayIndexOutOfBoundsException =
 130     "java/lang/ArrayIndexOutOfBoundsException";
 131
 132 char *string_java_lang_NegativeArraySizeException =
 133     "java/lang/NegativeArraySizeException";
 134
 135 char *string_java_lang_ClassCastException =
 136     "java/lang/ClassCastException";
 137
 138 char *string_java_lang_ArithmeticException =
 139     "java/lang/ArithmeticException";
 140
 141 char *string_java_lang_ArithmeticException_message =
 142     "/ by zero";
 143
 144 char *string_java_lang_NullPointerException =
 145     "java/lang/NullPointerException";
 146
 147 char *string_java_lang_ArrayStoreException =
 148     "java/lang/ArrayStoreException";
 149
 150
 151 /* the system classloader object */
 152 struct java_lang_ClassLoader *SystemClassLoader = NULL;
 153
 154 /* for raising exceptions from native methods */
 155 THREADSPECIFIC java_objectheader* _exceptionptr = NULL;
 156
 157 /************* use classinfo structure as java.lang.Class object **************/
 158
 159 void use_class_as_object(classinfo *c)
 160 {
 161         vftbl *vt;
 162 /*      vftbl *newtbl; */
 163
 164         if (!class_java_lang_Class)
 165                 class_java_lang_Class = class_new(utf_new_char ("java/lang/Class"));
 166
 167         vt = class_java_lang_Class->vftbl;
 168
 169
 170         if (!c->classvftbl) {
 171                 c->classvftbl = true;
 172
 173                 /*                copy_vftbl(&newtbl, vt);
 174                                                   newtbl->class = c->header.vftbl->class;
 175                                                   newtbl->baseval = c->header.vftbl->baseval;
 176                                                   newtbl->diffval = c->header.vftbl->diffval;
 177                                                   c->header.vftbl = newtbl;*/
 178
 179                 c->header.vftbl = class_java_lang_Class->vftbl;
 180
 181                 if (!class_java_lang_VMClass) {
 182                         loader_load_sysclass(&class_java_lang_VMClass,
 183                                                                  utf_new_char("java/lang/VMClass"));
 184
 185                         method_vmclass_init =
 186                                 class_findmethod(class_java_lang_VMClass,
 187                                                                  utf_new_char("<init>"),
 188                                                                  utf_new_char("(Lgnu/classpath/RawData;)V"));
 189
 190                         if (method_vmclass_init == 0) {
 191                                 class_showmethods(class_java_lang_VMClass);
 192                                 panic("Needed class initializer for VMClass could not be found");
 193                         }
 194                 }
 195                 {
 196                         java_objectheader *vmo = builtin_new(class_java_lang_VMClass);
 197
 198                         if (!vmo) panic("Error while creating instance of java/lang/VMClass");
 199                         asm_calljavafunction(method_vmclass_init, vmo, c, NULL, NULL);
 200                         c->vmClass = (java_lang_VMClass *) vmo;
 201                         /*log_text("VMCLASS has been attached");*/
 202                 }
 203         }
 204 }
 205
 206
 207 /*************************** include native methods ***************************/
 208
 209 #ifdef USE_GTK
 210 #include "nat/GdkGraphics.c"
 211 #include "nat/GtkComponentPeer.c"
 212 #include "nat/GdkPixbufDecoder.c"
 213 #include "nat/GtkScrollPanePeer.c"
 214 #include "nat/GtkFileDialogPeer.c"
 215 #include "nat/GtkLabelPeer.c"
 216 #endif
 217
 218
 219 /************************** tables for methods ********************************/
 220
 221 #undef JOWENN_DEBUG
 222 #undef JOWENN_DEBUG1
 223
 224 /* table for locating native methods */
 225 static struct nativeref {
 226         char *classname;
 227         char *methodname;
 228         char *descriptor;
 229         bool isstatic;
 230         functionptr func;
 231 } nativetable [] = {
 232
 233 #include "nativetable.hh"
 234
 235 };
 236
 237
 238 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
 239
 240 /* table for fast string comparison */
 241 static struct nativecompref {
 242         utf *classname;
 243         utf *methodname;
 244         utf *descriptor;
 245         bool isstatic;
 246         functionptr func;
 247 } nativecomptable [NATIVETABLESIZE];
 248
 249 /* string comparsion table initialized */
 250 static bool nativecompdone = false;
 251
 252
 253 /******************************************************************************/
 254 /******************************************************************************/
 255 #include "natcalls.h"
 256
 257 /* string call comparison table initialized */
 258
 259 /******************************************************************************/
 260 /******************************************************************************/
 261
 262 /*--------------- native method calls & classes used -------------------------*/
 263
 264
 265
 266 /* throw some loader exceptions */
 267
 268 void throw_noclassdeffounderror_message(utf* classname)
 269 {
 270         if (!class_java_lang_NoClassDefFoundError) {
 271                 panic("java.lang.NoClassDefFoundError not found. Maybe wrong classpath?");
 272         }
 273
 274         /* throws a NoClassDefFoundError with message */
 275         *exceptionptr = native_new_and_init_string(class_java_lang_NoClassDefFoundError,
 276                                                                                           javastring_new(classname));
 277 }
 278
 279
 280 void throw_linkageerror_message(utf* classname)
 281 {
 282         if (!class_java_lang_LinkageError) {
 283                 panic("java.lang.LinkageError not found. Maybe wrong classpath?");
 284         }
 285
 286         /* throws a LinkageError with message */
 287         *exceptionptr = native_new_and_init_string(class_java_lang_LinkageError,
 288                                                                                           javastring_new(classname));
 289 }
 290
 291
 292 java_objectheader *new_exception(char *classname)
 293 {
 294         classinfo *c = class_new(utf_new_char(classname));
 295
 296         if (!c->linked)
 297                 panic("exception class not linked");
 298
 299         return native_new_and_init(c);
 300 }
 301
 302 java_objectheader *new_exception_message(char *classname, char *message)
 303 {
 304         classinfo *c = class_new(utf_new_char(classname));
 305
 306         if (!c->linked)
 307                 panic("exception class not linked");
 308
 309         return native_new_and_init_string(c, javastring_new_char(message));
 310 }
 311
 312
 313 java_objectheader *new_exception_int(char *classname, s4 i)
 314 {
 315         classinfo *c = class_new(utf_new_char(classname));
 316
 317         if (!c->linked)
 318                 panic("exception class not linked");
 319
 320         return native_new_and_init_int(c, i);
 321 }
 322
 323
 324 /*********************** function: native_loadclasses **************************
 325
 326         load classes required for native methods
 327
 328 *******************************************************************************/
 329
 330 void native_loadclasses()
 331 {
 332         static int classesLoaded=0; /*temporary hack JoWenn*/
 333         if (classesLoaded) return;
 334         classesLoaded = 1;
 335 /*      log_text("loadclasses entered");*/
 336
 337
 338         /*class_java_lang_System =*/
 339         (void) class_new(utf_new_char("java/lang/VMClass"));/*JoWenn*/
 340         (void) class_new(utf_new_char("java/lang/Class"));/*JoWenn*/
 341
 342         /* class_new adds the class to the list of classes to be loaded */
 343         if (!class_java_lang_Cloneable)
 344                 class_java_lang_Cloneable =
 345                         class_new(utf_new_char("java/lang/Cloneable"));
 346 /*      log_text("loadclasses: class_java_lang_Cloneable has been initialized");*/
 347         class_java_lang_CloneNotSupportedException =
 348                 class_new(utf_new_char("java/lang/CloneNotSupportedException"));
 349         if (!class_java_lang_Class)
 350                 class_java_lang_Class =
 351                         class_new(utf_new_char("java/lang/Class"));
 352         class_java_io_IOException =
 353                 class_new(utf_new_char("java/io/IOException"));
 354         class_java_io_FileNotFoundException =
 355                 class_new(utf_new_char("java/io/FileNotFoundException"));
 356         class_java_lang_NoClassDefFoundError =
 357                 class_new(utf_new_char("java/lang/NoClassDefFoundError"));
 358         class_java_lang_ClassNotFoundException =
 359                 class_new(utf_new_char("java/lang/ClassNotFoundException"));
 360         class_java_lang_LinkageError =
 361                 class_new(utf_new_char("java/lang/LinkageError"));
 362         class_java_lang_InstantiationException =
 363                 class_new(utf_new_char("java/lang/InstantiationException"));
 364         class_java_lang_NoSuchMethodError =
 365                 class_new(utf_new_char("java/lang/NoSuchMethodError"));
 366         class_java_lang_NoSuchFieldError =
 367                 class_new(utf_new_char("java/lang/NoSuchFieldError"));
 368         class_java_lang_ClassFormatError =
 369                 class_new(utf_new_char("java/lang/ClassFormatError"));
 370         class_java_io_SyncFailedException =
 371                 class_new(utf_new_char("java/io/SyncFailedException"));
 372
 373 /*      log_text("native_loadclasses: class_new(\"java/lang/ClassLoader\")");           */
 374         class_java_lang_ClassLoader =
 375                 class_new(utf_new_char("java/lang/ClassLoader"));
 376         class_gnu_java_lang_SystemClassLoader =
 377                 class_new(utf_new_char("gnu/java/lang/SystemClassLoader"));
 378
 379 /*      log_text("native_loadclasses: class_new(\"java/security/PrivilegedActionException\")");         */
 380         class_java_security_PrivilegedActionException =
 381                 class_new(utf_new_char("java/security/PrivilegedActionException"));
 382
 383         loader_load_sysclass(&class_java_net_UnknownHostException,
 384                                                  utf_new_char("java/net/UnknownHostException"));
 385         loader_load_sysclass(&class_java_net_SocketException,
 386                                                  utf_new_char("java/net/SocketException"));
 387
 388         class_java_lang_IllegalArgumentException =
 389                 class_new(utf_new_char("java/lang/IllegalArgumentException"));
 390         class_java_lang_ArrayIndexOutOfBoundsException =
 391                 class_new(utf_new_char("java/lang/ArrayIndexOutOfBoundsException"));
 392         class_java_lang_NoSuchFieldException =
 393                 class_new(utf_new_char("java/lang/NoSuchFieldException"));
 394         class_java_lang_NoSuchMethodException =
 395                 class_new(utf_new_char("java/lang/NoSuchMethodException"));
 396
 397         /* load classes for wrapping primitive types */
 398         class_java_lang_Double    = class_new(utf_new_char("java/lang/Double"));
 399         class_init(class_java_lang_Double);
 400
 401         class_java_lang_Float     = class_new(utf_new_char("java/lang/Float"));
 402         class_java_lang_Character =     class_new(utf_new_char("java/lang/Character"));
 403         class_java_lang_Integer   = class_new(utf_new_char("java/lang/Integer"));
 404         class_java_lang_Long      = class_new(utf_new_char("java/lang/Long"));
 405         class_java_lang_Byte      = class_new(utf_new_char("java/lang/Byte"));
 406         class_java_lang_Short     = class_new(utf_new_char("java/lang/Short"));
 407         class_java_lang_Boolean   = class_new(utf_new_char("java/lang/Boolean"));
 408         class_java_lang_Void      = class_new(utf_new_char("java/lang/Void"));
 409
 410         classesLoaded = 1;
 411 }
 412
 413
 414 /*************** adds a class to the vector of loaded classes ****************/
 415
 416 void systemclassloader_addclass(classinfo *c)
 417 {
 418         methodinfo *m;
 419
 420         /* find method addClass of java.lang.ClassLoader */
 421         m = class_resolvemethod(class_java_lang_ClassLoader,
 422                                                         utf_new_char("addClass"),
 423                                                         utf_new_char("(Ljava/lang/Class;)")
 424                                                         );
 425
 426         if (!m)
 427                 panic("warning: cannot initialize classloader");
 428
 429         /* prepare class to be passed as argument */
 430         use_class_as_object (c);
 431
 432         /* call 'addClass' */
 433         asm_calljavafunction(m,
 434                                                  (java_objectheader*) SystemClassLoader,
 435                                                  (java_objectheader*) c,
 436                                                  NULL,
 437                                                  NULL
 438                                                  );
 439 }
 440
 441
 442 /*************** adds a library to the vector of loaded libraries *************/
 443
 444 void systemclassloader_addlibrary(java_objectheader *o)
 445 {
 446         log_text("systemclassloader_addlibrary");
 447 }
 448
 449
 450 /*****************************************************************************
 451
 452         create systemclassloader object and initialize instance fields
 453
 454 ******************************************************************************/
 455
 456 void init_systemclassloader()
 457 {
 458         if (!SystemClassLoader) {
 459                 native_loadclasses();
 460                 log_text("Initializing new system class loader");
 461                 /* create object and call initializer */
 462                 SystemClassLoader = (java_lang_ClassLoader *) native_new_and_init(class_gnu_java_lang_SystemClassLoader);/*class_java_lang_ClassLoader);*/
 463
 464                 /* systemclassloader has no parent */
 465                 SystemClassLoader->parent      = NULL;
 466                 SystemClassLoader->initialized = true;
 467         }
 468         log_text("leaving system class loader");
 469 }
 470
 471
 472 /********************* add loaded library name  *******************************/
 473
 474 void systemclassloader_addlibname(java_objectheader *o)
 475 {
 476         methodinfo *m;
 477         jfieldID id;
 478
 479         m = class_resolvemethod(loader_load_sysclass(NULL, utf_new_char("java/util/Vector")),
 480                                                         utf_new_char("addElement"),
 481                                                         utf_new_char("(Ljava/lang/Object;)V"));
 482
 483         if (!m) panic("cannot initialize classloader");
 484
 485         id = envTable.GetStaticFieldID(&env,
 486                                                                    class_java_lang_ClassLoader,
 487                                                                    "loadedLibraryNames",
 488                                                                    "Ljava/util/Vector;");
 489
 490         if (!id) panic("can not access ClassLoader");
 491
 492         asm_calljavafunction(m,
 493                                                  envTable.GetStaticObjectField(&env, class_java_lang_ClassLoader, id),
 494                                                  o,
 495                                                  NULL,
 496                                                  NULL);
 497 }
 498
 499
 500 /********************* function: native_setclasspath **************************/
 501
 502 void native_setclasspath(char *path)
 503 {
 504         /* set searchpath for classfiles */
 505         classpath = path;
 506 }
 507
 508
 509 /*********************** Function: native_findfunction *************************
 510
 511         Looks up a method (must have the same class name, method name, descriptor
 512         and 'static'ness) and returns a function pointer to it.
 513         Returns: function pointer or NULL (if there is no such method)
 514
 515         Remark: For faster operation, the names/descriptors are converted from C
 516                 strings to Unicode the first time this function is called.
 517
 518 *******************************************************************************/
 519
 520 functionptr native_findfunction(utf *cname, utf *mname,
 521                                                                 utf *desc, bool isstatic)
 522 {
 523         int i;
 524         /* entry of table for fast string comparison */
 525         struct nativecompref *n;
 526         /* for warning message if no function is found */
 527         char *buffer;
 528         int buffer_len;
 529
 530         isstatic = isstatic ? true : false;
 531
 532         if (!nativecompdone) {
 533                 for (i = 0; i < NATIVETABLESIZE; i++) {
 534                         nativecomptable[i].classname  =
 535                                 utf_new_char(nativetable[i].classname);
 536                         nativecomptable[i].methodname =
 537                                 utf_new_char(nativetable[i].methodname);
 538                         nativecomptable[i].descriptor =
 539                                 utf_new_char(nativetable[i].descriptor);
 540                         nativecomptable[i].isstatic   =
 541                                 nativetable[i].isstatic;
 542                         nativecomptable[i].func       =
 543                                 nativetable[i].func;
 544                 }
 545                 nativecompdone = true;
 546         }
 547
 548 #ifdef JOWENN_DEBUG
 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, "searching matching function in native table:");
 555         utf_sprint(buffer+strlen(buffer), mname);
 556         strcpy(buffer+strlen(buffer), ": ");
 557         utf_sprint(buffer+strlen(buffer), desc);
 558         strcpy(buffer+strlen(buffer), " for class ");
 559         utf_sprint(buffer+strlen(buffer), cname);
 560
 561         log_text(buffer);
 562
 563         MFREE(buffer, char, buffer_len);
 564 #endif
 565
 566         for (i = 0; i < NATIVETABLESIZE; i++) {
 567                 n = &(nativecomptable[i]);
 568
 569                 if (cname == n->classname && mname == n->methodname &&
 570                     desc == n->descriptor && isstatic == n->isstatic)
 571                         return n->func;
 572 #ifdef JOWENN_DEBUG
 573                         else {
 574                                 if (cname == n->classname && mname == n->methodname )  log_text("static and descriptor mismatch");
 575
 576                                 else {
 577                                         buffer_len =
 578                                           utf_strlen(n->classname) + utf_strlen(n->methodname) + utf_strlen(n->descriptor) + 64;
 579
 580                                         buffer = MNEW(char, buffer_len);
 581
 582                                         strcpy(buffer, "comparing with:");
 583                                         utf_sprint(buffer+strlen(buffer), n->methodname);
 584                                         strcpy (buffer+strlen(buffer), ": ");
 585                                         utf_sprint(buffer+strlen(buffer), n->descriptor);
 586                                         strcpy(buffer+strlen(buffer), " for class ");
 587                                         utf_sprint(buffer+strlen(buffer), n->classname);
 588
 589                                         log_text(buffer);
 590
 591                                         MFREE(buffer, char, buffer_len);
 592                                 }
 593                         }
 594 #endif
 595         }
 596
 597
 598         /* no function was found, display warning */
 599
 600         buffer_len =
 601                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 602
 603         buffer = MNEW(char, buffer_len);
 604
 605         strcpy(buffer, "warning: native function ");
 606         utf_sprint(buffer + strlen(buffer), mname);
 607         strcpy(buffer + strlen(buffer), ": ");
 608         utf_sprint(buffer + strlen(buffer), desc);
 609         strcpy(buffer + strlen(buffer), " not found in class ");
 610         utf_sprint(buffer + strlen(buffer), cname);
 611
 612         log_text(buffer);
 613
 614         MFREE(buffer, char, buffer_len);
 615
 616         exit(1);
 617
 618         /* keep compiler happy */
 619         return NULL;
 620 }
 621
 622
 623 /********************** function: javastring_new *******************************
 624
 625         creates a new object of type java/lang/String with the text of
 626         the specified utf8-string
 627
 628         return: pointer to the string or NULL if memory is exhausted.
 629
 630 *******************************************************************************/
 631
 632 /*  java_objectheader *javastring_new(utf *u) */
 633 java_lang_String *javastring_new(utf *u)
 634 {
 635         char *utf_ptr = u->text;        /* current utf character in utf string    */
 636         int utflength = utf_strlen(u);  /* length of utf-string if uncompressed   */
 637         java_lang_String *s;                /* result-string                          */
 638         java_chararray *a;
 639         s4 i;
 640
 641 /*      log_text("javastring_new");*/
 642
 643         s = (java_lang_String*) builtin_new(class_java_lang_String);
 644         a = builtin_newarray_char(utflength);
 645
 646         /* javastring or character-array could not be created */
 647         if ((!a) || (!s))
 648                 return NULL;
 649
 650         /* decompress utf-string */
 651         for (i = 0; i < utflength; i++)
 652                 a->data[i] = utf_nextu2(&utf_ptr);
 653
 654         /* set fields of the javastring-object */
 655         s->value  = a;
 656         s->offset = 0;
 657         s->count  = utflength;
 658
 659 /*      return (java_objectheader*) s; */
 660         return s;
 661 }
 662
 663
 664 /********************** function: javastring_new_char **************************
 665
 666         creates a new java/lang/String object which contains the convertet
 667         C-string passed via text.
 668
 669         return: the object pointer or NULL if memory is exhausted.
 670
 671 *******************************************************************************/
 672
 673 java_lang_String *javastring_new_char(char *text)
 674 {
 675         s4 i;
 676         s4 len = strlen(text); /* length of the string */
 677         java_lang_String *s;   /* result-string */
 678         java_chararray *a;
 679
 680         /*log_text("javastring_new_char");*/
 681         s = (java_lang_String *) builtin_new(class_java_lang_String);
 682         a = builtin_newarray_char(len);
 683
 684         /* javastring or character-array could not be created */
 685         if ((!a) || (!s))
 686                 return NULL;
 687
 688         /* copy text */
 689         for (i = 0; i < len; i++)
 690                 a->data[i] = text[i];
 691
 692         /* set fields of the javastring-object */
 693         s->value  = a;
 694         s->offset = 0;
 695         s->count  = len;
 696
 697 /*      return (java_objectheader*) s; */
 698         return s;
 699 }
 700
 701
 702 /************************* function javastring_tochar **************************
 703
 704         converts a Java string into a C string.
 705
 706         return: pointer to C string
 707
 708         Caution: every call of this function overwrites the previous string !!!
 709
 710 *******************************************************************************/
 711
 712 static char stringbuffer[MAXSTRINGSIZE];
 713
 714 char *javastring_tochar(java_objectheader *so)
 715 {
 716         java_lang_String *s = (java_lang_String *) so;
 717         java_chararray *a;
 718         s4 i;
 719
 720         if (!s)
 721                 return "";
 722
 723         a = s->value;
 724
 725         if (!a)
 726                 return "";
 727
 728         if (s->count > MAXSTRINGSIZE)
 729                 return "";
 730
 731         for (i = 0; i < s->count; i++)
 732                 stringbuffer[i] = a->data[s->offset + i];
 733
 734         stringbuffer[i] = '\0';
 735
 736         return stringbuffer;
 737 }
 738
 739
 740 /****************** function class_findfield_approx ****************************
 741
 742         searches in 'classinfo'-structure for a field with the
 743         specified name
 744
 745 *******************************************************************************/
 746
 747 fieldinfo *class_findfield_approx(classinfo *c, utf *name)
 748 {
 749         s4 i;
 750         for (i = 0; i < c->fieldscount; i++) {
 751                 /* compare field names */
 752                 if ((c->fields[i].name == name))
 753                         return &(c->fields[i]);
 754         }
 755
 756         /* field was not found, raise exception */
 757         *exceptionptr = native_new_and_init(class_java_lang_NoSuchFieldException);
 758
 759         return NULL;
 760 }
 761
 762 s4 class_findfield_index_approx (classinfo *c, utf *name)
 763 {
 764         s4 i;
 765         for (i = 0; i < c->fieldscount; i++) {
 766                 /* compare field names */
 767                 if ((c->fields[i].name == name))
 768                         return i;
 769                 }
 770
 771         /* field was not found, raise exception */
 772         *exceptionptr = native_new_and_init(class_java_lang_NoSuchFieldException);
 773         return -1;
 774 }
 775
 776
 777 /********************** function: native_new_and_init *************************
 778
 779         Creates a new object on the heap and calls the initializer.
 780         Returns the object pointer or NULL if memory is exhausted.
 781
 782 *******************************************************************************/
 783
 784 java_objectheader *native_new_and_init(classinfo *c)
 785 {
 786         methodinfo *m;
 787         java_objectheader *o;
 788
 789         /* if c==NULL it is probebly because loader_load failed */
 790         if (!c) return *exceptionptr;
 791
 792         o = builtin_new(c);          /* create object          */
 793
 794         /*
 795         printf("native_new_and_init ");
 796         utf_display(c->name);
 797         printf("\n");
 798         */
 799         if (!o) return NULL;
 800         /* printf("o!=NULL\n"); */
 801         /* find initializer */
 802
 803         m = class_findmethod(c,
 804                                                  utf_new_char("<init>"),
 805                                                  utf_new_char("()V"));
 806
 807         if (!m) {                                       /* initializer not found  */
 808                 if (verbose) {
 809                         char logtext[MAXLOGTEXT];
 810                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 811                         utf_sprint(logtext + strlen(logtext), c->name);
 812                         log_text(logtext);
 813                 }
 814                 return o;
 815         }
 816
 817         /* call initializer */
 818
 819         asm_calljavafunction(m, o, NULL, NULL, NULL);
 820
 821         return o;
 822 }
 823
 824
 825 java_objectheader *native_new_and_init_string(classinfo *c, java_lang_String *s)
 826 {
 827         methodinfo *m;
 828         java_objectheader *o;
 829
 830         /* if c==NULL it is probebly because loader_load failed */
 831         if (!c) return *exceptionptr;
 832
 833         o = builtin_new(c);          /* create object          */
 834
 835         if (!o) return NULL;
 836
 837         /* find initializer */
 838
 839         m = class_findmethod(c,
 840                                                  utf_new_char("<init>"),
 841                                                  utf_new_char("(Ljava/lang/String;)V"));
 842
 843         if (!m) {                                       /* initializer not found  */
 844                 if (verbose) {
 845                         char logtext[MAXLOGTEXT];
 846                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 847                         utf_sprint(logtext + strlen(logtext), c->name);
 848                         log_text(logtext);
 849                 }
 850                 return o;
 851         }
 852
 853         /* call initializer */
 854
 855         asm_calljavafunction(m, o, s, NULL, NULL);
 856
 857         return o;
 858 }
 859
 860
 861 java_objectheader *native_new_and_init_int(classinfo *c, s4 i)
 862 {
 863         methodinfo *m;
 864         java_objectheader *o;
 865
 866         /* if c == NULL it is probebly because loader_load failed */
 867         if (!c) return *exceptionptr;
 868
 869         o = builtin_new(c);          /* create object          */
 870
 871         if (!o) return NULL;
 872
 873         /* find initializer */
 874
 875         m = class_findmethod(c,
 876                                                  utf_new_char("<init>"),
 877                                                  utf_new_char("(I)V"));
 878
 879         if (!m) {                                       /* initializer not found  */
 880                 if (verbose) {
 881                         char logtext[MAXLOGTEXT];
 882                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 883                         utf_sprint(logtext + strlen(logtext), c->name);
 884                         log_text(logtext);
 885                 }
 886                 return o;
 887         }
 888
 889         /* call initializer */
 890
 891         asm_calljavafunction(m, o, i, NULL, NULL);
 892
 893         return o;
 894 }
 895
 896
 897 /******************** function: stringtable_update ****************************
 898
 899         traverses the javastring hashtable and sets the vftbl-entries of
 900         javastrings which were temporarily set to NULL, because
 901         java.lang.Object was not yet loaded
 902
 903 *******************************************************************************/
 904
 905 void stringtable_update ()
 906 {
 907         java_lang_String *js;
 908         java_chararray *a;
 909         literalstring *s;       /* hashtable entry */
 910         int i;
 911
 912         for (i = 0; i < string_hash.size; i++) {
 913                 s = string_hash.ptr[i];
 914                 if (s) {
 915                         while (s) {
 916
 917                                 js = (java_lang_String *) s->string;
 918
 919                                 if (!js || !js->value)
 920                                         /* error in hashtable found */
 921                                         panic("invalid literalstring in hashtable");
 922
 923                                 a = js->value;
 924
 925                                 if (!js->header.vftbl)
 926                                         /* vftbl of javastring is NULL */
 927                                         js->header.vftbl = class_java_lang_String -> vftbl;
 928
 929                                 if (!a->header.objheader.vftbl)
 930                                         /* vftbl of character-array is NULL */
 931                                         a->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
 932
 933                                 /* follow link in external hash chain */
 934                                 s = s->hashlink;
 935                         }
 936                 }
 937         }
 938 }
 939
 940
 941 /************************* function: u2_utflength ***************************
 942
 943         returns the utf length in bytes of a u2 array
 944
 945 *****************************************************************************/
 946
 947 u4 u2_utflength(u2 *text, u4 u2_length)
 948 {
 949         u4 result_len =  0;  /* utf length in bytes  */
 950         u2 ch;               /* current unicode character */
 951         u4 len;
 952
 953         for (len = 0; len < u2_length; len++) {
 954                 /* next unicode character */
 955                 ch = *text++;
 956
 957                 /* determine bytes required to store unicode character as utf */
 958                 if (ch && (ch < 0x80))
 959                         result_len++;
 960                 else if (ch < 0x800)
 961                         result_len += 2;
 962                 else
 963                         result_len += 3;
 964         }
 965
 966     return result_len;
 967 }
 968
 969
 970 /********************* function: utf_new_u2 ***********************************
 971
 972         make utf symbol from u2 array,
 973         if isclassname is true '.' is replaced by '/'
 974
 975 *******************************************************************************/
 976
 977 utf *utf_new_u2(u2 *unicode_pos, u4 unicode_length, bool isclassname)
 978 {
 979         char *buffer; /* memory buffer for  unicode characters */
 980         char *pos;    /* pointer to current position in buffer */
 981         u4 left;      /* unicode characters left */
 982         u4 buflength; /* utf length in bytes of the u2 array  */
 983         utf *result;  /* resulting utf-string */
 984         int i;
 985
 986         /* determine utf length in bytes and allocate memory */
 987         /* printf("utf_new_u2: unicode_length=%d\n",unicode_length);            */
 988         buflength = u2_utflength(unicode_pos, unicode_length);
 989         buffer    = MNEW(char, buflength);
 990
 991         /* memory allocation failed */
 992         if (!buffer) {
 993                 printf("length: %d\n",buflength);
 994                 log_text("utf_new_u2:buffer==NULL");
 995         }
 996
 997         left = buflength;
 998         pos  = buffer;
 999
1000         for (i = 0; i++ < unicode_length; unicode_pos++) {
1001                 /* next unicode character */
1002                 u2 c = *unicode_pos;
1003
1004                 if ((c != 0) && (c < 0x80)) {
1005                         /* 1 character */
1006                         left--;
1007                 if ((int) left < 0) break;
1008                         /* convert classname */
1009                         if (isclassname && c == '.')
1010                                 *pos++ = '/';
1011                         else
1012                                 *pos++ = (char) c;
1013
1014                 } else if (c < 0x800) {
1015                         /* 2 characters */
1016                 unsigned char high = c >> 6;
1017                 unsigned char low  = c & 0x3F;
1018                         left = left - 2;
1019                 if ((int) left < 0) break;
1020                 *pos++ = high | 0xC0;
1021                 *pos++ = low  | 0x80;
1022
1023                 } else {
1024                 /* 3 characters */
1025                 char low  = c & 0x3f;
1026                 char mid  = (c >> 6) & 0x3F;
1027                 char high = c >> 12;
1028                         left = left - 3;
1029                 if ((int) left < 0) break;
1030                 *pos++ = high | 0xE0;
1031                 *pos++ = mid  | 0x80;
1032                 *pos++ = low  | 0x80;
1033                 }
1034         }
1035
1036         /* insert utf-string into symbol-table */
1037         result = utf_new(buffer,buflength);
1038
1039         MFREE(buffer, char, buflength);
1040
1041         return result;
1042 }
1043
1044
1045 /********************* function: javastring_toutf *****************************
1046
1047         make utf symbol from javastring
1048
1049 *******************************************************************************/
1050
1051 utf *javastring_toutf(java_lang_String *string, bool isclassname)
1052 {
1053         java_lang_String *str = (java_lang_String *) string;
1054
1055 /*      printf("javastring_toutf offset: %d, len %d\n",str->offset, str->count); */
1056 /*      fflush(stdout); */
1057
1058         return utf_new_u2(str->value->data + str->offset, str->count, isclassname);
1059 }
1060
1061
1062 /********************* function: literalstring_u2 *****************************
1063
1064     searches for the javastring with the specified u2-array in
1065     the string hashtable, if there is no such string a new one is
1066     created
1067
1068     if copymode is true a copy of the u2-array is made
1069
1070 *******************************************************************************/
1071
1072 java_objectheader *literalstring_u2(java_chararray *a, u4 length, u4 offset,
1073                                                                         bool copymode)
1074 {
1075     literalstring *s;                /* hashtable element */
1076     java_lang_String *js;            /* u2-array wrapped in javastring */
1077     java_chararray *stringdata;      /* copy of u2-array */
1078     u4 key;
1079     u4 slot;
1080     u2 i;
1081
1082 //#define DEBUG_LITERALSTRING_U2
1083 #ifdef DEBUG_LITERALSTRING_U2
1084     printf("literalstring_u2: length=%d, offset=%d\n", length, offset);
1085         fflush(stdout);
1086 #endif
1087
1088     /* find location in hashtable */
1089     key  = unicode_hashkey(a->data + offset, length);
1090     slot = key & (string_hash.size - 1);
1091     s    = string_hash.ptr[slot];
1092
1093     while (s) {
1094                 js = (java_lang_String *) s->string;
1095
1096                 if (length == js->count) {
1097                         /* compare text */
1098                         for (i = 0; i < length; i++) {
1099                                 if (a->data[offset + i] != js->value->data[i])
1100                                         goto nomatch;
1101                         }
1102
1103                         /* string already in hashtable, free memory */
1104                         if (!copymode)
1105                                 lit_mem_free(a, sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10);
1106
1107 #ifdef DEBUG_LITERALSTRING_U2
1108                         printf("literalstring_u2: foundentry at %p\n", js);
1109                         utf_display(javastring_toutf(js, 0));
1110                         printf("\n\n");
1111                         fflush(stdout);
1112 #endif
1113                         return (java_objectheader *) js;
1114                 }
1115
1116         nomatch:
1117                 /* follow link in external hash chain */
1118                 s = s->hashlink;
1119     }
1120
1121     if (copymode) {
1122                 /* create copy of u2-array for new javastring */
1123                 u4 arraysize = sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10;
1124                 stringdata = lit_mem_alloc(arraysize);
1125 /*              memcpy(stringdata, a, arraysize); */
1126                 memcpy(&(stringdata->header), &(a->header), sizeof(java_arrayheader));
1127                 memcpy(&(stringdata->data), &(a->data) + offset, sizeof(u2) * (length - 1) + 10);
1128
1129     } else {
1130                 stringdata = a;
1131         }
1132
1133     /* location in hashtable found, complete arrayheader */
1134     stringdata->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1135     stringdata->header.size = length;
1136
1137     /* create new javastring */
1138     js = LNEW(java_lang_String);
1139     js->header.vftbl = class_java_lang_String->vftbl;
1140     js->value  = stringdata;
1141     js->offset = 0;
1142     js->count  = length;
1143
1144     /* create new literalstring */
1145     s = NEW(literalstring);
1146     s->hashlink = string_hash.ptr[slot];
1147     s->string   = (java_objectheader *) js;
1148     string_hash.ptr[slot] = s;
1149
1150     /* update numbe of hashtable entries */
1151     string_hash.entries++;
1152
1153     /* reorganization of hashtable */
1154     if (string_hash.entries > (string_hash.size * 2)) {
1155                 /* reorganization of hashtable, average length of
1156          the external chains is approx. 2                */
1157
1158                 u4 i;
1159                 literalstring *s;
1160                 hashtable newhash; /* the new hashtable */
1161
1162                 /* create new hashtable, double the size */
1163                 init_hashtable(&newhash, string_hash.size * 2);
1164                 newhash.entries = string_hash.entries;
1165
1166                 /* transfer elements to new hashtable */
1167                 for (i = 0; i < string_hash.size; i++) {
1168                         s = string_hash.ptr[i];
1169                         while (s) {
1170                                 literalstring *nexts = s->hashlink;
1171                                 js   = (java_lang_String *) s->string;
1172                                 slot = unicode_hashkey(js->value->data, js->count) & (newhash.size - 1);
1173
1174                                 s->hashlink = newhash.ptr[slot];
1175                                 newhash.ptr[slot] = s;
1176
1177                                 /* follow link in external hash chain */
1178                                 s = nexts;
1179                         }
1180                 }
1181
1182                 /* dispose old table */
1183                 MFREE(string_hash.ptr, void*, string_hash.size);
1184                 string_hash = newhash;
1185     }
1186
1187 #ifdef DEBUG_LITERALSTRING_U2
1188         printf("literalstring_u2: newly created at %p\n", js);
1189         utf_display(javastring_toutf(js, 0));
1190         printf("\n\n");
1191         fflush(stdout);
1192 #endif
1193
1194     return (java_objectheader *) js;
1195 }
1196
1197
1198 /******************** Function: literalstring_new *****************************
1199
1200     creates a new javastring with the text of the utf-symbol
1201     and inserts it into the string hashtable
1202
1203 *******************************************************************************/
1204
1205 java_objectheader *literalstring_new(utf *u)
1206 {
1207     char *utf_ptr = u->text;         /* pointer to current unicode character in utf string */
1208     u4 utflength  = utf_strlen(u);   /* length of utf-string if uncompressed */
1209     java_chararray *a;               /* u2-array constructed from utf string */
1210     u4 i;
1211 /*    log_text("literalstring_new"); */
1212 /*    utf_display(u);*/
1213     /*if (utflength==0) while (1) sleep(60);*/
1214 /*    log_text("------------------");    */
1215     /* allocate memory */
1216     a = lit_mem_alloc(sizeof(java_chararray) + sizeof(u2) * (utflength - 1) + 10);
1217
1218     /* convert utf-string to u2-array */
1219     for (i = 0; i < utflength; i++)
1220                 a->data[i] = utf_nextu2(&utf_ptr);
1221
1222     return literalstring_u2(a, utflength, 0, false);
1223 }
1224
1225
1226 /********************** function: literalstring_free **************************
1227
1228         removes a javastring from memory
1229
1230 ******************************************************************************/
1231
1232 void literalstring_free(java_objectheader* sobj)
1233 {
1234         java_lang_String *s = (java_lang_String *) sobj;
1235         java_chararray *a = s->value;
1236
1237         log_text("literalstring_free called");
1238
1239         /* dispose memory of java.lang.String object */
1240         LFREE(s, java_lang_String);
1241
1242         /* dispose memory of java-characterarray */
1243         LFREE(a, sizeof(java_chararray) + sizeof(u2) * (a->header.size - 1)); /* +10 ?? */
1244 }
1245
1246
1247 void copy_vftbl(vftbl **dest, vftbl *src)
1248 {
1249     *dest = src;
1250 #if 0
1251     /* XXX this kind of copying does not work (in the general
1252      * case). The interface tables would have to be copied, too. I
1253      * don't see why we should make a copy anyway. -Edwin
1254      */
1255         *dest = mem_alloc(sizeof(vftbl) + sizeof(methodptr)*(src->vftbllength-1));
1256         memcpy(*dest, src, sizeof(vftbl) - sizeof(methodptr));
1257         memcpy(&(*dest)->table, &src->table, src->vftbllength * sizeof(methodptr));
1258 #endif
1259 }
1260
1261
1262 /******************************************************************************************
1263
1264         creates method signature (excluding return type) from array of
1265         class-objects representing the parameters of the method
1266
1267 *******************************************************************************************/
1268
1269
1270 utf *create_methodsig(java_objectarray* types, char *retType)
1271 {
1272     char *buffer;       /* buffer for building the desciptor */
1273     char *pos;          /* current position in buffer */
1274     utf *result;        /* the method signature */
1275     u4 buffer_size = 3; /* minimal size=3: room for parenthesis and returntype */
1276     u4 i, j;
1277
1278     if (!types) return NULL;
1279
1280     /* determine required buffer-size */
1281     for (i = 0; i < types->header.size; i++) {
1282                 classinfo *c = (classinfo *) types->data[i];
1283                 buffer_size  = buffer_size + c->name->blength + 2;
1284     }
1285
1286     if (retType) buffer_size += strlen(retType);
1287
1288     /* allocate buffer */
1289     buffer = MNEW(u1, buffer_size);
1290     pos    = buffer;
1291
1292     /* method-desciptor starts with parenthesis */
1293     *pos++ = '(';
1294
1295     for (i = 0; i < types->header.size; i++) {
1296                 char ch;
1297
1298                 /* current argument */
1299             classinfo *c = (classinfo *) types->data[i];
1300
1301             /* current position in utf-text */
1302             char *utf_ptr = c->name->text;
1303
1304             /* determine type of argument */
1305             if ((ch = utf_nextu2(&utf_ptr)) == '[') {
1306                 /* arrayclass */
1307                 for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1308                                 *pos++ = *utf_ptr; /* copy text */
1309                         }
1310
1311             } else {
1312                         /* check for primitive types */
1313                         for (j = 0; j < PRIMITIVETYPE_COUNT; j++) {
1314                                 char *utf_pos   = utf_ptr - 1;
1315                                 char *primitive = primitivetype_table[j].wrapname;
1316
1317                                 /* compare text */
1318                                 while (utf_pos < utf_end(c->name)) {
1319                                         if (*utf_pos++ != *primitive++) goto nomatch;
1320                                 }
1321
1322                                 /* primitive type found */
1323                                 *pos++ = primitivetype_table[j].typesig;
1324                                 goto next_type;
1325
1326                         nomatch:
1327                         }
1328
1329                         /* no primitive type and no arrayclass, so must be object */
1330                         *pos++ = 'L';
1331
1332                         /* copy text */
1333                         for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1334                                 *pos++ = *utf_ptr;
1335                         }
1336
1337                         *pos++ = ';';
1338
1339                 next_type:
1340                 }
1341     }
1342
1343     *pos++ = ')';
1344
1345     if (retType) {
1346                 for (i = 0; i < strlen(retType); i++) {
1347                         *pos++ = retType[i];
1348                 }
1349     }
1350
1351     /* create utf-string */
1352     result = utf_new(buffer, (pos - buffer));
1353     MFREE(buffer, u1, buffer_size);
1354
1355     return result;
1356 }
1357
1358
1359 /******************************************************************************************
1360
1361         retrieve the next argument or returntype from a descriptor
1362         and return the corresponding class
1363
1364 *******************************************************************************************/
1365
1366 classinfo *get_type(char **utf_ptr,char *desc_end, bool skip)
1367 {
1368     classinfo *c = class_from_descriptor(*utf_ptr,desc_end,utf_ptr,
1369                                          (skip) ? CLASSLOAD_SKIP : CLASSLOAD_LOAD);
1370     if (!c)
1371         /* unknown type */
1372         panic("illegal descriptor");
1373
1374     if (skip) return NULL;
1375
1376     use_class_as_object(c);
1377     return c;
1378 }
1379
1380
1381 /******************************************************************************************
1382
1383         use the descriptor of a method to generate a java/lang/Class array
1384         which contains the classes of the parametertypes of the method
1385
1386 *******************************************************************************************/
1387
1388 java_objectarray* get_parametertypes(methodinfo *m)
1389 {
1390     utf  *descr    =  m->descriptor;    /* method-descriptor */
1391     char *utf_ptr  =  descr->text;      /* current position in utf-text */
1392     char *desc_end =  utf_end(descr);   /* points behind utf string     */
1393     java_objectarray* result;
1394     int parametercount = 0;
1395     int i;
1396
1397     /* skip '(' */
1398     utf_nextu2(&utf_ptr);
1399
1400     /* determine number of parameters */
1401     while ( *utf_ptr != ')' ) {
1402         get_type(&utf_ptr,desc_end,true);
1403         parametercount++;
1404     }
1405
1406     /* create class-array */
1407     result = builtin_anewarray(parametercount, class_java_lang_Class);
1408
1409     utf_ptr  =  descr->text;
1410     utf_nextu2(&utf_ptr);
1411
1412     /* get returntype classes */
1413     for (i = 0; i < parametercount; i++)
1414             result->data[i] = (java_objectheader *) get_type(&utf_ptr,desc_end, false);
1415
1416     return result;
1417 }
1418
1419
1420
1421
1422
1423 /******************************************************************************************
1424
1425         get the exceptions which can be thrown by a method
1426
1427 *******************************************************************************************/
1428
1429 java_objectarray* get_exceptiontypes(methodinfo *m) {
1430     u2 exccount=m->thrownexceptionscount;
1431     u2 i;
1432     java_objectarray *result;
1433     /* create class-array */
1434     result = builtin_anewarray(exccount, class_java_lang_Class);
1435     for (i=0;i<exccount;i++) {
1436         java_objectheader *oh=(java_objectheader*)(m->thrownexceptions[i]);
1437         use_class_as_object(oh);
1438         result->data[i]=oh;
1439     }
1440     return result;
1441 }
1442
1443
1444
1445
1446
1447 /******************************************************************************************
1448
1449         get the returntype class of a method
1450
1451 *******************************************************************************************/
1452
1453 classinfo *get_returntype(methodinfo *m)
1454 {
1455         char *utf_ptr;   /* current position in utf-text */
1456         char *desc_end;  /* points behind utf string     */
1457         utf *desc = m->descriptor; /* method-descriptor  */
1458
1459         utf_ptr  = desc->text;
1460         desc_end = utf_end(desc);
1461
1462         /* ignore parametertypes */
1463         while ((utf_ptr<desc_end) && utf_nextu2(&utf_ptr)!=')')
1464                 /* skip */ ;
1465
1466         return get_type(&utf_ptr,desc_end, false);
1467 }
1468
1469
1470 /*****************************************************************************/
1471 /*****************************************************************************/
1472
1473
1474 /*--------------------------------------------------------*/
1475 void printNativeCall(nativeCall nc) {
1476   int i,j;
1477
1478   printf("\n%s's Native Methods call:\n",nc.classname); fflush(stdout);
1479   for (i=0; i<nc.methCnt; i++) {
1480       printf("\tMethod=%s %s\n",nc.methods[i].methodname, nc.methods[i].descriptor);fflush(stdout);
1481
1482     for (j=0; j<nc.callCnt[i]; j++) {
1483         printf("\t\t<%i,%i>aCalled = %s %s %s\n",i,j,
1484         nc.methods[i].methodCalls[j].classname,
1485         nc.methods[i].methodCalls[j].methodname,
1486         nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1487       }
1488     }
1489   printf("-+++++--------------------\n");fflush(stdout);
1490 }
1491
1492 /*--------------------------------------------------------*/
1493 void printCompNativeCall(nativeCompCall nc) {
1494   int i,j;
1495   printf("printCompNativeCall BEGIN\n");fflush(stdout);
1496   printf("\n%s's Native Comp Methods call:\n",nc.classname->text);fflush(stdout);
1497   utf_display(nc.classname); fflush(stdout);
1498
1499   for (i=0; i<nc.methCnt; i++) {
1500     printf("\tMethod=%s %s\n",nc.methods[i].methodname->text,nc.methods[i].descriptor->text);fflush(stdout);
1501     utf_display(nc.methods[i].methodname); fflush(stdout);
1502     utf_display(nc.methods[i].descriptor);fflush(stdout);
1503     printf("\n");fflush(stdout);
1504
1505     for (j=0; j<nc.callCnt[i]; j++) {
1506       printf("\t\t<%i,%i>bCalled = ",i,j);fflush(stdout);
1507         utf_display(nc.methods[i].methodCalls[j].classname);fflush(stdout);
1508         utf_display(nc.methods[i].methodCalls[j].methodname); fflush(stdout);
1509         utf_display(nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1510         printf("\n");fflush(stdout);
1511       }
1512     }
1513 printf("---------------------\n");fflush(stdout);
1514 }
1515
1516
1517 /*--------------------------------------------------------*/
1518 classMeth findNativeMethodCalls(utf *c, utf *m, utf *d )
1519 {
1520     int i = 0;
1521     int j = 0;
1522     int cnt = 0;
1523     classMeth mc;
1524     mc.i_class = i;
1525     mc.j_method = j;
1526     mc.methCnt = cnt;
1527
1528     return mc;
1529 }
1530
1531 /*--------------------------------------------------------*/
1532 nativeCall* findNativeClassCalls(char *aclassname ) {
1533 int i;
1534
1535 for (i=0;i<NATIVECALLSSIZE; i++) {
1536    /* convert table to utf later to speed up search */
1537    if (strcmp(nativeCalls[i].classname, aclassname) == 0)
1538         return &nativeCalls[i];
1539    }
1540
1541 return NULL;
1542 }
1543 /*--------------------------------------------------------*/
1544 /*--------------------------------------------------------*/
1545 void utfNativeCall(nativeCall nc, nativeCompCall *ncc) {
1546   int i,j;
1547
1548
1549   ncc->classname = utf_new_char(nc.classname);
1550   ncc->methCnt = nc.methCnt;
1551
1552   for (i=0; i<nc.methCnt; i++) {
1553     ncc->methods[i].methodname = utf_new_char(nc.methods[i].methodname);
1554     ncc->methods[i].descriptor = utf_new_char(nc.methods[i].descriptor);
1555     ncc->callCnt[i] = nc.callCnt[i];
1556
1557     for (j=0; j<nc.callCnt[i]; j++) {
1558
1559         ncc->methods[i].methodCalls[j].classname  = utf_new_char(nc.methods[i].methodCalls[j].classname);
1560
1561         if (strcmp("", nc.methods[i].methodCalls[j].methodname) != 0) {
1562           ncc->methods[i].methodCalls[j].methodname = utf_new_char(nc.methods[i].methodCalls[j].methodname);
1563           ncc->methods[i].methodCalls[j].descriptor = utf_new_char(nc.methods[i].methodCalls[j].descriptor);
1564           }
1565         else {
1566           ncc->methods[i].methodCalls[j].methodname = NULL;
1567           ncc->methods[i].methodCalls[j].descriptor = NULL;
1568           }
1569       }
1570     }
1571 }
1572
1573
1574
1575 /*--------------------------------------------------------*/
1576
1577 bool natcall2utf(bool natcallcompdone) {
1578 int i;
1579
1580 if (natcallcompdone)
1581         return true;
1582
1583 for (i=0;i<NATIVECALLSSIZE; i++) {
1584    utfNativeCall  (nativeCalls[i], &nativeCompCalls[i]);
1585    }
1586
1587 return true;
1588 }
1589
1590 /*--------------------------------------------------------*/
1591
1592
1593 java_objectarray *builtin_asm_createclasscontextarray(classinfo **end,classinfo **start) {
1594 #warning platform dependend
1595         java_objectarray *tmpArray;
1596         int i;
1597         classinfo **current;
1598         classinfo *c;
1599         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1600 /*      printf("end %p, start %p, size %ld\n",end,start,size);*/
1601         if (!class_java_lang_Class)
1602                 class_java_lang_Class = class_new(utf_new_char ("java/lang/Class"));
1603         if (!class_java_lang_SecurityManager)
1604                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1605         if (size>0) {
1606                 if (start==class_java_lang_SecurityManager) {
1607                         size--;
1608                         start--;
1609                 }
1610         }
1611         tmpArray=builtin_newarray(size, class_array_of(class_java_lang_Class)->vftbl);
1612
1613         for(i=0,current=start;i<size;i++,current--) {
1614                 c=*current;
1615 /*              printf("%d\n",i);
1616                 utf_display(c->name);*/
1617                 use_class_as_object(c);
1618                 tmpArray->data[i]=c;
1619         }
1620         return tmpArray;
1621
1622 }
1623
1624 java_lang_ClassLoader *builtin_asm_getclassloader(classinfo **end,classinfo **start) {
1625 #warning platform dependend
1626         int i;
1627         classinfo **current;
1628         classinfo *c;
1629         classinfo *privilegedAction;
1630         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1631 /*      log_text("builtin_asm_getclassloader");
1632         printf("end %p, start %p, size %ld\n",end,start,size);*/
1633
1634         if (!class_java_lang_SecurityManager)
1635                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1636         if (size>0) {
1637                 if (start==class_java_lang_SecurityManager) {
1638                         size--;
1639                         start--;
1640                 }
1641         }
1642
1643         privilegedAction=class_new(utf_new_char("java/security/PrivilegedAction"));
1644
1645         for(i=0,current=start;i<size;i++,current--) {
1646                 c=*current;
1647                 if (c==privilegedAction) return NULL;
1648                 if (c->classloader) return c->classloader;
1649         }
1650         return NULL;
1651
1652
1653
1654
1655 /*
1656         log_text("Java_java_lang_VMSecurityManager_currentClassLoader");
1657         init_systemclassloader();
1658
1659         return SystemClassLoader;*/
1660 }
1661
1662 /*
1663  * These are local overrides for various environment variables in Emacs.
1664  * Please do not remove this and leave it at the end of the file, where
1665  * Emacs will automagically detect them.
1666  * ---------------------------------------------------------------------
1667  * Local variables:
1668  * mode: c
1669  * indent-tabs-mode: t
1670  * c-basic-offset: 4
1671  * tab-width: 4
1672  * End:
1673  */