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 934 2004-03-05 23:20:53Z twisti $
  35
  36 */
  37
  38
  39 #include <stdlib.h>
  40 #include <unistd.h>
  41 #include <time.h>
  42 #include <math.h>
  43 #include <string.h>
  44 #include <assert.h>
  45 #include <sys/time.h>
  46 #include <utime.h>
  47
  48 #include "config.h"
  49 #include "global.h"
  50 #include "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
 303 java_objectheader *new_exception_message(char *classname, char *message)
 304 {
 305         classinfo *c = class_new(utf_new_char(classname));
 306
 307         if (!c->linked)
 308                 panic("exception class not linked");
 309
 310         return native_new_and_init_string(c, javastring_new_char(message));
 311 }
 312
 313
 314 java_objectheader *new_exception_int(char *classname, s4 i)
 315 {
 316         classinfo *c = class_new(utf_new_char(classname));
 317
 318         if (!c->linked)
 319                 panic("exception class not linked");
 320
 321         return native_new_and_init_int(c, i);
 322 }
 323
 324
 325 /*********************** function: native_loadclasses **************************
 326
 327         load classes required for native methods
 328
 329 *******************************************************************************/
 330
 331 void native_loadclasses()
 332 {
 333         static int classesLoaded=0; /*temporary hack JoWenn*/
 334         if (classesLoaded) return;
 335         classesLoaded = 1;
 336 /*      log_text("loadclasses entered");*/
 337
 338
 339         /*class_java_lang_System =*/
 340         (void) class_new(utf_new_char("java/lang/VMClass"));/*JoWenn*/
 341         (void) class_new(utf_new_char("java/lang/Class"));/*JoWenn*/
 342
 343         /* class_new adds the class to the list of classes to be loaded */
 344         if (!class_java_lang_Cloneable)
 345                 class_java_lang_Cloneable =
 346                         class_new(utf_new_char("java/lang/Cloneable"));
 347 /*      log_text("loadclasses: class_java_lang_Cloneable has been initialized");*/
 348         class_java_lang_CloneNotSupportedException =
 349                 class_new(utf_new_char("java/lang/CloneNotSupportedException"));
 350         if (!class_java_lang_Class)
 351                 class_java_lang_Class =
 352                         class_new(utf_new_char("java/lang/Class"));
 353         class_java_io_IOException =
 354                 class_new(utf_new_char("java/io/IOException"));
 355         class_java_io_FileNotFoundException =
 356                 class_new(utf_new_char("java/io/FileNotFoundException"));
 357         class_java_lang_NoClassDefFoundError =
 358                 class_new(utf_new_char("java/lang/NoClassDefFoundError"));
 359         class_java_lang_ClassNotFoundException =
 360                 class_new(utf_new_char("java/lang/ClassNotFoundException"));
 361         class_java_lang_LinkageError =
 362                 class_new(utf_new_char("java/lang/LinkageError"));
 363         class_java_lang_InstantiationException =
 364                 class_new(utf_new_char("java/lang/InstantiationException"));
 365         class_java_lang_NoSuchMethodError =
 366                 class_new(utf_new_char("java/lang/NoSuchMethodError"));
 367         class_java_lang_NoSuchFieldError =
 368                 class_new(utf_new_char("java/lang/NoSuchFieldError"));
 369         class_java_lang_ClassFormatError =
 370                 class_new(utf_new_char("java/lang/ClassFormatError"));
 371         class_java_io_SyncFailedException =
 372                 class_new(utf_new_char("java/io/SyncFailedException"));
 373
 374 /*      log_text("native_loadclasses: class_new(\"java/lang/ClassLoader\")");           */
 375         class_java_lang_ClassLoader =
 376                 class_new(utf_new_char("java/lang/ClassLoader"));
 377         class_gnu_java_lang_SystemClassLoader =
 378                 class_new(utf_new_char("gnu/java/lang/SystemClassLoader"));
 379
 380 /*      log_text("native_loadclasses: class_new(\"java/security/PrivilegedActionException\")");         */
 381         class_java_security_PrivilegedActionException =
 382                 class_new(utf_new_char("java/security/PrivilegedActionException"));
 383
 384         loader_load_sysclass(&class_java_net_UnknownHostException,
 385                                                  utf_new_char("java/net/UnknownHostException"));
 386         loader_load_sysclass(&class_java_net_SocketException,
 387                                                  utf_new_char("java/net/SocketException"));
 388
 389         class_java_lang_IllegalArgumentException =
 390                 class_new(utf_new_char("java/lang/IllegalArgumentException"));
 391         class_java_lang_ArrayIndexOutOfBoundsException =
 392                 class_new(utf_new_char("java/lang/ArrayIndexOutOfBoundsException"));
 393         class_java_lang_NoSuchFieldException =
 394                 class_new(utf_new_char("java/lang/NoSuchFieldException"));
 395         class_java_lang_NoSuchMethodException =
 396                 class_new(utf_new_char("java/lang/NoSuchMethodException"));
 397
 398         /* load classes for wrapping primitive types */
 399         class_java_lang_Double    = class_new(utf_new_char("java/lang/Double"));
 400         class_init(class_java_lang_Double);
 401
 402         class_java_lang_Float     = class_new(utf_new_char("java/lang/Float"));
 403         class_java_lang_Character =     class_new(utf_new_char("java/lang/Character"));
 404         class_java_lang_Integer   = class_new(utf_new_char("java/lang/Integer"));
 405         class_java_lang_Long      = class_new(utf_new_char("java/lang/Long"));
 406         class_java_lang_Byte      = class_new(utf_new_char("java/lang/Byte"));
 407         class_java_lang_Short     = class_new(utf_new_char("java/lang/Short"));
 408         class_java_lang_Boolean   = class_new(utf_new_char("java/lang/Boolean"));
 409         class_java_lang_Void      = class_new(utf_new_char("java/lang/Void"));
 410
 411         classesLoaded = 1;
 412 }
 413
 414
 415 /*************** adds a class to the vector of loaded classes ****************/
 416
 417 void systemclassloader_addclass(classinfo *c)
 418 {
 419         methodinfo *m;
 420
 421         /* find method addClass of java.lang.ClassLoader */
 422         m = class_resolvemethod(class_java_lang_ClassLoader,
 423                                                         utf_new_char("addClass"),
 424                                                         utf_new_char("(Ljava/lang/Class;)")
 425                                                         );
 426
 427         if (!m)
 428                 panic("warning: cannot initialize classloader");
 429
 430         /* prepare class to be passed as argument */
 431         use_class_as_object (c);
 432
 433         /* call 'addClass' */
 434         asm_calljavafunction(m,
 435                                                  (java_objectheader*) SystemClassLoader,
 436                                                  (java_objectheader*) c,
 437                                                  NULL,
 438                                                  NULL
 439                                                  );
 440 }
 441
 442
 443 /*************** adds a library to the vector of loaded libraries *************/
 444
 445 void systemclassloader_addlibrary(java_objectheader *o)
 446 {
 447         log_text("systemclassloader_addlibrary");
 448 }
 449
 450
 451 /*****************************************************************************
 452
 453         create systemclassloader object and initialize instance fields
 454
 455 ******************************************************************************/
 456
 457 void init_systemclassloader()
 458 {
 459         if (!SystemClassLoader) {
 460                 native_loadclasses();
 461                 log_text("Initializing new system class loader");
 462                 /* create object and call initializer */
 463                 SystemClassLoader = (java_lang_ClassLoader *) native_new_and_init(class_gnu_java_lang_SystemClassLoader);/*class_java_lang_ClassLoader);*/
 464
 465                 /* systemclassloader has no parent */
 466                 SystemClassLoader->parent      = NULL;
 467                 SystemClassLoader->initialized = true;
 468         }
 469         log_text("leaving system class loader");
 470 }
 471
 472
 473 /********************* add loaded library name  *******************************/
 474
 475 void systemclassloader_addlibname(java_objectheader *o)
 476 {
 477         methodinfo *m;
 478         jfieldID id;
 479
 480         m = class_resolvemethod(loader_load_sysclass(NULL, utf_new_char("java/util/Vector")),
 481                                                         utf_new_char("addElement"),
 482                                                         utf_new_char("(Ljava/lang/Object;)V"));
 483
 484         if (!m) panic("cannot initialize classloader");
 485
 486         id = envTable.GetStaticFieldID(&env,
 487                                                                    class_java_lang_ClassLoader,
 488                                                                    "loadedLibraryNames",
 489                                                                    "Ljava/util/Vector;");
 490
 491         if (!id) panic("can not access ClassLoader");
 492
 493         asm_calljavafunction(m,
 494                                                  envTable.GetStaticObjectField(&env, class_java_lang_ClassLoader, id),
 495                                                  o,
 496                                                  NULL,
 497                                                  NULL);
 498 }
 499
 500
 501 /********************* function: native_setclasspath **************************/
 502
 503 void native_setclasspath(char *path)
 504 {
 505         /* set searchpath for classfiles */
 506         classpath = path;
 507 }
 508
 509
 510 /*********************** Function: native_findfunction *************************
 511
 512         Looks up a method (must have the same class name, method name, descriptor
 513         and 'static'ness) and returns a function pointer to it.
 514         Returns: function pointer or NULL (if there is no such method)
 515
 516         Remark: For faster operation, the names/descriptors are converted from C
 517                 strings to Unicode the first time this function is called.
 518
 519 *******************************************************************************/
 520
 521 functionptr native_findfunction(utf *cname, utf *mname,
 522                                                                 utf *desc, bool isstatic)
 523 {
 524         int i;
 525         /* entry of table for fast string comparison */
 526         struct nativecompref *n;
 527         /* for warning message if no function is found */
 528         char *buffer;
 529         int buffer_len;
 530
 531         isstatic = isstatic ? true : false;
 532
 533         if (!nativecompdone) {
 534                 for (i = 0; i < NATIVETABLESIZE; i++) {
 535                         nativecomptable[i].classname  =
 536                                 utf_new_char(nativetable[i].classname);
 537                         nativecomptable[i].methodname =
 538                                 utf_new_char(nativetable[i].methodname);
 539                         nativecomptable[i].descriptor =
 540                                 utf_new_char(nativetable[i].descriptor);
 541                         nativecomptable[i].isstatic   =
 542                                 nativetable[i].isstatic;
 543                         nativecomptable[i].func       =
 544                                 nativetable[i].func;
 545                 }
 546                 nativecompdone = true;
 547         }
 548
 549 #ifdef JOWENN_DEBUG
 550         buffer_len =
 551                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 552
 553         buffer = MNEW(char, buffer_len);
 554
 555         strcpy(buffer, "searching matching function in native table:");
 556         utf_sprint(buffer+strlen(buffer), mname);
 557         strcpy(buffer+strlen(buffer), ": ");
 558         utf_sprint(buffer+strlen(buffer), desc);
 559         strcpy(buffer+strlen(buffer), " for class ");
 560         utf_sprint(buffer+strlen(buffer), cname);
 561
 562         log_text(buffer);
 563
 564         MFREE(buffer, char, buffer_len);
 565 #endif
 566
 567         for (i = 0; i < NATIVETABLESIZE; i++) {
 568                 n = &(nativecomptable[i]);
 569
 570                 if (cname == n->classname && mname == n->methodname &&
 571                     desc == n->descriptor && isstatic == n->isstatic)
 572                         return n->func;
 573 #ifdef JOWENN_DEBUG
 574                         else {
 575                                 if (cname == n->classname && mname == n->methodname )  log_text("static and descriptor mismatch");
 576
 577                                 else {
 578                                         buffer_len =
 579                                           utf_strlen(n->classname) + utf_strlen(n->methodname) + utf_strlen(n->descriptor) + 64;
 580
 581                                         buffer = MNEW(char, buffer_len);
 582
 583                                         strcpy(buffer, "comparing with:");
 584                                         utf_sprint(buffer+strlen(buffer), n->methodname);
 585                                         strcpy (buffer+strlen(buffer), ": ");
 586                                         utf_sprint(buffer+strlen(buffer), n->descriptor);
 587                                         strcpy(buffer+strlen(buffer), " for class ");
 588                                         utf_sprint(buffer+strlen(buffer), n->classname);
 589
 590                                         log_text(buffer);
 591
 592                                         MFREE(buffer, char, buffer_len);
 593                                 }
 594                         }
 595 #endif
 596         }
 597
 598
 599         /* no function was found, display warning */
 600
 601         buffer_len =
 602                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 603
 604         buffer = MNEW(char, buffer_len);
 605
 606         strcpy(buffer, "warning: native function ");
 607         utf_sprint(buffer + strlen(buffer), mname);
 608         strcpy(buffer + strlen(buffer), ": ");
 609         utf_sprint(buffer + strlen(buffer), desc);
 610         strcpy(buffer + strlen(buffer), " not found in class ");
 611         utf_sprint(buffer + strlen(buffer), cname);
 612
 613         log_text(buffer);
 614
 615         MFREE(buffer, char, buffer_len);
 616
 617         exit(1);
 618
 619         /* keep compiler happy */
 620         return NULL;
 621 }
 622
 623
 624 /********************** function: javastring_new *******************************
 625
 626         creates a new object of type java/lang/String with the text of
 627         the specified utf8-string
 628
 629         return: pointer to the string or NULL if memory is exhausted.
 630
 631 *******************************************************************************/
 632
 633 /*  java_objectheader *javastring_new(utf *u) */
 634 java_lang_String *javastring_new(utf *u)
 635 {
 636         char *utf_ptr = u->text;        /* current utf character in utf string    */
 637         int utflength = utf_strlen(u);  /* length of utf-string if uncompressed   */
 638         java_lang_String *s;                /* result-string                          */
 639         java_chararray *a;
 640         s4 i;
 641
 642 /*      log_text("javastring_new");*/
 643
 644         s = (java_lang_String*) builtin_new(class_java_lang_String);
 645         a = builtin_newarray_char(utflength);
 646
 647         /* javastring or character-array could not be created */
 648         if ((!a) || (!s))
 649                 return NULL;
 650
 651         /* decompress utf-string */
 652         for (i = 0; i < utflength; i++)
 653                 a->data[i] = utf_nextu2(&utf_ptr);
 654
 655         /* set fields of the javastring-object */
 656         s->value  = a;
 657         s->offset = 0;
 658         s->count  = utflength;
 659
 660 /*      return (java_objectheader*) s; */
 661         return s;
 662 }
 663
 664
 665 /********************** function: javastring_new_char **************************
 666
 667         creates a new java/lang/String object which contains the convertet
 668         C-string passed via text.
 669
 670         return: the object pointer or NULL if memory is exhausted.
 671
 672 *******************************************************************************/
 673
 674 java_lang_String *javastring_new_char(char *text)
 675 {
 676         s4 i;
 677         s4 len = strlen(text); /* length of the string */
 678         java_lang_String *s;   /* result-string */
 679         java_chararray *a;
 680
 681         /*log_text("javastring_new_char");*/
 682         s = (java_lang_String *) builtin_new(class_java_lang_String);
 683         a = builtin_newarray_char(len);
 684
 685         /* javastring or character-array could not be created */
 686         if ((!a) || (!s))
 687                 return NULL;
 688
 689         /* copy text */
 690         for (i = 0; i < len; i++)
 691                 a->data[i] = text[i];
 692
 693         /* set fields of the javastring-object */
 694         s->value  = a;
 695         s->offset = 0;
 696         s->count  = len;
 697
 698 /*      return (java_objectheader*) s; */
 699         return s;
 700 }
 701
 702
 703 /************************* function javastring_tochar **************************
 704
 705         converts a Java string into a C string.
 706
 707         return: pointer to C string
 708
 709         Caution: every call of this function overwrites the previous string !!!
 710
 711 *******************************************************************************/
 712
 713 static char stringbuffer[MAXSTRINGSIZE];
 714
 715 char *javastring_tochar(java_objectheader *so)
 716 {
 717         java_lang_String *s = (java_lang_String *) so;
 718         java_chararray *a;
 719         s4 i;
 720
 721         if (!s)
 722                 return "";
 723
 724         a = s->value;
 725
 726         if (!a)
 727                 return "";
 728
 729         if (s->count > MAXSTRINGSIZE)
 730                 return "";
 731
 732         for (i = 0; i < s->count; i++)
 733                 stringbuffer[i] = a->data[s->offset + i];
 734
 735         stringbuffer[i] = '\0';
 736
 737         return stringbuffer;
 738 }
 739
 740
 741 /****************** function class_findfield_approx ****************************
 742
 743         searches in 'classinfo'-structure for a field with the
 744         specified name
 745
 746 *******************************************************************************/
 747
 748 fieldinfo *class_findfield_approx(classinfo *c, utf *name)
 749 {
 750         s4 i;
 751         for (i = 0; i < c->fieldscount; i++) {
 752                 /* compare field names */
 753                 if ((c->fields[i].name == name))
 754                         return &(c->fields[i]);
 755         }
 756
 757         /* field was not found, raise exception */
 758         *exceptionptr = native_new_and_init(class_java_lang_NoSuchFieldException);
 759
 760         return NULL;
 761 }
 762
 763 s4 class_findfield_index_approx (classinfo *c, utf *name)
 764 {
 765         s4 i;
 766         for (i = 0; i < c->fieldscount; i++) {
 767                 /* compare field names */
 768                 if ((c->fields[i].name == name))
 769                         return i;
 770                 }
 771
 772         /* field was not found, raise exception */
 773         *exceptionptr = native_new_and_init(class_java_lang_NoSuchFieldException);
 774         return -1;
 775 }
 776
 777
 778 /********************** function: native_new_and_init *************************
 779
 780         Creates a new object on the heap and calls the initializer.
 781         Returns the object pointer or NULL if memory is exhausted.
 782
 783 *******************************************************************************/
 784
 785 java_objectheader *native_new_and_init(classinfo *c)
 786 {
 787         methodinfo *m;
 788         java_objectheader *o;
 789
 790         /* if c==NULL it is probebly because loader_load failed */
 791         if (!c) return *exceptionptr;
 792
 793         o = builtin_new(c);          /* create object          */
 794
 795         /*
 796         printf("native_new_and_init ");
 797         utf_display(c->name);
 798         printf("\n");
 799         */
 800         if (!o) return NULL;
 801         /* printf("o!=NULL\n"); */
 802         /* find initializer */
 803
 804         m = class_findmethod(c,
 805                                                  utf_new_char("<init>"),
 806                                                  utf_new_char("()V"));
 807
 808         if (!m) {                                       /* initializer not found  */
 809                 if (verbose) {
 810                         char logtext[MAXLOGTEXT];
 811                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 812                         utf_sprint(logtext + strlen(logtext), c->name);
 813                         log_text(logtext);
 814                 }
 815                 return o;
 816         }
 817
 818         /* call initializer */
 819
 820         asm_calljavafunction(m, o, NULL, NULL, NULL);
 821
 822         return o;
 823 }
 824
 825
 826 java_objectheader *native_new_and_init_string(classinfo *c, java_lang_String *s)
 827 {
 828         methodinfo *m;
 829         java_objectheader *o;
 830
 831         /* if c==NULL it is probebly because loader_load failed */
 832         if (!c) return *exceptionptr;
 833
 834         o = builtin_new(c);          /* create object          */
 835
 836         if (!o) return NULL;
 837
 838         /* find initializer */
 839
 840         m = class_findmethod(c,
 841                                                  utf_new_char("<init>"),
 842                                                  utf_new_char("(Ljava/lang/String;)V"));
 843
 844         if (!m) {                                       /* initializer not found  */
 845                 if (verbose) {
 846                         char logtext[MAXLOGTEXT];
 847                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 848                         utf_sprint(logtext + strlen(logtext), c->name);
 849                         log_text(logtext);
 850                 }
 851                 return o;
 852         }
 853
 854         /* call initializer */
 855
 856         asm_calljavafunction(m, o, s, NULL, NULL);
 857
 858         return o;
 859 }
 860
 861
 862 java_objectheader *native_new_and_init_int(classinfo *c, s4 i)
 863 {
 864         methodinfo *m;
 865         java_objectheader *o;
 866
 867         /* if c == NULL it is probebly because loader_load failed */
 868         if (!c) return *exceptionptr;
 869
 870         o = builtin_new(c);          /* create object          */
 871
 872         if (!o) return NULL;
 873
 874         /* find initializer */
 875
 876         m = class_findmethod(c,
 877                                                  utf_new_char("<init>"),
 878                                                  utf_new_char("(I)V"));
 879
 880         if (!m) {                                       /* initializer not found  */
 881                 if (verbose) {
 882                         char logtext[MAXLOGTEXT];
 883                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 884                         utf_sprint(logtext + strlen(logtext), c->name);
 885                         log_text(logtext);
 886                 }
 887                 return o;
 888         }
 889
 890         /* call initializer */
 891
 892         asm_calljavafunction(m, o, i, NULL, NULL);
 893
 894         return o;
 895 }
 896
 897
 898 /******************** function: stringtable_update ****************************
 899
 900         traverses the javastring hashtable and sets the vftbl-entries of
 901         javastrings which were temporarily set to NULL, because
 902         java.lang.Object was not yet loaded
 903
 904 *******************************************************************************/
 905
 906 void stringtable_update ()
 907 {
 908         java_lang_String *js;
 909         java_chararray *a;
 910         literalstring *s;       /* hashtable entry */
 911         int i;
 912
 913         for (i = 0; i < string_hash.size; i++) {
 914                 s = string_hash.ptr[i];
 915                 if (s) {
 916                         while (s) {
 917
 918                                 js = (java_lang_String *) s->string;
 919
 920                                 if (!js || !js->value)
 921                                         /* error in hashtable found */
 922                                         panic("invalid literalstring in hashtable");
 923
 924                                 a = js->value;
 925
 926                                 if (!js->header.vftbl)
 927                                         /* vftbl of javastring is NULL */
 928                                         js->header.vftbl = class_java_lang_String -> vftbl;
 929
 930                                 if (!a->header.objheader.vftbl)
 931                                         /* vftbl of character-array is NULL */
 932                                         a->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
 933
 934                                 /* follow link in external hash chain */
 935                                 s = s->hashlink;
 936                         }
 937                 }
 938         }
 939 }
 940
 941
 942 /************************* function: u2_utflength ***************************
 943
 944         returns the utf length in bytes of a u2 array
 945
 946 *****************************************************************************/
 947
 948 u4 u2_utflength(u2 *text, u4 u2_length)
 949 {
 950         u4 result_len =  0;  /* utf length in bytes  */
 951         u2 ch;               /* current unicode character */
 952         u4 len;
 953
 954         for (len = 0; len < u2_length; len++) {
 955                 /* next unicode character */
 956                 ch = *text++;
 957
 958                 /* determine bytes required to store unicode character as utf */
 959                 if (ch && (ch < 0x80))
 960                         result_len++;
 961                 else if (ch < 0x800)
 962                         result_len += 2;
 963                 else
 964                         result_len += 3;
 965         }
 966
 967     return result_len;
 968 }
 969
 970
 971 /********************* function: utf_new_u2 ***********************************
 972
 973         make utf symbol from u2 array,
 974         if isclassname is true '.' is replaced by '/'
 975
 976 *******************************************************************************/
 977
 978 utf *utf_new_u2(u2 *unicode_pos, u4 unicode_length, bool isclassname)
 979 {
 980         char *buffer; /* memory buffer for  unicode characters */
 981         char *pos;    /* pointer to current position in buffer */
 982         u4 left;      /* unicode characters left */
 983         u4 buflength; /* utf length in bytes of the u2 array  */
 984         utf *result;  /* resulting utf-string */
 985         int i;
 986
 987         /* determine utf length in bytes and allocate memory */
 988         /* printf("utf_new_u2: unicode_length=%d\n",unicode_length);            */
 989         buflength = u2_utflength(unicode_pos, unicode_length);
 990         buffer    = MNEW(char, buflength);
 991
 992         /* memory allocation failed */
 993         if (!buffer) {
 994                 printf("length: %d\n",buflength);
 995                 log_text("utf_new_u2:buffer==NULL");
 996         }
 997
 998         left = buflength;
 999         pos  = buffer;
1000
1001         for (i = 0; i++ < unicode_length; unicode_pos++) {
1002                 /* next unicode character */
1003                 u2 c = *unicode_pos;
1004
1005                 if ((c != 0) && (c < 0x80)) {
1006                         /* 1 character */
1007                         left--;
1008                 if ((int) left < 0) break;
1009                         /* convert classname */
1010                         if (isclassname && c == '.')
1011                                 *pos++ = '/';
1012                         else
1013                                 *pos++ = (char) c;
1014
1015                 } else if (c < 0x800) {
1016                         /* 2 characters */
1017                 unsigned char high = c >> 6;
1018                 unsigned char low  = c & 0x3F;
1019                         left = left - 2;
1020                 if ((int) left < 0) break;
1021                 *pos++ = high | 0xC0;
1022                 *pos++ = low  | 0x80;
1023
1024                 } else {
1025                 /* 3 characters */
1026                 char low  = c & 0x3f;
1027                 char mid  = (c >> 6) & 0x3F;
1028                 char high = c >> 12;
1029                         left = left - 3;
1030                 if ((int) left < 0) break;
1031                 *pos++ = high | 0xE0;
1032                 *pos++ = mid  | 0x80;
1033                 *pos++ = low  | 0x80;
1034                 }
1035         }
1036
1037         /* insert utf-string into symbol-table */
1038         result = utf_new(buffer,buflength);
1039
1040         MFREE(buffer, char, buflength);
1041
1042         return result;
1043 }
1044
1045
1046 /********************* function: javastring_toutf *****************************
1047
1048         make utf symbol from javastring
1049
1050 *******************************************************************************/
1051
1052 utf *javastring_toutf(java_lang_String *string, bool isclassname)
1053 {
1054         java_lang_String *str = (java_lang_String *) string;
1055
1056 /*      printf("javastring_toutf offset: %d, len %d\n",str->offset, str->count); */
1057 /*      fflush(stdout); */
1058
1059         return utf_new_u2(str->value->data + str->offset, str->count, isclassname);
1060 }
1061
1062
1063 /********************* function: literalstring_u2 *****************************
1064
1065     searches for the javastring with the specified u2-array in
1066     the string hashtable, if there is no such string a new one is
1067     created
1068
1069     if copymode is true a copy of the u2-array is made
1070
1071 *******************************************************************************/
1072
1073 java_objectheader *literalstring_u2(java_chararray *a, u4 length, u4 offset,
1074                                                                         bool copymode)
1075 {
1076     literalstring *s;                /* hashtable element */
1077     java_lang_String *js;            /* u2-array wrapped in javastring */
1078     java_chararray *stringdata;      /* copy of u2-array */
1079     u4 key;
1080     u4 slot;
1081     u2 i;
1082
1083 //#define DEBUG_LITERALSTRING_U2
1084 #ifdef DEBUG_LITERALSTRING_U2
1085     printf("literalstring_u2: length=%d, offset=%d\n", length, offset);
1086         fflush(stdout);
1087 #endif
1088
1089     /* find location in hashtable */
1090     key  = unicode_hashkey(a->data + offset, length);
1091     slot = key & (string_hash.size - 1);
1092     s    = string_hash.ptr[slot];
1093
1094     while (s) {
1095                 js = (java_lang_String *) s->string;
1096
1097                 if (length == js->count) {
1098                         /* compare text */
1099                         for (i = 0; i < length; i++) {
1100                                 if (a->data[offset + i] != js->value->data[i])
1101                                         goto nomatch;
1102                         }
1103
1104                         /* string already in hashtable, free memory */
1105                         if (!copymode)
1106                                 lit_mem_free(a, sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10);
1107
1108 #ifdef DEBUG_LITERALSTRING_U2
1109                         printf("literalstring_u2: foundentry at %p\n", js);
1110                         utf_display(javastring_toutf(js, 0));
1111                         printf("\n\n");
1112                         fflush(stdout);
1113 #endif
1114                         return (java_objectheader *) js;
1115                 }
1116
1117         nomatch:
1118                 /* follow link in external hash chain */
1119                 s = s->hashlink;
1120     }
1121
1122     if (copymode) {
1123                 /* create copy of u2-array for new javastring */
1124                 u4 arraysize = sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10;
1125                 stringdata = lit_mem_alloc(arraysize);
1126 /*              memcpy(stringdata, a, arraysize); */
1127                 memcpy(&(stringdata->header), &(a->header), sizeof(java_arrayheader));
1128                 memcpy(&(stringdata->data), &(a->data) + offset, sizeof(u2) * (length - 1) + 10);
1129
1130     } else {
1131                 stringdata = a;
1132         }
1133
1134     /* location in hashtable found, complete arrayheader */
1135     stringdata->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1136     stringdata->header.size = length;
1137
1138     /* create new javastring */
1139     js = LNEW(java_lang_String);
1140     js->header.vftbl = class_java_lang_String->vftbl;
1141     js->value  = stringdata;
1142     js->offset = 0;
1143     js->count  = length;
1144
1145     /* create new literalstring */
1146     s = NEW(literalstring);
1147     s->hashlink = string_hash.ptr[slot];
1148     s->string   = (java_objectheader *) js;
1149     string_hash.ptr[slot] = s;
1150
1151     /* update numbe of hashtable entries */
1152     string_hash.entries++;
1153
1154     /* reorganization of hashtable */
1155     if (string_hash.entries > (string_hash.size * 2)) {
1156                 /* reorganization of hashtable, average length of
1157          the external chains is approx. 2                */
1158
1159                 u4 i;
1160                 literalstring *s;
1161                 hashtable newhash; /* the new hashtable */
1162
1163                 /* create new hashtable, double the size */
1164                 init_hashtable(&newhash, string_hash.size * 2);
1165                 newhash.entries = string_hash.entries;
1166
1167                 /* transfer elements to new hashtable */
1168                 for (i = 0; i < string_hash.size; i++) {
1169                         s = string_hash.ptr[i];
1170                         while (s) {
1171                                 literalstring *nexts = s->hashlink;
1172                                 js   = (java_lang_String *) s->string;
1173                                 slot = unicode_hashkey(js->value->data, js->count) & (newhash.size - 1);
1174
1175                                 s->hashlink = newhash.ptr[slot];
1176                                 newhash.ptr[slot] = s;
1177
1178                                 /* follow link in external hash chain */
1179                                 s = nexts;
1180                         }
1181                 }
1182
1183                 /* dispose old table */
1184                 MFREE(string_hash.ptr, void*, string_hash.size);
1185                 string_hash = newhash;
1186     }
1187
1188 #ifdef DEBUG_LITERALSTRING_U2
1189         printf("literalstring_u2: newly created at %p\n", js);
1190         utf_display(javastring_toutf(js, 0));
1191         printf("\n\n");
1192         fflush(stdout);
1193 #endif
1194
1195     return (java_objectheader *) js;
1196 }
1197
1198
1199 /******************** Function: literalstring_new *****************************
1200
1201     creates a new javastring with the text of the utf-symbol
1202     and inserts it into the string hashtable
1203
1204 *******************************************************************************/
1205
1206 java_objectheader *literalstring_new(utf *u)
1207 {
1208     char *utf_ptr = u->text;         /* pointer to current unicode character in utf string */
1209     u4 utflength  = utf_strlen(u);   /* length of utf-string if uncompressed */
1210     java_chararray *a;               /* u2-array constructed from utf string */
1211     u4 i;
1212 /*    log_text("literalstring_new"); */
1213 /*    utf_display(u);*/
1214     /*if (utflength==0) while (1) sleep(60);*/
1215 /*    log_text("------------------");    */
1216     /* allocate memory */
1217     a = lit_mem_alloc(sizeof(java_chararray) + sizeof(u2) * (utflength - 1) + 10);
1218
1219     /* convert utf-string to u2-array */
1220     for (i = 0; i < utflength; i++)
1221                 a->data[i] = utf_nextu2(&utf_ptr);
1222
1223     return literalstring_u2(a, utflength, 0, false);
1224 }
1225
1226
1227 /********************** function: literalstring_free **************************
1228
1229         removes a javastring from memory
1230
1231 ******************************************************************************/
1232
1233 void literalstring_free(java_objectheader* sobj)
1234 {
1235         java_lang_String *s = (java_lang_String *) sobj;
1236         java_chararray *a = s->value;
1237
1238         log_text("literalstring_free called");
1239
1240         /* dispose memory of java.lang.String object */
1241         LFREE(s, java_lang_String);
1242
1243         /* dispose memory of java-characterarray */
1244         LFREE(a, sizeof(java_chararray) + sizeof(u2) * (a->header.size - 1)); /* +10 ?? */
1245 }
1246
1247
1248 void copy_vftbl(vftbl **dest, vftbl *src)
1249 {
1250     *dest = src;
1251 #if 0
1252     /* XXX this kind of copying does not work (in the general
1253      * case). The interface tables would have to be copied, too. I
1254      * don't see why we should make a copy anyway. -Edwin
1255      */
1256         *dest = mem_alloc(sizeof(vftbl) + sizeof(methodptr)*(src->vftbllength-1));
1257         memcpy(*dest, src, sizeof(vftbl) - sizeof(methodptr));
1258         memcpy(&(*dest)->table, &src->table, src->vftbllength * sizeof(methodptr));
1259 #endif
1260 }
1261
1262
1263 /******************************************************************************************
1264
1265         creates method signature (excluding return type) from array of
1266         class-objects representing the parameters of the method
1267
1268 *******************************************************************************************/
1269
1270
1271 utf *create_methodsig(java_objectarray* types, char *retType)
1272 {
1273     char *buffer;       /* buffer for building the desciptor */
1274     char *pos;          /* current position in buffer */
1275     utf *result;        /* the method signature */
1276     u4 buffer_size = 3; /* minimal size=3: room for parenthesis and returntype */
1277     u4 i, j;
1278
1279     if (!types) return NULL;
1280
1281     /* determine required buffer-size */
1282     for (i = 0; i < types->header.size; i++) {
1283                 classinfo *c = (classinfo *) types->data[i];
1284                 buffer_size  = buffer_size + c->name->blength + 2;
1285     }
1286
1287     if (retType) buffer_size += strlen(retType);
1288
1289     /* allocate buffer */
1290     buffer = MNEW(u1, buffer_size);
1291     pos    = buffer;
1292
1293     /* method-desciptor starts with parenthesis */
1294     *pos++ = '(';
1295
1296     for (i = 0; i < types->header.size; i++) {
1297                 char ch;
1298
1299                 /* current argument */
1300             classinfo *c = (classinfo *) types->data[i];
1301
1302             /* current position in utf-text */
1303             char *utf_ptr = c->name->text;
1304
1305             /* determine type of argument */
1306             if ((ch = utf_nextu2(&utf_ptr)) == '[') {
1307                 /* arrayclass */
1308                 for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1309                                 *pos++ = *utf_ptr; /* copy text */
1310                         }
1311
1312             } else {
1313                         /* check for primitive types */
1314                         for (j = 0; j < PRIMITIVETYPE_COUNT; j++) {
1315                                 char *utf_pos   = utf_ptr - 1;
1316                                 char *primitive = primitivetype_table[j].wrapname;
1317
1318                                 /* compare text */
1319                                 while (utf_pos < utf_end(c->name)) {
1320                                         if (*utf_pos++ != *primitive++) goto nomatch;
1321                                 }
1322
1323                                 /* primitive type found */
1324                                 *pos++ = primitivetype_table[j].typesig;
1325                                 goto next_type;
1326
1327                         nomatch:
1328                         }
1329
1330                         /* no primitive type and no arrayclass, so must be object */
1331                         *pos++ = 'L';
1332
1333                         /* copy text */
1334                         for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1335                                 *pos++ = *utf_ptr;
1336                         }
1337
1338                         *pos++ = ';';
1339
1340                 next_type:
1341                 }
1342     }
1343
1344     *pos++ = ')';
1345
1346     if (retType) {
1347                 for (i = 0; i < strlen(retType); i++) {
1348                         *pos++ = retType[i];
1349                 }
1350     }
1351
1352     /* create utf-string */
1353     result = utf_new(buffer, (pos - buffer));
1354     MFREE(buffer, u1, buffer_size);
1355
1356     return result;
1357 }
1358
1359
1360 /******************************************************************************************
1361
1362         retrieve the next argument or returntype from a descriptor
1363         and return the corresponding class
1364
1365 *******************************************************************************************/
1366
1367 classinfo *get_type(char **utf_ptr,char *desc_end, bool skip)
1368 {
1369     classinfo *c = class_from_descriptor(*utf_ptr,desc_end,utf_ptr,
1370                                          (skip) ? CLASSLOAD_SKIP : CLASSLOAD_LOAD);
1371     if (!c)
1372         /* unknown type */
1373         panic("illegal descriptor");
1374
1375     if (skip) return NULL;
1376
1377     use_class_as_object(c);
1378     return c;
1379 }
1380
1381
1382 /******************************************************************************************
1383
1384         use the descriptor of a method to generate a java/lang/Class array
1385         which contains the classes of the parametertypes of the method
1386
1387 *******************************************************************************************/
1388
1389 java_objectarray* get_parametertypes(methodinfo *m)
1390 {
1391     utf  *descr    =  m->descriptor;    /* method-descriptor */
1392     char *utf_ptr  =  descr->text;      /* current position in utf-text */
1393     char *desc_end =  utf_end(descr);   /* points behind utf string     */
1394     java_objectarray* result;
1395     int parametercount = 0;
1396     int i;
1397
1398     /* skip '(' */
1399     utf_nextu2(&utf_ptr);
1400
1401     /* determine number of parameters */
1402     while ( *utf_ptr != ')' ) {
1403         get_type(&utf_ptr,desc_end,true);
1404         parametercount++;
1405     }
1406
1407     /* create class-array */
1408     result = builtin_anewarray(parametercount, class_java_lang_Class);
1409
1410     utf_ptr  =  descr->text;
1411     utf_nextu2(&utf_ptr);
1412
1413     /* get returntype classes */
1414     for (i = 0; i < parametercount; i++)
1415             result->data[i] = (java_objectheader *) get_type(&utf_ptr,desc_end, false);
1416
1417     return result;
1418 }
1419
1420
1421
1422
1423
1424 /******************************************************************************************
1425
1426         get the exceptions which can be thrown by a method
1427
1428 *******************************************************************************************/
1429
1430 java_objectarray* get_exceptiontypes(methodinfo *m)
1431 {
1432 }
1433
1434
1435
1436
1437
1438 /******************************************************************************************
1439
1440         get the returntype class of a method
1441
1442 *******************************************************************************************/
1443
1444 classinfo *get_returntype(methodinfo *m)
1445 {
1446         char *utf_ptr;   /* current position in utf-text */
1447         char *desc_end;  /* points behind utf string     */
1448         utf *desc = m->descriptor; /* method-descriptor  */
1449
1450         utf_ptr  = desc->text;
1451         desc_end = utf_end(desc);
1452
1453         /* ignore parametertypes */
1454         while ((utf_ptr<desc_end) && utf_nextu2(&utf_ptr)!=')')
1455                 /* skip */ ;
1456
1457         return get_type(&utf_ptr,desc_end, false);
1458 }
1459
1460
1461 /*****************************************************************************/
1462 /*****************************************************************************/
1463
1464
1465 /*--------------------------------------------------------*/
1466 void printNativeCall(nativeCall nc) {
1467   int i,j;
1468
1469   printf("\n%s's Native Methods call:\n",nc.classname); fflush(stdout);
1470   for (i=0; i<nc.methCnt; i++) {
1471       printf("\tMethod=%s %s\n",nc.methods[i].methodname, nc.methods[i].descriptor);fflush(stdout);
1472
1473     for (j=0; j<nc.callCnt[i]; j++) {
1474         printf("\t\t<%i,%i>aCalled = %s %s %s\n",i,j,
1475         nc.methods[i].methodCalls[j].classname,
1476         nc.methods[i].methodCalls[j].methodname,
1477         nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1478       }
1479     }
1480   printf("-+++++--------------------\n");fflush(stdout);
1481 }
1482
1483 /*--------------------------------------------------------*/
1484 void printCompNativeCall(nativeCompCall nc) {
1485   int i,j;
1486   printf("printCompNativeCall BEGIN\n");fflush(stdout);
1487   printf("\n%s's Native Comp Methods call:\n",nc.classname->text);fflush(stdout);
1488   utf_display(nc.classname); fflush(stdout);
1489
1490   for (i=0; i<nc.methCnt; i++) {
1491     printf("\tMethod=%s %s\n",nc.methods[i].methodname->text,nc.methods[i].descriptor->text);fflush(stdout);
1492     utf_display(nc.methods[i].methodname); fflush(stdout);
1493     utf_display(nc.methods[i].descriptor);fflush(stdout);
1494     printf("\n");fflush(stdout);
1495
1496     for (j=0; j<nc.callCnt[i]; j++) {
1497       printf("\t\t<%i,%i>bCalled = ",i,j);fflush(stdout);
1498         utf_display(nc.methods[i].methodCalls[j].classname);fflush(stdout);
1499         utf_display(nc.methods[i].methodCalls[j].methodname); fflush(stdout);
1500         utf_display(nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1501         printf("\n");fflush(stdout);
1502       }
1503     }
1504 printf("---------------------\n");fflush(stdout);
1505 }
1506
1507
1508 /*--------------------------------------------------------*/
1509 classMeth findNativeMethodCalls(utf *c, utf *m, utf *d )
1510 {
1511     int i = 0;
1512     int j = 0;
1513     int cnt = 0;
1514     classMeth mc;
1515     mc.i_class = i;
1516     mc.j_method = j;
1517     mc.methCnt = cnt;
1518
1519     return mc;
1520 }
1521
1522 /*--------------------------------------------------------*/
1523 nativeCall* findNativeClassCalls(char *aclassname ) {
1524 int i;
1525
1526 for (i=0;i<NATIVECALLSSIZE; i++) {
1527    /* convert table to utf later to speed up search */
1528    if (strcmp(nativeCalls[i].classname, aclassname) == 0)
1529         return &nativeCalls[i];
1530    }
1531
1532 return NULL;
1533 }
1534 /*--------------------------------------------------------*/
1535 /*--------------------------------------------------------*/
1536 void utfNativeCall(nativeCall nc, nativeCompCall *ncc) {
1537   int i,j;
1538
1539
1540   ncc->classname = utf_new_char(nc.classname);
1541   ncc->methCnt = nc.methCnt;
1542
1543   for (i=0; i<nc.methCnt; i++) {
1544     ncc->methods[i].methodname = utf_new_char(nc.methods[i].methodname);
1545     ncc->methods[i].descriptor = utf_new_char(nc.methods[i].descriptor);
1546     ncc->callCnt[i] = nc.callCnt[i];
1547
1548     for (j=0; j<nc.callCnt[i]; j++) {
1549
1550         ncc->methods[i].methodCalls[j].classname  = utf_new_char(nc.methods[i].methodCalls[j].classname);
1551
1552         if (strcmp("", nc.methods[i].methodCalls[j].methodname) != 0) {
1553           ncc->methods[i].methodCalls[j].methodname = utf_new_char(nc.methods[i].methodCalls[j].methodname);
1554           ncc->methods[i].methodCalls[j].descriptor = utf_new_char(nc.methods[i].methodCalls[j].descriptor);
1555           }
1556         else {
1557           ncc->methods[i].methodCalls[j].methodname = NULL;
1558           ncc->methods[i].methodCalls[j].descriptor = NULL;
1559           }
1560       }
1561     }
1562 }
1563
1564
1565
1566 /*--------------------------------------------------------*/
1567
1568 bool natcall2utf(bool natcallcompdone) {
1569 int i;
1570
1571 if (natcallcompdone)
1572         return true;
1573
1574 for (i=0;i<NATIVECALLSSIZE; i++) {
1575    utfNativeCall  (nativeCalls[i], &nativeCompCalls[i]);
1576    }
1577
1578 return true;
1579 }
1580
1581 /*--------------------------------------------------------*/
1582
1583
1584 java_objectarray *builtin_asm_createclasscontextarray(classinfo **end,classinfo **start) {
1585 #warning platform dependend
1586         java_objectarray *tmpArray;
1587         int i;
1588         classinfo **current;
1589         classinfo *c;
1590         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1591         printf("end %p, start %p, size %ld\n",end,start,size);
1592         if (!class_java_lang_Class)
1593                 class_java_lang_Class = class_new(utf_new_char ("java/lang/Class"));
1594         if (!class_java_lang_SecurityManager)
1595                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1596         if (size>0) {
1597                 if (start==class_java_lang_SecurityManager) {
1598                         size--;
1599                         start--;
1600                 }
1601         }
1602         tmpArray=builtin_newarray(size, class_array_of(class_java_lang_Class)->vftbl);
1603
1604         for(i=0,current=start;i<size;i++,current--) {
1605                 c=*current;
1606                 printf("%d\n",i);
1607                 utf_display(c->name);
1608                 use_class_as_object(c);
1609                 tmpArray->data[i]=c;
1610         }
1611         return tmpArray;
1612
1613 }
1614
1615 java_lang_ClassLoader *builtin_asm_getclassloader(classinfo **end,classinfo **start) {
1616 #warning platform dependend
1617         int i;
1618         classinfo **current;
1619         classinfo *c;
1620         classinfo *privilegedAction;
1621         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1622         log_text("builtin_asm_getclassloader");
1623         printf("end %p, start %p, size %ld\n",end,start,size);
1624
1625         if (!class_java_lang_SecurityManager)
1626                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1627         if (size>0) {
1628                 if (start==class_java_lang_SecurityManager) {
1629                         size--;
1630                         start--;
1631                 }
1632         }
1633
1634         privilegedAction=class_new(utf_new_char("java/security/PrivilegedAction"));
1635
1636         for(i=0,current=start;i<size;i++,current--) {
1637                 c=*current;
1638                 if (c==privilegedAction) return NULL;
1639                 if (c->classloader) return c->classloader;
1640         }
1641         return NULL;
1642
1643
1644
1645
1646 /*
1647         log_text("Java_java_lang_VMSecurityManager_currentClassLoader");
1648         init_systemclassloader();
1649
1650         return SystemClassLoader;*/
1651 }
1652
1653 /*
1654  * These are local overrides for various environment variables in Emacs.
1655  * Please do not remove this and leave it at the end of the file, where
1656  * Emacs will automagically detect them.
1657  * ---------------------------------------------------------------------
1658  * Local variables:
1659  * mode: c
1660  * indent-tabs-mode: t
1661  * c-basic-offset: 4
1662  * tab-width: 4
1663  * End:
1664  */