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 1082 2004-05-26 15:04:54Z 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 "main.h"
  51 #include "jni.h"
  52 #include "native.h"
  53 #include "nativetypes.hh"
  54 #include "builtin.h"
  55 #include "asmpart.h"
  56 #include "tables.h"
  57 #include "loader.h"
  58 #include "jni.h"
  59 #include "toolbox/logging.h"
  60 #include "toolbox/memory.h"
  61 #include "threads/thread.h"
  62 #include "threads/threadio.h"
  63 #include "threads/locks.h"
  64 #include "nat/java_lang_VMClass.h"
  65 #include "nat/java_lang_Throwable.h"
  66
  67 /* Include files for IO functions */
  68
  69 #include <fcntl.h>
  70 #include <dirent.h>
  71 #include <sys/types.h>
  72 #ifdef _OSF_SOURCE
  73 #include <sys/mode.h>
  74 #endif
  75 #include <sys/stat.h>
  76
  77 #include "threads/threadio.h"
  78
  79 /* searchpath for classfiles */
  80 char *classpath;
  81
  82 /* for java-string to char conversion */
  83 #define MAXSTRINGSIZE 1000
  84
  85 /******************** systemclasses required for native methods ***************/
  86
  87 classinfo *class_java_lang_Class;
  88 classinfo *class_java_lang_VMClass;
  89 classinfo *class_java_lang_System;
  90 classinfo *class_java_lang_ClassLoader;
  91 classinfo *class_gnu_java_lang_SystemClassLoader;
  92 classinfo *class_java_lang_SecurityManager;
  93 classinfo *class_java_lang_Double;
  94 classinfo *class_java_lang_Float;
  95 classinfo *class_java_lang_Long;
  96 classinfo *class_java_lang_Byte;
  97 classinfo *class_java_lang_Short;
  98 classinfo *class_java_lang_Boolean;
  99 classinfo *class_java_lang_Void;
 100 classinfo *class_java_lang_Character;
 101 classinfo *class_java_lang_Integer;
 102
 103 methodinfo *method_vmclass_init;
 104
 105
 106 /* specify some exception strings for code generation */
 107
 108 char *string_java_lang_ArithmeticException =
 109     "java/lang/ArithmeticException";
 110
 111 char *string_java_lang_ArithmeticException_message =
 112     "/ by zero";
 113
 114 char *string_java_lang_ArrayIndexOutOfBoundsException =
 115     "java/lang/ArrayIndexOutOfBoundsException";
 116
 117 char *string_java_lang_ArrayStoreException =
 118     "java/lang/ArrayStoreException";
 119
 120 char *string_java_lang_ClassCastException =
 121     "java/lang/ClassCastException";
 122
 123 char *string_java_lang_ClassNotFoundException =
 124         "java/lang/ClassNotFoundException";
 125
 126 char *string_java_lang_CloneNotSupportedException =
 127     "java/lang/CloneNotSupportedException";
 128
 129 char *string_java_lang_IllegalArgumentException =
 130     "java/lang/IllegalArgumentException";
 131
 132 char *string_java_lang_IllegalMonitorStateException =
 133     "java/lang/IllegalMonitorStateException";
 134
 135 char *string_java_lang_NegativeArraySizeException =
 136     "java/lang/NegativeArraySizeException";
 137
 138 char *string_java_lang_NoSuchFieldException =
 139         "java/lang/NoSuchFieldException";
 140
 141 char *string_java_lang_NoSuchMethodException =
 142         "java/lang/NoSuchMethodException";
 143
 144 char *string_java_lang_NullPointerException =
 145     "java/lang/NullPointerException";
 146
 147
 148 /* specify some error strings for code generation */
 149
 150 char *string_java_lang_ClassCircularityError =
 151     "java/lang/ClassCircularityError";
 152
 153 char *string_java_lang_ClassFormatError =
 154     "java/lang/ClassFormatError";
 155
 156 char *string_java_lang_LinkageError =
 157     "java/lang/LinkageError";
 158
 159 char *string_java_lang_NoClassDefFoundError =
 160     "java/lang/NoClassDefFoundError";
 161
 162 char *string_java_lang_NoSuchFieldError =
 163         "java/lang/NoSuchFieldError";
 164
 165 char *string_java_lang_NoSuchMethodError =
 166         "java/lang/NoSuchMethodError";
 167
 168 char *string_java_lang_OutOfMemoryError =
 169     "java/lang/OutOfMemoryError";
 170
 171
 172 /* the system classloader object */
 173 struct java_lang_ClassLoader *SystemClassLoader = NULL;
 174
 175 /* for raising exceptions from native methods */
 176 #if !defined(USE_THREADS) || !defined(NATIVE_THREADS)
 177 java_objectheader* _exceptionptr = NULL;
 178 #endif
 179
 180 /************* use classinfo structure as java.lang.Class object **************/
 181
 182 void use_class_as_object(classinfo *c)
 183 {
 184 /*      vftbl *vt; */
 185 /*      vftbl *newtbl; */
 186         java_objectheader *vmo;
 187
 188 /*      vt = class_java_lang_Class->vftbl; */
 189
 190         if (!c->classvftbl) {
 191                 c->classvftbl = true;
 192
 193                 /*                copy_vftbl(&newtbl, vt);
 194                                                   newtbl->class = c->header.vftbl->class;
 195                                                   newtbl->baseval = c->header.vftbl->baseval;
 196                                                   newtbl->diffval = c->header.vftbl->diffval;
 197                                                   c->header.vftbl = newtbl;*/
 198
 199                 c->header.vftbl = class_java_lang_Class->vftbl;
 200
 201                 method_vmclass_init =
 202                         class_findmethod(class_java_lang_VMClass,
 203                                                          utf_new_char("<init>"),
 204                                                          utf_new_char("(Lgnu/classpath/RawData;)V"));
 205
 206                 if (method_vmclass_init == 0) {
 207                         class_showmethods(class_java_lang_VMClass);
 208                         panic("Needed class initializer for VMClass could not be found");
 209                 }
 210
 211                 vmo = builtin_new(class_java_lang_VMClass);
 212
 213                 if (!vmo)
 214                         panic("Error while creating instance of java/lang/VMClass");
 215
 216                 asm_calljavafunction(method_vmclass_init, vmo, c, NULL, NULL);
 217
 218                 c->vmClass = (java_lang_VMClass *) vmo;
 219 #if 0
 220                 setfield_critical(class_java_lang_Class,vmo,"vmClass",          "Ljava/lang/VMClass;",  jobject, (jobject) class_java_lang_Class /*this*/);
 221 #endif
 222
 223         }
 224
 225 }
 226
 227
 228 /*************************** include native methods ***************************/
 229
 230 #ifdef USE_GTK
 231 #include "nat/GdkGraphics.c"
 232 #include "nat/GtkComponentPeer.c"
 233 #include "nat/GdkPixbufDecoder.c"
 234 #include "nat/GtkScrollPanePeer.c"
 235 #include "nat/GtkFileDialogPeer.c"
 236 #include "nat/GtkLabelPeer.c"
 237 #endif
 238
 239
 240 /************************** tables for methods ********************************/
 241
 242 #undef JOWENN_DEBUG
 243 #undef JOWENN_DEBUG1
 244
 245 /* table for locating native methods */
 246 static struct nativeref {
 247         char *classname;
 248         char *methodname;
 249         char *descriptor;
 250         bool isstatic;
 251         functionptr func;
 252 } nativetable [] = {
 253
 254 #include "nativetable.hh"
 255
 256 };
 257
 258
 259 #define NATIVETABLESIZE  (sizeof(nativetable)/sizeof(struct nativeref))
 260
 261 /* table for fast string comparison */
 262 static struct nativecompref {
 263         utf *classname;
 264         utf *methodname;
 265         utf *descriptor;
 266         bool isstatic;
 267         functionptr func;
 268 } nativecomptable [NATIVETABLESIZE];
 269
 270 /* string comparsion table initialized */
 271 static bool nativecompdone = false;
 272
 273
 274 /******************************************************************************/
 275 /******************************************************************************/
 276 #include "natcalls.h"
 277
 278 /* string call comparison table initialized */
 279
 280 /******************************************************************************/
 281 /******************************************************************************/
 282
 283 /*--------------- native method calls & classes used -------------------------*/
 284
 285 void throw_exception_exit()
 286 {
 287         java_objectheader *xptr;
 288         classinfo *c;
 289         methodinfo *pss;
 290
 291         if (*exceptionptr) {
 292                 xptr = *exceptionptr;
 293
 294                 /* clear exception, because we are calling jit code again */
 295                 *exceptionptr = NULL;
 296
 297                 printf("Exception in thread \"main\" ");
 298                 fflush(stdout);
 299
 300                 c = xptr->vftbl->class;
 301
 302 /*              ts = class_resolveclassmethod(c, */
 303 /*                                                                        utf_new_char("toString"), */
 304 /*                                                                        utf_new_char("()Ljava/lang/String;"), */
 305 /*                                                                        class_java_lang_Object, */
 306 /*                                                                        false); */
 307
 308 /*              if (!ts) { */
 309 /*                      panic("internal error"); */
 310 /*              } */
 311
 312 /*              tostring = asm_calljavafunction(ts, xptr, NULL, NULL, NULL); */
 313
 314 /*              utf_display(javastring_toutf(tostring, false)); */
 315
 316                 pss = class_resolveclassmethod(c,
 317                                                                            utf_new_char("printStackTrace"),
 318                                                                            utf_new_char("()V"),
 319                                                                            class_java_lang_Object,
 320                                                                            false);
 321
 322                 /* print the stacktrace */
 323                 if (pss) {
 324                         asm_calljavafunction(pss, xptr, NULL, NULL, NULL);
 325
 326                 } else {
 327                         panic("printStackTrace not found!");
 328                 }
 329
 330                 fflush(stdout);
 331
 332                 /* good bye! */
 333                 exit(1);
 334         }
 335 }
 336
 337
 338 java_objectheader *new_exception(char *classname)
 339 {
 340         classinfo *c = class_new(utf_new_char(classname));
 341
 342         return native_new_and_init(c);
 343 }
 344
 345 java_objectheader *new_exception_message(char *classname, char *message)
 346 {
 347         classinfo *c = class_new(utf_new_char(classname));
 348
 349         return native_new_and_init_string(c, javastring_new_char(message));
 350 }
 351
 352
 353 java_objectheader *new_exception_throwable(char *classname, java_lang_Throwable *throwable)
 354 {
 355         classinfo *c = class_new(utf_new_char(classname));
 356
 357         return native_new_and_init_throwable(c, throwable);
 358 }
 359
 360
 361 java_objectheader *new_exception_utfmessage(char *classname, utf *message)
 362 {
 363         classinfo *c = class_new(utf_new_char(classname));
 364
 365         return native_new_and_init_string(c, javastring_new(message));
 366 }
 367
 368
 369 java_objectheader *new_exception_javastring(char *classname, java_lang_String *message)
 370 {
 371         classinfo *c = class_new(utf_new_char(classname));
 372
 373         return native_new_and_init_string(c, message);
 374 }
 375
 376
 377 java_objectheader *new_exception_int(char *classname, s4 i)
 378 {
 379         classinfo *c = class_new(utf_new_char(classname));
 380
 381         return native_new_and_init_int(c, i);
 382 }
 383
 384
 385 /*********************** function: native_loadclasses **************************
 386
 387         load classes required for native methods
 388
 389 *******************************************************************************/
 390
 391 void native_loadclasses()
 392 {
 393         static int classesLoaded = 0; /*temporary hack JoWenn*/
 394
 395         if (classesLoaded)
 396                 return;
 397
 398         classesLoaded = 1;
 399
 400         class_java_lang_Cloneable =
 401                 class_new(utf_new_char("java/lang/Cloneable"));
 402         class_load(class_java_lang_Cloneable);
 403         class_link(class_java_lang_Cloneable);
 404
 405         class_java_lang_Class =
 406                 class_new(utf_new_char("java/lang/Class"));
 407         class_load(class_java_lang_Class);
 408         class_link(class_java_lang_Class);
 409
 410         class_java_lang_VMClass =
 411                 class_new(utf_new_char("java/lang/VMClass"));
 412         class_load(class_java_lang_VMClass);
 413         class_link(class_java_lang_VMClass);
 414
 415         class_java_lang_ClassLoader =
 416                 class_new(utf_new_char("java/lang/ClassLoader"));
 417         class_load(class_java_lang_ClassLoader);
 418         class_link(class_java_lang_ClassLoader);
 419
 420         /* load classes for wrapping primitive types */
 421         class_java_lang_Double = class_new(utf_new_char("java/lang/Double"));
 422         class_load(class_java_lang_Double);
 423         class_link(class_java_lang_Double);
 424
 425         class_java_lang_Float = class_new(utf_new_char("java/lang/Float"));
 426         class_load(class_java_lang_Float);
 427         class_link(class_java_lang_Float);
 428
 429         class_java_lang_Character =     class_new(utf_new_char("java/lang/Character"));
 430         class_load(class_java_lang_Character);
 431         class_link(class_java_lang_Character);
 432
 433         class_java_lang_Integer = class_new(utf_new_char("java/lang/Integer"));
 434         class_load(class_java_lang_Integer);
 435         class_link(class_java_lang_Integer);
 436
 437         class_java_lang_Long = class_new(utf_new_char("java/lang/Long"));
 438         class_load(class_java_lang_Long);
 439         class_link(class_java_lang_Long);
 440
 441         class_java_lang_Byte = class_new(utf_new_char("java/lang/Byte"));
 442         class_load(class_java_lang_Byte);
 443         class_link(class_java_lang_Byte);
 444
 445         class_java_lang_Short = class_new(utf_new_char("java/lang/Short"));
 446         class_load(class_java_lang_Short);
 447         class_link(class_java_lang_Short);
 448
 449         class_java_lang_Boolean = class_new(utf_new_char("java/lang/Boolean"));
 450         class_load(class_java_lang_Boolean);
 451         class_link(class_java_lang_Boolean);
 452
 453         class_java_lang_Void = class_new(utf_new_char("java/lang/Void"));
 454         class_load(class_java_lang_Void);
 455         class_link(class_java_lang_Void);
 456 }
 457
 458
 459 /*****************************************************************************
 460
 461         create systemclassloader object and initialize instance fields
 462
 463 ******************************************************************************/
 464
 465 void init_systemclassloader()
 466 {
 467         log_text("init_systemclassloader");
 468         if (!SystemClassLoader) {
 469                 native_loadclasses();
 470                 log_text("Initializing new system class loader");
 471                 /* create object and call initializer */
 472                 SystemClassLoader = (java_lang_ClassLoader *) native_new_and_init(class_new(utf_new_char("gnu/java/lang/SystemClassLoader")));
 473
 474                 /* systemclassloader has no parent */
 475                 SystemClassLoader->parent      = NULL;
 476                 SystemClassLoader->initialized = true;
 477         }
 478         log_text("leaving system class loader");
 479 }
 480
 481
 482 /********************* function: native_setclasspath **************************/
 483
 484 void native_setclasspath(char *path)
 485 {
 486         /* set searchpath for classfiles */
 487         classpath = path;
 488 }
 489
 490
 491 /*********************** Function: native_findfunction *************************
 492
 493         Looks up a method (must have the same class name, method name, descriptor
 494         and 'static'ness) and returns a function pointer to it.
 495         Returns: function pointer or NULL (if there is no such method)
 496
 497         Remark: For faster operation, the names/descriptors are converted from C
 498                 strings to Unicode the first time this function is called.
 499
 500 *******************************************************************************/
 501
 502 functionptr native_findfunction(utf *cname, utf *mname,
 503                                                                 utf *desc, bool isstatic)
 504 {
 505         int i;
 506         /* entry of table for fast string comparison */
 507         struct nativecompref *n;
 508         /* for warning message if no function is found */
 509         char *buffer;
 510         int buffer_len;
 511
 512         isstatic = isstatic ? true : false;
 513
 514         if (!nativecompdone) {
 515                 for (i = 0; i < NATIVETABLESIZE; i++) {
 516                         nativecomptable[i].classname  =
 517                                 utf_new_char(nativetable[i].classname);
 518                         nativecomptable[i].methodname =
 519                                 utf_new_char(nativetable[i].methodname);
 520                         nativecomptable[i].descriptor =
 521                                 utf_new_char(nativetable[i].descriptor);
 522                         nativecomptable[i].isstatic   =
 523                                 nativetable[i].isstatic;
 524                         nativecomptable[i].func       =
 525                                 nativetable[i].func;
 526                 }
 527                 nativecompdone = true;
 528         }
 529
 530 #ifdef JOWENN_DEBUG
 531         buffer_len =
 532                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 533
 534         buffer = MNEW(char, buffer_len);
 535
 536         strcpy(buffer, "searching matching function in native table:");
 537         utf_sprint(buffer+strlen(buffer), mname);
 538         strcpy(buffer+strlen(buffer), ": ");
 539         utf_sprint(buffer+strlen(buffer), desc);
 540         strcpy(buffer+strlen(buffer), " for class ");
 541         utf_sprint(buffer+strlen(buffer), cname);
 542
 543         log_text(buffer);
 544
 545         MFREE(buffer, char, buffer_len);
 546 #endif
 547
 548         for (i = 0; i < NATIVETABLESIZE; i++) {
 549                 n = &(nativecomptable[i]);
 550
 551                 if (cname == n->classname && mname == n->methodname &&
 552                     desc == n->descriptor && isstatic == n->isstatic)
 553                         return n->func;
 554 #ifdef JOWENN_DEBUG
 555                         else {
 556                                 if (cname == n->classname && mname == n->methodname )  log_text("static and descriptor mismatch");
 557
 558                                 else {
 559                                         buffer_len =
 560                                           utf_strlen(n->classname) + utf_strlen(n->methodname) + utf_strlen(n->descriptor) + 64;
 561
 562                                         buffer = MNEW(char, buffer_len);
 563
 564                                         strcpy(buffer, "comparing with:");
 565                                         utf_sprint(buffer+strlen(buffer), n->methodname);
 566                                         strcpy (buffer+strlen(buffer), ": ");
 567                                         utf_sprint(buffer+strlen(buffer), n->descriptor);
 568                                         strcpy(buffer+strlen(buffer), " for class ");
 569                                         utf_sprint(buffer+strlen(buffer), n->classname);
 570
 571                                         log_text(buffer);
 572
 573                                         MFREE(buffer, char, buffer_len);
 574                                 }
 575                         }
 576 #endif
 577         }
 578
 579
 580         /* no function was found, display warning */
 581
 582         buffer_len =
 583                 utf_strlen(cname) + utf_strlen(mname) + utf_strlen(desc) + 64;
 584
 585         buffer = MNEW(char, buffer_len);
 586
 587         strcpy(buffer, "warning: native function ");
 588         utf_sprint(buffer + strlen(buffer), mname);
 589         strcpy(buffer + strlen(buffer), ": ");
 590         utf_sprint(buffer + strlen(buffer), desc);
 591         strcpy(buffer + strlen(buffer), " not found in class ");
 592         utf_sprint(buffer + strlen(buffer), cname);
 593
 594         log_text(buffer);
 595
 596         MFREE(buffer, char, buffer_len);
 597
 598 /*      exit(1); */
 599
 600         /* keep compiler happy */
 601         return NULL;
 602 }
 603
 604
 605 /********************** function: javastring_new *******************************
 606
 607         creates a new object of type java/lang/String with the text of
 608         the specified utf8-string
 609
 610         return: pointer to the string or NULL if memory is exhausted.
 611
 612 *******************************************************************************/
 613
 614 java_lang_String *javastring_new(utf *u)
 615 {
 616         char *utf_ptr = u->text;        /* current utf character in utf string    */
 617         int utflength = utf_strlen(u);  /* length of utf-string if uncompressed   */
 618         java_lang_String *s;                /* result-string                          */
 619         java_chararray *a;
 620         s4 i;
 621
 622         s = (java_lang_String *) builtin_new(class_java_lang_String);
 623         a = builtin_newarray_char(utflength);
 624
 625         /* javastring or character-array could not be created */
 626         if (!a || !s)
 627                 return NULL;
 628
 629         /* decompress utf-string */
 630         for (i = 0; i < utflength; i++)
 631                 a->data[i] = utf_nextu2(&utf_ptr);
 632
 633         /* set fields of the javastring-object */
 634         s->value  = a;
 635         s->offset = 0;
 636         s->count  = utflength;
 637
 638         return s;
 639 }
 640
 641
 642 /********************** function: javastring_new_char **************************
 643
 644         creates a new java/lang/String object which contains the convertet
 645         C-string passed via text.
 646
 647         return: the object pointer or NULL if memory is exhausted.
 648
 649 *******************************************************************************/
 650
 651 java_lang_String *javastring_new_char(char *text)
 652 {
 653         s4 i;
 654         s4 len = strlen(text); /* length of the string */
 655         java_lang_String *s;   /* result-string */
 656         java_chararray *a;
 657
 658         s = (java_lang_String *) builtin_new(class_java_lang_String);
 659         a = builtin_newarray_char(len);
 660
 661         /* javastring or character-array could not be created */
 662         if (!a || !s)
 663                 return NULL;
 664
 665         /* copy text */
 666         for (i = 0; i < len; i++)
 667                 a->data[i] = text[i];
 668
 669         /* set fields of the javastring-object */
 670         s->value  = a;
 671         s->offset = 0;
 672         s->count  = len;
 673
 674         return s;
 675 }
 676
 677
 678 /************************* function javastring_tochar **************************
 679
 680         converts a Java string into a C string.
 681
 682         return: pointer to C string
 683
 684         Caution: every call of this function overwrites the previous string !!!
 685
 686 *******************************************************************************/
 687
 688 static char stringbuffer[MAXSTRINGSIZE];
 689
 690 char *javastring_tochar(java_objectheader *so)
 691 {
 692         java_lang_String *s = (java_lang_String *) so;
 693         java_chararray *a;
 694         s4 i;
 695
 696         if (!s)
 697                 return "";
 698
 699         a = s->value;
 700
 701         if (!a)
 702                 return "";
 703
 704         if (s->count > MAXSTRINGSIZE)
 705                 return "";
 706
 707         for (i = 0; i < s->count; i++)
 708                 stringbuffer[i] = a->data[s->offset + i];
 709
 710         stringbuffer[i] = '\0';
 711
 712         return stringbuffer;
 713 }
 714
 715
 716 /****************** function class_findfield_approx ****************************
 717
 718         searches in 'classinfo'-structure for a field with the
 719         specified name
 720
 721 *******************************************************************************/
 722
 723 fieldinfo *class_findfield_approx(classinfo *c, utf *name)
 724 {
 725         s4 i;
 726
 727         for (i = 0; i < c->fieldscount; i++) {
 728                 /* compare field names */
 729                 if ((c->fields[i].name == name))
 730                         return &(c->fields[i]);
 731         }
 732
 733         /* field was not found, raise exception */
 734         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 735
 736         return NULL;
 737 }
 738
 739
 740 s4 class_findfield_index_approx(classinfo *c, utf *name)
 741 {
 742         s4 i;
 743
 744         for (i = 0; i < c->fieldscount; i++) {
 745                 /* compare field names */
 746                 if ((c->fields[i].name == name))
 747                         return i;
 748         }
 749
 750         /* field was not found, raise exception */
 751         *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
 752
 753         return -1;
 754 }
 755
 756
 757 /********************** function: native_new_and_init *************************
 758
 759         Creates a new object on the heap and calls the initializer.
 760         Returns the object pointer or NULL if memory is exhausted.
 761
 762 *******************************************************************************/
 763
 764 java_objectheader *native_new_and_init(classinfo *c)
 765 {
 766         methodinfo *m;
 767         java_objectheader *o;
 768
 769         if (!c)
 770                 return *exceptionptr;
 771
 772         o = builtin_new(c);                 /* create object                      */
 773
 774         if (!o)
 775                 return NULL;
 776
 777         /* find initializer */
 778
 779         m = class_findmethod(c,
 780                                                  utf_new_char("<init>"),
 781                                                  utf_new_char("()V"));
 782
 783         if (!m) {                           /* initializer not found              */
 784                 if (verbose) {
 785                         char logtext[MAXLOGTEXT];
 786                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 787                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 788                         log_text(logtext);
 789                 }
 790                 return o;
 791         }
 792
 793         /* call initializer */
 794
 795         asm_calljavafunction(m, o, NULL, NULL, NULL);
 796
 797         return o;
 798 }
 799
 800
 801 java_objectheader *native_new_and_init_string(classinfo *c, java_lang_String *s)
 802 {
 803         methodinfo *m;
 804         java_objectheader *o;
 805
 806         if (!c)
 807                 return *exceptionptr;
 808
 809         o = builtin_new(c);          /* create object          */
 810
 811         if (!o)
 812                 return NULL;
 813
 814         /* find initializer */
 815
 816         m = class_findmethod(c,
 817                                                  utf_new_char("<init>"),
 818                                                  utf_new_char("(Ljava/lang/String;)V"));
 819
 820         if (!m) {                                       /* initializer not found  */
 821                 if (verbose) {
 822                         char logtext[MAXLOGTEXT];
 823                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 824                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 825                         log_text(logtext);
 826                 }
 827                 return o;
 828         }
 829
 830         /* call initializer */
 831
 832         asm_calljavafunction(m, o, s, NULL, NULL);
 833
 834         return o;
 835 }
 836
 837
 838 java_objectheader *native_new_and_init_int(classinfo *c, s4 i)
 839 {
 840         methodinfo *m;
 841         java_objectheader *o;
 842
 843         if (!c)
 844                 return *exceptionptr;
 845
 846         o = builtin_new(c);          /* create object          */
 847
 848         if (!o) return NULL;
 849
 850         /* find initializer */
 851
 852         m = class_findmethod(c,
 853                                                  utf_new_char("<init>"),
 854                                                  utf_new_char("(I)V"));
 855
 856         if (!m) {                                       /* initializer not found  */
 857                 if (verbose) {
 858                         char logtext[MAXLOGTEXT];
 859                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 860                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 861                         log_text(logtext);
 862                 }
 863                 return o;
 864         }
 865
 866         /* call initializer */
 867
 868         asm_calljavafunction(m, o, (void *) i, NULL, NULL);
 869
 870         return o;
 871 }
 872
 873
 874 java_objectheader *native_new_and_init_throwable(classinfo *c, java_lang_Throwable *t)
 875 {
 876         methodinfo *m;
 877         java_objectheader *o;
 878
 879         if (!c)
 880                 return *exceptionptr;
 881
 882         o = builtin_new(c);          /* create object          */
 883
 884         if (!o) return NULL;
 885
 886         /* find initializer */
 887
 888         m = class_findmethod(c,
 889                                                  utf_new_char("<init>"),
 890                                                  utf_new_char("(Ljava/lang/Throwable;)V"));
 891
 892         if (!m) {                                       /* initializer not found  */
 893                 if (verbose) {
 894                         char logtext[MAXLOGTEXT];
 895                         sprintf(logtext, "Warning: class has no instance-initializer: ");
 896                         utf_sprint_classname(logtext + strlen(logtext), c->name);
 897                         log_text(logtext);
 898                 }
 899                 return o;
 900         }
 901
 902         /* call initializer */
 903
 904         asm_calljavafunction(m, o, t, NULL, NULL);
 905
 906         return o;
 907 }
 908
 909
 910 /******************** function: stringtable_update ****************************
 911
 912         traverses the javastring hashtable and sets the vftbl-entries of
 913         javastrings which were temporarily set to NULL, because
 914         java.lang.Object was not yet loaded
 915
 916 *******************************************************************************/
 917
 918 void stringtable_update ()
 919 {
 920         java_lang_String *js;
 921         java_chararray *a;
 922         literalstring *s;       /* hashtable entry */
 923         int i;
 924
 925         for (i = 0; i < string_hash.size; i++) {
 926                 s = string_hash.ptr[i];
 927                 if (s) {
 928                         while (s) {
 929
 930                                 js = (java_lang_String *) s->string;
 931
 932                                 if (!js || !js->value)
 933                                         /* error in hashtable found */
 934                                         panic("invalid literalstring in hashtable");
 935
 936                                 a = js->value;
 937
 938                                 if (!js->header.vftbl)
 939                                         /* vftbl of javastring is NULL */
 940                                         js->header.vftbl = class_java_lang_String->vftbl;
 941
 942                                 if (!a->header.objheader.vftbl)
 943                                         /* vftbl of character-array is NULL */
 944                                         a->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
 945
 946                                 /* follow link in external hash chain */
 947                                 s = s->hashlink;
 948                         }
 949                 }
 950         }
 951 }
 952
 953
 954 /************************* function: u2_utflength ***************************
 955
 956         returns the utf length in bytes of a u2 array
 957
 958 *****************************************************************************/
 959
 960 u4 u2_utflength(u2 *text, u4 u2_length)
 961 {
 962         u4 result_len =  0;  /* utf length in bytes  */
 963         u2 ch;               /* current unicode character */
 964         u4 len;
 965
 966         for (len = 0; len < u2_length; len++) {
 967                 /* next unicode character */
 968                 ch = *text++;
 969
 970                 /* determine bytes required to store unicode character as utf */
 971                 if (ch && (ch < 0x80))
 972                         result_len++;
 973                 else if (ch < 0x800)
 974                         result_len += 2;
 975                 else
 976                         result_len += 3;
 977         }
 978
 979     return result_len;
 980 }
 981
 982
 983 /********************* function: utf_new_u2 ***********************************
 984
 985         make utf symbol from u2 array,
 986         if isclassname is true '.' is replaced by '/'
 987
 988 *******************************************************************************/
 989
 990 utf *utf_new_u2(u2 *unicode_pos, u4 unicode_length, bool isclassname)
 991 {
 992         char *buffer; /* memory buffer for  unicode characters */
 993         char *pos;    /* pointer to current position in buffer */
 994         u4 left;      /* unicode characters left */
 995         u4 buflength; /* utf length in bytes of the u2 array  */
 996         utf *result;  /* resulting utf-string */
 997         int i;
 998
 999         /* determine utf length in bytes and allocate memory */
1000         /* printf("utf_new_u2: unicode_length=%d\n",unicode_length);            */
1001         buflength = u2_utflength(unicode_pos, unicode_length);
1002         buffer    = MNEW(char, buflength);
1003
1004         /* memory allocation failed */
1005         if (!buffer) {
1006                 printf("length: %d\n",buflength);
1007                 log_text("utf_new_u2:buffer==NULL");
1008         }
1009
1010         left = buflength;
1011         pos  = buffer;
1012
1013         for (i = 0; i++ < unicode_length; unicode_pos++) {
1014                 /* next unicode character */
1015                 u2 c = *unicode_pos;
1016
1017                 if ((c != 0) && (c < 0x80)) {
1018                         /* 1 character */
1019                         left--;
1020                 if ((int) left < 0) break;
1021                         /* convert classname */
1022                         if (isclassname && c == '.')
1023                                 *pos++ = '/';
1024                         else
1025                                 *pos++ = (char) c;
1026
1027                 } else if (c < 0x800) {
1028                         /* 2 characters */
1029                 unsigned char high = c >> 6;
1030                 unsigned char low  = c & 0x3F;
1031                         left = left - 2;
1032                 if ((int) left < 0) break;
1033                 *pos++ = high | 0xC0;
1034                 *pos++ = low  | 0x80;
1035
1036                 } else {
1037                 /* 3 characters */
1038                 char low  = c & 0x3f;
1039                 char mid  = (c >> 6) & 0x3F;
1040                 char high = c >> 12;
1041                         left = left - 3;
1042                 if ((int) left < 0) break;
1043                 *pos++ = high | 0xE0;
1044                 *pos++ = mid  | 0x80;
1045                 *pos++ = low  | 0x80;
1046                 }
1047         }
1048
1049         /* insert utf-string into symbol-table */
1050         result = utf_new(buffer,buflength);
1051
1052         MFREE(buffer, char, buflength);
1053
1054         return result;
1055 }
1056
1057
1058 /********************* function: javastring_toutf *****************************
1059
1060         make utf symbol from javastring
1061
1062 *******************************************************************************/
1063
1064 utf *javastring_toutf(java_lang_String *string, bool isclassname)
1065 {
1066         java_lang_String *str = (java_lang_String *) string;
1067
1068 /*      printf("javastring_toutf offset: %d, len %d\n",str->offset, str->count); */
1069 /*      fflush(stdout); */
1070
1071         return utf_new_u2(str->value->data + str->offset, str->count, isclassname);
1072 }
1073
1074
1075 /********************* function: literalstring_u2 *****************************
1076
1077     searches for the javastring with the specified u2-array in
1078     the string hashtable, if there is no such string a new one is
1079     created
1080
1081     if copymode is true a copy of the u2-array is made
1082
1083 *******************************************************************************/
1084
1085 java_objectheader *literalstring_u2(java_chararray *a, u4 length, u4 offset,
1086                                                                         bool copymode)
1087 {
1088     literalstring *s;                /* hashtable element */
1089     java_lang_String *js;            /* u2-array wrapped in javastring */
1090     java_chararray *stringdata;      /* copy of u2-array */
1091     u4 key;
1092     u4 slot;
1093     u2 i;
1094
1095 //#define DEBUG_LITERALSTRING_U2
1096 #ifdef DEBUG_LITERALSTRING_U2
1097     printf("literalstring_u2: length=%d, offset=%d\n", length, offset);
1098         fflush(stdout);
1099 #endif
1100
1101     /* find location in hashtable */
1102     key  = unicode_hashkey(a->data + offset, length);
1103     slot = key & (string_hash.size - 1);
1104     s    = string_hash.ptr[slot];
1105
1106     while (s) {
1107                 js = (java_lang_String *) s->string;
1108
1109                 if (length == js->count) {
1110                         /* compare text */
1111                         for (i = 0; i < length; i++) {
1112                                 if (a->data[offset + i] != js->value->data[i])
1113                                         goto nomatch;
1114                         }
1115
1116                         /* string already in hashtable, free memory */
1117                         if (!copymode)
1118                                 lit_mem_free(a, sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10);
1119
1120 #ifdef DEBUG_LITERALSTRING_U2
1121                         printf("literalstring_u2: foundentry at %p\n", js);
1122                         utf_display(javastring_toutf(js, 0));
1123                         printf("\n\n");
1124                         fflush(stdout);
1125 #endif
1126                         return (java_objectheader *) js;
1127                 }
1128
1129         nomatch:
1130                 /* follow link in external hash chain */
1131                 s = s->hashlink;
1132     }
1133
1134     if (copymode) {
1135                 /* create copy of u2-array for new javastring */
1136                 u4 arraysize = sizeof(java_chararray) + sizeof(u2) * (length - 1) + 10;
1137                 stringdata = lit_mem_alloc(arraysize);
1138 /*              memcpy(stringdata, a, arraysize); */
1139                 memcpy(&(stringdata->header), &(a->header), sizeof(java_arrayheader));
1140                 memcpy(&(stringdata->data), &(a->data) + offset, sizeof(u2) * (length - 1) + 10);
1141
1142     } else {
1143                 stringdata = a;
1144         }
1145
1146     /* location in hashtable found, complete arrayheader */
1147     stringdata->header.objheader.vftbl = primitivetype_table[ARRAYTYPE_CHAR].arrayvftbl;
1148     stringdata->header.size = length;
1149
1150     /* create new javastring */
1151     js = LNEW(java_lang_String);
1152         /* TWISTI */
1153 /*      js->header.vftbl = class_java_lang_String->vftbl; */
1154     js->header.vftbl = class_load(class_new(utf_new_char("java/lang/String")))->vftbl;
1155     js->value  = stringdata;
1156     js->offset = 0;
1157     js->count  = length;
1158
1159     /* create new literalstring */
1160     s = NEW(literalstring);
1161     s->hashlink = string_hash.ptr[slot];
1162     s->string   = (java_objectheader *) js;
1163     string_hash.ptr[slot] = s;
1164
1165     /* update numbe of hashtable entries */
1166     string_hash.entries++;
1167
1168     /* reorganization of hashtable */
1169     if (string_hash.entries > (string_hash.size * 2)) {
1170                 /* reorganization of hashtable, average length of
1171          the external chains is approx. 2                */
1172
1173                 u4 i;
1174                 literalstring *s;
1175                 hashtable newhash; /* the new hashtable */
1176
1177                 /* create new hashtable, double the size */
1178                 init_hashtable(&newhash, string_hash.size * 2);
1179                 newhash.entries = string_hash.entries;
1180
1181                 /* transfer elements to new hashtable */
1182                 for (i = 0; i < string_hash.size; i++) {
1183                         s = string_hash.ptr[i];
1184                         while (s) {
1185                                 literalstring *nexts = s->hashlink;
1186                                 js   = (java_lang_String *) s->string;
1187                                 slot = unicode_hashkey(js->value->data, js->count) & (newhash.size - 1);
1188
1189                                 s->hashlink = newhash.ptr[slot];
1190                                 newhash.ptr[slot] = s;
1191
1192                                 /* follow link in external hash chain */
1193                                 s = nexts;
1194                         }
1195                 }
1196
1197                 /* dispose old table */
1198                 MFREE(string_hash.ptr, void*, string_hash.size);
1199                 string_hash = newhash;
1200     }
1201
1202 #ifdef DEBUG_LITERALSTRING_U2
1203         printf("literalstring_u2: newly created at %p\n", js);
1204         utf_display(javastring_toutf(js, 0));
1205         printf("\n\n");
1206         fflush(stdout);
1207 #endif
1208
1209     return (java_objectheader *) js;
1210 }
1211
1212
1213 /******************** Function: literalstring_new *****************************
1214
1215     creates a new javastring with the text of the utf-symbol
1216     and inserts it into the string hashtable
1217
1218 *******************************************************************************/
1219
1220 java_objectheader *literalstring_new(utf *u)
1221 {
1222     char *utf_ptr = u->text;         /* pointer to current unicode character in utf string */
1223     u4 utflength  = utf_strlen(u);   /* length of utf-string if uncompressed */
1224     java_chararray *a;               /* u2-array constructed from utf string */
1225     u4 i;
1226
1227     /* allocate memory */
1228     a = lit_mem_alloc(sizeof(java_chararray) + sizeof(u2) * (utflength - 1) + 10);
1229
1230     /* convert utf-string to u2-array */
1231     for (i = 0; i < utflength; i++)
1232                 a->data[i] = utf_nextu2(&utf_ptr);
1233
1234     return literalstring_u2(a, utflength, 0, false);
1235 }
1236
1237
1238 /********************** function: literalstring_free **************************
1239
1240         removes a javastring from memory
1241
1242 ******************************************************************************/
1243
1244 void literalstring_free(java_objectheader* sobj)
1245 {
1246         java_lang_String *s = (java_lang_String *) sobj;
1247         java_chararray *a = s->value;
1248
1249         /* dispose memory of java.lang.String object */
1250         LFREE(s, java_lang_String);
1251
1252         /* dispose memory of java-characterarray */
1253         LFREE(a, sizeof(java_chararray) + sizeof(u2) * (a->header.size - 1)); /* +10 ?? */
1254 }
1255
1256
1257 void copy_vftbl(vftbl **dest, vftbl *src)
1258 {
1259     *dest = src;
1260 #if 0
1261     /* XXX this kind of copying does not work (in the general
1262      * case). The interface tables would have to be copied, too. I
1263      * don't see why we should make a copy anyway. -Edwin
1264      */
1265         *dest = mem_alloc(sizeof(vftbl) + sizeof(methodptr)*(src->vftbllength-1));
1266         memcpy(*dest, src, sizeof(vftbl) - sizeof(methodptr));
1267         memcpy(&(*dest)->table, &src->table, src->vftbllength * sizeof(methodptr));
1268 #endif
1269 }
1270
1271
1272 /******************************************************************************************
1273
1274         creates method signature (excluding return type) from array of
1275         class-objects representing the parameters of the method
1276
1277 *******************************************************************************************/
1278
1279
1280 utf *create_methodsig(java_objectarray* types, char *retType)
1281 {
1282     char *buffer;       /* buffer for building the desciptor */
1283     char *pos;          /* current position in buffer */
1284     utf *result;        /* the method signature */
1285     u4 buffer_size = 3; /* minimal size=3: room for parenthesis and returntype */
1286     u4 i, j;
1287
1288     if (!types) return NULL;
1289
1290     /* determine required buffer-size */
1291     for (i = 0; i < types->header.size; i++) {
1292                 classinfo *c = (classinfo *) types->data[i];
1293                 buffer_size  = buffer_size + c->name->blength + 2;
1294     }
1295
1296     if (retType) buffer_size += strlen(retType);
1297
1298     /* allocate buffer */
1299     buffer = MNEW(u1, buffer_size);
1300     pos    = buffer;
1301
1302     /* method-desciptor starts with parenthesis */
1303     *pos++ = '(';
1304
1305     for (i = 0; i < types->header.size; i++) {
1306                 char ch;
1307
1308                 /* current argument */
1309             classinfo *c = (classinfo *) types->data[i];
1310
1311             /* current position in utf-text */
1312             char *utf_ptr = c->name->text;
1313
1314             /* determine type of argument */
1315             if ((ch = utf_nextu2(&utf_ptr)) == '[') {
1316                 /* arrayclass */
1317                 for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1318                                 *pos++ = *utf_ptr; /* copy text */
1319                         }
1320
1321             } else {
1322                         /* check for primitive types */
1323                         for (j = 0; j < PRIMITIVETYPE_COUNT; j++) {
1324                                 char *utf_pos   = utf_ptr - 1;
1325                                 char *primitive = primitivetype_table[j].wrapname;
1326
1327                                 /* compare text */
1328                                 while (utf_pos < utf_end(c->name)) {
1329                                         if (*utf_pos++ != *primitive++) goto nomatch;
1330                                 }
1331
1332                                 /* primitive type found */
1333                                 *pos++ = primitivetype_table[j].typesig;
1334                                 goto next_type;
1335
1336                         nomatch:
1337                                 ;
1338                         }
1339
1340                         /* no primitive type and no arrayclass, so must be object */
1341                         *pos++ = 'L';
1342
1343                         /* copy text */
1344                         for (utf_ptr--; utf_ptr < utf_end(c->name); utf_ptr++) {
1345                                 *pos++ = *utf_ptr;
1346                         }
1347
1348                         *pos++ = ';';
1349
1350                 next_type:
1351                         ;
1352                 }
1353     }
1354
1355     *pos++ = ')';
1356
1357     if (retType) {
1358                 for (i = 0; i < strlen(retType); i++) {
1359                         *pos++ = retType[i];
1360                 }
1361     }
1362
1363     /* create utf-string */
1364     result = utf_new(buffer, (pos - buffer));
1365     MFREE(buffer, u1, buffer_size);
1366
1367     return result;
1368 }
1369
1370
1371 /******************************************************************************************
1372
1373         retrieve the next argument or returntype from a descriptor
1374         and return the corresponding class
1375
1376 *******************************************************************************************/
1377
1378 classinfo *get_type(char **utf_ptr,char *desc_end, bool skip)
1379 {
1380     classinfo *c = class_from_descriptor(*utf_ptr,desc_end,utf_ptr,
1381                                          (skip) ? CLASSLOAD_SKIP : CLASSLOAD_LOAD);
1382     if (!c)
1383         /* unknown type */
1384         panic("illegal descriptor");
1385
1386     if (skip) return NULL;
1387
1388     use_class_as_object(c);
1389     return c;
1390 }
1391
1392
1393 /******************************************************************************************
1394
1395         use the descriptor of a method to generate a java/lang/Class array
1396         which contains the classes of the parametertypes of the method
1397
1398 *******************************************************************************************/
1399
1400 java_objectarray* get_parametertypes(methodinfo *m)
1401 {
1402     utf  *descr    =  m->descriptor;    /* method-descriptor */
1403     char *utf_ptr  =  descr->text;      /* current position in utf-text */
1404     char *desc_end =  utf_end(descr);   /* points behind utf string     */
1405     java_objectarray* result;
1406     int parametercount = 0;
1407     int i;
1408
1409     /* skip '(' */
1410     utf_nextu2(&utf_ptr);
1411
1412     /* determine number of parameters */
1413     while ( *utf_ptr != ')' ) {
1414         get_type(&utf_ptr,desc_end,true);
1415         parametercount++;
1416     }
1417
1418     /* create class-array */
1419     result = builtin_anewarray(parametercount, class_java_lang_Class);
1420
1421     utf_ptr  =  descr->text;
1422     utf_nextu2(&utf_ptr);
1423
1424     /* get returntype classes */
1425     for (i = 0; i < parametercount; i++)
1426             result->data[i] = (java_objectheader *) get_type(&utf_ptr,desc_end, false);
1427
1428     return result;
1429 }
1430
1431
1432
1433
1434
1435 /******************************************************************************************
1436
1437         get the exceptions which can be thrown by a method
1438
1439 *******************************************************************************************/
1440
1441 java_objectarray* get_exceptiontypes(methodinfo *m) {
1442     u2 exccount=m->thrownexceptionscount;
1443     u2 i;
1444     java_objectarray *result;
1445     /* create class-array */
1446     result = builtin_anewarray(exccount, class_java_lang_Class);
1447     for (i=0;i<exccount;i++) {
1448         java_objectheader *oh=(java_objectheader*)(m->thrownexceptions[i]);
1449         use_class_as_object(oh);
1450         result->data[i]=oh;
1451     }
1452     return result;
1453 }
1454
1455
1456
1457
1458
1459 /******************************************************************************************
1460
1461         get the returntype class of a method
1462
1463 *******************************************************************************************/
1464
1465 classinfo *get_returntype(methodinfo *m)
1466 {
1467         char *utf_ptr;   /* current position in utf-text */
1468         char *desc_end;  /* points behind utf string     */
1469         utf *desc = m->descriptor; /* method-descriptor  */
1470
1471         utf_ptr  = desc->text;
1472         desc_end = utf_end(desc);
1473
1474         /* ignore parametertypes */
1475         while ((utf_ptr<desc_end) && utf_nextu2(&utf_ptr)!=')')
1476                 /* skip */ ;
1477
1478         return get_type(&utf_ptr,desc_end, false);
1479 }
1480
1481
1482 /*****************************************************************************/
1483 /*****************************************************************************/
1484
1485
1486 /*--------------------------------------------------------*/
1487 void printNativeCall(nativeCall nc) {
1488   int i,j;
1489
1490   printf("\n%s's Native Methods call:\n",nc.classname); fflush(stdout);
1491   for (i=0; i<nc.methCnt; i++) {
1492       printf("\tMethod=%s %s\n",nc.methods[i].methodname, nc.methods[i].descriptor);fflush(stdout);
1493
1494     for (j=0; j<nc.callCnt[i]; j++) {
1495         printf("\t\t<%i,%i>aCalled = %s %s %s\n",i,j,
1496         nc.methods[i].methodCalls[j].classname,
1497         nc.methods[i].methodCalls[j].methodname,
1498         nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1499       }
1500     }
1501   printf("-+++++--------------------\n");fflush(stdout);
1502 }
1503
1504 /*--------------------------------------------------------*/
1505 void printCompNativeCall(nativeCompCall nc) {
1506   int i,j;
1507   printf("printCompNativeCall BEGIN\n");fflush(stdout);
1508   printf("\n%s's Native Comp Methods call:\n",nc.classname->text);fflush(stdout);
1509   utf_display(nc.classname); fflush(stdout);
1510
1511   for (i=0; i<nc.methCnt; i++) {
1512     printf("\tMethod=%s %s\n",nc.methods[i].methodname->text,nc.methods[i].descriptor->text);fflush(stdout);
1513     utf_display(nc.methods[i].methodname); fflush(stdout);
1514     utf_display(nc.methods[i].descriptor);fflush(stdout);
1515     printf("\n");fflush(stdout);
1516
1517     for (j=0; j<nc.callCnt[i]; j++) {
1518       printf("\t\t<%i,%i>bCalled = ",i,j);fflush(stdout);
1519         utf_display(nc.methods[i].methodCalls[j].classname);fflush(stdout);
1520         utf_display(nc.methods[i].methodCalls[j].methodname); fflush(stdout);
1521         utf_display(nc.methods[i].methodCalls[j].descriptor);fflush(stdout);
1522         printf("\n");fflush(stdout);
1523       }
1524     }
1525 printf("---------------------\n");fflush(stdout);
1526 }
1527
1528
1529 /*--------------------------------------------------------*/
1530 classMeth findNativeMethodCalls(utf *c, utf *m, utf *d )
1531 {
1532     int i = 0;
1533     int j = 0;
1534     int cnt = 0;
1535     classMeth mc;
1536     mc.i_class = i;
1537     mc.j_method = j;
1538     mc.methCnt = cnt;
1539
1540     return mc;
1541 }
1542
1543 /*--------------------------------------------------------*/
1544 nativeCall* findNativeClassCalls(char *aclassname ) {
1545 int i;
1546
1547 for (i=0;i<NATIVECALLSSIZE; i++) {
1548    /* convert table to utf later to speed up search */
1549    if (strcmp(nativeCalls[i].classname, aclassname) == 0)
1550         return &nativeCalls[i];
1551    }
1552
1553 return NULL;
1554 }
1555 /*--------------------------------------------------------*/
1556 /*--------------------------------------------------------*/
1557 void utfNativeCall(nativeCall nc, nativeCompCall *ncc) {
1558   int i,j;
1559
1560
1561   ncc->classname = utf_new_char(nc.classname);
1562   ncc->methCnt = nc.methCnt;
1563
1564   for (i=0; i<nc.methCnt; i++) {
1565     ncc->methods[i].methodname = utf_new_char(nc.methods[i].methodname);
1566     ncc->methods[i].descriptor = utf_new_char(nc.methods[i].descriptor);
1567     ncc->callCnt[i] = nc.callCnt[i];
1568
1569     for (j=0; j<nc.callCnt[i]; j++) {
1570
1571         ncc->methods[i].methodCalls[j].classname  = utf_new_char(nc.methods[i].methodCalls[j].classname);
1572
1573         if (strcmp("", nc.methods[i].methodCalls[j].methodname) != 0) {
1574           ncc->methods[i].methodCalls[j].methodname = utf_new_char(nc.methods[i].methodCalls[j].methodname);
1575           ncc->methods[i].methodCalls[j].descriptor = utf_new_char(nc.methods[i].methodCalls[j].descriptor);
1576           }
1577         else {
1578           ncc->methods[i].methodCalls[j].methodname = NULL;
1579           ncc->methods[i].methodCalls[j].descriptor = NULL;
1580           }
1581       }
1582     }
1583 }
1584
1585
1586
1587 /*--------------------------------------------------------*/
1588
1589 bool natcall2utf(bool natcallcompdone) {
1590 int i;
1591
1592 if (natcallcompdone)
1593         return true;
1594
1595 for (i=0;i<NATIVECALLSSIZE; i++) {
1596    utfNativeCall  (nativeCalls[i], &nativeCompCalls[i]);
1597    }
1598
1599 return true;
1600 }
1601
1602 /*--------------------------------------------------------*/
1603
1604
1605 java_objectarray *builtin_asm_createclasscontextarray(classinfo **end,classinfo **start) {
1606 #warning platform dependend
1607         java_objectarray *tmpArray;
1608         int i;
1609         classinfo **current;
1610         classinfo *c;
1611         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1612 /*      printf("end %p, start %p, size %ld\n",end,start,size);*/
1613         if (!class_java_lang_Class)
1614                 class_java_lang_Class = class_new(utf_new_char ("java/lang/Class"));
1615         if (!class_java_lang_SecurityManager)
1616                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1617         if (size>0) {
1618                 if (start==class_java_lang_SecurityManager) {
1619                         size--;
1620                         start--;
1621                 }
1622         }
1623         tmpArray=builtin_newarray(size, class_array_of(class_java_lang_Class)->vftbl);
1624
1625         for(i=0,current=start;i<size;i++,current--) {
1626                 c=*current;
1627 /*              printf("%d\n",i);
1628                 utf_display(c->name);*/
1629                 use_class_as_object(c);
1630                 tmpArray->data[i]=c;
1631         }
1632         return tmpArray;
1633
1634 }
1635
1636 java_lang_ClassLoader *builtin_asm_getclassloader(classinfo **end,classinfo **start) {
1637 #warning platform dependend
1638         int i;
1639         classinfo **current;
1640         classinfo *c;
1641         classinfo *privilegedAction;
1642         size_t size=(((size_t)start)-((size_t)end)) / sizeof (classinfo*);
1643 /*      log_text("builtin_asm_getclassloader");
1644         printf("end %p, start %p, size %ld\n",end,start,size);*/
1645
1646         if (!class_java_lang_SecurityManager)
1647                 class_java_lang_SecurityManager = class_new(utf_new_char ("java/lang/SecurityManager"));
1648         if (size>0) {
1649                 if (start==class_java_lang_SecurityManager) {
1650                         size--;
1651                         start--;
1652                 }
1653         }
1654
1655         privilegedAction=class_new(utf_new_char("java/security/PrivilegedAction"));
1656
1657         for(i=0,current=start;i<size;i++,current--) {
1658                 c=*current;
1659                 if (c==privilegedAction) return NULL;
1660                 if (c->classloader) return c->classloader;
1661         }
1662         return NULL;
1663
1664
1665
1666
1667 /*
1668         log_text("Java_java_lang_VMSecurityManager_currentClassLoader");
1669         init_systemclassloader();
1670
1671         return SystemClassLoader;*/
1672 }
1673
1674 /*
1675  * These are local overrides for various environment variables in Emacs.
1676  * Please do not remove this and leave it at the end of the file, where
1677  * Emacs will automagically detect them.
1678  * ---------------------------------------------------------------------
1679  * Local variables:
1680  * mode: c
1681  * indent-tabs-mode: t
1682  * c-basic-offset: 4
1683  * tab-width: 4
1684  * End:
1685  */