src/vm/loader.h

   1 /* src/vm/loader.h - class loader header
   2
   3    Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25    Contact: cacao@cacaojvm.org
  26
  27    Authors: Reinhard Grafl
  28
  29    Changes: Christian Thalinger
  30
  31    $Id: loader.h 4357 2006-01-22 23:33:38Z twisti $
  32 */
  33
  34
  35 #ifndef _LOADER_H
  36 #define _LOADER_H
  37
  38 #include "config.h"
  39
  40 #include <stdio.h>
  41
  42 #include "vm/types.h"
  43
  44
  45 /* forward typedefs ***********************************************************/
  46
  47 typedef struct classbuffer classbuffer;
  48
  49
  50 #include "vm/class.h"
  51 #include "vm/descriptor.h"
  52 #include "vm/global.h"
  53 #include "vm/references.h"
  54 #include "vm/method.h"
  55 #include "vm/utf8.h"
  56
  57
  58 /* constant pool entries *******************************************************
  59
  60         All constant pool entries need a data structure which contain the entrys
  61         value. In some cases this structure exist already, in the remaining cases
  62         this structure must be generated:
  63
  64                 kind                      structure                     generated?
  65         ----------------------------------------------------------------------
  66     CONSTANT_Class               classinfo                           no   XXX this will change
  67     CONSTANT_Fieldref            constant_FMIref                    yes
  68     CONSTANT_Methodref           constant_FMIref                    yes
  69     CONSTANT_InterfaceMethodref  constant_FMIref                    yes
  70     CONSTANT_String              unicode                             no
  71     CONSTANT_Integer             constant_integer                   yes
  72     CONSTANT_Float               constant_float                     yes
  73     CONSTANT_Long                constant_long                      yes
  74     CONSTANT_Double              constant_double                    yes
  75     CONSTANT_NameAndType         constant_nameandtype               yes
  76     CONSTANT_Utf8                unicode                             no
  77     CONSTANT_UNUSED              -
  78
  79 *******************************************************************************/
  80
  81 typedef struct {            /* Integer                                        */
  82         s4 value;
  83 } constant_integer;
  84
  85
  86 typedef struct {            /* Float                                          */
  87         float value;
  88 } constant_float;
  89
  90
  91 typedef struct {            /* Long                                           */
  92         s8 value;
  93 } constant_long;
  94
  95
  96 typedef struct {            /* Double                                         */
  97         double value;
  98 } constant_double;
  99
 100
 101 typedef struct {            /* NameAndType (Field or Method)                  */
 102         utf *name;              /* field/method name                              */
 103         utf *descriptor;        /* field/method type descriptor string            */
 104 } constant_nameandtype;
 105
 106
 107 /* classbuffer ****************************************************************/
 108
 109 struct classbuffer {
 110         classinfo *class;                   /* pointer to classinfo structure     */
 111         u1        *data;                    /* pointer to byte code               */
 112         s4         size;                    /* size of the byte code              */
 113         u1        *pos;                     /* current read position              */
 114         char      *path;                    /* path to file (for debugging)       */
 115 };
 116
 117
 118 /* export variables ***********************************************************/
 119
 120 #if defined(USE_THREADS)
 121 extern int blockInts;
 122 #endif
 123
 124
 125 /* function prototypes ********************************************************/
 126
 127 /* initialize loader, load important systemclasses */
 128 bool loader_init(u1 *stackbottom);
 129
 130 void loader_load_all_classes(void);
 131
 132 /* free resources */
 133 void loader_close(void);
 134
 135 /* class loading functions */
 136 classinfo *load_class_from_sysloader(utf *name);
 137 classinfo *load_class_from_classloader(utf *name, java_objectheader *cl);
 138 classinfo *load_class_bootstrap(utf *name);
 139
 140 /* (don't use the following directly) */
 141 classinfo *load_class_from_classbuffer(classbuffer *cb);
 142 classinfo *load_newly_created_array(classinfo *c,java_objectheader *loader);
 143
 144 #endif /* _LOADER_H */
 145
 146 /*
 147  * These are local overrides for various environment variables in Emacs.
 148  * Please do not remove this and leave it at the end of the file, where
 149  * Emacs will automagically detect them.
 150  * ---------------------------------------------------------------------
 151  * Local variables:
 152  * mode: c
 153  * indent-tabs-mode: t
 154  * c-basic-offset: 4
 155  * tab-width: 4
 156  * End:
 157  */