src/vmcore/loader.h

   1 /* src/vmcore/loader.h - class loader header
   2
   3    Copyright (C) 1996-2005, 2006, 2007 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 */
  26
  27
  28 #ifndef _LOADER_H
  29 #define _LOADER_H
  30
  31 /* forward typedefs ***********************************************************/
  32
  33 typedef struct classbuffer classbuffer;
  34
  35
  36 #include "config.h"
  37
  38 #include <stdio.h>
  39
  40 #include "vm/types.h"
  41
  42 #include "vm/global.h"
  43
  44 #include "vmcore/descriptor.h"
  45 #include "vmcore/class.h"
  46 #include "vmcore/method.h"
  47 #include "vmcore/references.h"
  48 #include "vmcore/utf8.h"
  49
  50
  51 /* constant pool entries *******************************************************
  52
  53         All constant pool entries need a data structure which contain the entrys
  54         value. In some cases this structure exist already, in the remaining cases
  55         this structure must be generated:
  56
  57                 kind                      structure                     generated?
  58         ----------------------------------------------------------------------
  59     CONSTANT_Class               constant_classref                  yes
  60     CONSTANT_Fieldref            constant_FMIref                    yes
  61     CONSTANT_Methodref           constant_FMIref                    yes
  62     CONSTANT_InterfaceMethodref  constant_FMIref                    yes
  63     CONSTANT_String              unicode                             no
  64     CONSTANT_Integer             constant_integer                   yes
  65     CONSTANT_Float               constant_float                     yes
  66     CONSTANT_Long                constant_long                      yes
  67     CONSTANT_Double              constant_double                    yes
  68     CONSTANT_NameAndType         constant_nameandtype               yes
  69     CONSTANT_Utf8                unicode                             no
  70     CONSTANT_UNUSED              -
  71
  72 *******************************************************************************/
  73
  74 typedef struct {            /* Integer                                        */
  75         s4 value;
  76 } constant_integer;
  77
  78
  79 typedef struct {            /* Float                                          */
  80         float value;
  81 } constant_float;
  82
  83
  84 typedef struct {            /* Long                                           */
  85         s8 value;
  86 } constant_long;
  87
  88
  89 typedef struct {            /* Double                                         */
  90         double value;
  91 } constant_double;
  92
  93
  94 typedef struct {            /* NameAndType (Field or Method)                  */
  95         utf *name;              /* field/method name                              */
  96         utf *descriptor;        /* field/method type descriptor string            */
  97 } constant_nameandtype;
  98
  99
 100 /* classbuffer ****************************************************************/
 101
 102 struct classbuffer {
 103         classinfo *class;                   /* pointer to classinfo structure     */
 104         u1        *data;                    /* pointer to byte code               */
 105         s4         size;                    /* size of the byte code              */
 106         u1        *pos;                     /* current read position              */
 107         char      *path;                    /* path to file (for debugging)       */
 108 };
 109
 110
 111 /* classloader ****************************************************************/
 112
 113 typedef java_object_t classloader;
 114
 115
 116 /* function prototypes ********************************************************/
 117
 118 void loader_preinit(void);
 119 void loader_init(void);
 120
 121 void loader_load_all_classes(void);
 122
 123 bool loader_skip_attribute_body(classbuffer *cb);
 124
 125 #if defined(ENABLE_JAVASE)
 126 bool loader_load_attribute_signature(classbuffer *cb, utf **signature);
 127 #endif
 128
 129 /* free resources */
 130 void loader_close(void);
 131
 132 /* class loading functions */
 133 classinfo *load_class_from_sysloader(utf *name);
 134 classinfo *load_class_from_classloader(utf *name, classloader *cl);
 135 classinfo *load_class_bootstrap(utf *name);
 136
 137 /* (don't use the following directly) */
 138 classinfo *load_class_from_classbuffer(classbuffer *cb);
 139 classinfo *load_newly_created_array(classinfo *c, classloader *loader);
 140
 141 #endif /* _LOADER_H */
 142
 143 /*
 144  * These are local overrides for various environment variables in Emacs.
 145  * Please do not remove this and leave it at the end of the file, where
 146  * Emacs will automagically detect them.
 147  * ---------------------------------------------------------------------
 148  * Local variables:
 149  * mode: c
 150  * indent-tabs-mode: t
 151  * c-basic-offset: 4
 152  * tab-width: 4
 153  * End:
 154  * vim:noexpandtab:sw=4:ts=4:
 155  */