src/vm/resolve.h

   1 /* vm/resolve.h - resolving classes/interfaces/fields/methods
   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: Edwin Steiner
  28
  29    Changes:
  30
  31    $Id: resolve.h 4357 2006-01-22 23:33:38Z twisti $
  32
  33 */
  34
  35
  36 #ifndef _RESOLVE_H
  37 #define _RESOLVE_H
  38
  39 /* forward declarations *******************************************************/
  40
  41 typedef struct unresolved_class unresolved_class;
  42 typedef struct unresolved_field unresolved_field;
  43 typedef struct unresolved_method unresolved_method;
  44 typedef struct unresolved_subtype_set unresolved_subtype_set;
  45
  46
  47 #include "config.h"
  48 #include "vm/types.h"
  49 #include "vm/global.h"
  50 #include "vm/references.h"
  51 #include "vm/jit/jit.h"
  52
  53
  54 /* constants ******************************************************************/
  55
  56 #define RESOLVE_STATIC    0x0001  /* ref to static fields/methods             */
  57 #define RESOLVE_PUTFIELD  0x0002  /* field ref inside a PUT{FIELD,STATIC}...  */
  58 #define RESOLVE_SPECIAL   0x0004  /* method ref inside INVOKESPECIAL          */
  59
  60
  61 /* enums **********************************************************************/
  62
  63 typedef enum {
  64         resolveLazy,
  65         resolveEager
  66 } resolve_mode_t;
  67
  68
  69 typedef enum {
  70         resolveLinkageError,
  71         resolveIllegalAccessError
  72 } resolve_err_t;
  73
  74
  75 /* structs ********************************************************************/
  76
  77 struct unresolved_subtype_set {
  78         classref_or_classinfo *subtyperefs;     /* NULL terminated list */
  79 };
  80
  81 struct unresolved_class {
  82         constant_classref      *classref;
  83         methodinfo                     *referermethod;
  84         unresolved_subtype_set  subtypeconstraints;
  85 };
  86
  87 /* XXX unify heads of unresolved_field and unresolved_method? */
  88
  89 struct unresolved_field {
  90         constant_FMIref *fieldref;
  91         methodinfo      *referermethod;
  92         s4               flags;
  93
  94         unresolved_subtype_set  instancetypes;
  95         unresolved_subtype_set  valueconstraints;
  96 };
  97
  98 struct unresolved_method {
  99         constant_FMIref *methodref;
 100         methodinfo      *referermethod;
 101         s4               flags;
 102
 103         unresolved_subtype_set  instancetypes;
 104         unresolved_subtype_set *paramconstraints;
 105 };
 106
 107 #define SUBTYPESET_IS_EMPTY(stset) \
 108         ((stset).subtyperefs == NULL)
 109
 110 #define UNRESOLVED_SUBTYPE_SET_EMTPY(stset) \
 111         do { (stset).subtyperefs = NULL; } while(0)
 112
 113 /* function prototypes ********************************************************/
 114
 115 bool resolve_class_from_name(classinfo* referer,methodinfo *refmethod,
 116                                                 utf *classname,
 117                                                 resolve_mode_t mode,
 118                                                 bool checkaccess,
 119                                                 bool link,
 120                                                 classinfo **result);
 121
 122 bool resolve_classref(methodinfo *refmethod,
 123                                  constant_classref *ref,
 124                                  resolve_mode_t mode,
 125                                  bool checkaccess,
 126                              bool link,
 127                                  classinfo **result);
 128
 129 bool resolve_classref_or_classinfo(methodinfo *refmethod,
 130                                                           classref_or_classinfo cls,
 131                                                           resolve_mode_t mode,
 132                                                           bool checkaccess,
 133                                                           bool link,
 134                                                           classinfo **result);
 135
 136 bool resolve_class_from_typedesc(typedesc *d,bool checkaccess,bool link,classinfo **result);
 137
 138 #ifdef ENABLE_VERIFIER
 139 bool resolve_class(unresolved_class *ref,
 140                           resolve_mode_t mode,
 141                           bool checkaccess,
 142                           classinfo **result);
 143
 144 classinfo * resolve_class_eager(unresolved_class *ref);
 145 #endif /* ENABLE_VERIFIER */
 146
 147 bool resolve_field(unresolved_field *ref,
 148                           resolve_mode_t mode,
 149                           fieldinfo **result);
 150
 151 bool resolve_method(unresolved_method *ref,
 152                           resolve_mode_t mode,
 153                            methodinfo **result);
 154
 155 classinfo * resolve_classref_eager(constant_classref *ref);
 156 classinfo * resolve_classref_eager_nonabstract(constant_classref *ref);
 157 fieldinfo * resolve_field_eager(unresolved_field *ref);
 158 methodinfo * resolve_method_eager(unresolved_method *ref);
 159
 160 #ifdef ENABLE_VERIFIER
 161 unresolved_class * create_unresolved_class(methodinfo *refmethod,
 162                                                 constant_classref *classref,
 163                                                 typeinfo *valuetype);
 164 #endif
 165
 166 unresolved_field * create_unresolved_field(classinfo *referer,methodinfo *refmethod,
 167                                                 instruction *iptr);
 168
 169 unresolved_method * create_unresolved_method(classinfo *referer,methodinfo *refmethod,
 170                                                  instruction *iptr);
 171
 172 void unresolved_class_free(unresolved_class *ref);
 173 void unresolved_field_free(unresolved_field *ref);
 174 void unresolved_method_free(unresolved_method *ref);
 175
 176 #ifdef ENABLE_VERIFIER
 177 bool constrain_unresolved_field(unresolved_field *ref,
 178                                                    classinfo *referer,methodinfo *refmethod,
 179                                                    instruction *iptr,
 180                                                    stackelement *stack);
 181
 182 bool constrain_unresolved_method(unresolved_method *ref,
 183                                                         classinfo *referer,methodinfo *refmethod,
 184                                                         instruction *iptr,
 185                                                         stackelement *stack);
 186
 187 bool resolve_and_check_subtype_set(classinfo *referer,methodinfo *refmethod,
 188                                                           unresolved_subtype_set *ref,
 189                                                           classref_or_classinfo type,
 190                                                           bool reversed,
 191                                                           resolve_mode_t mode,
 192                                                           resolve_err_t error,
 193                                                           bool *checked);
 194 #endif
 195
 196 #ifndef NDEBUG
 197 void unresolved_class_debug_dump(unresolved_class *ref,FILE *file);
 198 void unresolved_field_debug_dump(unresolved_field *ref,FILE *file);
 199 void unresolved_method_debug_dump(unresolved_method *ref,FILE *file);
 200 void unresolved_subtype_set_debug_dump(unresolved_subtype_set *stset,FILE *file);
 201 #endif
 202
 203 #endif /* _RESOLVE_H */
 204
 205 /*
 206  * These are local overrides for various environment variables in Emacs.
 207  * Please do not remove this and leave it at the end of the file, where
 208  * Emacs will automagically detect them.
 209  * ---------------------------------------------------------------------
 210  * Local variables:
 211  * mode: c
 212  * indent-tabs-mode: t
 213  * c-basic-offset: 4
 214  * tab-width: 4
 215  * End:
 216  * vim:noexpandtab:sw=4:ts=4:
 217  */
 218