src/vm/resolve.h

   1 /* src/vm/resolve.h - resolving classes/interfaces/fields/methods
   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    $Id: resolve.h 7486 2007-03-08 13:50:07Z twisti $
  26
  27 */
  28
  29
  30 #ifndef _RESOLVE_H
  31 #define _RESOLVE_H
  32
  33 /* forward declarations *******************************************************/
  34
  35 typedef struct unresolved_class unresolved_class;
  36 typedef struct unresolved_field unresolved_field;
  37 typedef struct unresolved_method unresolved_method;
  38 typedef struct unresolved_subtype_set unresolved_subtype_set;
  39
  40
  41 #include "config.h"
  42 #include "vm/types.h"
  43
  44 #include "vm/global.h"
  45
  46 #include "vm/jit/jit.h"
  47 #include "vm/jit/reg.h"
  48 #include "vm/jit/verify/typeinfo.h"
  49
  50 #include "vmcore/class.h"
  51 #include "vmcore/field.h"
  52 #include "vmcore/method.h"
  53 #include "vmcore/references.h"
  54
  55
  56 /* constants ******************************************************************/
  57
  58 #define RESOLVE_STATIC    0x0001  /* ref to static fields/methods             */
  59 #define RESOLVE_PUTFIELD  0x0002  /* field ref inside a PUT{FIELD,STATIC}...  */
  60 #define RESOLVE_SPECIAL   0x0004  /* method ref inside INVOKESPECIAL          */
  61
  62
  63 /* enums **********************************************************************/
  64
  65 typedef enum {
  66         resolveLazy,
  67         resolveEager
  68 } resolve_mode_t;
  69
  70 typedef enum {
  71         resolveLinkageError,
  72         resolveIllegalAccessError
  73 } resolve_err_t;
  74
  75 typedef enum {
  76         resolveFailed = false,  /* this must be a false value */
  77         resolveDeferred = true, /* this must be a true value  */
  78         resolveSucceeded
  79 } resolve_result_t;
  80
  81 /* structs ********************************************************************/
  82
  83 struct unresolved_subtype_set {
  84         classref_or_classinfo *subtyperefs;     /* NULL terminated list */
  85 };
  86
  87 struct unresolved_class {
  88         constant_classref      *classref;
  89         methodinfo                     *referermethod;
  90         unresolved_subtype_set  subtypeconstraints;
  91 };
  92
  93 /* XXX unify heads of unresolved_field and unresolved_method? */
  94
  95 struct unresolved_field {
  96         constant_FMIref *fieldref;
  97         methodinfo      *referermethod;
  98         s4               flags;
  99
 100         unresolved_subtype_set  instancetypes;
 101         unresolved_subtype_set  valueconstraints;
 102 };
 103
 104 struct unresolved_method {
 105         constant_FMIref *methodref;
 106         methodinfo      *referermethod;
 107         s4               flags;
 108
 109         unresolved_subtype_set  instancetypes;
 110         unresolved_subtype_set *paramconstraints;
 111 };
 112
 113 #define SUBTYPESET_IS_EMPTY(stset) \
 114         ((stset).subtyperefs == NULL)
 115
 116 #define UNRESOLVED_SUBTYPE_SET_EMTPY(stset) \
 117         do { (stset).subtyperefs = NULL; } while(0)
 118
 119 /* function prototypes ********************************************************/
 120
 121 bool resolve_class_from_name(classinfo* referer,methodinfo *refmethod,
 122                                                 utf *classname,
 123                                                 resolve_mode_t mode,
 124                                                 bool checkaccess,
 125                                                 bool link,
 126                                                 classinfo **result);
 127
 128 bool resolve_classref(methodinfo *refmethod,
 129                                  constant_classref *ref,
 130                                  resolve_mode_t mode,
 131                                  bool checkaccess,
 132                              bool link,
 133                                  classinfo **result);
 134
 135 bool resolve_classref_or_classinfo(methodinfo *refmethod,
 136                                                           classref_or_classinfo cls,
 137                                                           resolve_mode_t mode,
 138                                                           bool checkaccess,
 139                                                           bool link,
 140                                                           classinfo **result);
 141
 142 classinfo *resolve_classref_or_classinfo_eager(classref_or_classinfo cls, bool checkaccess);
 143
 144 bool resolve_class_from_typedesc(typedesc *d,bool checkaccess,bool link,classinfo **result);
 145
 146 #ifdef ENABLE_VERIFIER
 147 bool resolve_class(unresolved_class *ref,
 148                           resolve_mode_t mode,
 149                           bool checkaccess,
 150                           classinfo **result);
 151
 152 classinfo * resolve_class_eager(unresolved_class *ref);
 153 classinfo * resolve_class_eager_no_access_check(unresolved_class *ref);
 154 #endif /* ENABLE_VERIFIER */
 155
 156 bool resolve_field(unresolved_field *ref,
 157                           resolve_mode_t mode,
 158                           fieldinfo **result);
 159
 160 bool resolve_method(unresolved_method *ref,
 161                           resolve_mode_t mode,
 162                            methodinfo **result);
 163
 164 classinfo * resolve_classref_eager(constant_classref *ref);
 165 classinfo * resolve_classref_eager_nonabstract(constant_classref *ref);
 166 fieldinfo * resolve_field_eager(unresolved_field *ref);
 167 methodinfo * resolve_method_eager(unresolved_method *ref);
 168
 169 #ifdef ENABLE_VERIFIER
 170 unresolved_class * create_unresolved_class(methodinfo *refmethod,
 171                                                 constant_classref *classref,
 172                                                 typeinfo *valuetype);
 173 #endif
 174
 175 unresolved_field *resolve_create_unresolved_field(classinfo *referer,
 176                                                                                           methodinfo *refmethod,
 177                                                                                           instruction *iptr);
 178
 179 unresolved_method * resolve_create_unresolved_method(classinfo *referer,
 180                                                                                                          methodinfo *refmethod,
 181                                                                                                          constant_FMIref *methodref,
 182                                                                                                          bool invokestatic,
 183                                                                                                          bool invokespecial);
 184
 185 void unresolved_class_free(unresolved_class *ref);
 186 void unresolved_field_free(unresolved_field *ref);
 187 void unresolved_method_free(unresolved_method *ref);
 188
 189 resolve_result_t resolve_method_lazy(methodinfo *refmethod,
 190                                                                          constant_FMIref *methodref,
 191                                                                          bool invokespecial);
 192
 193 resolve_result_t resolve_field_lazy(methodinfo *refmethod,
 194                                                                         constant_FMIref *fieldref);
 195
 196 #if defined(ENABLE_VERIFIER)
 197 resolve_result_t resolve_field_verifier_checks(methodinfo *refmethod,
 198                                                                                            constant_FMIref *fieldref,
 199                                                                                            classinfo *container,
 200                                                                                            fieldinfo *fi,
 201                                                                                            typeinfo *instanceti,
 202                                                                                            typeinfo *valueti,
 203                                                                                            bool isstatic,
 204                                                                                            bool isput);
 205
 206 bool resolve_constrain_unresolved_field(unresolved_field *ref,
 207                                                                                 classinfo *referer,
 208                                                                                 methodinfo *refmethod,
 209                                                                             typeinfo *instanceti,
 210                                                                             typeinfo *valueti);
 211
 212 resolve_result_t resolve_method_verifier_checks(methodinfo *refmethod,
 213                                                                                                 constant_FMIref *methodref,
 214                                                                                                 methodinfo *mi,
 215                                                                                                 bool invokestatic);
 216
 217 resolve_result_t resolve_method_instance_type_checks(methodinfo *refmethod,
 218                                                                                                          methodinfo *mi,
 219                                                                                                          typeinfo *instanceti,
 220                                                                                                          bool invokespecial);
 221
 222 resolve_result_t resolve_method_param_type_checks(jitdata *jd,
 223                                                                                                   methodinfo *refmethod,
 224                                                                                                   instruction *iptr,
 225                                                                                                   methodinfo *mi,
 226                                                                                                   bool invokestatic);
 227
 228 resolve_result_t resolve_method_param_type_checks_stackbased(
 229                 methodinfo *refmethod,
 230                 methodinfo *mi,
 231                 bool invokestatic,
 232                 typedescriptor *stack);
 233
 234 bool resolve_method_loading_constraints(classinfo *referer,
 235                                                                                 methodinfo *mi);
 236
 237 bool resolve_constrain_unresolved_method_instance(unresolved_method *ref,
 238                                                                                                   methodinfo *refmethod,
 239                                                                                                   typeinfo *instanceti,
 240                                                                                                   bool invokespecial);
 241
 242 bool resolve_constrain_unresolved_method_params(jitdata *jd,
 243                                                                                                 unresolved_method *ref,
 244                                                                                                 methodinfo *refmethod,
 245                                                                                                 instruction *iptr);
 246
 247 bool resolve_constrain_unresolved_method_params_stackbased(
 248                 unresolved_method *ref,
 249                 methodinfo *refmethod,
 250                 typedescriptor *stack);
 251
 252 #endif /* defined(ENABLE_VERIFIER) */
 253
 254 #ifndef NDEBUG
 255 void unresolved_class_debug_dump(unresolved_class *ref,FILE *file);
 256 void unresolved_field_debug_dump(unresolved_field *ref,FILE *file);
 257 void unresolved_method_debug_dump(unresolved_method *ref,FILE *file);
 258 void unresolved_subtype_set_debug_dump(unresolved_subtype_set *stset,FILE *file);
 259 #endif
 260
 261 #endif /* _RESOLVE_H */
 262
 263 /*
 264  * These are local overrides for various environment variables in Emacs.
 265  * Please do not remove this and leave it at the end of the file, where
 266  * Emacs will automagically detect them.
 267  * ---------------------------------------------------------------------
 268  * Local variables:
 269  * mode: c
 270  * indent-tabs-mode: t
 271  * c-basic-offset: 4
 272  * tab-width: 4
 273  * End:
 274  * vim:noexpandtab:sw=4:ts=4:
 275  */
 276