src/vm/resolve.h

   1 /* src/vm/resolve.h - resolving classes/interfaces/fields/methods
   2
   3    Copyright (C) 1996-2005, 2006, 2007, 2008
   4    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
   5
   6    This file is part of CACAO.
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21    02110-1301, USA.
  22
  23 */
  24
  25
  26 #ifndef _RESOLVE_H
  27 #define _RESOLVE_H
  28
  29 /* forward declarations *******************************************************/
  30
  31 typedef struct unresolved_class unresolved_class;
  32 typedef struct unresolved_field unresolved_field;
  33 typedef struct unresolved_method unresolved_method;
  34 typedef struct unresolved_subtype_set unresolved_subtype_set;
  35
  36
  37 #include "config.h"
  38 #include "vm/types.h"
  39
  40 #include "vm/global.h"
  41
  42 #include "vm/jit/jit.h"
  43 #include "vm/jit/reg.h"
  44 #include "vm/jit/verify/typeinfo.h"
  45
  46 #include "vmcore/class.h"
  47 #include "vmcore/field.h"
  48 #include "vmcore/method.h"
  49 #include "vmcore/references.h"
  50
  51
  52 /* constants ******************************************************************/
  53
  54 #define RESOLVE_STATIC    0x0001  /* ref to static fields/methods             */
  55 #define RESOLVE_PUTFIELD  0x0002  /* field ref inside a PUT{FIELD,STATIC}...  */
  56 #define RESOLVE_SPECIAL   0x0004  /* method ref inside INVOKESPECIAL          */
  57
  58
  59 /* enums **********************************************************************/
  60
  61 typedef enum {
  62         resolveLazy,
  63         resolveEager
  64 } resolve_mode_t;
  65
  66 typedef enum {
  67         resolveLinkageError,
  68         resolveIllegalAccessError
  69 } resolve_err_t;
  70
  71 typedef enum {
  72         resolveFailed = false,  /* this must be a false value */
  73         resolveDeferred = true, /* this must be a true value  */
  74         resolveSucceeded
  75 } resolve_result_t;
  76
  77 /* structs ********************************************************************/
  78
  79 struct unresolved_subtype_set {
  80         classref_or_classinfo *subtyperefs;     /* NULL terminated list */
  81 };
  82
  83 struct unresolved_class {
  84         constant_classref      *classref;
  85         methodinfo                     *referermethod;
  86         unresolved_subtype_set  subtypeconstraints;
  87 };
  88
  89 /* XXX unify heads of unresolved_field and unresolved_method? */
  90
  91 struct unresolved_field {
  92         constant_FMIref *fieldref;
  93         methodinfo      *referermethod;
  94         s4               flags;
  95
  96         unresolved_subtype_set  instancetypes;
  97         unresolved_subtype_set  valueconstraints;
  98 };
  99
 100 struct unresolved_method {
 101         constant_FMIref *methodref;
 102         methodinfo      *referermethod;
 103         s4               flags;
 104
 105         unresolved_subtype_set  instancetypes;
 106         unresolved_subtype_set *paramconstraints;
 107 };
 108
 109 #define SUBTYPESET_IS_EMPTY(stset) \
 110         ((stset).subtyperefs == NULL)
 111
 112 #define UNRESOLVED_SUBTYPE_SET_EMTPY(stset) \
 113         do { (stset).subtyperefs = NULL; } while(0)
 114
 115
 116 /* function prototypes ********************************************************/
 117
 118 void resolve_handle_pending_exception(bool throwError);
 119
 120 bool resolve_class_from_name(classinfo* referer,methodinfo *refmethod,
 121                                                 utf *classname,
 122                                                 resolve_mode_t mode,
 123                                                 bool checkaccess,
 124                                                 bool link,
 125                                                 classinfo **result);
 126
 127 bool resolve_classref(methodinfo *refmethod,
 128                                  constant_classref *ref,
 129                                  resolve_mode_t mode,
 130                                  bool checkaccess,
 131                              bool link,
 132                                  classinfo **result);
 133
 134 bool resolve_classref_or_classinfo(methodinfo *refmethod,
 135                                                           classref_or_classinfo cls,
 136                                                           resolve_mode_t mode,
 137                                                           bool checkaccess,
 138                                                           bool link,
 139                                                           classinfo **result);
 140
 141 classinfo *resolve_classref_or_classinfo_eager(classref_or_classinfo cls, bool checkaccess);
 142
 143 bool resolve_class_from_typedesc(typedesc *d,bool checkaccess,bool link,classinfo **result);
 144
 145 #ifdef ENABLE_VERIFIER
 146 bool resolve_class(unresolved_class *ref,
 147                           resolve_mode_t mode,
 148                           bool checkaccess,
 149                           classinfo **result);
 150
 151 classinfo * resolve_class_eager(unresolved_class *ref);
 152 classinfo * resolve_class_eager_no_access_check(unresolved_class *ref);
 153 #endif /* ENABLE_VERIFIER */
 154
 155 bool resolve_field(unresolved_field *ref,
 156                           resolve_mode_t mode,
 157                           fieldinfo **result);
 158
 159 bool resolve_method(unresolved_method *ref,
 160                           resolve_mode_t mode,
 161                            methodinfo **result);
 162
 163 classinfo * resolve_classref_eager(constant_classref *ref);
 164 classinfo * resolve_classref_eager_nonabstract(constant_classref *ref);
 165 fieldinfo * resolve_field_eager(unresolved_field *ref);
 166 methodinfo * resolve_method_eager(unresolved_method *ref);
 167
 168 #ifdef ENABLE_VERIFIER
 169 unresolved_class * create_unresolved_class(methodinfo *refmethod,
 170                                                 constant_classref *classref,
 171                                                 typeinfo_t *valuetype);
 172 #endif
 173
 174 unresolved_field *resolve_create_unresolved_field(classinfo *referer,
 175                                                                                           methodinfo *refmethod,
 176                                                                                           instruction *iptr);
 177
 178 unresolved_method * resolve_create_unresolved_method(classinfo *referer,
 179                                                                                                          methodinfo *refmethod,
 180                                                                                                          constant_FMIref *methodref,
 181                                                                                                          bool invokestatic,
 182                                                                                                          bool invokespecial);
 183
 184 void unresolved_class_free(unresolved_class *ref);
 185 void unresolved_field_free(unresolved_field *ref);
 186 void unresolved_method_free(unresolved_method *ref);
 187
 188 resolve_result_t resolve_method_lazy(methodinfo *refmethod,
 189                                                                          constant_FMIref *methodref,
 190                                                                          bool invokespecial);
 191
 192 resolve_result_t resolve_field_lazy(methodinfo *refmethod,
 193                                                                         constant_FMIref *fieldref);
 194
 195 #if defined(ENABLE_VERIFIER)
 196 resolve_result_t resolve_field_verifier_checks(methodinfo *refmethod,
 197                                                                                            constant_FMIref *fieldref,
 198                                                                                            classinfo *container,
 199                                                                                            fieldinfo *fi,
 200                                                                                            typeinfo_t *instanceti,
 201                                                                                            typeinfo_t *valueti,
 202                                                                                            bool isstatic,
 203                                                                                            bool isput);
 204
 205 bool resolve_constrain_unresolved_field(unresolved_field *ref,
 206                                                                                 classinfo *referer,
 207                                                                                 methodinfo *refmethod,
 208                                                                             typeinfo_t *instanceti,
 209                                                                             typeinfo_t *valueti);
 210
 211 resolve_result_t resolve_method_verifier_checks(methodinfo *refmethod,
 212                                                                                                 constant_FMIref *methodref,
 213                                                                                                 methodinfo *mi,
 214                                                                                                 bool invokestatic);
 215
 216 resolve_result_t resolve_method_instance_type_checks(methodinfo *refmethod,
 217                                                                                                          methodinfo *mi,
 218                                                                                                          typeinfo_t *instanceti,
 219                                                                                                          bool invokespecial);
 220
 221 resolve_result_t resolve_method_param_type_checks(jitdata *jd,
 222                                                                                                   methodinfo *refmethod,
 223                                                                                                   instruction *iptr,
 224                                                                                                   methodinfo *mi,
 225                                                                                                   bool invokestatic);
 226
 227 resolve_result_t resolve_method_param_type_checks_stackbased(
 228                 methodinfo *refmethod,
 229                 methodinfo *mi,
 230                 bool invokestatic,
 231                 typedescriptor_t *stack);
 232
 233 bool resolve_method_loading_constraints(classinfo *referer,
 234                                                                                 methodinfo *mi);
 235
 236 bool resolve_constrain_unresolved_method_instance(unresolved_method *ref,
 237                                                                                                   methodinfo *refmethod,
 238                                                                                                   typeinfo_t *instanceti,
 239                                                                                                   bool invokespecial);
 240
 241 bool resolve_constrain_unresolved_method_params(jitdata *jd,
 242                                                                                                 unresolved_method *ref,
 243                                                                                                 methodinfo *refmethod,
 244                                                                                                 instruction *iptr);
 245
 246 bool resolve_constrain_unresolved_method_params_stackbased(
 247                 unresolved_method *ref,
 248                 methodinfo *refmethod,
 249                 typedescriptor_t *stack);
 250
 251 #endif /* defined(ENABLE_VERIFIER) */
 252
 253 #ifndef NDEBUG
 254 void unresolved_class_debug_dump(unresolved_class *ref,FILE *file);
 255 void unresolved_field_debug_dump(unresolved_field *ref,FILE *file);
 256 void unresolved_method_debug_dump(unresolved_method *ref,FILE *file);
 257 void unresolved_subtype_set_debug_dump(unresolved_subtype_set *stset,FILE *file);
 258 #endif
 259
 260 #endif /* _RESOLVE_H */
 261
 262 /*
 263  * These are local overrides for various environment variables in Emacs.
 264  * Please do not remove this and leave it at the end of the file, where
 265  * Emacs will automagically detect them.
 266  * ---------------------------------------------------------------------
 267  * Local variables:
 268  * mode: c
 269  * indent-tabs-mode: t
 270  * c-basic-offset: 4
 271  * tab-width: 4
 272  * End:
 273  * vim:noexpandtab:sw=4:ts=4:
 274  */
 275