src/vm/stackmap.h

   1 /* src/vm/stackmap.h - class attribute StackMapTable
   2
   3    Copyright (C) 2006 R. Grafl, A. Krall, C. Kruegel, C. Oates,
   4    R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
   5    C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
   6    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: Christian Thalinger
  28
  29    $Id: utf8.h 5920 2006-11-05 21:23:09Z twisti $
  30
  31 */
  32
  33
  34 #ifndef _STACKMAP_H
  35 #define _STACKMAP_H
  36
  37 /* forward typedefs ***********************************************************/
  38
  39 typedef struct stack_map_t                       stack_map_t;
  40 typedef union  stack_map_frame_t                 stack_map_frame_t;
  41 typedef struct same_locals_1_stack_item_frame_t  same_locals_1_stack_item_frame_t;
  42 typedef struct same_locals_1_stack_item_frame_extended_t same_locals_1_stack_item_frame_extended_t;
  43 typedef struct chop_frame_t                      chop_frame_t;
  44 typedef struct same_frame_extended_t             same_frame_extended_t;
  45 typedef struct append_frame_t                    append_frame_t;
  46 typedef struct full_frame_t                      full_frame_t;
  47
  48 typedef union  verification_type_info_t          verification_type_info_t;
  49 typedef struct Top_variable_info_t                   Top_variable_info_t;
  50 typedef struct Integer_variable_info_t           Integer_variable_info_t;
  51 typedef struct Float_variable_info_t             Float_variable_info_t;
  52 typedef struct Long_variable_info_t              Long_variable_info_t;
  53 typedef struct Double_variable_info_t            Double_variable_info_t;
  54 typedef struct Null_variable_info_t              Null_variable_info_t;
  55 typedef struct UninitializedThis_variable_info_t UninitializedThis_variable_info_t;
  56 typedef struct Object_variable_info_t            Object_variable_info_t;
  57 typedef struct Uninitialized_variable_info_t     Uninitialized_variable_info_t;
  58
  59
  60 #include "config.h"
  61 #include "vm/types.h"
  62
  63 #include "vm/global.h"
  64 #include "vm/loader.h"
  65 #include "vm/method.h"
  66
  67
  68 /* verification_type_info *****************************************************/
  69
  70 #define ITEM_Top                  0
  71 #define ITEM_Integer              1
  72 #define ITEM_Float                2
  73 #define ITEM_Double               3
  74 #define ITEM_Long                 4
  75 #define ITEM_Null                 5
  76 #define ITEM_UninitializedThis    6
  77 #define ITEM_Object               7
  78 #define ITEM_Uninitialized        8
  79
  80 struct Top_variable_info_t {
  81         u1 tag;
  82 };
  83
  84 struct Integer_variable_info_t {
  85         u1 tag;
  86 };
  87
  88 struct Float_variable_info_t {
  89         u1 tag;
  90 };
  91
  92 struct Long_variable_info_t {
  93         u1 tag;
  94 };
  95
  96 struct Double_variable_info_t {
  97         u1 tag;
  98 };
  99
 100 struct Null_variable_info_t {
 101         u1 tag;
 102 };
 103
 104 struct UninitializedThis_variable_info_t {
 105         u1 tag;
 106 };
 107
 108 struct Object_variable_info_t {
 109         u1 tag;
 110         u2 cpool_index;
 111 };
 112
 113 struct Uninitialized_variable_info_t {
 114         u1 tag;
 115         u2 offset;
 116 };
 117
 118 union verification_type_info_t {
 119         u1 tag;
 120         Top_variable_info_t                   Top_variable_info;
 121         Integer_variable_info_t           Integer_variable_info;
 122         Float_variable_info_t             Float_variable_info;
 123         Long_variable_info_t              Long_variable_info;
 124         Double_variable_info_t            Double_variable_info;
 125         Null_variable_info_t              Null_variable_info;
 126         UninitializedThis_variable_info_t UninitializedThis_variable_info;
 127         Object_variable_info_t            Object_variable_info;
 128         Uninitialized_variable_info_t     Uninitialized_variable_info;
 129 };
 130
 131
 132 /* stack_map_t ****************************************************************/
 133
 134 struct stack_map_t {
 135         u2                 attribute_name_index;
 136         u4                 attribute_length;
 137         u2                 number_of_entries;
 138         stack_map_frame_t *entries;
 139 };
 140
 141
 142 /* same_locals_1_stack_item_frame_t *******************************************/
 143
 144 struct same_locals_1_stack_item_frame_t {
 145         u1                       frame_type;
 146         verification_type_info_t stack[1];
 147 };
 148
 149
 150 /* same_locals_1_stack_item_frame_extended_t **********************************/
 151
 152 struct same_locals_1_stack_item_frame_extended_t {
 153         u1                       frame_type;
 154         u2                       offset_delta;
 155         verification_type_info_t stack[1];
 156 };
 157
 158
 159 /* chop_frame_t ***************************************************************/
 160
 161 struct chop_frame_t {
 162         u1 frame_type;
 163         u2 offset_delta;
 164 };
 165
 166
 167 /* same_frame_extended_t ******************************************************/
 168
 169 struct same_frame_extended_t {
 170         u1 frame_type;
 171         u2 offset_delta;
 172 };
 173
 174
 175 /* append_frame_t *************************************************************/
 176
 177 struct append_frame_t {
 178         u1                        frame_type;
 179         u2                        offset_delta;
 180         verification_type_info_t *locals;
 181 };
 182
 183
 184 /* full_frame_t ***************************************************************/
 185
 186 struct full_frame_t {
 187         u1                        frame_type;
 188         u2                        offset_delta;
 189         u2                        number_of_locals;
 190         verification_type_info_t *locals;
 191         u2                        number_of_stack_items;
 192         verification_type_info_t *stack;
 193 };
 194
 195
 196 /* stack_map_frame_t **********************************************************/
 197
 198 #define FRAME_TYPE_SAME                                 63   /* 0-63          */
 199 #define FRAME_TYPE_SAME_LOCALS_1_STACK_ITEM             127  /* 0-127         */
 200 #define FRAME_TYPE_RESERVED                             246  /* 128-246       */
 201 #define FRAME_TYPE_SAME_LOCALS_1_STACK_ITEM_EXTENDED    247  /* 247           */
 202 #define FRAME_TYPE_CHOP                                 250  /* 248-250       */
 203 #define FRAME_TYPE_SAME_FRAME_EXTENDED                  251  /* 251           */
 204 #define FRAME_TYPE_APPEND                               254  /* 252-254       */
 205 #define FRAME_TYPE_FULL_FRAME                           255  /* 255           */
 206
 207 union stack_map_frame_t {
 208         u1                                        frame_type;
 209         same_locals_1_stack_item_frame_t          same_locals_1_stack_item_frame;
 210         same_locals_1_stack_item_frame_extended_t same_locals_1_stack_item_frame_extended;
 211         chop_frame_t                              chop_frame;
 212         same_frame_extended_t                     same_frame_extended;
 213         append_frame_t                            append_frame;
 214         full_frame_t                              full_frame;
 215 };
 216
 217
 218 /* function prototypes ********************************************************/
 219
 220 bool stackmap_load_attribute_stackmaptable(classbuffer *cb, methodinfo *m);
 221
 222 #endif /* _STACKMAP_H */
 223
 224
 225 /*
 226  * These are local overrides for various environment variables in Emacs.
 227  * Please do not remove this and leave it at the end of the file, where
 228  * Emacs will automagically detect them.
 229  * ---------------------------------------------------------------------
 230  * Local variables:
 231  * mode: c
 232  * indent-tabs-mode: t
 233  * c-basic-offset: 4
 234  * tab-width: 4
 235  * End:
 236  * vim:noexpandtab:sw=4:ts=4:
 237  */