gcc/java/verify.h

   1 /* Declarations to interface gcj with bytecode verifier.
   2    Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.
  20
  21 Java and all Java-based marks are trademarks or registered trademarks
  22 of Sun Microsystems, Inc. in the United States and other countries.
  23 The Free Software Foundation is independent of Sun Microsystems, Inc.  */
  24
  25 /* Written by Tom Tromey <tromey@redhat.com>.  */
  26
  27 #ifndef GCC_VERIFY_H
  28 #define GCC_VERIFY_H
  29
  30 #include "system.h"
  31 #include "coretypes.h"
  32 #include "jcf.h"
  33 #include "tree.h"
  34 #include "java-tree.h"
  35
  36 typedef JCF vfy_constants;
  37
  38 /* For our purposes a string is the same as an identifier.  */
  39 typedef tree vfy_string;
  40
  41 /* The TYPE_DECL for a class or primitive type.  */
  42 typedef tree vfy_jclass;
  43
  44 /* An unsigned jshort.  */
  45 typedef uint16 vfy_uint_16;
  46
  47 typedef struct
  48 {
  49   int handler, start, end, type;
  50 } vfy_exception;
  51
  52 typedef struct
  53 {
  54   tree method;
  55   vfy_string signature;
  56   vfy_string name;
  57   const unsigned char *bytes;
  58   vfy_exception *exceptions;
  59
  60   /* These fields are referred to directly by the verifier.  */
  61   vfy_jclass defining_class;
  62   int max_stack;
  63   int max_locals;
  64   int code_length;
  65   int exc_count;
  66 } vfy_method;
  67
  68 /* Entry point to the verifier.  */
  69 int verify_jvm_instructions_new (JCF *jcf, const unsigned char *byte_ops,
  70                                  long length);
  71
  72 void *vfy_alloc (size_t bytes);
  73 void vfy_free (void *mem);
  74 bool vfy_strings_equal (vfy_string one, vfy_string two);
  75 const char *vfy_string_bytes (vfy_string str);
  76 int vfy_string_length (vfy_string str);
  77 vfy_string vfy_get_string (const char *chars, int length);
  78 vfy_string vfy_init_name (void);
  79 vfy_string vfy_clinit_name (void);
  80 int vfy_count_arguments (vfy_string signature);
  81 vfy_string vfy_get_signature (vfy_method *method);
  82 vfy_string vfy_get_method_name (vfy_method *method);
  83 bool vfy_is_static (vfy_method *method);
  84 const unsigned char *vfy_get_bytecode (vfy_method *method);
  85 vfy_exception *vfy_get_exceptions (vfy_method *method);
  86 void vfy_get_exception (vfy_exception *, int index, int *handler,
  87                         int *start, int *end, int *handler_type);
  88 int vfy_tag (vfy_constants *pool, int index);
  89 void vfy_load_indexes (vfy_constants *pool, int index,
  90                        vfy_uint_16 *index0, vfy_uint_16 *index1);
  91 vfy_constants *vfy_get_constants (vfy_jclass klass);
  92 int vfy_get_constants_size (vfy_jclass klass);
  93 vfy_string vfy_get_pool_string (vfy_constants *pool, int index);
  94 vfy_jclass vfy_get_pool_class (vfy_constants *pool, int index);
  95 vfy_string vfy_get_class_name (vfy_jclass klass);
  96 bool vfy_is_assignable_from (vfy_jclass target, vfy_jclass source);
  97 char vfy_get_primitive_char (vfy_jclass klass);
  98 int vfy_get_interface_count (vfy_jclass klass);
  99 vfy_jclass vfy_get_interface (vfy_jclass klass, int index);
 100 bool vfy_is_array (vfy_jclass klass);
 101 bool vfy_is_interface (vfy_jclass klass);
 102 bool vfy_is_primitive (vfy_jclass klass);
 103 vfy_jclass vfy_get_superclass (vfy_jclass klass);
 104 vfy_jclass vfy_get_array_class (vfy_jclass klass);
 105 vfy_jclass vfy_get_component_type (vfy_jclass klass);
 106 bool vfy_is_abstract (vfy_jclass klass);
 107 vfy_jclass vfy_find_class (vfy_jclass klass, vfy_string name);
 108 vfy_jclass vfy_object_type (void);
 109 vfy_jclass vfy_class_type (void);
 110 vfy_jclass vfy_string_type (void);
 111 vfy_jclass vfy_throwable_type (void);
 112 vfy_jclass vfy_unsuitable_type (void);
 113 vfy_jclass vfy_return_address_type (void);
 114 vfy_jclass vfy_null_type (void);
 115 int vfy_fail (const char *message, int pc, vfy_jclass ignore1,
 116               vfy_method *method);
 117 vfy_jclass vfy_get_primitive_type (int type);
 118 void vfy_note_stack_depth (vfy_method *method, int pc, int depth);
 119 void vfy_note_stack_type (vfy_method *method, int pc, int slot,
 120                           vfy_jclass type);
 121 void vfy_note_local_type (vfy_method *method, int pc, int slot,
 122                           vfy_jclass type);
 123 void vfy_note_instruction_seen (int pc);
 124 bool vfy_class_has_field (vfy_jclass klass, vfy_string name,
 125                           vfy_string signature);
 126
 127 #define GLOM(name, stuff) name ## stuff
 128 #define VFY_PRIMITIVE_CLASS(name) \
 129   vfy_get_primitive_type ((int) (GLOM (name, _type)))
 130
 131 typedef enum
 132 {
 133 #define JAVAOP(name, num, ignore1, ignore2, ignore3) \
 134   GLOM (op_, name) = num,
 135 #include "javaop.def"
 136   java_opcode_end
 137 } java_opcode;
 138
 139
 140 #define JV_CONSTANT_Class CONSTANT_Class
 141 #define JV_CONSTANT_ResolvedClass CONSTANT_ResolvedClass
 142 #define JV_CONSTANT_String CONSTANT_String
 143 #define JV_CONSTANT_ResolvedString CONSTANT_ResolvedString
 144 #define JV_CONSTANT_Integer CONSTANT_Integer
 145 #define JV_CONSTANT_Float CONSTANT_Float
 146 #define JV_CONSTANT_Long CONSTANT_Long
 147 #define JV_CONSTANT_Double CONSTANT_Double
 148 #define JV_CONSTANT_Fieldref CONSTANT_Fieldref
 149 #define JV_CONSTANT_InterfaceMethodref CONSTANT_InterfaceMethodref
 150 #define JV_CONSTANT_Methodref CONSTANT_Methodref
 151
 152 int verify_method (vfy_method *meth);
 153
 154 #endif /* ! GCC_VERIFY_H */