gcc/java/verify.h

   1 /* Declarations to interface gcj with bytecode verifier.
   2    Copyright (C) 2003-2013 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.
  19
  20 Java and all Java-based marks are trademarks or registered trademarks
  21 of Sun Microsystems, Inc. in the United States and other countries.
  22 The Free Software Foundation is independent of Sun Microsystems, Inc.  */
  23
  24 /* Written by Tom Tromey <tromey@redhat.com>.  */
  25
  26 #ifndef GCC_VERIFY_H
  27 #define GCC_VERIFY_H
  28
  29 #include "jcf.h"
  30 #include "tree.h"
  31 #include "java-tree.h"
  32
  33 typedef JCF vfy_constants;
  34
  35 /* For our purposes a string is the same as an identifier.  */
  36 typedef tree vfy_string;
  37
  38 /* The TYPE_DECL for a class or primitive type.  */
  39 typedef tree vfy_jclass;
  40
  41 /* An unsigned jshort.  */
  42 typedef uint16 vfy_uint_16;
  43
  44 typedef struct
  45 {
  46   int handler, start, end, type;
  47 } vfy_exception;
  48
  49 typedef struct
  50 {
  51   tree method;
  52   vfy_string signature;
  53   vfy_string name;
  54   const unsigned char *bytes;
  55   vfy_exception *exceptions;
  56
  57   /* These fields are referred to directly by the verifier.  */
  58   vfy_jclass defining_class;
  59   int max_stack;
  60   int max_locals;
  61   int code_length;
  62   int exc_count;
  63 } vfy_method;
  64
  65 /* Entry point to the verifier.  */
  66 int verify_jvm_instructions_new (JCF *jcf, const unsigned char *byte_ops,
  67                                  long length);
  68
  69 void *vfy_alloc (size_t bytes);
  70 void vfy_free (void *mem);
  71 bool vfy_strings_equal (vfy_string one, vfy_string two);
  72 const char *vfy_string_bytes (vfy_string str);
  73 int vfy_string_length (vfy_string str);
  74 vfy_string vfy_get_string (const char *chars, int length);
  75 vfy_string vfy_init_name (void);
  76 vfy_string vfy_clinit_name (void);
  77 int vfy_count_arguments (vfy_string signature);
  78 vfy_string vfy_get_signature (vfy_method *method);
  79 vfy_string vfy_get_method_name (vfy_method *method);
  80 bool vfy_is_static (vfy_method *method);
  81 const unsigned char *vfy_get_bytecode (vfy_method *method);
  82 vfy_exception *vfy_get_exceptions (vfy_method *method);
  83 void vfy_get_exception (vfy_exception *, int index, int *handler,
  84                         int *start, int *end, int *handler_type);
  85 int vfy_tag (vfy_constants *pool, int index);
  86 void vfy_load_indexes (vfy_constants *pool, int index,
  87                        vfy_uint_16 *index0, vfy_uint_16 *index1);
  88 vfy_constants *vfy_get_constants (vfy_jclass klass);
  89 int vfy_get_constants_size (vfy_jclass klass);
  90 vfy_string vfy_get_pool_string (vfy_constants *pool, int index);
  91 vfy_jclass vfy_get_pool_class (vfy_constants *pool, int index);
  92 vfy_string vfy_get_class_name (vfy_jclass klass);
  93 bool vfy_is_assignable_from (vfy_jclass target, vfy_jclass source);
  94 char vfy_get_primitive_char (vfy_jclass klass);
  95 int vfy_get_interface_count (vfy_jclass klass);
  96 vfy_jclass vfy_get_interface (vfy_jclass klass, int index);
  97 bool vfy_is_array (vfy_jclass klass);
  98 bool vfy_is_interface (vfy_jclass klass);
  99 bool vfy_is_primitive (vfy_jclass klass);
 100 vfy_jclass vfy_get_superclass (vfy_jclass klass);
 101 vfy_jclass vfy_get_array_class (vfy_jclass klass);
 102 vfy_jclass vfy_get_component_type (vfy_jclass klass);
 103 bool vfy_is_abstract (vfy_jclass klass);
 104 vfy_jclass vfy_find_class (vfy_jclass klass, vfy_string name);
 105 vfy_jclass vfy_object_type (void);
 106 vfy_jclass vfy_class_type (void);
 107 vfy_jclass vfy_string_type (void);
 108 vfy_jclass vfy_throwable_type (void);
 109 vfy_jclass vfy_unsuitable_type (void);
 110 vfy_jclass vfy_return_address_type (void);
 111 vfy_jclass vfy_null_type (void);
 112 int vfy_fail (const char *message, int pc, vfy_jclass ignore1,
 113               vfy_method *method);
 114 vfy_jclass vfy_get_primitive_type (int type);
 115 void vfy_note_stack_depth (vfy_method *method, int pc, int depth);
 116 void vfy_note_stack_type (vfy_method *method, int pc, int slot,
 117                           vfy_jclass type);
 118 void vfy_note_local_type (vfy_method *method, int pc, int slot,
 119                           vfy_jclass type);
 120 void vfy_note_instruction_seen (int pc);
 121 bool vfy_class_has_field (vfy_jclass klass, vfy_string name,
 122                           vfy_string signature);
 123
 124 #define GLOM(name, stuff) name ## stuff
 125 #define VFY_PRIMITIVE_CLASS(name) \
 126   vfy_get_primitive_type ((int) (GLOM (name, _type)))
 127
 128 typedef enum
 129 {
 130 #define JAVAOP(name, num, ignore1, ignore2, ignore3) \
 131   GLOM (op_, name) = num,
 132 #include "javaop.def"
 133   java_opcode_end
 134 } java_opcode;
 135
 136
 137 #define JV_CONSTANT_Class CONSTANT_Class
 138 #define JV_CONSTANT_ResolvedClass CONSTANT_ResolvedClass
 139 #define JV_CONSTANT_String CONSTANT_String
 140 #define JV_CONSTANT_ResolvedString CONSTANT_ResolvedString
 141 #define JV_CONSTANT_Integer CONSTANT_Integer
 142 #define JV_CONSTANT_Float CONSTANT_Float
 143 #define JV_CONSTANT_Long CONSTANT_Long
 144 #define JV_CONSTANT_Double CONSTANT_Double
 145 #define JV_CONSTANT_Fieldref CONSTANT_Fieldref
 146 #define JV_CONSTANT_InterfaceMethodref CONSTANT_InterfaceMethodref
 147 #define JV_CONSTANT_Methodref CONSTANT_Methodref
 148
 149 int verify_method (vfy_method *meth);
 150
 151 #endif /* ! GCC_VERIFY_H */