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/* libjclass - Library for reading java class files
* Copyright (C) 2003 Nicos Panayides
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Id: bytecode.h,v 1.16 2003/10/23 12:41:19 anarxia Exp $
*/
#ifndef __JCLASS_BYTECODE_H__
#define __JCLASS_BYTECODE_H__
#ifdef _cplusplus
extern "C" {
#endif
#include <jclass/types.h>
#define OP_LENGTH_UNPREDICTABLE 0x10
typedef enum {
OP_TYPE_NONE,
OP_TYPE_BYTE,
OP_TYPE_UNSIGNED_BYTE,
OP_TYPE_BYTE_ARRAY_TYPE,
OP_TYPE_BYTE_CONSTANT_INDEX,
OP_TYPE_UNSIGNED_BYTE_USELESS,
OP_TYPE_SHORT,
OP_TYPE_UNSIGNED_SHORT,
OP_TYPE_SHORT_OFFSET,
OP_TYPE_SHORT_CLASS_INDEX,
OP_TYPE_SHORT_METHOD_INDEX,
OP_TYPE_SHORT_FIELD_INDEX,
OP_TYPE_SHORT_CONSTANT_INDEX,
OP_TYPE_INT,
OP_TYPE_INT_OFFSET,
OP_TYPE_INSTRUCTION,
OP_TYPE_TABLESWITCH,
OP_TYPE_LOOKUPSWITCH,
OP_TYPE_ERROR
} OperandType;
typedef enum {
ARRAY_TYPE_BOOLEAN = 4,
ARRAY_TYPE_CHAR,
ARRAY_TYPE_FLOAT,
ARRAY_TYPE_DOUBLE,
ARRAY_TYPE_BYTE,
ARRAY_TYPE_SHORT,
ARRAY_TYPE_INT,
ARRAY_TYPE_LONG
} ArrayType;
typedef struct {
int32_t num_pairs;
uint32_t default_target;
int32_t low_value;
uint32_t* target;
} TableSwitchOperand;
typedef struct {
int32_t num_pairs;
uint32_t default_target;
uint32_t* value;
uint32_t* target;
} LookupSwitchOperand;
#define MAX_LEGAL_OPCODE 201
const char* jclass_code_instruction_name(uint8_t opcode);
uint8_t jclass_code_instruction_ops(uint8_t opcode);
uint8_t jclass_code_instruction_ops_length(uint8_t opcode);
OperandType jclass_code_instruction_op_type(uint8_t opcode,
int operand_number,
int is_wide);
int8_t jclass_code_read_byte(uint8_t* code, uint32_t* pc);
uint8_t jclass_code_read_ubyte(uint8_t* code, uint32_t* pc);
int16_t jclass_code_read_short(uint8_t* code, uint32_t* pc);
uint16_t jclass_code_read_ushort(uint8_t* code, uint32_t* pc);
int32_t jclass_code_read_int(uint8_t* code, uint32_t* pc);
TableSwitchOperand* jclass_code_read_tableswitch(uint8_t* code, uint32_t* pc);
LookupSwitchOperand* jclass_code_read_lookupswitch(uint8_t* code, uint32_t* pc);
void jclass_code_lookupswitch_operand_free(LookupSwitchOperand* operand);
void jclass_code_tableswitch_operand_free(TableSwitchOperand* operand);
#define JCLASS_CODE_ALIGN_PC(pc) (((pc) % 4) ? (((pc) + 4) - ((pc) % 4)) : (pc))
const char* jclass_code_array_name(uint8_t array_number);
#ifdef _cplusplus
}
#endif
#endif
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