/* Copyright 2017 R. Thomas
 * Copyright 2017 Quarkslab
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef LIEF_DEX_INSTRUCTIONS_H_
#define LIEF_DEX_INSTRUCTIONS_H_
#include "LIEF/visibility.h"
#include "LIEF/types.h"
#include <cstddef>

namespace LIEF {
namespace DEX {

enum SWITCH_ARRAY_IDENT : uint16_t {
  IDENT_PACKED_SWITCH = 0x0100,
  IDENT_SPARSE_SWITCH = 0x0200,
  IDENT_FILL_ARRAY    = 0x0300,
};

enum OPCODES : uint8_t {
  OP_NOP                    = 0x00,
  OP_MOVE                   = 0x01,
  OP_MOVE_FROM_16           = 0x02,
  OP_MOVE_16                = 0x03,
  OP_MOVE_WIDE              = 0x04,
  OP_MOVE_WIDE_FROM_16      = 0x05,
  OP_MOVE_WIDE_16           = 0x06,
  OP_MOVE_OBJECT            = 0x07,
  OP_MOVE_OBJECT_FROM_16    = 0x08,
  OP_MOVE_OBJECT_16         = 0x09,
  OP_MOVE_RESULT            = 0x0a,
  OP_MOVE_RESULT_WIDE       = 0x0b,
  OP_MOVE_RESULT_OBJECT     = 0x0c,
  OP_MOVE_EXCEPTION         = 0x0d,
  OP_RETURN_VOID            = 0x0e,
  OP_RETURN                 = 0x0f,
  OP_RETURN_WIDE            = 0x10,
  OP_RETURN_OBJECT          = 0x11,
  OP_CONST_4                = 0x12,
  OP_CONST_16               = 0x13,
  OP_CONST                  = 0x14,
  OP_CONST_HIGH_16          = 0x15,
  OP_CONST_WIDE_16          = 0x16,
  OP_CONST_WIDE_32          = 0x17,
  OP_CONST_WIDE             = 0x18,
  OP_CONST_WIDE_HIGH_16     = 0x19,
  OP_CONST_STRING           = 0x1a,
  OP_CONST_STRING_JUMBO     = 0x1b,
  OP_CONST_CLASS            = 0x1c,
  OP_MONITOR_ENTER          = 0x1d,
  OP_MONITOR_EXIT           = 0x1e,
  OP_CHECK_CAST             = 0x1f,
  OP_INSTANCE_OF            = 0x20,
  OP_ARRAY_LENGTH           = 0x21,
  OP_NEW_INSTANCE           = 0x22,
  OP_NEW_ARRAY              = 0x23,
  OP_FILLED_NEW_ARRAY       = 0x24,
  OP_FILLED_NEW_ARRAY_RANGE = 0x25,
  OP_FILL_ARRAY_DATA        = 0x26,
  OP_THROW                  = 0x27,
  OP_GOTO                   = 0x28,
  OP_GOTO_16                = 0x29,
  OP_GOTO_32                = 0x2a,
  OP_PACKED_SWITCH          = 0x2b,
  OP_SPARSE_SWITCH          = 0x2c,
  OP_CMPL_FLOAT             = 0x2d,
  OP_CMPG_FLOAT             = 0x2e,
  OP_CMPL_DOUBLE            = 0x2f,
  OP_CMPG_DOUBLE            = 0x30,
  OP_CMP_LONG               = 0x31,
  OP_IF_EQ                  = 0x32,
  OP_IF_NE                  = 0x33,
  OP_IF_LT                  = 0x34,
  OP_IF_GE                  = 0x35,
  OP_IF_GT                  = 0x36,
  OP_IF_LE                  = 0x37,
  OP_IF_EQZ                 = 0x38,
  OP_IF_NEZ                 = 0x39,
  OP_IF_LTZ                 = 0x3a,
  OP_IF_GEZ                 = 0x3b,
  OP_IF_GTZ                 = 0x3c,
  OP_IF_LEZ                 = 0x3d,
  OP_AGET                   = 0x44,
  OP_AGET_WIDE              = 0x45,
  OP_AGET_OBJECT            = 0x46,
  OP_AGET_BOOLEAN           = 0x47,
  OP_AGET_BYTE              = 0x48,
  OP_AGET_CHAR              = 0x49,
  OP_AGET_SHORT             = 0x4a,
  OP_APUT                   = 0x4b,
  OP_APUT_WIDE              = 0x4c,
  OP_APUT_OBJECT            = 0x4d,
  OP_APUT_BOOLEAN           = 0x4e,
  OP_APUT_BYTE              = 0x4f,
  OP_APUT_CHAR              = 0x50,
  OP_APUT_SHORT             = 0x51,
  OP_IGET                   = 0x52,
  OP_IGET_WIDE              = 0x53,
  OP_IGET_OBJECT            = 0x54,
  OP_IGET_BOOLEAN           = 0x55,
  OP_IGET_BYTE              = 0x56,
  OP_IGET_CHAR              = 0x57,
  OP_IGET_SHORT             = 0x58,
  OP_IPUT                   = 0x59,
  OP_IPUT_WIDE              = 0x5a,
  OP_IPUT_OBJECT            = 0x5b,
  OP_IPUT_BOOLEAN           = 0x5c,
  OP_IPUT_BYTE              = 0x5d,
  OP_IPUT_CHAR              = 0x5e,
  OP_IPUT_SHORT             = 0x5f,
  OP_SGET                   = 0x60,
  OP_SGET_WIDE              = 0x61,
  OP_SGET_OBJECT            = 0x62,
  OP_SGET_BOOLEAN           = 0x63,
  OP_SGET_BYTE              = 0x64,
  OP_SGET_CHAR              = 0x65,
  OP_SGET_SHORT             = 0x66,
  OP_SPUT                   = 0x67,
  OP_SPUT_WIDE              = 0x68,
  OP_SPUT_OBJECT            = 0x69,
  OP_SPUT_BOOLEAN           = 0x6a,
  OP_SPUT_BYTE              = 0x6b,
  OP_SPUT_CHAR              = 0x6c,
  OP_SPUT_SHORT             = 0x6d,
  OP_INVOKE_VIRTUAL         = 0x6e,
  OP_INVOKE_SUPER           = 0x6f,
  OP_INVOKE_DIRECT          = 0x70,
  OP_INVOKE_STATIC          = 0x71,
  OP_INVOKE_INTERFACE       = 0x72,
  OP_RETURN_VOID_NO_BARRIER = 0x73,
  OP_INVOKE_VIRTUAL_RANGE   = 0x74,
  OP_INVOKE_SUPER_RANGE     = 0x75,
  OP_INVOKE_DIRECT_RANGE    = 0x76,
  OP_INVOKE_STATIC_RANGE    = 0x77,
  OP_INVOKE_INTERFACE_RANGE = 0x78,
  OP_NEG_INT                = 0x7b,
  OP_NOT_INT                = 0x7c,
  OP_NEG_LONG               = 0x7d,
  OP_NOT_LONG               = 0x7e,
  OP_NEG_FLOAT              = 0x7f,
  OP_NEG_DOUBLE             = 0x80,
  OP_INT_TO_LONG            = 0x81,
  OP_INT_TO_FLOAT           = 0x82,
  OP_INT_TO_DOUBLE          = 0x83,
  OP_LONG_TO_INT            = 0x84,
  OP_LONG_TO_FLOAT          = 0x85,
  OP_LONG_TO_DOUBLE         = 0x86,
  OP_FLOAT_TO_INT           = 0x87,
  OP_FLOAT_TO_LONG          = 0x88,
  OP_FLOAT_TO_DOUBLE        = 0x89,
  OP_DOUBLE_TO_INT          = 0x8a,
  OP_DOUBLE_TO_LONG         = 0x8b,
  OP_DOUBLE_TO_FLOAT        = 0x8c,
  OP_INT_TO_BYTE            = 0x8d,
  OP_INT_TO_CHAR            = 0x8e,
  OP_INT_TO_SHORT           = 0x8f,
  OP_ADD_INT                = 0x90,
  OP_SUB_INT                = 0x91,
  OP_MUL_INT                = 0x92,
  OP_DIV_INT                = 0x93,
  OP_REM_INT                = 0x94,
  OP_AND_INT                = 0x95,
  OP_OR_INT                 = 0x96,
  OP_XOR_INT                = 0x97,
  OP_SHL_INT                = 0x98,
  OP_SHR_INT                = 0x99,
  OP_USHR_INT               = 0x9a,
  OP_ADD_LONG               = 0x9b,
  OP_SUB_LONG               = 0x9c,
  OP_MUL_LONG               = 0x9d,
  OP_DIV_LONG               = 0x9e,
  OP_REM_LONG               = 0x9f,
  OP_AND_LONG               = 0xa0,
  OP_OR_LONG                = 0xa1,
  OP_XOR_LONG               = 0xa2,
  OP_SHL_LONG               = 0xa3,
  OP_SHR_LONG               = 0xa4,
  OP_USHR_LONG              = 0xa5,
  OP_ADD_FLOAT              = 0xa6,
  OP_SUB_FLOAT              = 0xa7,
  OP_MUL_FLOAT              = 0xa8,
  OP_DIV_FLOAT              = 0xa9,
  OP_REM_FLOAT              = 0xaa,
  OP_ADD_DOUBLE             = 0xab,
  OP_SUB_DOUBLE             = 0xac,
  OP_MUL_DOUBLE             = 0xad,
  OP_DIV_DOUBLE             = 0xae,
  OP_REM_DOUBLE             = 0xaf,
  OP_ADD_INT_2_ADDR         = 0xb0,
  OP_SUB_INT_2_ADDR         = 0xb1,
  OP_MUL_INT_2_ADDR         = 0xb2,
  OP_DIV_INT_2_ADDR         = 0xb3,
  OP_REM_INT_2_ADDR         = 0xb4,
  OP_AND_INT_2_ADDR         = 0xb5,
  OP_OR_INT_2_ADDR          = 0xb6,
  OP_XOR_INT_2_ADDR         = 0xb7,
  OP_SHL_INT_2_ADDR         = 0xb8,
  OP_SHR_INT_2_ADDR         = 0xb9,
  OP_USHR_INT_2_ADDR        = 0xba,
  OP_ADD_LONG_2_ADDR        = 0xbb,
  OP_SUB_LONG_2_ADDR        = 0xbc,
  OP_MUL_LONG_2_ADDR        = 0xbd,
  OP_DIV_LONG_2_ADDR        = 0xbe,
  OP_REM_LONG_2_ADDR        = 0xbf,
  OP_AND_LONG_2_ADDR        = 0xc0,
  OP_OR_LONG_2_ADDR         = 0xc1,
  OP_XOR_LONG_2_ADDR        = 0xc2,
  OP_SHL_LONG_2_ADDR        = 0xc3,
  OP_SHR_LONG_2_ADDR        = 0xc4,
  OP_USHR_LONG_2_ADDR       = 0xc5,
  OP_ADD_FLOAT_2_ADDR       = 0xc6,
  OP_SUB_FLOAT_2_ADDR       = 0xc7,
  OP_MUL_FLOAT_2_ADDR       = 0xc8,
  OP_DIV_FLOAT_2_ADDR       = 0xc9,
  OP_REM_FLOAT_2_ADDR       = 0xca,
  OP_ADD_DOUBLE_2_ADDR      = 0xcb,
  OP_SUB_DOUBLE_2_ADDR      = 0xcc,
  OP_MUL_DOUBLE_2_ADDR      = 0xcd,
  OP_DIV_DOUBLE_2_ADDR      = 0xce,
  OP_REM_DOUBLE_2_ADDR      = 0xcf,
  OP_ADD_INT_LIT_16         = 0xd0,
  OP_RSUB_INT               = 0xd1,
  OP_MUL_INT_LIT_16         = 0xd2,
  OP_DIV_INT_LIT_16         = 0xd3,
  OP_REM_INT_LIT_16         = 0xd4,
  OP_AND_INT_LIT_16         = 0xd5,
  OP_OR_INT_LIT_16          = 0xd6,
  OP_XOR_INT_LIT_16         = 0xd7,
  OP_ADD_INT_LIT_8          = 0xd8,
  OP_RSUB_INT_LIT_8         = 0xd9,
  OP_MUL_INT_LIT_8          = 0xda,
  OP_DIV_INT_LIT_8          = 0xdb,
  OP_REM_INT_LIT_8          = 0xdc,
  OP_AND_INT_LIT_8          = 0xdd,
  OP_OR_INT_LIT_8           = 0xde,
  OP_XOR_INT_LIT_8          = 0xdf,
  OP_SHL_INT_LIT_8          = 0xe0,
  OP_SHR_INT_LIT_8          = 0xe1,
  OP_USHR_INT_LIT_8         = 0xe2,

  // ODEX
  OP_IGET_QUICK                  = 0xe3,
  OP_IGET_WIDE_QUICK             = 0xe4,
  OP_IGET_OBJECT_QUICK           = 0xe5,
  OP_IPUT_QUICK                  = 0xe6,
  OP_IPUT_WIDE_QUICK             = 0xe7,
  OP_IPUT_OBJECT_QUICK           = 0xe8,
  OP_INVOKE_VIRTUAL_QUICK        = 0xe9,
  OP_INVOKE_VIRTUAL_RANGE_QUICK  = 0xea,
  OP_IPUT_BOOLEAN_QUICK          = 0xeb,
  OP_IPUT_BYTE_QUICK             = 0xec,
  OP_IPUT_CHAR_QUICK             = 0xed,
  OP_IPUT_SHORT_QUICK            = 0xee,
  OP_IGET_BOOLEAN_QUICK          = 0xef,
  OP_IGET_BYTE_QUICK             = 0xf0,
  OP_IGET_CHAR_QUICK             = 0xf1,
  OP_IGET_SHORT_QUICK            = 0xf2,

  // From DEX 38
  OP_INVOKE_POLYMORPHIC       = 0xfa,
  OP_INVOKE_POLYMORPHIC_RANGE = 0xfb,
  OP_INVOKE_CUSTOM            = 0xfc,
  OP_INVOKE_CUSTOM_RANGE      = 0xfd,

  // From DEX 39
  OP_CONST_METHOD_HANDLE      = 0xfe,
  OP_CONST_METHOD_TYPE        = 0xff,
};

enum INST_FORMATS : uint8_t {
  F_00x = 0,
  F_10x,
  F_12x,
  F_11n,
  F_11x,
  F_10t,
  F_20t,
  F_20bc,
  F_22x,
  F_21t,
  F_21s,
  F_21h,
  F_21c,
  F_23x,
  F_22b,
  F_22t,
  F_22s,
  F_22c,
  F_22cs,
  F_30t,
  F_32x,
  F_31i,
  F_31t,
  F_31c,
  F_35c,
  F_35ms,
  F_35mi,
  F_3rc,
  F_3rms,
  F_3rmi,
  F_51l,

  // Since DEX 38
  F_45cc,
  F_4rcc,
};

struct packed_switch {
  uint16_t ident; // 0x0100
  uint16_t size;
  uint32_t first_key;
  // uint32_t targets[size]
};


struct sparse_switch {
  uint16_t ident; // 0x0200
  uint16_t size;
  // uint32_t targets[size]
};

struct fill_array_data {
  uint16_t ident;
  uint16_t element_width;
  uint32_t size;
  //uint8_t data[size];
};


//! @brief Return the INST_FORMATS format from the opcode
LIEF_API INST_FORMATS inst_format_from_opcode(OPCODES op);

LIEF_API size_t inst_size_from_format(INST_FORMATS fmt);
LIEF_API size_t inst_size_from_opcode(OPCODES op);

LIEF_API bool is_switch_array(const uint8_t* ptr, const uint8_t* end);

LIEF_API size_t switch_array_size(const uint8_t* ptr, const uint8_t* end);

} // Namespace LIEF
} // Namespace DEX

#endif

