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/***************************************************************************
* Copyright (C) 2006 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* 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. *
***************************************************************************/
#ifndef ARM_DISASSEMBLER_H
#define ARM_DISASSEMBLER_H
#include "types.h"
enum arm_instruction_type
{
ARM_UNKNOWN_INSTUCTION,
/* Branch instructions */
ARM_B,
ARM_BL,
ARM_BX,
ARM_BLX,
/* Data processing instructions */
ARM_AND,
ARM_EOR,
ARM_SUB,
ARM_RSB,
ARM_ADD,
ARM_ADC,
ARM_SBC,
ARM_RSC,
ARM_TST,
ARM_TEQ,
ARM_CMP,
ARM_CMN,
ARM_ORR,
ARM_MOV,
ARM_BIC,
ARM_MVN,
/* Load/store instructions */
ARM_LDR,
ARM_LDRB,
ARM_LDRT,
ARM_LDRBT,
ARM_LDRH,
ARM_LDRSB,
ARM_LDRSH,
ARM_LDM,
ARM_STR,
ARM_STRB,
ARM_STRT,
ARM_STRBT,
ARM_STRH,
ARM_STM,
/* Status register access instructions */
ARM_MRS,
ARM_MSR,
/* Multiply instructions */
ARM_MUL,
ARM_MLA,
ARM_SMULL,
ARM_SMLAL,
ARM_UMULL,
ARM_UMLAL,
/* Miscellaneous instructions */
ARM_CLZ,
/* Exception generating instructions */
ARM_BKPT,
ARM_SWI,
/* Coprocessor instructions */
ARM_CDP,
ARM_LDC,
ARM_STC,
ARM_MCR,
ARM_MRC,
/* Semaphore instructions */
ARM_SWP,
ARM_SWPB,
/* Enhanced DSP extensions */
ARM_MCRR,
ARM_MRRC,
ARM_PLD,
ARM_QADD,
ARM_QDADD,
ARM_QSUB,
ARM_QDSUB,
ARM_SMLAxy,
ARM_SMLALxy,
ARM_SMLAWy,
ARM_SMULxy,
ARM_SMULWy,
ARM_LDRD,
ARM_STRD,
ARM_UNDEFINED_INSTRUCTION = 0xffffffff,
};
typedef struct arm_b_bl_bx_blx_instr_s
{
int reg_operand;
u32 target_address;
} arm_b_bl_bx_blx_instr_t;
union arm_shifter_operand
{
struct {
u32 immediate;
} immediate;
struct {
u8 Rm;
u8 shift; /* 0: LSL, 1: LSR, 2: ASR, 3: ROR, 4: RRX */
u8 shift_imm;
} immediate_shift;
struct {
u8 Rm;
u8 shift;
u8 Rs;
} register_shift;
};
typedef struct arm_data_proc_instr_s
{
int variant; /* 0: immediate, 1: immediate_shift, 2: register_shift */
u8 S;
u8 Rn;
u8 Rd;
union arm_shifter_operand shifter_operand;
} arm_data_proc_instr_t;
typedef struct arm_load_store_instr_s
{
u8 Rd;
u8 Rn;
u8 U;
int index_mode; /* 0: offset, 1: pre-indexed, 2: post-indexed */
int offset_mode; /* 0: immediate, 1: (scaled) register */
union
{
u32 offset;
struct {
u8 Rm;
u8 shift; /* 0: LSL, 1: LSR, 2: ASR, 3: ROR, 4: RRX */
u8 shift_imm;
} reg;
} offset;
} arm_load_store_instr_t;
typedef struct arm_load_store_multiple_instr_s
{
u8 Rn;
u32 register_list;
u8 addressing_mode; /* 0: IA, 1: IB, 2: DA, 3: DB */
u8 S;
u8 W;
} arm_load_store_multiple_instr_t;
typedef struct arm_instruction_s
{
enum arm_instruction_type type;
char text[128];
u32 opcode;
union {
arm_b_bl_bx_blx_instr_t b_bl_bx_blx;
arm_data_proc_instr_t data_proc;
arm_load_store_instr_t load_store;
arm_load_store_multiple_instr_t load_store_multiple;
} info;
} arm_instruction_t;
extern int arm_evaluate_opcode(u32 opcode, u32 address, arm_instruction_t *instruction);
extern int thumb_evaluate_opcode(u16 opcode, u32 address, arm_instruction_t *instruction);
extern int arm_access_size(arm_instruction_t *instruction);
#define COND(opcode) (arm_condition_strings[(opcode & 0xf0000000)>>28])
#endif /* ARM_DISASSEMBLER_H */
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