1 /***************************************************************************
2 * Copyright (C) 2006 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
20 #ifndef ARM_DISASSEMBLER_H
21 #define ARM_DISASSEMBLER_H
25 enum arm_instruction_type
27 ARM_UNKNOWN_INSTUCTION,
29 /* Branch instructions */
35 /* Data processing instructions */
53 /* Load/store instructions */
74 /* Status register access instructions */
78 /* Multiply instructions */
86 /* Miscellaneous instructions */
89 /* Exception generating instructions */
93 /* Coprocessor instructions */
100 /* Semaphore instructions */
104 /* Enhanced DSP extensions */
120 ARM_UNDEFINED_INSTRUCTION = 0xffffffff,
123 typedef struct arm_b_bl_bx_blx_instr_s
127 } arm_b_bl_bx_blx_instr_t;
129 union arm_shifter_operand
136 u8 shift; /* 0: LSL, 1: LSR, 2: ASR, 3: ROR, 4: RRX */
146 typedef struct arm_data_proc_instr_s
148 int variant; /* 0: immediate, 1: immediate_shift, 2: register_shift */
152 union arm_shifter_operand shifter_operand;
153 } arm_data_proc_instr_t;
155 typedef struct arm_load_store_instr_s
160 int index_mode; /* 0: offset, 1: pre-indexed, 2: post-indexed */
161 int offset_mode; /* 0: immediate, 1: (scaled) register */
167 u8 shift; /* 0: LSL, 1: LSR, 2: ASR, 3: ROR, 4: RRX */
171 } arm_load_store_instr_t;
173 typedef struct arm_load_store_multiple_instr_s
177 u8 addressing_mode; /* 0: IA, 1: IB, 2: DA, 3: DB */
180 } arm_load_store_multiple_instr_t;
182 typedef struct arm_instruction_s
184 enum arm_instruction_type type;
189 arm_b_bl_bx_blx_instr_t b_bl_bx_blx;
190 arm_data_proc_instr_t data_proc;
191 arm_load_store_instr_t load_store;
192 arm_load_store_multiple_instr_t load_store_multiple;
197 extern int arm_evaluate_opcode(u32 opcode, u32 address, arm_instruction_t *instruction);
198 extern int thumb_evaluate_opcode(u16 opcode, u32 address, arm_instruction_t *instruction);
199 extern int arm_access_size(arm_instruction_t *instruction);
201 #define COND(opcode) (arm_condition_strings[(opcode & 0xf0000000)>>28])
203 #endif /* ARM_DISASSEMBLER_H */