+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
/***************************************************************************
* 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"
+#ifndef OPENOCD_TARGET_ARM_DISASSEMBLER_H
+#define OPENOCD_TARGET_ARM_DISASSEMBLER_H
+
+enum arm_instruction_type {
+ ARM_UNKNOWN_INSTRUCTION,
-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_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_SMLAL,
ARM_UMULL,
ARM_UMLAL,
-
+
/* Miscellaneous instructions */
ARM_CLZ,
-
+
+ /* Exception return instructions */
+ ARM_ERET,
+
/* Exception generating instructions */
ARM_BKPT,
ARM_SWI,
-
+ ARM_HVC,
+ ARM_SMC,
+
/* 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_DSB,
+ ARM_ISB,
ARM_QADD,
ARM_QDADD,
ARM_QSUB,
ARM_QDSUB,
- ARM_SMLAxy,
- ARM_SMLALxy,
- ARM_SMLAWy,
- ARM_SMULxy,
- ARM_SMULWy,
+ ARM_SMLAXY,
+ ARM_SMLALXY,
+ ARM_SMLAWY,
+ ARM_SMULXY,
+ ARM_SMULWY,
ARM_LDRD,
ARM_STRD,
ARM_UNDEFINED_INSTRUCTION = 0xffffffff,
};
-typedef struct arm_instruction_s
-{
+struct arm_b_bl_bx_blx_instr {
+ int reg_operand;
+ uint32_t target_address;
+};
+
+union arm_shifter_operand {
+ struct {
+ uint32_t immediate;
+ } immediate;
+ struct {
+ uint8_t rm;
+ uint8_t shift; /* 0: LSL, 1: LSR, 2: ASR, 3: ROR, 4: RRX */
+ uint8_t shift_imm;
+ } immediate_shift;
+ struct {
+ uint8_t rm;
+ uint8_t shift;
+ uint8_t rs;
+ } register_shift;
+};
+
+struct arm_data_proc_instr {
+ int variant; /* 0: immediate, 1: immediate_shift, 2: register_shift */
+ uint8_t s;
+ uint8_t rn;
+ uint8_t rd;
+ union arm_shifter_operand shifter_operand;
+};
+
+struct arm_load_store_instr {
+ uint8_t rd;
+ uint8_t rn;
+ uint8_t u;
+ int index_mode; /* 0: offset, 1: pre-indexed, 2: post-indexed */
+ int offset_mode; /* 0: immediate, 1: (scaled) register */
+ union {
+ uint32_t offset;
+ struct {
+ uint8_t rm;
+ uint8_t shift; /* 0: LSL, 1: LSR, 2: ASR, 3: ROR, 4: RRX */
+ uint8_t shift_imm;
+ } reg;
+ } offset;
+};
+
+struct arm_load_store_multiple_instr {
+ uint8_t rn;
+ uint32_t register_list;
+ uint8_t addressing_mode; /* 0: IA, 1: IB, 2: DA, 3: DB */
+ uint8_t s;
+ uint8_t w;
+};
+
+struct arm_instruction {
enum arm_instruction_type type;
char text[128];
- u32 opcode;
-
- /* target */
- u32 target_address;
-
-} arm_instruction_t;
+ uint32_t opcode;
+
+ /* return value ... Thumb-2 sizes vary */
+ unsigned instruction_size;
+
+ union {
+ struct arm_b_bl_bx_blx_instr b_bl_bx_blx;
+ struct arm_data_proc_instr data_proc;
+ struct arm_load_store_instr load_store;
+ struct arm_load_store_multiple_instr load_store_multiple;
+ } info;
+
+};
-extern int evaluate_opcode(u32 opcode, u32 address, arm_instruction_t *instruction);
+int arm_evaluate_opcode(uint32_t opcode, uint32_t address,
+ struct arm_instruction *instruction);
+int thumb_evaluate_opcode(uint16_t opcode, uint32_t address,
+ struct arm_instruction *instruction);
+int arm_access_size(struct arm_instruction *instruction);
+#if HAVE_CAPSTONE
+int arm_disassemble(struct command_invocation *cmd, struct target *target,
+ target_addr_t address, size_t count, bool thumb_mode);
+#endif
-#define COND(opcode) (arm_condition_strings[(opcode & 0xf0000000)>>28])
+#define COND(opcode) (arm_condition_strings[(opcode & 0xf0000000) >> 28])
-#endif /* ARM_DISASSEMBLER_H */
+#endif /* OPENOCD_TARGET_ARM_DISASSEMBLER_H */
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