msp430_disas.h File Reference

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Classes
struct	msp430_cmd

Enumerations
enum	msp430_oneop_opcodes {   MSP430_RRC , MSP430_SWPB , MSP430_RRA , MSP430_SXT ,   MSP430_PUSH , MSP430_CALL , MSP430_RETI , MSP430_UNUSED }
enum	msp430_jumps {   MSP430_JNE , MSP430_JEQ , MSP430_JNC , MSP430_JC ,   MSP430_JN , MSP430_JGE , MSP430_JL , MSP430_JMP }
enum	msp430_twoop_opcodes {   MSP430_JMP_OPC = 0x1 , MSP430_MOV = 0x4 , MSP430_ADD , MSP430_ADDC ,   MSP430_SUBC , MSP430_SUB , MSP430_CMP , MSP430_DADD ,   MSP430_BIT , MSP430_BIC , MSP430_BIS , MSP430_XOR ,   MSP430_AND }
enum	msp430_addr_modes { MSP430_DIRECT , MSP430_INDEXED , MSP430_INDIRECT , MSP430_INDIRECT_INC }
enum	msp430_cmd_type { MSP430_ONEOP , MSP430_TWOOP , MSP430_JUMP , MSP430_INV }
enum	msp430_registers {   MSP430_PC , MSP430_SP , MSP430_SR , MSP430_R3 ,   MSP430_R4 , MSP430_R5 , MSP430_R6 , MSP430_R7 ,   MSP430_R8 , MSP430_R9 , MSP430_R10 , MSP430_R11 ,   MSP430_R12 , MSP430_R13 , MSP430_R14 , MSP430_R15 }

Functions
int	msp430_decode_command (const ut8 *instr, int len, struct msp430_cmd *cmd)

Enumeration Type Documentation

msp430_addr_modes

enum msp430_addr_modes

Enumerator
MSP430_DIRECT
MSP430_INDEXED
MSP430_INDIRECT
MSP430_INDIRECT_INC

Definition at line 48 of file msp430_disas.h.

                       {
    MSP430_DIRECT,
    MSP430_INDEXED,
    MSP430_INDIRECT,
    MSP430_INDIRECT_INC,
};

msp430_cmd_type

enum msp430_cmd_type

Enumerator
MSP430_ONEOP
MSP430_TWOOP
MSP430_JUMP
MSP430_INV

Definition at line 55 of file msp430_disas.h.

                     {
    MSP430_ONEOP,
    MSP430_TWOOP,
    MSP430_JUMP,
    MSP430_INV,
};

msp430_jumps

enum msp430_jumps

Enumerator
MSP430_JNE
MSP430_JEQ
MSP430_JNC
MSP430_JC
MSP430_JN
MSP430_JGE
MSP430_JL
MSP430_JMP

Definition at line 21 of file msp430_disas.h.

                  {
    MSP430_JNE,
    MSP430_JEQ,
    MSP430_JNC,
    MSP430_JC,
    MSP430_JN,
    MSP430_JGE,
    MSP430_JL,
    MSP430_JMP,
};

msp430_oneop_opcodes

enum msp430_oneop_opcodes

Enumerator
MSP430_RRC
MSP430_SWPB
MSP430_RRA
MSP430_SXT
MSP430_PUSH
MSP430_CALL
MSP430_RETI
MSP430_UNUSED

Definition at line 10 of file msp430_disas.h.

                          {
    MSP430_RRC,
    MSP430_SWPB,
    MSP430_RRA,
    MSP430_SXT,
    MSP430_PUSH,
    MSP430_CALL,
    MSP430_RETI,
    MSP430_UNUSED,
};

msp430_registers

enum msp430_registers

Enumerator
MSP430_PC
MSP430_SP
MSP430_SR
MSP430_R3
MSP430_R4
MSP430_R5
MSP430_R6
MSP430_R7
MSP430_R8
MSP430_R9
MSP430_R10
MSP430_R11
MSP430_R12
MSP430_R13
MSP430_R14
MSP430_R15

Definition at line 62 of file msp430_disas.h.

                      {
    MSP430_PC,
    MSP430_SP,
    MSP430_SR,
    MSP430_R3,
    MSP430_R4,
    MSP430_R5,
    MSP430_R6,
    MSP430_R7,
    MSP430_R8,
    MSP430_R9,
    MSP430_R10,
    MSP430_R11,
    MSP430_R12,
    MSP430_R13,
    MSP430_R14,
    MSP430_R15,
};

msp430_twoop_opcodes

enum msp430_twoop_opcodes

Enumerator
MSP430_JMP_OPC
MSP430_MOV
MSP430_ADD
MSP430_ADDC
MSP430_SUBC
MSP430_SUB
MSP430_CMP
MSP430_DADD
MSP430_BIT
MSP430_BIC
MSP430_BIS
MSP430_XOR
MSP430_AND

Definition at line 32 of file msp430_disas.h.

                          {
    MSP430_JMP_OPC = 0x1,
    MSP430_MOV = 0x4,
    MSP430_ADD,
    MSP430_ADDC,
    MSP430_SUBC,
    MSP430_SUB,
    MSP430_CMP,
    MSP430_DADD,
    MSP430_BIT,
    MSP430_BIC,
    MSP430_BIS,
    MSP430_XOR,
    MSP430_AND,
};

Function Documentation

msp430_decode_command()

int msp430_decode_command	(	const ut8 *	instr,
		int	len,
		struct msp430_cmd *	cmd
	)

Definition at line 441 of file msp430_disas.c.

                                                                          {
    int ret = -1;
    ut16 operand1 = 0, operand2 = 0;
    if (len < 2) {
        return -1;
    }
    ut16 instr = rz_read_le16(in);
    ut8 opcode = get_twoop_opcode(instr);
 
    switch (opcode) {
    case MSP430_TWOOP_OPCODE_INVALID:
        // Invalid opcode.
        break;
    case MSP430_TWOOP_OPCODE_SINGLEOP:
        // Single operand instructions or invalid opcode.
        if ((instr & 0x0f80) <= 0x0300) {
            // Single operand instructions.
            if (len >= 4) {
                operand1 = rz_read_at_le16(in, 2);
            }
            ret = decode_oneop_opcode(instr, operand1, cmd);
        }
        break;
    case MSP430_TWOOP_OPCODE_JUMP2:
    case MSP430_TWOOP_OPCODE_JUMP3:
        // Jumps.
        decode_jmp(instr, cmd);
        ret = 2;
        break;
    default:
        // Double operand instructions.
        cmd->type = MSP430_TWOOP;
        if (len >= 4) {
            operand1 = rz_read_at_le16(in, 2);
            if (len >= 6) {
                operand2 = rz_read_at_le16(in, 4);
            }
        }
        ret = decode_twoop_opcode(instr, operand1, operand2, cmd);
        break;
    }
 
    /* if ret < 0, it's an invalid opcode.Say so and return 2 since
     * all MSP430 opcodes are of 16 bits,valid or invalid */
    if (ret < 0) {
        cmd->type = MSP430_INV;
        snprintf(cmd->instr, sizeof(cmd->instr), "invalid");
        cmd->operands[0] = '\0';
        ret = 2;
    }
 
    return ret;
}

References cmd, decode_jmp(), decode_oneop_opcode(), decode_twoop_opcode(), get_twoop_opcode(), in, len, MSP430_INV, MSP430_TWOOP, MSP430_TWOOP_OPCODE_INVALID, MSP430_TWOOP_OPCODE_JUMP2, MSP430_TWOOP_OPCODE_JUMP3, MSP430_TWOOP_OPCODE_SINGLEOP, rz_read_at_le16(), rz_read_le16(), and snprintf.

Referenced by disassemble(), and msp430_op().