void PEA_Disasm(DisassemblyInfo info)
{
var pc = info.PC + 2;
int mode = (Op >> 3) & 7;
int reg = (Op >> 0) & 7;
info.Mnemonic = "pea";
info.Args = DisassembleAddress(mode, reg, ref pc);
info.Length = pc - info.PC;
}
void BSETi_Disasm(DisassemblyInfo info)
{
var pc = info.PC + 2;
int bit = _ReadOpWord(pc); pc += 2;
int mode = (Op >> 3) & 7;
int reg = Op & 7;
info.Mnemonic = "bset";
info.Args = String.Format("${0:X}, {1}", bit, DisassembleValue(mode, reg, 1, ref pc));
info.Length = pc - info.PC;
}
void BSETr_Disasm(DisassemblyInfo info)
{
var pc = info.PC + 2;
int dReg = (Op >> 9) & 7;
int mode = (Op >> 3) & 7;
int reg = Op & 7;
info.Mnemonic = "bset";
info.Args = String.Format("D{0}, {1}", dReg, DisassembleValue(mode, reg, 1, ref pc));
info.Length = pc - info.PC;
}
void Scc_Disasm(DisassemblyInfo info)
{
var pc = info.PC + 2;
int cond = (Op >> 8) & 0x0F;
int mode = (Op >> 3) & 7;
int reg = (Op >> 0) & 7;
info.Mnemonic = "s" + DisassembleCondition(cond);
info.Args = DisassembleValue(mode, reg, 1, ref pc);
info.Length = pc - info.PC;
}
void DBcc_Disasm(DisassemblyInfo info)
{
int cond = (Op >> 8) & 0x0F;
info.Mnemonic = "db" + DisassembleCondition(cond);
var pc = info.PC + 2;
info.Args = String.Format("D{0}, ${1:X}", Op & 7, pc + _ReadWord(pc));
info.Length = 4;
}
void EXT_Disasm(DisassemblyInfo info)
{
int size = (Op >> 6) & 1;
int reg = Op & 7;
switch (size)
{
case 0: info.Mnemonic = "ext.w"; info.Args = "D" + reg; break;
case 1: info.Mnemonic = "ext.l"; info.Args = "D" + reg; break;
}
}
void LEA_Disasm(DisassemblyInfo info)
{
var pc = info.PC + 2;
int mode = (Op >> 3) & 7;
int sReg = (Op >> 0) & 7;
int dReg = (Op >> 9) & 7;
info.Mnemonic = "lea";
info.Args = DisassembleAddress(mode, sReg, ref pc);
info.Args += ", A" + dReg;
info.Length = pc - info.PC;
}
void MOVEM1_Disasm(DisassemblyInfo info)
{
var pc = info.PC + 2;
int size = (Op >> 6) & 1;
int mode = (Op >> 3) & 7;
int reg = (Op >> 0) & 7;
ushort registers = (ushort)_ReadOpWord(pc); pc += 2;
string address = DisassembleAddress(mode, reg, ref pc);
info.Mnemonic = size == 0 ? "movem.w" : "movem.l";
info.Args = address + ", " + DisassembleRegisterList1(registers);
info.Length = pc - info.PC;
}
void TST_Disasm(DisassemblyInfo info)
{
var pc = info.PC + 2;
int size = (Op >> 6) & 3;
int mode = (Op >> 3) & 7;
int reg = (Op >> 0) & 7;
switch (size)
{
case 0: info.Mnemonic = "tst.b"; info.Args = DisassembleValue(mode, reg, 1, ref pc); break;
case 1: info.Mnemonic = "tst.w"; info.Args = DisassembleValue(mode, reg, 2, ref pc); break;
case 2: info.Mnemonic = "tst.l"; info.Args = DisassembleValue(mode, reg, 4, ref pc); break;
}
info.Length = pc - info.PC;
}
void Bcc_Disasm(DisassemblyInfo info)
{
var pc = info.PC + 2;
sbyte displacement8 = (sbyte)Op;
int cond = (Op >> 8) & 0x0F;
info.Mnemonic = "b" + DisassembleCondition(cond);
if (displacement8 != 0)
{
info.Args = string.Format("${0:X}", pc + displacement8);
}
else
{
info.Args = string.Format("${0:X}", pc + _ReadOpWord(pc));
pc += 2;
}
info.Length = pc - info.PC;
}
void BSR_Disasm(DisassemblyInfo info)
{
var pc = info.PC + 2;
info.Mnemonic = "bsr";
sbyte displacement8 = (sbyte)Op;
if (displacement8 != 0)
{
info.Args = String.Format("${0:X}", pc + displacement8);
}
else
{
info.Args = String.Format("${0:X}", pc + _ReadOpWord(pc));
pc += 2;
}
info.Length = pc - info.PC;
}
void MOVEA_Disasm(DisassemblyInfo info)
{
var pc = info.PC + 2;
int size = ((Op >> 12) & 0x03);
int dstReg = ((Op >> 9) & 0x07);
int srcMode = ((Op >> 3) & 0x07);
int srcReg = (Op & 0x07);
if (size == 3)
{
info.Mnemonic = "movea.w";
info.Args = DisassembleValue(srcMode, srcReg, 2, ref pc) + ", A" + dstReg;
}
else
{
info.Mnemonic = "movea.l";
info.Args = DisassembleValue(srcMode, srcReg, 4, ref pc) + ", A" + dstReg;
}
info.Length = pc - info.PC;
}
void TRAP_Disasm(DisassemblyInfo info)
{
info.Mnemonic = "trap";
info.Args = string.Format("${0:X}", Op & 0xF);
}
public DisassemblyInfo Disassemble(uint pc)
{
var info = new DisassemblyInfo {
Mnemonic = "UNKNOWN", PC = pc, Length = 2
};
Op = (ushort)_ReadOpWord(pc);
if (Opcodes[Op] == MOVE)
{
MOVE_Disasm(info);
}
else if (Opcodes[Op] == MOVEA)
{
MOVEA_Disasm(info);
}
else if (Opcodes[Op] == MOVEQ)
{
MOVEQ_Disasm(info);
}
else if (Opcodes[Op] == MOVEM0)
{
MOVEM0_Disasm(info);
}
else if (Opcodes[Op] == MOVEM1)
{
MOVEM1_Disasm(info);
}
else if (Opcodes[Op] == LEA)
{
LEA_Disasm(info);
}
else if (Opcodes[Op] == CLR)
{
CLR_Disasm(info);
}
else if (Opcodes[Op] == EXT)
{
EXT_Disasm(info);
}
else if (Opcodes[Op] == PEA)
{
PEA_Disasm(info);
}
else if (Opcodes[Op] == ANDI)
{
ANDI_Disasm(info);
}
else if (Opcodes[Op] == ANDI_CCR)
{
ANDI_CCR_Disasm(info);
}
else if (Opcodes[Op] == EORI)
{
EORI_Disasm(info);
}
else if (Opcodes[Op] == EORI_CCR)
{
EORI_CCR_Disasm(info);
}
else if (Opcodes[Op] == ORI)
{
ORI_Disasm(info);
}
else if (Opcodes[Op] == ORI_CCR)
{
ORI_CCR_Disasm(info);
}
else if (Opcodes[Op] == ASLd)
{
ASLd_Disasm(info);
}
else if (Opcodes[Op] == ASRd)
{
ASRd_Disasm(info);
}
else if (Opcodes[Op] == LSLd)
{
LSLd_Disasm(info);
}
else if (Opcodes[Op] == LSRd)
{
LSRd_Disasm(info);
}
else if (Opcodes[Op] == ROXLd)
{
ROXLd_Disasm(info);
}
else if (Opcodes[Op] == ROXRd)
{
ROXRd_Disasm(info);
}
else if (Opcodes[Op] == ROLd)
{
ROLd_Disasm(info);
}
else if (Opcodes[Op] == RORd)
{
RORd_Disasm(info);
}
else if (Opcodes[Op] == ASLd0)
{
ASLd0_Disasm(info);
}
else if (Opcodes[Op] == ASRd0)
{
ASRd0_Disasm(info);
}
else if (Opcodes[Op] == LSLd0)
{
LSLd0_Disasm(info);
}
else if (Opcodes[Op] == LSRd0)
{
LSRd0_Disasm(info);
}
else if (Opcodes[Op] == ROXLd0)
{
ROXLd0_Disasm(info);
}
else if (Opcodes[Op] == ROXRd0)
{
ROXRd0_Disasm(info);
}
else if (Opcodes[Op] == ROLd0)
{
ROLd0_Disasm(info);
}
else if (Opcodes[Op] == RORd0)
{
RORd0_Disasm(info);
}
else if (Opcodes[Op] == SWAP)
{
SWAP_Disasm(info);
}
else if (Opcodes[Op] == AND0)
{
AND0_Disasm(info);
}
else if (Opcodes[Op] == AND1)
{
AND1_Disasm(info);
}
else if (Opcodes[Op] == EOR)
{
EOR_Disasm(info);
}
else if (Opcodes[Op] == OR0)
{
OR0_Disasm(info);
}
else if (Opcodes[Op] == OR1)
{
OR1_Disasm(info);
}
else if (Opcodes[Op] == NOT)
{
NOT_Disasm(info);
}
else if (Opcodes[Op] == NEG)
{
NEG_Disasm(info);
}
else if (Opcodes[Op] == JMP)
{
JMP_Disasm(info);
}
else if (Opcodes[Op] == JSR)
{
JSR_Disasm(info);
}
else if (Opcodes[Op] == Bcc)
{
Bcc_Disasm(info);
}
else if (Opcodes[Op] == BRA)
{
BRA_Disasm(info);
}
else if (Opcodes[Op] == BSR)
{
BSR_Disasm(info);
}
else if (Opcodes[Op] == DBcc)
{
DBcc_Disasm(info);
}
else if (Opcodes[Op] == Scc)
{
Scc_Disasm(info);
}
else if (Opcodes[Op] == RTE)
{
RTE_Disasm(info);
}
else if (Opcodes[Op] == RTS)
{
RTS_Disasm(info);
}
else if (Opcodes[Op] == RTR)
{
RTR_Disasm(info);
}
else if (Opcodes[Op] == TST)
{
TST_Disasm(info);
}
else if (Opcodes[Op] == BTSTi)
{
BTSTi_Disasm(info);
}
else if (Opcodes[Op] == BTSTr)
{
BTSTr_Disasm(info);
}
else if (Opcodes[Op] == BCHGi)
{
BCHGi_Disasm(info);
}
else if (Opcodes[Op] == BCHGr)
{
BCHGr_Disasm(info);
}
else if (Opcodes[Op] == BCLRi)
{
BCLRi_Disasm(info);
}
else if (Opcodes[Op] == BCLRr)
{
BCLRr_Disasm(info);
}
else if (Opcodes[Op] == BSETi)
{
BSETi_Disasm(info);
}
else if (Opcodes[Op] == BSETr)
{
BSETr_Disasm(info);
}
else if (Opcodes[Op] == LINK)
{
LINK_Disasm(info);
}
else if (Opcodes[Op] == UNLK)
{
UNLK_Disasm(info);
}
else if (Opcodes[Op] == RESET)
{
RESET_Disasm(info);
}
else if (Opcodes[Op] == NOP)
{
NOP_Disasm(info);
}
else if (Opcodes[Op] == ADD0)
{
ADD_Disasm(info);
}
else if (Opcodes[Op] == ADD1)
{
ADD_Disasm(info);
}
else if (Opcodes[Op] == ADDA)
{
ADDA_Disasm(info);
}
else if (Opcodes[Op] == ADDI)
{
ADDI_Disasm(info);
}
else if (Opcodes[Op] == ADDQ)
{
ADDQ_Disasm(info);
}
else if (Opcodes[Op] == SUB0)
{
SUB_Disasm(info);
}
else if (Opcodes[Op] == SUB1)
{
SUB_Disasm(info);
}
else if (Opcodes[Op] == SUBA)
{
SUBA_Disasm(info);
}
else if (Opcodes[Op] == SUBI)
{
SUBI_Disasm(info);
}
else if (Opcodes[Op] == SUBQ)
{
SUBQ_Disasm(info);
}
else if (Opcodes[Op] == CMP)
{
CMP_Disasm(info);
}
else if (Opcodes[Op] == CMPM)
{
CMPM_Disasm(info);
}
else if (Opcodes[Op] == CMPA)
{
CMPA_Disasm(info);
}
else if (Opcodes[Op] == CMPI)
{
CMPI_Disasm(info);
}
else if (Opcodes[Op] == MULU_WORD)
{
MULU_Disasm(info);
}
else if (Opcodes[Op] == MULS)
{
MULS_Disasm(info);
}
else if (Opcodes[Op] == DIVU_WORD)
{
DIVU_Disasm(info);
}
else if (Opcodes[Op] == DIVS)
{
DIVS_Disasm(info);
}
else if (Opcodes[Op] == MOVEtSR)
{
MOVEtSR_Disasm(info);
}
else if (Opcodes[Op] == MOVEfSR)
{
MOVEfSR_Disasm(info);
}
else if (Opcodes[Op] == MOVEUSP)
{
MOVEUSP_Disasm(info);
}
else if (Opcodes[Op] == ANDI_SR)
{
ANDI_SR_Disasm(info);
}
else if (Opcodes[Op] == EORI_SR)
{
EORI_SR_Disasm(info);
}
else if (Opcodes[Op] == ORI_SR)
{
ORI_SR_Disasm(info);
}
else if (Opcodes[Op] == MOVECCR)
{
MOVECCR_Disasm(info);
}
else if (Opcodes[Op] == TRAP)
{
TRAP_Disasm(info);
}
else if (Opcodes[Op] == NBCD)
{
NBCD_Disasm(info);
}
else if (Opcodes[Op] == ILLEGAL)
{
ILLEGAL_Disasm(info);
}
else if (Opcodes[Op] == STOP)
{
STOP_Disasm(info);
}
else if (Opcodes[Op] == TRAPV)
{
TRAPV_Disasm(info);
}
else if (Opcodes[Op] == CHK)
{
CHK_Disasm(info);
}
else if (Opcodes[Op] == NEGX)
{
NEGX_Disasm(info);
}
else if (Opcodes[Op] == SBCD0)
{
SBCD0_Disasm(info);
}
else if (Opcodes[Op] == SBCD1)
{
SBCD1_Disasm(info);
}
else if (Opcodes[Op] == ABCD0)
{
ABCD0_Disasm(info);
}
else if (Opcodes[Op] == ABCD1)
{
ABCD1_Disasm(info);
}
else if (Opcodes[Op] == EXGdd)
{
EXGdd_Disasm(info);
}
else if (Opcodes[Op] == EXGaa)
{
EXGaa_Disasm(info);
}
else if (Opcodes[Op] == EXGda)
{
EXGda_Disasm(info);
}
else if (Opcodes[Op] == TAS)
{
TAS_Disasm(info);
}
else if (Opcodes[Op] == MOVEP)
{
MOVEP_Disasm(info);
}
else if (Opcodes[Op] == ADDX0)
{
ADDX0_Disasm(info);
}
else if (Opcodes[Op] == ADDX1)
{
ADDX1_Disasm(info);
}
else if (Opcodes[Op] == SUBX0)
{
SUBX0_Disasm(info);
}
else if (Opcodes[Op] == SUBX1)
{
SUBX1_Disasm(info);
}
else if (Opcodes[Op] == ILL)
{
ILL_Disasm(info);
}
var sb = new StringBuilder();
for (var p = info.PC; p < info.PC + info.Length; p += 2)
{
sb.AppendFormat("{0:X4} ", _ReadOpWord(p));
}
info.RawBytes = sb.ToString();
return(info);
}
void NOP_Disasm(DisassemblyInfo info)
{
info.Mnemonic = "nop";
}
void MOVEQ_Disasm(DisassemblyInfo info)
{
info.Mnemonic = "moveq";
info.Args = String.Format("{0}, D{1}", (sbyte)Op, (Op >> 9) & 7);
}
void RESET_Disasm(DisassemblyInfo info)
{
info.Mnemonic = "reset";
info.Args = "";
}
void RTE_Disasm(DisassemblyInfo info)
{
info.Mnemonic = "rte";
info.Args = "";
}
