void AND0_Disasm(DisassemblyInfo info)
{
int dstReg = (op >> 9) & 0x07;
int size = (op >> 6) & 0x03;
int srcMode = (op >> 3) & 0x07;
int srcReg = op & 0x07;
int pc = info.PC + 2;
switch (size)
{
case 0: // Byte
info.Mnemonic = "and.b";
info.Args = string.Format("{0}, D{1}", DisassembleValue(srcMode, srcReg, 1, ref pc), dstReg);
break;
case 1: // Word
info.Mnemonic = "and.w";
info.Args = string.Format("{0}, D{1}", DisassembleValue(srcMode, srcReg, 2, ref pc), dstReg);
break;
case 2: // Long
info.Mnemonic = "and.l";
info.Args = string.Format("{0}, D{1}", DisassembleValue(srcMode, srcReg, 4, ref pc), dstReg);
break;
}
info.Length = pc - info.PC;
}
void ANDI_SR_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
info.Mnemonic = "andi";
info.Args = DisassembleImmediate(2, ref pc) + ", SR";
info.Length = pc - info.PC;
}
void MOVE_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int size = ((op >> 12) & 0x03);
int dstMode = ((op >> 6) & 0x07);
int dstReg = ((op >> 9) & 0x07);
int srcMode = ((op >> 3) & 0x07);
int srcReg = (op & 0x07);
switch (size)
{
case 1:
info.Mnemonic = "move.b";
info.Args = DisassembleValue(srcMode, srcReg, 1, ref pc) + ", ";
info.Args += DisassembleValue(dstMode, dstReg, 1, ref pc);
break;
case 3:
info.Mnemonic = "move.w";
info.Args = DisassembleValue(srcMode, srcReg, 2, ref pc) + ", ";
info.Args += DisassembleValue(dstMode, dstReg, 2, ref pc);
break;
case 2:
info.Mnemonic = "move.l";
info.Args = DisassembleValue(srcMode, srcReg, 4, ref pc) + ", ";
info.Args += DisassembleValue(dstMode, dstReg, 4, ref pc);
break;
}
info.Length = pc - info.PC;
}
void MOVEfSR_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
info.Mnemonic = "move";
info.Args = "SR, " + DisassembleValue(mode, reg, 2, ref pc);
info.Length = pc - info.PC;
}
void MOVEUSP_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int dir = (op >> 3) & 1;
int reg = op & 7;
info.Mnemonic = "move";
info.Args = (dir == 0) ? ("A" + reg + ", USP") : ("USP, A" + reg);
info.Length = pc - info.PC;
}
void MOVEUSP_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int dir = (op >> 3) & 1;
int reg = op & 7;
info.Mnemonic = "move";
info.Args = (dir == 0) ? ("A" + reg + ", USP") : ("USP, A" + reg);
info.Length = pc - info.PC;
}
void MOVEfSR_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
info.Mnemonic = "move";
info.Args = "SR, " + DisassembleValue(mode, reg, 2, ref pc);
info.Length = pc - info.PC;
}
void PEA_Disasm(DisassemblyInfo info)
{
int 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 JMP_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
info.Mnemonic = "jmp";
info.Args = DisassembleValue(mode, reg, 1, ref pc);
info.Length = pc - info.PC;
}
private void MOVEtSR_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
info.Mnemonic = "move";
info.Args = DisassembleValue(mode, reg, 2, ref pc) + ", SR";
info.Length = pc - info.PC;
}
private void Scc_Disasm(DisassemblyInfo info)
{
int 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;
}
private void BSETr_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int dReg = (op >> 9) & 7;
int mode = (op >> 3) & 7;
int reg = op & 7;
info.Mnemonic = "bset";
info.Args = $"D{dReg}, {DisassembleValue(mode, reg, 1, ref pc)}";
info.Length = pc - info.PC;
}
private void BSETi_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int bit = ReadWord(pc); pc += 2;
int mode = (op >> 3) & 7;
int reg = op & 7;
info.Mnemonic = "bset";
info.Args = $"#${bit:X}, {DisassembleValue(mode, reg, 1, ref pc)}";
info.Length = pc - info.PC;
}
void BSETr_Disasm(DisassemblyInfo info)
{
int 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 BSETi_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int bit = ReadWord(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 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 DIVS_Disasm(DisassemblyInfo info)
{
int dreg = (op >> 9) & 7;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
int pc = info.PC + 2;
info.Mnemonic = "divs";
info.Args = String.Format("{0}, D{1}", DisassembleValue(mode, reg, 2, ref pc), dreg);
info.Length = pc - info.PC;
}
private void DIVS_Disasm(DisassemblyInfo info)
{
int dreg = (op >> 9) & 7;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
int pc = info.PC + 2;
info.Mnemonic = "divs";
info.Args = $"{DisassembleValue(mode, reg, 2, ref pc)}, D{dreg}";
info.Length = pc - info.PC;
}
void LEA_Disasm(DisassemblyInfo info)
{
int 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;
}
private void ADDA_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int aReg = (op >> 9) & 7;
int size = (op >> 8) & 1;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
info.Mnemonic = (size == 0) ? "adda.w" : "adda.l";
info.Args = DisassembleValue(mode, reg, (size == 0) ? 2 : 4, ref pc) + ", A" + aReg;
info.Length = pc - info.PC;
}
void MOVEM1_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int size = (op >> 6) & 1;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
ushort registers = (ushort)ReadWord(pc); pc += 2;
string address = DisassembleAddress(mode, reg, ref pc);
info.Mnemonic = size == 0 ? "movem.w" : "movem.l";
info.Args = address + ", " + DisassembleRegisterList1((uint)registers << 16);
info.Length = pc - info.PC;
}
void CLR_Disasm(DisassemblyInfo info)
{
int 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 = "clr.b"; info.Args = DisassembleValue(mode, reg, 1, ref pc); break;
case 1: info.Mnemonic = "clr.w"; info.Args = DisassembleValue(mode, reg, 2, ref pc); break;
case 2: info.Mnemonic = "clr.l"; info.Args = DisassembleValue(mode, reg, 4, ref pc); break;
}
info.Length = pc - info.PC;
}
void CLR_Disasm(DisassemblyInfo info)
{
int 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 = "clr.b"; info.Args = DisassembleValue(mode, reg, 1, ref pc); break;
case 1: info.Mnemonic = "clr.w"; info.Args = DisassembleValue(mode, reg, 2, ref pc); break;
case 2: info.Mnemonic = "clr.l"; info.Args = DisassembleValue(mode, reg, 4, ref pc); break;
}
info.Length = pc - info.PC;
}
private void Bcc_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
sbyte displacement8 = (sbyte)op;
int cond = (op >> 8) & 0x0F;
info.Mnemonic = "b" + DisassembleCondition(cond);
if (displacement8 != 0)
{
info.Args = $"${pc + displacement8:X}";
}
else
{
info.Args = $"${pc + ReadWord(pc):X}";
pc += 2;
}
info.Length = pc - info.PC;
}
private void DBcc_Disasm(DisassemblyInfo info)
{
int cond = (op >> 8) & 0x0F;
if (cond == 1)
{
info.Mnemonic = "dbra";
}
else
{
info.Mnemonic = "db" + DisassembleCondition(cond);
}
int pc = info.PC + 2;
info.Args = $"D{op & 7}, ${pc + ReadWord(pc):X}";
info.Length = 4;
}
private void CMPM_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int axReg = (op >> 9) & 7;
int size = (op >> 6) & 3;
int ayReg = (op >> 0) & 7;
switch (size)
{
case 0: info.Mnemonic = "cmpm.b"; break;
case 1: info.Mnemonic = "cmpm.w"; break;
case 2: info.Mnemonic = "cmpm.l"; break;
}
info.Args = $"(A{ayReg})+, (A{axReg})+";
info.Length = pc - info.PC;
}
void Bcc_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
sbyte displacement8 = (sbyte)op;
int cond = (op >> 8) & 0x0F;
info.Mnemonic = "b" + DisassembleCondition(cond);
if (displacement8 != 0)
{
info.Args = string.Format("${0:X}", pc + displacement8);
}
else
{
info.Args = string.Format("${0:X}", pc + ReadWord(pc));
pc += 2;
}
info.Length = pc - info.PC;
}
void DBcc_Disasm(DisassemblyInfo info)
{
int cond = (op >> 8) & 0x0F;
if (cond == 1)
{
info.Mnemonic = "dbra";
}
else
{
info.Mnemonic = "db" + DisassembleCondition(cond);
}
int pc = info.PC + 2;
info.Args = String.Format("D{0}, ${1:X}", op & 7, pc + ReadWord(pc));
info.Length = 4;
}
void CMPM_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int axReg = (op >> 9) & 7;
int size = (op >> 6) & 3;
int ayReg = (op >> 0) & 7;
switch (size)
{
case 0: info.Mnemonic = "cmpm.b"; break;
case 1: info.Mnemonic = "cmpm.w"; break;
case 2: info.Mnemonic = "cmpm.l"; break;
}
info.Args = string.Format("(A{0})+, (A{1})+", ayReg, axReg);
info.Length = pc - info.PC;
}
void BSR_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
info.Mnemonic = "bsr";
sbyte displacement8 = (sbyte)op;
if (displacement8 != 0)
{
info.Args = String.Format("${0:X}", pc + displacement8);
}
else
{
info.Args = String.Format("${0:X}", pc + ReadWord(pc));
pc += 2;
}
info.Length = pc - info.PC;
}
private void BSR_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
info.Mnemonic = "bsr";
sbyte displacement8 = (sbyte)op;
if (displacement8 != 0)
{
info.Args = $"${pc + displacement8:X}";
}
else
{
info.Args = $"${pc + ReadWord(pc):X}";
pc += 2;
}
info.Length = pc - info.PC;
}
void MOVEA_Disasm(DisassemblyInfo info)
{
int 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;
}
private void SUBQ_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int data = (op >> 9) & 7;
int size = (op >> 6) & 3;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
data = data == 0 ? 8 : data; // range is 1-8; 0 represents 8
switch (size)
{
case 0: info.Mnemonic = "subq.b"; info.Args = "#" + data + ", " + DisassembleValue(mode, reg, 1, ref pc); break;
case 1: info.Mnemonic = "subq.w"; info.Args = "#" + data + ", " + DisassembleValue(mode, reg, 2, ref pc); break;
case 2: info.Mnemonic = "subq.l"; info.Args = "#" + data + ", " + DisassembleValue(mode, reg, 4, ref pc); break;
}
info.Length = pc - info.PC;
}
void ANDI_Disasm(DisassemblyInfo info)
{
int size = ((op >> 6) & 0x03);
int dstMode = ((op >> 3) & 0x07);
int dstReg = (op & 0x07);
int pc = info.PC + 2;
switch (size)
{
case 0: // Byte
{
info.Mnemonic = "andi.b";
sbyte imm = (sbyte)ReadWord(pc); pc += 2;
info.Args = string.Format("#${0:X}, ", imm);
info.Args += DisassembleValue(dstMode, dstReg, 1, ref pc);
break;
}
case 1: // Word
{
info.Mnemonic = "andi.w";
short imm = ReadWord(pc); pc += 2;
info.Args = string.Format("#${0:X}, ", imm);
info.Args += DisassembleValue(dstMode, dstReg, 2, ref pc);
break;
}
case 2: // Long
{
info.Mnemonic = "andi.l";
int imm = ReadLong(pc); pc += 4;
info.Args = string.Format("#${0:X}, ", imm);
info.Args += DisassembleValue(dstMode, dstReg, 4, ref pc);
break;
}
}
info.Length = pc - info.PC;
}
private void SUB_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int dReg = (op >> 9) & 7;
int dir = (op >> 8) & 1;
int size = (op >> 6) & 3;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
string op1 = "D" + dReg;
string op2;
switch (size)
{
case 0: info.Mnemonic = "sub.b"; op2 = DisassembleValue(mode, reg, 1, ref pc); break;
case 1: info.Mnemonic = "sub.w"; op2 = DisassembleValue(mode, reg, 2, ref pc); break;
default: info.Mnemonic = "sub.l"; op2 = DisassembleValue(mode, reg, 4, ref pc); break;
}
info.Args = dir == 0 ? (op2 + ", " + op1) : (op1 + ", " + op2);
info.Length = pc - info.PC;
}
private void CMPA_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int aReg = (op >> 9) & 7;
int size = (op >> 8) & 1;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
switch (size)
{
case 0:
info.Mnemonic = "cmpa.w";
info.Args = DisassembleValue(mode, reg, 2, ref pc) + ", A" + aReg;
break;
case 1:
info.Mnemonic = "cmpa.l";
info.Args = DisassembleValue(mode, reg, 4, ref pc) + ", A" + aReg;
break;
}
info.Length = pc - info.PC;
}
void ASRd_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int rot = (op >> 9) & 7;
int size = (op >> 6) & 3;
int m = (op >> 5) & 1;
int reg = op & 7;
if (m == 0 && rot == 0) rot = 8;
switch (size)
{
case 0: info.Mnemonic = "asr.b"; break;
case 1: info.Mnemonic = "asr.w"; break;
case 2: info.Mnemonic = "asr.l"; break;
}
if (m == 0) info.Args = rot + ", D" + reg;
else info.Args = "D" + rot + ", D" + reg;
info.Length = pc - info.PC;
}
void NOT_Disasm(DisassemblyInfo info)
{
int size = (op >> 6) & 0x03;
int mode = (op >> 3) & 0x07;
int reg = op & 0x07;
int pc = info.PC + 2;
switch (size)
{
case 0: // Byte
info.Mnemonic = "not.b";
info.Args = DisassembleValue(mode, reg, 1, ref pc);
break;
case 1: // Word
info.Mnemonic = "not.w";
info.Args = DisassembleValue(mode, reg, 2, ref pc);
break;
case 2: // Long
info.Mnemonic = "not.l";
info.Args = DisassembleValue(mode, reg, 4, ref pc);
break;
}
info.Length = pc - info.PC;
}
void BSETr_Disasm(DisassemblyInfo info)
{
int 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 SUBQ_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int data = (op >> 9) & 7;
int size = (op >> 6) & 3;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
data = data == 0 ? 8 : data; // range is 1-8; 0 represents 8
switch (size)
{
case 0: info.Mnemonic = "subq.b"; info.Args = data + ", " + DisassembleValue(mode, reg, 1, ref pc); break;
case 1: info.Mnemonic = "subq.w"; info.Args = data + ", " + DisassembleValue(mode, reg, 2, ref pc); break;
case 2: info.Mnemonic = "subq.l"; info.Args = data + ", " + DisassembleValue(mode, reg, 4, ref pc); break;
}
info.Length = pc - info.PC;
}
void CMPA_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int aReg = (op >> 9) & 7;
int size = (op >> 8) & 1;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
switch (size)
{
case 0:
info.Mnemonic = "cmpa.w";
info.Args = DisassembleValue(mode, reg, 2, ref pc) + ", A" + aReg;
break;
case 1:
info.Mnemonic = "cmpa.l";
info.Args = DisassembleValue(mode, reg, 4, ref pc) + ", A" + aReg;
break;
}
info.Length = pc - info.PC;
}
void BSR_Disasm(DisassemblyInfo info)
{
int 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("${0:X}", pc + ReadWord(pc));
pc += 2;
}
info.Length = pc - info.PC;
}
void Bcc_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
sbyte displacement8 = (sbyte)op;
int cond = (op >> 8) & 0x0F;
info.Mnemonic = "b" + DisassembleCondition(cond);
if (displacement8 != 0)
{
info.Args = string.Format("${0:X}", pc + displacement8);
}
else
{
info.Args = string.Format("${0:X}", pc + ReadWord(pc));
pc += 2;
}
info.Length = pc - info.PC;
}
void Scc_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int cond = (op >> 8) & 0x0F;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
info.Mnemonic = "s" + DisassembleCondition(cond);
info.Args = DisassembleValue(mode, reg, 1, ref pc);
info.Length = pc - info.PC;
}
void NOP_Disasm(DisassemblyInfo info)
{
info.Mnemonic = "nop";
}
void UNLK_Disasm(DisassemblyInfo info)
{
int reg = op & 7;
info.Mnemonic = "unlk";
info.Args = "A" + reg;
info.Length = 2;
}
void LINK_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int reg = op & 7;
info.Mnemonic = "link";
info.Args = "A" + reg + ", " + DisassembleImmediate(2, ref pc); // TODO need a DisassembleSigned or something
info.Length = pc - info.PC;
}
void JSR_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
info.Mnemonic = "jsr";
info.Args = DisassembleAddress(mode, reg, ref pc);
info.Length = pc - info.PC;
}
void JMP_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
info.Mnemonic = "jmp";
info.Args = DisassembleValue(mode, reg, 1, ref pc);
info.Length = pc - info.PC;
}
void TRAP_Disasm(DisassemblyInfo info)
{
info.Mnemonic = "trap";
info.Args = string.Format("#${0:X}", op & 0xF);
}
void DBcc_Disasm(DisassemblyInfo info)
{
int cond = (op >> 8) & 0x0F;
if (cond == 1)
info.Mnemonic = "dbra";
else
info.Mnemonic = "db" + DisassembleCondition(cond);
int pc = info.PC + 2;
info.Args = String.Format("D{0}, ${1:X}", op & 7, pc + ReadWord(pc));
info.Length = 4;
}
public DisassemblyInfo Disassemble(int pc)
{
var info = new DisassemblyInfo { Mnemonic = "UNKNOWN", PC = pc, Length = 2 };
op = (ushort)ReadWord(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] == EORI) EORI_Disasm(info);
else if (Opcodes[op] == ORI) ORI_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] == 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] == 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) MULU_Disasm(info);
else if (Opcodes[op] == MULS) MULS_Disasm(info);
else if (Opcodes[op] == DIVU) 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);
var sb = new StringBuilder();
for (int p = info.PC; p < info.PC + info.Length; p++)
sb.AppendFormat("{0:X2}", ReadByte(p));
info.RawBytes = sb.ToString();
return info;
}
void CMPM_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int axReg = (op >> 9) & 7;
int size = (op >> 6) & 3;
int ayReg = (op >> 0) & 7;
switch (size)
{
case 0: info.Mnemonic = "cmpm.b"; break;
case 1: info.Mnemonic = "cmpm.w"; break;
case 2: info.Mnemonic = "cmpm.l"; break;
}
info.Args = string.Format("(A{0})+, (A{1})+", ayReg, axReg);
info.Length = pc - info.PC;
}
void SWAP_Disasm(DisassemblyInfo info)
{
int reg = op & 7;
info.Mnemonic = "swap";
info.Args = "D" + reg;
}
void SUBA_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int aReg = (op >> 9) & 7;
int size = (op >> 8) & 1;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
info.Mnemonic = (size == 0) ? "suba.w" : "suba.l";
info.Args = DisassembleValue(mode, reg, (size == 0) ? 2 : 4, ref pc) + ", A" + aReg;
info.Length = pc - info.PC;
}
void ANDI_Disasm(DisassemblyInfo info)
{
int size = ((op >> 6) & 0x03);
int dstMode = ((op >> 3) & 0x07);
int dstReg = (op & 0x07);
int pc = info.PC + 2;
switch (size)
{
case 0: // Byte
{
info.Mnemonic = "andi.b";
sbyte imm = (sbyte)ReadWord(pc); pc += 2;
info.Args = string.Format("${0:X}, ", imm);
info.Args += DisassembleValue(dstMode, dstReg, 1, ref pc);
break;
}
case 1: // Word
{
info.Mnemonic = "andi.w";
short imm = ReadWord(pc); pc += 2;
info.Args = string.Format("${0:X}, ", imm);
info.Args += DisassembleValue(dstMode, dstReg, 2, ref pc);
break;
}
case 2: // Long
{
info.Mnemonic = "andi.l";
int imm = ReadLong(pc); pc += 4;
info.Args = string.Format("${0:X}, ", imm);
info.Args += DisassembleValue(dstMode, dstReg, 4, ref pc);
break;
}
}
info.Length = pc - info.PC;
}
void RTE_Disasm(DisassemblyInfo info)
{
info.Mnemonic = "rte";
info.Args = "";
}
void ORI_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int size = (op >> 6) & 3;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
switch (size)
{
case 0: // byte
{
info.Mnemonic = "ori.b";
sbyte immed = (sbyte)ReadWord(pc); pc += 2;
info.Args = String.Format("${0:X}, {1}", immed, DisassembleValue(mode, reg, 1, ref pc));
break;
}
case 1: // word
{
info.Mnemonic = "ori.w";
short immed = ReadWord(pc); pc += 2;
info.Args = String.Format("${0:X}, {1}", immed, DisassembleValue(mode, reg, 2, ref pc));
break;
}
case 2: // long
{
info.Mnemonic = "ori.l";
int immed = ReadLong(pc); pc += 4;
info.Args = String.Format("${0:X}, {1}", immed, DisassembleValue(mode, reg, 4, ref pc));
break;
}
}
info.Length = pc - info.PC;
}
void CMPI_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int size = (op >> 6) & 3;
int mode = (op >> 3) & 7;
int reg = (op >> 0) & 7;
int immediate;
switch (size)
{
case 0:
immediate = (byte)ReadWord(pc); pc += 2;
info.Mnemonic = "cmpi.b";
info.Args = String.Format("${0:X}, {1}", immediate, DisassembleValue(mode, reg, 1, ref pc));
break;
case 1:
immediate = ReadWord(pc); pc += 2;
info.Mnemonic = "cmpi.w";
info.Args = String.Format("${0:X}, {1}", immediate, DisassembleValue(mode, reg, 2, ref pc));
break;
case 2:
immediate = ReadLong(pc); pc += 4;
info.Mnemonic = "cmpi.l";
info.Args = String.Format("${0:X}, {1}", immediate, DisassembleValue(mode, reg, 4, ref pc));
break;
}
info.Length = pc - info.PC;
}
void BSETi_Disasm(DisassemblyInfo info)
{
int pc = info.PC + 2;
int bit = ReadWord(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;
}
