protected override void EmitImpl(Assembler a)
{
a.Comment = Comment;
a.EmitOptions = _emitOptions;
if (IsSpecial)
{
// ${SPECIAL_INSTRUCTION_HANDLING_BEGIN}
switch (_code)
{
case InstructionCode.Cpuid:
a.EmitInstruction(_code);
return;
case InstructionCode.Cbw:
case InstructionCode.Cdqe:
case InstructionCode.Cwde:
a.EmitInstruction(_code);
return;
case InstructionCode.Cdq:
case InstructionCode.Cqo:
case InstructionCode.Cwd:
a.EmitInstruction(_code);
return;
case InstructionCode.Cmpxchg:
a.EmitInstruction(_code, _operands[1], _operands[2]);
return;
case InstructionCode.Cmpxchg8b:
case InstructionCode.Cmpxchg16b:
if (_code == InstructionCode.Cmpxchg16b && !Util.IsX64)
throw new NotSupportedException(string.Format("The '{0}' instruction is only supported on X64.", _code));
a.EmitInstruction(_code, _operands[4]);
return;
case InstructionCode.Daa:
case InstructionCode.Das:
if (!Util.IsX86)
throw new NotSupportedException(string.Format("The '{0}' instruction is only supported on X86.", _code));
a.EmitInstruction(_code);
return;
case InstructionCode.Imul:
case InstructionCode.Mul:
case InstructionCode.Idiv:
case InstructionCode.Div:
// INST dst_lo (implicit), dst_hi (implicit), src (explicit)
if (_operands.Length != 3)
throw new NotSupportedException();
a.EmitInstruction(_code, _operands[2]);
return;
case InstructionCode.MovPtr:
break;
case InstructionCode.Lahf:
case InstructionCode.Sahf:
a.EmitInstruction(_code);
return;
case InstructionCode.Maskmovdqu:
case InstructionCode.Maskmovq:
a.EmitInstruction(_code, _operands[1], _operands[2]);
return;
case InstructionCode.Enter:
case InstructionCode.Leave:
// TODO: SPECIAL INSTRUCTION.
break;
case InstructionCode.Ret:
// TODO: SPECIAL INSTRUCTION.
break;
case InstructionCode.Monitor:
case InstructionCode.Mwait:
// TODO: MONITOR/MWAIT (COMPILER).
break;
case InstructionCode.Pop:
case InstructionCode.Popad:
case InstructionCode.Popfd:
case InstructionCode.Popfq:
// TODO: SPECIAL INSTRUCTION.
break;
case InstructionCode.Push:
case InstructionCode.Pushad:
case InstructionCode.Pushfd:
case InstructionCode.Pushfq:
// TODO: SPECIAL INSTRUCTION.
break;
case InstructionCode.Rcl:
case InstructionCode.Rcr:
case InstructionCode.Rol:
case InstructionCode.Ror:
case InstructionCode.Sal:
case InstructionCode.Sar:
case InstructionCode.Shl:
case InstructionCode.Shr:
a.EmitInstruction(_code, _operands[0], Register.cl);
return;
case InstructionCode.Shld:
case InstructionCode.Shrd:
a.EmitInstruction(_code, _operands[0], _operands[1], Register.cl);
return;
case InstructionCode.Rdtsc:
case InstructionCode.Rdtscp:
a.EmitInstruction(_code);
return;
case InstructionCode.RepLodsb:
case InstructionCode.RepLodsd:
case InstructionCode.RepLodsq:
case InstructionCode.RepLodsw:
case InstructionCode.RepMovsb:
case InstructionCode.RepMovsd:
case InstructionCode.RepMovsq:
case InstructionCode.RepMovsw:
case InstructionCode.RepStosb:
case InstructionCode.RepStosd:
case InstructionCode.RepStosq:
case InstructionCode.RepStosw:
case InstructionCode.RepeCmpsb:
case InstructionCode.RepeCmpsd:
case InstructionCode.RepeCmpsq:
case InstructionCode.RepeCmpsw:
case InstructionCode.RepeScasb:
case InstructionCode.RepeScasd:
case InstructionCode.RepeScasq:
case InstructionCode.RepeScasw:
case InstructionCode.RepneCmpsb:
case InstructionCode.RepneCmpsd:
case InstructionCode.RepneCmpsq:
case InstructionCode.RepneCmpsw:
case InstructionCode.RepneScasb:
case InstructionCode.RepneScasd:
case InstructionCode.RepneScasq:
case InstructionCode.RepneScasw:
a.EmitInstruction(_code);
return;
default:
throw new CompilerException("Instruction is marked as special but no handling for it was present.");
}
// ${SPECIAL_INSTRUCTION_HANDLING_END}
}
switch (_operands.Length)
{
case 0:
a.EmitInstruction(_code);
break;
case 1:
a.EmitInstruction(_code, _operands[0]);
break;
case 2:
a.EmitInstruction(_code, _operands[0], _operands[1]);
break;
case 3:
a.EmitInstruction(_code, _operands[0], _operands[1], _operands[2]);
break;
default:
throw new NotSupportedException();
}
}