static List<CStatement> Add_C(uint pc, uint instruction)
{
Instruction i = new Instruction(instruction);
/* op1 + op2 */
CStatement stat = new CStatement(CStatement.Kinds.Addition, RegName(i.RA()), RegName(i.RB()));
/* dest = expr */
CStatement ass = new CStatement(CStatement.Kinds.Assignment, RegName(i.RD()), stat);
List<CStatement> stats = new List<CStatement>();
stats.Add(ass);
if (i.OE())
MessageBox.Show("This instruction sets the O bit. I don't know how to translate it! Ignoring.");
if (i.RC())
stats.Add(new CStatement(CStatement.Kinds.Assignment, "cr0", RegName(i.RD())));
return stats;
}
static List<CStatement> Addi_C(uint pc, uint instruction)
{
Instruction i = new Instruction(instruction);
CStatement stat = new CStatement(CStatement.Kinds.Assignment, RegName(i.RD()));
if (i.RA() == 0)
stat.Op2 = new CStatement.COperand((ulong)(long)i.SIMM());
else if (i.SIMM() == 0)
stat.Op2 = new CStatement.COperand(RegName(i.RA()));
else
{
CStatement add = new CStatement(CStatement.Kinds.Addition, RegName(i.RA()), (ulong)(long)i.SIMM());
long val = (long)add.Op2.Value;
if (val < 0)
{
add.Kind = CStatement.Kinds.Subtraction;
add.Op2.Value = (ulong)-val;
}
stat.Op2 = new CStatement.COperand(add);
}
List<CStatement> stats = new List<CStatement>();
stats.Add(stat);
return stats;
}
static List<CStatement> Lwz_C(uint pc, uint instruction)
{
Instruction i = new Instruction(instruction);
CStatement stat = new CStatement(CStatement.Kinds.Assignment, RegName(i.RD()));
stat.OperandSizes = CStatement.Sizes.Int;
int ds = (int)i.SIMM();
if (i.RA() != 0)
stat.Op2 = new CStatement.COperand(RegName(i.RA()), ds);
else
{
stat.Op2 = new CStatement.COperand();
stat.Op2.Kind = CStatement.OperandKinds.AddressPointer;
stat.Op2.Offset = ds;
}
List<CStatement> stats = new List<CStatement>();
stats.Add(stat);
return stats;
}
static List<CStatement> Mfspr_C(uint pc, uint instruction)
{
Instruction i = new Instruction(instruction);
CStatement stat = new CStatement(CStatement.Kinds.Assignment, RegName(i.RD()));
stat.OperandSizes = CStatement.Sizes.Long;
stat.Op2 = new CStatement.COperand();
stat.Op2.Kind = CStatement.OperandKinds.Variable;
switch (i.SPR())
{
case 32:
stat.Op2.Name = "xer";
break;
case 256:
stat.Op2.Name = "lr";
break;
case 288:
stat.Op2.Name = "ctr";
break;
default:
stat.Op2.Name = "spr" + i.SPR();
break;
}
List<CStatement> stats = new List<CStatement>();
stats.Add(stat);
return stats;
}
static List<CStatement> Lbzx_C(uint pc, uint instruction)
{
Instruction i = new Instruction(instruction);
CStatement stat = new CStatement(CStatement.Kinds.Assignment, RegName(i.RD()));
stat.OperandSizes = CStatement.Sizes.Byte;
if (i.RA() != 0)
{
if (i.RB() != 0)
stat.Op2 = new CStatement.COperand(RegName(i.RA()), RegName(i.RB()));
else
stat.Op2 = new CStatement.COperand(RegName(i.RA()), 0);
}
else
stat.Op2 = new CStatement.COperand(RegName(i.RB()), 0);
List<CStatement> stats = new List<CStatement>();
stats.Add(stat);
return stats;
}
