public Val32(Val32 a, Val32 b)
{
isInitialized = a.isInitialized;
isNeedForRelocation = a.isNeedForRelocation;
ref1 = a;
ref2 = b;
}
public static OpCode Cmp(Reg32 op1, Val32 op2)
{
return FromName("cmp", op1, op2);
}
public static OpCode And(Addr32 op1, Val32 op2)
{
return FromName("and", op1, op2);
}
public static OpCode Add(Reg32 op1, Val32 op2)
{
return FromName("add", op1, op2);
}
public static OpCode Call(Val32 op1)
{
return new OpCode(new byte[] { 0xe8 }, op1, true);
}
public OpCode(byte[] d, Val32 op, bool rel)
{
data = d;
op1 = op;
relative = rel;
}
public static OpCode Jmp(Val32 op1)
{
return new OpCode(new byte[] { 0xe9 }, op1, true);
}
public void Add(int n)
{
if (n == 0) return;
if (address != null)
{
address = new Val32(address, (uint)n);
}
else
{
disp += n;
}
}
public static OpCode Sbb(Reg32 op1, Val32 op2)
{
return FromName("sbb", op1, op2);
}
public static OpCode Or(Reg32 op1, Val32 op2)
{
return FromName("or", op1, op2);
}
public static OpCode Mov(Addr32 op1, Val32 op2)
{
return FromName("mov", op1, op2);
}
public static OpCode FromName(string op, Addr32 op1, Val32 op2)
{
switch (op)
{
case "mov":
return new OpCode(new byte[] { 0xc7 }, op2, op1);
case "test":
return new OpCode(new byte[] { 0xf7 }, op2, op1);
default:
int code = GetOperatorCode(op);
if (code < 0) throw new Exception("invalid operator: " + op);
return new OpCode(new byte[] { 0x81 }, op2, new Addr32(op1, (byte)code));
}
}
public static OpCode FromName(string op, Reg32 op1, Val32 op2)
{
byte[] bytes;
switch (op)
{
case "mov":
bytes = new byte[] { (byte)(0xb8 + op1) };
break;
case "test":
if (op1 == Reg32.EAX)
bytes = new byte[] { 0xa9 };
else
bytes = new byte[] { 0xf7, (byte)(0xc0 + op1) };
break;
default:
int code = GetOperatorCode(op);
if (code < 0) throw new Exception("invalid operator: " + op);
if (op1 == Reg32.EAX)
bytes = new byte[] { (byte)(code * 8 + 5) };
else
bytes = new byte[] { 0x81, (byte)(code * 8 + 0xc0 + op1) };
break;
}
return new OpCode(bytes, op2);
}
// Push, Pop, Inc, Dec, Not, Neg, Mul, Imul, Div, Idiv
public static OpCode Push(Val32 op1)
{
return new OpCode(new byte[] { 0x68 }, op1);
}
public void Set(Addr32 src)
{
isInitialized = src.isInitialized;
reg = src.reg;
disp = src.disp;
address = src.address;
middleBits = src.middleBits;
}
public Addr32(Val32 ad)
{
address = ad;
}
public static OpCode Adc(Addr32 op1, Val32 op2)
{
return FromName("adc", op1, op2);
}
public static OpCode Jcc(Cc c, Val32 op1)
{
return new OpCode(new byte[] { 0x0f, (byte)(0x80 + c) }, op1, true);
}
public static OpCode Sub(Addr32 op1, Val32 op2)
{
return FromName("sub", op1, op2);
}
public static OpCode Loop(Val32 op1)
{
return new OpCode(new byte[] { 0xe2 }, op1, true) { ByteRelative = true };
}
public static OpCode Test(Addr32 op1, Val32 op2)
{
return FromName("test", op1, op2);
}
public void Add(Val32 v)
{
data.Add(v);
if (v.IsNeedForRelocation) relocs.Add(length);
length += sizeof(uint);
}
public static OpCode Xor(Addr32 op1, Val32 op2)
{
return FromName("xor", op1, op2);
}