public void LoadConst(IAsm a)
{
int value = Convert.ToInt32(a.getInsn());
if (value > 127 || value < -128) /* if must use long form */
{
il.Emit(OpCodes.Ldc_I4, value);
}
else if (value > 8 || value < -1) /* if must use medium form */
{
il.Emit(OpCodes.Ldc_I4_S, value);
}
else if (value == -1)
{
il.Emit(OpCodes.Ldc_I4_M1);
}
else /* else use short form */
{
Object o = opcodehash["ldc.i4." + a.getInsn()];
if (o == null)
{
Io.ICE("Could not find opcode for (Ldc_I4_" + a.getInsn() + ")");
}
il.Emit((OpCode)o);
}
}
public void setComment(String c)
{
if (comment != null)
{
Io.ICE("Comment overwrite");
}
comment = c;
}
void genLoad(Var e)
{
int id = e.getClassId();
if (e == null)
{
Io.ICE("Load instruction with no variable ptr");
}
if (e.getLocalToken() != null)
{
// LocalToken lt = (LocalToken) e.getLocalToken();
LocalBuilder lt = (LocalBuilder)e.getLocalToken();
il.Emit(OpCodes.Ldloc, lt);
}
else if (e.getFieldBuilder() != null)
{
FieldBuilder fb = (FieldBuilder)e.getFieldBuilder();
if (id == Tok.T_STATIC)
{
il.Emit(OpCodes.Ldsfld, fb);
}
else
{
il.Emit(OpCodes.Ldfld, fb);
}
}
else
{
int index = e.getIndex();
if (id == Tok.T_PARAM)
{
if (index <= 256)
{
il.Emit(OpCodes.Ldarg_S, index);
}
else
{
il.Emit(OpCodes.Ldarg, index);
}
}
else if (id == Tok.T_AUTO || id == Tok.T_DEFCLASS)
{
if (index <= 256)
{
il.Emit(OpCodes.Ldloc_S, e.getIndex());
}
else
{
il.Emit(OpCodes.Ldloc, e.getIndex());
}
}
else
{
Io.ICE("Instruction load of unknown class ("
+ e.getClassId() + ")");
}
}
}
public void Branch(IAsm a)
{
Object o = opcodehash[a.getInsn()];
if (o == null)
{
Io.ICE("Instruction branch opcode (" + a.getInsn() + ") not found in hash");
}
il.Emit((OpCode)o, (Label)getILLabel(a));
}
public void Insn(IAsm a)
{
Object o = opcodehash[a.getInsn()];
if (o == null)
{
Io.ICE("Instruction opcode (" + a.getInsn() + ") not found in hash");
}
il.Emit((OpCode)o);
}
public void Store(IAsm a)
{
Var e = a.getVar();
int id = e.getClassId();
if (e == null)
{
Io.ICE("Store instruction with no variable ptr");
}
if (e.getLocalToken() != null)
{
// LocalToken lt = (LocalToken) e.getLocalToken();
LocalBuilder lt = (LocalBuilder)e.getLocalToken();
il.Emit(OpCodes.Stloc, lt);
}
else if (e.getFieldBuilder() != null)
{
FieldBuilder fb = (FieldBuilder)e.getFieldBuilder();
if (id == Tok.T_STATIC)
{
il.Emit(OpCodes.Stsfld, fb);
}
else
{
il.Emit(OpCodes.Stfld, fb);
}
}
else
{
int index = e.getIndex();
if (id == Tok.T_PARAM)
{
if (index <= 256)
{
il.Emit(OpCodes.Starg_S, index);
}
else
{
il.Emit(OpCodes.Starg, index);
}
}
else if (id == Tok.T_AUTO || id == Tok.T_DEFCLASS)
{
il.Emit(OpCodes.Stloc, index);
}
else
{
Io.ICE("Instruction load of unknown class ("
+ e.getClassId() + ")");
}
}
}
public void EndModule()
{
try
{
String s = Io.GetOutputFilename();
appbuild.Save(s);
Console.WriteLine("Saving assembly as " + s);
}
catch (Exception e)
{
Io.ICE(e.ToString());
}
}
/*
* determine the IL static type
*/
Type ilSType(bool sign, int type)
{
if (sign)
{
switch (type)
{
case Tok.T_CHAR: return(Type.GetType("System.SByte"));
case Tok.T_SHORT: return(Type.GetType("System.Int16"));
case Tok.T_DEFTYPE: return(Type.GetType("System.Int32"));
case Tok.T_INT: return(Type.GetType("System.Int32"));
case Tok.T_LONG: return(Type.GetType("System.Int32"));
case Tok.T_FLOAT: return(Type.GetType("System.Single"));
case Tok.T_DOUBLE: return(Type.GetType("System.Double"));
case Tok.T_VOID: return(null);
default:
Io.ICE("Unhandled type " + type);
return(null);
}
}
else
{
switch (type)
{
case Tok.T_CHAR: return(Type.GetType("U1"));
case Tok.T_SHORT: return(Type.GetType("U2"));
case Tok.T_DEFTYPE: return(Type.GetType("U4"));
case Tok.T_INT: return(Type.GetType("U4"));
case Tok.T_LONG: return(Type.GetType("U4"));
default:
Io.ICE("Unhandled type " + type);
return(null);
}
}
}
void dataType(Var e)
{
int id = tok.getId();
#if DEBUG
Console.WriteLine("dataType1 token=[" + tok + "]\n");
#endif
e.setSign(Tok.T_SIGNED);
if (id == Tok.T_SIGNED || id == Tok.T_UNSIGNED)
{
e.setSign(id);
tok.scan();
id = tok.getId();
#if DEBUG
Console.WriteLine("dataType2 token=[" + tok + "]\n");
#endif
}
if (id == Tok.T_VOID || id == Tok.T_INT)
{
e.setTypeId(id);
tok.scan();
#if DEBUG
Console.WriteLine("dataType3 token=[" + tok + "]\n");
#endif
}
else if (id == Tok.T_LONG)
{
Io.ICE("Unhandled type LONG");
}
else if (id == Tok.T_CHAR)
{
Io.ICE("Unhandled type CHAR");
}
else if (id == Tok.T_FLOAT)
{
Io.ICE("Unhandled type FLOAT");
}
else if (id == Tok.T_DOUBLE)
{
Io.ICE("Unhandled type DOUBLE");
}
else
{
e.setTypeId(Tok.T_DEFTYPE);
}
}
public void Call(IAsm a)
{
Var func = a.getVar();
Object o = func.getMethodBuilder(); // get previous declared reference
if (o == null)
{
Io.ICE("No previous extern for (" + func.getName() + ")");
}
MethodBuilder mb = (MethodBuilder)o;
// il.Emit(OpCodes.Ldc_I4_0); // push 0 for the "this" ptr
// VarList x = func.getParams(); /* get any params */
// if (x.Length() > 0)
// {
// int max = x.Length();
// for (int i = 0; i < max; i++)
// {
// Var e = x.FindByIndex(i);
// genLoad(e);
// }
// }
il.Emit(OpCodes.Call, mb); // call the MethodBuilder
}
