public TestInstruction(x86Assembler parentAssembler, Label targetLabel) : base(parentAssembler)
{
if (!targetLabel.Marked)
{
targetLabel.PreMarkingReferencedInstructions.Add(this);
}
target = targetLabel;
}
protected x86Instruction(x86Assembler parentAssembler, bool addToParent = true)
{
// This is so that a label doesn't get added when it's created.
if (addToParent)
{
parentAssembler.Instructions.Add(this);
}
ParentAssembler = parentAssembler;
}
public Label(x86Assembler parentAssembler, string name = "", bool global = false) : base(parentAssembler, false)
{
this.Name = name;
this.Global = global;
}
public Ret(x86Assembler parentAssembler, ushort popSize = 0, x86Segment seg = x86Segment.CS) : base(parentAssembler)
{
PopSize = popSize;
Segment = seg;
}
public static unsafe void Main(string[] args)
{
x86Assembler a = new x86Assembler();
#if UseStackFrame
const x86Register argBaseRegister = Reg.EBP;
const int arg1Offset = 8;
const int arg2Offset = 12;
new x86.Push(a, Reg.EBP, 4);
new x86.Mov (a, Reg.EBP, Reg.ESP, 4);
#else
const x86Register argBaseRegister = Reg.ESP;
const int arg1Offset = 4;
const int arg2Offset = 8;
#endif
#region DivFix
new x86.Mov(a, Reg.EAX, argBaseRegister, arg1Offset, 4);
new x86.Mov(a, Reg.EDX, argBaseRegister, arg2Offset, 4);
#endregion
#region MulFix
//new x86.Mov(a, Reg.EAX, argBaseRegister, arg1Offset, 4);
//new x86.Mov(a, Reg.EDX, argBaseRegister, arg2Offset, 4);
//new x86.IMul(a, Reg.EDX, 4);
//new x86.Mov (a, Reg.ECX, Reg.EDX, 4);
//new x86.SAR (a, Reg.ECX, 31u, 4);
//new x86.Add (a, Reg.ECX, 0x20, 4);
//new x86.Add (a, Reg.EAX, Reg.ECX, 4);
//new x86.Adc (a, Reg.EDX, 0u, 4);
//new x86.SHRD(a, Reg.EAX, Reg.EDX, 6, 4);
//new x86.Add (a, Reg.EAX, Reg.EDX, 4);
#endregion
#region CE
//new x86.Mov(a, Reg.EBX, Reg.EBP, 8, 4);
//new x86.Mov(a, Reg.ECX, Reg.EBP, 12, 4);
//new x86.XOr(a, Reg.EAX, Reg.EAX, 4);
//new x86.Cmp(a, Reg.ECX, Reg.EBX, 4);
//new x86.SetE(a, Reg.EAX);
#endregion
#if UseStackFrame
new x86.Leave(a);
#endif
new x86.Ret(a);
StreamWriter rtr = new StreamWriter("assemblerOut.txt", false);
for (int i = 0; i < a.Instructions.Count; i++)
{
rtr.WriteLine(a.Instructions[i].ToString());
}
if (File.Exists("assemblerOut.bin"))
File.Delete("assemblerOut.bin");
FileStream strm = new FileStream("assemblerOut.bin", FileMode.OpenOrCreate, FileAccess.ReadWrite);
a.Emit(strm);
strm.Flush();
strm.Position = 0;
byte[] barr = new byte[strm.Length];
strm.Read(barr, 0, (int)strm.Length);
IntPtr alloced = (IntPtr)ExecutableAllocation.AllocateExecutableMemory((IntPtr)barr.Length);
Marshal.Copy(barr, 0, alloced, barr.Length);
strm.Close();
var del = TrampolineGenerator.GenerateMethodCall<uint, F26Dot6, F26Dot6>(CallingConvention.Cdecl);
const uint ValA = 64;
const uint ValB = 32;
const uint IterCount = 1000000;
F26Dot6 valFA = F26Dot6.FromLiteral((int)ValA);
F26Dot6 valFB = F26Dot6.FromLiteral((int)ValB);
F26Dot6 val3 = 0;
uint val4 = 0;
Stopwatch s = new Stopwatch();
s.Start();
for (uint i = 0; i < IterCount; i++)
{
// Yikes... Delegates really are slow...
// 770MS for 1 million calls via delegates
// vs.
// 20MS for 1 million calls via a static indirect call (17MS of that is pure interop)
//val4 = del(alloced, valFA, valFB);
val4 = Orvid.Trampoline.UnsafeTrampolines.Call(alloced, ValA, ValB);
}
s.Stop();
Console.WriteLine("ASM: Took a total of " + s.ElapsedMilliseconds.ToString() + "MS to make " + IterCount.ToString() + " calls (" + ((double)s.ElapsedMilliseconds / (double)IterCount) + "MS / call) ");
//val4++;
s.Restart();
s.Start();
for (uint i = 0; i < IterCount; i++)
{
// 5MS for 100k calls.
val3 = valFA / valFB;
}
s.Stop();
Console.WriteLine("Managed: Took a total of " + s.ElapsedMilliseconds.ToString() + "MS to make " + IterCount.ToString() + " calls (" + ((double)s.ElapsedMilliseconds / (double)IterCount) + "MS / call)");
F26Dot6 valB = F26Dot6.Div_NoRound(valFA, valFB);
uint val2 = del(alloced, valFA, valFB);
F26Dot6 val = F26Dot6.FromLiteral((int)val2);
//rtr.WriteLine("Value returned: " + val.ToString());
Console.WriteLine("Value2 Returned: " + val.ToString());
Console.WriteLine("Value2 (as an int) Returned: " + val2.ToString());
Console.WriteLine("Value4 Returned: " + F26Dot6.FromLiteral((int)val4).ToString());
Console.WriteLine("Value4 (as an int) Returned: " + val4.ToString());
Console.WriteLine("Value3 Returned: " + val3.ToString());
Console.WriteLine("Value3 (as an int) Returned: " + val3.value.ToString());
Console.WriteLine("ValueB Returned: " + valB.ToString());
Console.WriteLine("ValueB (as an int) Returned: " + valB.value.ToString());
rtr.Close();
}
public Nop(x86Assembler parentAssembler) : base(parentAssembler) { }
public static string NameMemIndex(x86Assembler a, x86Register baseRegister, int displacement, x86Register indexRegister, x86IndexShift shift, x86Segment segment)
{
string ret = "";
bool form2 = baseRegister == x86Register.None;
if (form2)
{
ret += NameSegment(segment) + ":0x" + displacement.ToString("X").PadLeft(8, '0');
}
ret += "[" + NameRegister(indexRegister, 4);
switch (shift)
{
case x86IndexShift.Mul1:
break;
case x86IndexShift.Mul2:
ret += " * 2";
break;
case x86IndexShift.Mul4:
ret += " * 4";
break;
case x86IndexShift.Mul8:
ret += " * 8";
break;
default:
throw new Exception("Invalid index shift!");
}
if (baseRegister != x86Register.None)
{
ret += " + " + NameRegister(baseRegister, 4);
}
if (displacement != 0 && !form2)
{
ret += " " + (displacement < 0 ? "-" : "+") + " " + (displacement < 0 ? -displacement : displacement).ToString();
}
return ret + "]";
}
public static string NameMem(x86Assembler a, uint address, x86Segment segment)
{
// Assembler gets passed in here because we will eventually do symbol lookup.
return "[" + NameSegment(segment) + ":0x" + address.ToString("X").PadLeft(8, '0') + "]";
}
public static string NameDisplacement(x86Assembler a, x86Instruction baseInstr, int displacement)
{
return "[rel " + (displacement < 0 ? " - " : " + ") + "0x" + (displacement & int.MaxValue).ToString("X") + "]";
}