public void TestDynamicMethodEmitCalliBlittable()
{
int a = 1, b = 1, result = 2;
Type returnType = typeof(int);
var dynamicMethod = new DynamicMethod("F", returnType, new Type[] { typeof(IntPtr), typeof(int), typeof(int) });
ILGenerator il = dynamicMethod.GetILGenerator();
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Ldarg_2);
il.Emit(OpCodes.Ldarg_0);
il.EmitCalli(OpCodes.Calli, CallingConvention.StdCall, returnType, new Type[] { typeof(int), typeof(int) });
il.Emit(OpCodes.Ret);
var del = new Int32SumStdCall(Int32Sum);
IntPtr funcPtr = Marshal.GetFunctionPointerForDelegate(del);
object resultValue = dynamicMethod
.Invoke(null, new object[] { funcPtr, a, b });
GC.KeepAlive(del);
Assert.IsType(returnType, resultValue);
Assert.Equal(result, resultValue);
}
public void TestEmitCalliBlittable()
{
int a = 1, b = 1, result = 2;
ModuleBuilder moduleBuilder = Helpers.DynamicModule();
TypeBuilder typeBuilder = moduleBuilder.DefineType("T", TypeAttributes.Public);
Type returnType = typeof(int);
MethodBuilder methodBuilder = typeBuilder.DefineMethod("F",
MethodAttributes.Public | MethodAttributes.Static, returnType, new Type[] { typeof(IntPtr), typeof(int), typeof(int) });
methodBuilder.SetImplementationFlags(MethodImplAttributes.NoInlining);
ILGenerator il = methodBuilder.GetILGenerator();
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Ldarg_2);
il.Emit(OpCodes.Ldarg_0);
il.EmitCalli(OpCodes.Calli, CallingConvention.StdCall, returnType, new Type[] { typeof(int), typeof(int) });
il.Emit(OpCodes.Ret);
Type dynamicType = typeBuilder.CreateType();
var del = new Int32SumStdCall(Int32Sum);
IntPtr funcPtr = Marshal.GetFunctionPointerForDelegate(del);
object resultValue = dynamicType
.GetMethod("F", BindingFlags.Public | BindingFlags.Static)
.Invoke(null, new object[] { funcPtr, a, b });
GC.KeepAlive(del);
Assert.IsType(returnType, resultValue);
Assert.Equal(result, resultValue);
}