Esempio n. 1
0
        void DoIt()
        {
            var test1 = new OpCode(
                "test1", 0xf0, 0x00, OperandType.InlineNone, FlowControl.Next, StackBehaviour.Push0, StackBehaviour.Pop0);
            var test2 = new OpCode(
                "test2", 0xf0, 0x01, OperandType.InlineBrTarget, FlowControl.Branch, StackBehaviour.Push0, StackBehaviour.Pop0);
            var test3 = new OpCode(
                "test3", 0xf0, 0x02, OperandType.InlineString, FlowControl.Next, StackBehaviour.Push1, StackBehaviour.Pop0);

            var ctx = new ModuleContext();

            ctx.RegisterExperimentalOpCode(test1);
            ctx.RegisterExperimentalOpCode(test2);
            ctx.RegisterExperimentalOpCode(test3);

            var mod  = ModuleDefMD.Load(typeof(Example7).Module, ctx);
            var body = mod.Types.Single(x => x.Name == nameof(Example7)).Methods.Single(x => x.Name == nameof(CustomCil)).Body;

            Console.WriteLine("Original:");
            foreach (var insn in body.Instructions)
            {
                Console.WriteLine("{0} (0x{1:X4})", insn, insn.OpCode.Value);
            }
            Console.WriteLine();

            var code = body.Instructions;

            code.Clear();

            var label = OpCodes.Nop.ToInstruction();

            code.Add(test1.ToInstruction());
            code.Add(OpCodes.Nop.ToInstruction());
            code.Add(label);
            code.Add(OpCodes.Ret.ToInstruction());
            code.Add(test2.ToInstruction(label));
            code.Add(test3.ToInstruction("foo"));

            Console.WriteLine("Modified:");
            foreach (var insn in body.Instructions)
            {
                Console.WriteLine("{0} (0x{1:X4})", insn, insn.OpCode.Value);
            }
            Console.WriteLine();

            using var stream = new MemoryStream();
            mod.Write(stream);

            stream.Position = 0;

            mod  = ModuleDefMD.Load(stream, ctx);
            body = mod.Types.Single(x => x.Name == nameof(Example7)).Methods.Single(x => x.Name == nameof(CustomCil)).Body;

            Console.WriteLine("Roundtripped:");
            foreach (var insn in body.Instructions)
            {
                Console.WriteLine("{0} (0x{1:X4})", insn, insn.OpCode.Value);
            }
            Console.WriteLine();
        }