Mosa.Compiler.Framework.Context.SetInstruction C# (CSharp) Méthode

        public void SetInstruction(BaseInstruction instruction, InstructionSize size, Operand result, Operand operand1, Operand operand2, Operand operand3)
        {
            Node.SetInstruction(instruction, size, result, operand1, operand2, operand3);
        }

        /// <summary>
        /// Replaces the intrinsic call site
        /// </summary>
        /// <param name="context">The context.</param>
        /// <param name="typeSystem">The type system.</param>
        void IIntrinsicPlatformMethod.ReplaceIntrinsicCall(Context context, ITypeSystem typeSystem, IList<RuntimeParameter> parameters)
        {
            var result = context.Result;
            var op1 = context.Operand1;
            var op2 = context.Operand2;
            var constant = Operand.CreateConstant(BuiltInSigType.IntPtr, parameters.Count * 4);

            var eax = Operand.CreateCPURegister(BuiltInSigType.IntPtr, GeneralPurposeRegister.EAX); // FIXME - need access to virtual register allocator
            var edx = Operand.CreateCPURegister(BuiltInSigType.IntPtr, GeneralPurposeRegister.EDX); // FIXME - need access to virtual register allocator
            var esp = Operand.CreateCPURegister(BuiltInSigType.IntPtr, GeneralPurposeRegister.ESP); // FIXME - need access to virtual register allocator
            var ebp = Operand.CreateCPURegister(BuiltInSigType.IntPtr, GeneralPurposeRegister.EBP); // FIXME - need access to virtual register allocator
            context.SetInstruction(X86.Sub, esp, constant);
            context.AppendInstruction(X86.Mov, edx, esp);

            var size = parameters.Count * 4 + 4;
            foreach (var parameter in parameters)
            {
                context.AppendInstruction(X86.Mov, Operand.CreateMemoryAddress(BuiltInSigType.IntPtr, edx, new IntPtr(size - 4)), Operand.CreateMemoryAddress(BuiltInSigType.IntPtr, ebp, new IntPtr(size + 4)));
                size -= 4;
            }
            context.AppendInstruction(X86.Mov, Operand.CreateMemoryAddress(BuiltInSigType.IntPtr, edx, new IntPtr(size - 4)), op1);

            context.AppendInstruction(X86.Mov, eax, op2);
            context.AppendInstruction(X86.Call, null, eax);
            context.AppendInstruction(X86.Add, esp, constant);
            context.AppendInstruction(X86.Mov, result, Operand.CreateCPURegister(result.Type, GeneralPurposeRegister.EAX)); // FIXME - need access to virtual register allocator
        }