1*0957b409SSimon J. Gerraty /* 2*0957b409SSimon J. Gerraty * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org> 3*0957b409SSimon J. Gerraty * 4*0957b409SSimon J. Gerraty * Permission is hereby granted, free of charge, to any person obtaining 5*0957b409SSimon J. Gerraty * a copy of this software and associated documentation files (the 6*0957b409SSimon J. Gerraty * "Software"), to deal in the Software without restriction, including 7*0957b409SSimon J. Gerraty * without limitation the rights to use, copy, modify, merge, publish, 8*0957b409SSimon J. Gerraty * distribute, sublicense, and/or sell copies of the Software, and to 9*0957b409SSimon J. Gerraty * permit persons to whom the Software is furnished to do so, subject to 10*0957b409SSimon J. Gerraty * the following conditions: 11*0957b409SSimon J. Gerraty * 12*0957b409SSimon J. Gerraty * The above copyright notice and this permission notice shall be 13*0957b409SSimon J. Gerraty * included in all copies or substantial portions of the Software. 14*0957b409SSimon J. Gerraty * 15*0957b409SSimon J. Gerraty * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16*0957b409SSimon J. Gerraty * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17*0957b409SSimon J. Gerraty * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18*0957b409SSimon J. Gerraty * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 19*0957b409SSimon J. Gerraty * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 20*0957b409SSimon J. Gerraty * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21*0957b409SSimon J. Gerraty * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22*0957b409SSimon J. Gerraty * SOFTWARE. 23*0957b409SSimon J. Gerraty */ 24*0957b409SSimon J. Gerraty 25*0957b409SSimon J. Gerraty using System; 26*0957b409SSimon J. Gerraty using System.Collections.Generic; 27*0957b409SSimon J. Gerraty 28*0957b409SSimon J. Gerraty class OpcodeConst : Opcode { 29*0957b409SSimon J. Gerraty 30*0957b409SSimon J. Gerraty TValue val; 31*0957b409SSimon J. Gerraty OpcodeConst(TValue val)32*0957b409SSimon J. Gerraty internal OpcodeConst(TValue val) 33*0957b409SSimon J. Gerraty { 34*0957b409SSimon J. Gerraty this.val = val; 35*0957b409SSimon J. Gerraty } 36*0957b409SSimon J. Gerraty Run(CPU cpu)37*0957b409SSimon J. Gerraty internal override void Run(CPU cpu) 38*0957b409SSimon J. Gerraty { 39*0957b409SSimon J. Gerraty cpu.Push(val); 40*0957b409SSimon J. Gerraty } 41*0957b409SSimon J. Gerraty GetReference(T0Comp ctx)42*0957b409SSimon J. Gerraty internal override Word GetReference(T0Comp ctx) 43*0957b409SSimon J. Gerraty { 44*0957b409SSimon J. Gerraty TPointerXT xt = val.ptr as TPointerXT; 45*0957b409SSimon J. Gerraty if (xt == null) { 46*0957b409SSimon J. Gerraty return null; 47*0957b409SSimon J. Gerraty } 48*0957b409SSimon J. Gerraty xt.Resolve(ctx); 49*0957b409SSimon J. Gerraty return xt.Target; 50*0957b409SSimon J. Gerraty } 51*0957b409SSimon J. Gerraty GetDataBlock(T0Comp ctx)52*0957b409SSimon J. Gerraty internal override ConstData GetDataBlock(T0Comp ctx) 53*0957b409SSimon J. Gerraty { 54*0957b409SSimon J. Gerraty TPointerBlob bp = val.ptr as TPointerBlob; 55*0957b409SSimon J. Gerraty return bp == null ? null : bp.Blob; 56*0957b409SSimon J. Gerraty } 57*0957b409SSimon J. Gerraty ToCodeElement()58*0957b409SSimon J. Gerraty internal override CodeElement ToCodeElement() 59*0957b409SSimon J. Gerraty { 60*0957b409SSimon J. Gerraty if (val.ptr == null) { 61*0957b409SSimon J. Gerraty return new CodeElementUIntInt(1, val.Int); 62*0957b409SSimon J. Gerraty } 63*0957b409SSimon J. Gerraty TPointerXT xt = val.ptr as TPointerXT; 64*0957b409SSimon J. Gerraty if (xt != null) { 65*0957b409SSimon J. Gerraty if (val.x != 0) { 66*0957b409SSimon J. Gerraty throw new Exception( 67*0957b409SSimon J. Gerraty "Cannot compile XT: non-zero offset"); 68*0957b409SSimon J. Gerraty } 69*0957b409SSimon J. Gerraty return new CodeElementUIntInt(1, xt.Target.Slot); 70*0957b409SSimon J. Gerraty } 71*0957b409SSimon J. Gerraty TPointerBlob bp = val.ptr as TPointerBlob; 72*0957b409SSimon J. Gerraty if (bp != null) { 73*0957b409SSimon J. Gerraty return new CodeElementUIntInt(1, 74*0957b409SSimon J. Gerraty val.x + bp.Blob.Address); 75*0957b409SSimon J. Gerraty } 76*0957b409SSimon J. Gerraty TPointerExpr cx = val.ptr as TPointerExpr; 77*0957b409SSimon J. Gerraty if (cx != null) { 78*0957b409SSimon J. Gerraty return new CodeElementUIntExpr(1, cx, val.x); 79*0957b409SSimon J. Gerraty } 80*0957b409SSimon J. Gerraty throw new Exception(String.Format( 81*0957b409SSimon J. Gerraty "Cannot embed constant (type = {0})", 82*0957b409SSimon J. Gerraty val.ptr.GetType().FullName)); 83*0957b409SSimon J. Gerraty } 84*0957b409SSimon J. Gerraty 85*0957b409SSimon J. Gerraty internal override int StackAction { 86*0957b409SSimon J. Gerraty get { 87*0957b409SSimon J. Gerraty return 1; 88*0957b409SSimon J. Gerraty } 89*0957b409SSimon J. Gerraty } 90*0957b409SSimon J. Gerraty ToString()91*0957b409SSimon J. Gerraty public override string ToString() 92*0957b409SSimon J. Gerraty { 93*0957b409SSimon J. Gerraty return "const " + val.ToString(); 94*0957b409SSimon J. Gerraty } 95*0957b409SSimon J. Gerraty } 96