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 WordData : Word { 29*0957b409SSimon J. Gerraty 30*0957b409SSimon J. Gerraty ConstData blob; 31*0957b409SSimon J. Gerraty string baseBlobName; 32*0957b409SSimon J. Gerraty int offset; 33*0957b409SSimon J. Gerraty bool ongoingResolution; 34*0957b409SSimon J. Gerraty WordData(T0Comp owner, string name, ConstData blob, int offset)35*0957b409SSimon J. Gerraty internal WordData(T0Comp owner, string name, 36*0957b409SSimon J. Gerraty ConstData blob, int offset) 37*0957b409SSimon J. Gerraty : base(owner, name) 38*0957b409SSimon J. Gerraty { 39*0957b409SSimon J. Gerraty this.blob = blob; 40*0957b409SSimon J. Gerraty this.offset = offset; 41*0957b409SSimon J. Gerraty StackEffect = new SType(0, 1); 42*0957b409SSimon J. Gerraty } 43*0957b409SSimon J. Gerraty WordData(T0Comp owner, string name, string baseBlobName, int offset)44*0957b409SSimon J. Gerraty internal WordData(T0Comp owner, string name, 45*0957b409SSimon J. Gerraty string baseBlobName, int offset) 46*0957b409SSimon J. Gerraty : base(owner, name) 47*0957b409SSimon J. Gerraty { 48*0957b409SSimon J. Gerraty this.baseBlobName = baseBlobName; 49*0957b409SSimon J. Gerraty this.offset = offset; 50*0957b409SSimon J. Gerraty StackEffect = new SType(0, 1); 51*0957b409SSimon J. Gerraty } 52*0957b409SSimon J. Gerraty Resolve()53*0957b409SSimon J. Gerraty internal override void Resolve() 54*0957b409SSimon J. Gerraty { 55*0957b409SSimon J. Gerraty if (blob != null) { 56*0957b409SSimon J. Gerraty return; 57*0957b409SSimon J. Gerraty } 58*0957b409SSimon J. Gerraty if (ongoingResolution) { 59*0957b409SSimon J. Gerraty throw new Exception(String.Format( 60*0957b409SSimon J. Gerraty "circular reference in blobs ({0})", Name)); 61*0957b409SSimon J. Gerraty } 62*0957b409SSimon J. Gerraty ongoingResolution = true; 63*0957b409SSimon J. Gerraty WordData wd = TC.Lookup(baseBlobName) as WordData; 64*0957b409SSimon J. Gerraty if (wd == null) { 65*0957b409SSimon J. Gerraty throw new Exception(String.Format( 66*0957b409SSimon J. Gerraty "data word '{0}' based on non-data word '{1}'", 67*0957b409SSimon J. Gerraty Name, baseBlobName)); 68*0957b409SSimon J. Gerraty } 69*0957b409SSimon J. Gerraty wd.Resolve(); 70*0957b409SSimon J. Gerraty blob = wd.blob; 71*0957b409SSimon J. Gerraty offset += wd.offset; 72*0957b409SSimon J. Gerraty ongoingResolution = false; 73*0957b409SSimon J. Gerraty } 74*0957b409SSimon J. Gerraty Run(CPU cpu)75*0957b409SSimon J. Gerraty internal override void Run(CPU cpu) 76*0957b409SSimon J. Gerraty { 77*0957b409SSimon J. Gerraty Resolve(); 78*0957b409SSimon J. Gerraty cpu.Push(new TValue(offset, new TPointerBlob(blob))); 79*0957b409SSimon J. Gerraty } 80*0957b409SSimon J. Gerraty GetDataBlocks()81*0957b409SSimon J. Gerraty internal override List<ConstData> GetDataBlocks() 82*0957b409SSimon J. Gerraty { 83*0957b409SSimon J. Gerraty Resolve(); 84*0957b409SSimon J. Gerraty List<ConstData> r = new List<ConstData>(); 85*0957b409SSimon J. Gerraty r.Add(blob); 86*0957b409SSimon J. Gerraty return r; 87*0957b409SSimon J. Gerraty } 88*0957b409SSimon J. Gerraty GenerateCodeElements(List<CodeElement> dst)89*0957b409SSimon J. Gerraty internal override void GenerateCodeElements(List<CodeElement> dst) 90*0957b409SSimon J. Gerraty { 91*0957b409SSimon J. Gerraty Resolve(); 92*0957b409SSimon J. Gerraty dst.Add(new CodeElementUInt(0)); 93*0957b409SSimon J. Gerraty dst.Add(new CodeElementUIntInt(1, blob.Address + offset)); 94*0957b409SSimon J. Gerraty dst.Add(new CodeElementUInt(0)); 95*0957b409SSimon J. Gerraty } 96*0957b409SSimon J. Gerraty } 97