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//-----------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation. All Rights Reserved.
//
//-----------------------------------------------------------------------------
using System;
using System.IO;
using Microsoft.Cci;
using Microsoft.Cci.MetadataReader;
using Microsoft.Cci.MutableCodeModel;
using System.Collections.Generic;
using Microsoft.Cci.Contracts;
using Microsoft.Cci.ILToCodeModel;
using Microsoft.Cci.MutableContracts;
using Bpl = Microsoft.Boogie;
using System.Diagnostics.Contracts;
namespace BytecodeTranslator {
class Options : OptionParsing {
[OptionDescription("The names of the assemblies to use as input", ShortForm = "a")]
public List<string> assemblies = null;
[OptionDescription("Search paths for assembly dependencies.", ShortForm = "lib")]
public List<string> libpaths = new List<string>();
public enum HeapRepresentation { splitFields, twoDInt, twoDBox, general }
[OptionDescription("Heap representation to use", ShortForm = "heap")]
public HeapRepresentation heapRepresentation = HeapRepresentation.general;
[OptionDescription("Translate using whole-program assumptions", ShortForm = "whole")]
public bool wholeProgram = false;
}
public class BCT {
public static IMetadataHost Host;
static int Main(string[] args)
{
int result = 0;
#region Parse options
var options = new Options();
options.Parse(args);
if (options.HasErrors) {
if (options.HelpRequested)
options.PrintOptions("");
return 1;
}
#endregion
var assemblyNames = options.assemblies;
if (assemblyNames == null || assemblyNames.Count == 0) {
assemblyNames = new List<string>();
foreach (var g in options.GeneralArguments) {
assemblyNames.Add(g);
}
}
try {
HeapFactory heap;
switch (options.heapRepresentation) {
case Options.HeapRepresentation.splitFields:
heap = new SplitFieldsHeap();
break;
case Options.HeapRepresentation.twoDInt:
heap = new TwoDIntHeap();
break;
case Options.HeapRepresentation.twoDBox:
heap = new TwoDBoxHeap();
break;
case Options.HeapRepresentation.general:
heap = new GeneralHeap();
break;
default:
Console.WriteLine("Unknown setting for /heap");
return 1;
}
result = TranslateAssembly(assemblyNames, heap, options.libpaths, options.wholeProgram);
} catch (Exception e) { // swallow everything and just return an error code
Console.WriteLine("The byte-code translator failed with uncaught exception: {0}", e.Message);
Console.WriteLine("Stack trace: {0}", e.StackTrace);
return -1;
}
return result;
}
public static int TranslateAssembly(List<string> assemblyNames, HeapFactory heapFactory, List<string>/*?*/ libPaths, bool wholeProgram) {
Contract.Requires(assemblyNames != null);
Contract.Requires(heapFactory != null);
var host = new CodeContractAwareHostEnvironment(libPaths != null ? libPaths : IteratorHelper.GetEmptyEnumerable<string>(), true, true);
Host = host;
var modules = new List<Tuple<IModule,PdbReader/*?*/>>();
foreach (var a in assemblyNames) {
var module = host.LoadUnitFrom(a) as IModule;
if (module == null || module == Dummy.Module || module == Dummy.Assembly) {
Console.WriteLine(a + " is not a PE file containing a CLR module or assembly, or an error occurred when loading it.");
Console.WriteLine("Skipping it, continuing with other input assemblies");
}
PdbReader/*?*/ pdbReader = null;
string pdbFile = Path.ChangeExtension(module.Location, "pdb");
if (File.Exists(pdbFile)) {
Stream pdbStream = File.OpenRead(pdbFile);
pdbReader = new PdbReader(pdbStream, host);
}
module = Decompiler.GetCodeModelFromMetadataModel(host, module, pdbReader) as IModule;
modules.Add(Tuple.Create(module, pdbReader));
}
if (modules.Count == 0) {
Console.WriteLine("No input assemblies to translate.");
return -1;
}
var primaryModule = modules[0].Item1;
TraverserFactory traverserFactory;
if (wholeProgram)
traverserFactory = new WholeProgram();
else
traverserFactory = new CLRSemantics();
var sink = new Sink(host, traverserFactory, heapFactory);
TranslationHelper.tmpVarCounter = 0;
foreach (var tup in modules) {
var module = tup.Item1;
var pdbReader = tup.Item2;
IAssembly/*?*/ assembly = null;
MetadataTraverser translator = traverserFactory.MakeMetadataTraverser(sink, host.GetContractExtractor(module.ModuleIdentity), pdbReader);
assembly = module as IAssembly;
if (assembly != null)
translator.Visit(assembly);
else
translator.Visit(module);
}
Microsoft.Boogie.TokenTextWriter writer = new Microsoft.Boogie.TokenTextWriter(primaryModule.Name + ".bpl");
Prelude.Emit(writer);
sink.TranslatedProgram.Emit(writer);
writer.Close();
return 0; // success
}
private static string NameUpToFirstPeriod(string name) {
var i = name.IndexOf('.');
if (i == -1)
return name;
else
return name.Substring(0, i);
}
}
}
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