internal void Encode(DebugInfoBlob blob)
{
blob.WriteDWORD(Timestamp);
blob.WriteDWORD(AssemblyIndex & 0x7FFFFFFF | (HasPDB ? 0x80000000 : 0));
blob.WriteBuffer(VersionInfo, 0, VersionInfoLength);
string nameWithPublicKey = Name;
if (PublicKey != null && PublicKey.Length > 0)
{
nameWithPublicKey += ", PublicKey=";
nameWithPublicKey += BitConverter.ToString(PublicKey).Replace("-", "");
}
blob.WriteString(nameWithPublicKey);
blob.AlignToDWORD();
}
private void Add_DEBUG_S_FUNC_MDTOKEN_MAP_Entry(DebugInfoBlob methodRVAToTokenMap, List <Relocation> debugRelocations, IMethodBodyNode method, uint methodDataOrOffsetToMethodData, ref uint entryCount)
{
debugRelocations.Add(new Relocation(RelocType.IMAGE_REL_BASED_ADDR32NB, checked ((int)methodRVAToTokenMap.Size()), method));
methodRVAToTokenMap.WriteDWORD(0);
methodRVAToTokenMap.WriteDWORD(methodDataOrOffsetToMethodData);
entryCount++;
IMethodBodyNodeWithFuncletSymbols funcletSymbolsNode = method as IMethodBodyNodeWithFuncletSymbols;
if (funcletSymbolsNode != null)
{
foreach (ISymbolNode funclet in funcletSymbolsNode.FuncletSymbols)
{
debugRelocations.Add(new Relocation(RelocType.IMAGE_REL_BASED_ADDR32NB, checked ((int)methodRVAToTokenMap.Size()), funclet));
methodRVAToTokenMap.WriteDWORD(0);
methodRVAToTokenMap.WriteDWORD(methodDataOrOffsetToMethodData);
entryCount++;
}
}
}
private DebugInfoBlob ConvertToDebugInfoBlob(List <SortedDictionary <uint, int> > assemblyMethods)
{
DebugInfoBlob debugInfoBlob = new DebugInfoBlob();
// version
debugInfoBlob.WriteDWORD(0);
// number of assemblies
debugInfoBlob.WriteDWORD((uint)assemblyMethods.Count);
foreach (var methods in assemblyMethods)
{
debugInfoBlob.WriteDWORD((uint)methods.Count);
foreach (var method in methods)
{
// method token
debugInfoBlob.WriteDWORD(method.Key);
// method info length , now it's 4
debugInfoBlob.WriteWORD(4);
// method slot
debugInfoBlob.WriteDWORD((uint)method.Value);
}
}
return(debugInfoBlob);
}
//
// returns the DEBUG_S_FUNC_MDTOKEN_MAP subsection as a byte array
// DEBUG_S_FUNC_MDTOKEN_MAP subsection contains method RVA to mdToken mapping
//
// contents of subsection:
// offset 0, 4 bytes: count of entries in the map
// offset 4, 8*N bytes: 4 byte RVA + 4 byte 'offset' relative to the start of 'method data'
// offset 4+8*N, * bytes: all method data packed sequentially with no padding. method data consists of
// 1 byte 'count' of generic parameters, 3 bytes of method's rid and 'count'
// variable sized ECMA formatted TypeSpec signatures for each generic parameter
//
// Compiler places the CTLToken (for a method) or the lexical funclet order (if a method has 1 or more funclets),
// which binder uses to compute the RVA.
//
// all entries are sorted by 'offset' field.
//
// 'offset' optimization: if the method has no generic parameters, we don't need to pass in a signature
// and can encode the mdToken of method in 'offset'
// We do this by setting the high bit of 'offset' and then storing rid part of
// token in last 3 bytes of 'offset'
//
internal DebugInfoBlob GetDebugMethodRVAToTokenMap(ManagedBinaryEmitter pseudoAssembly, IEnumerable <IMethodBodyNode> emittedMethods, out List <Relocation> debugRelocations)
{
DebugInfoBlob methodRVAToTokenMap = new DebugInfoBlob();
DebugInfoBlob methodDataBlob = new DebugInfoBlob();
debugRelocations = new List <Relocation>();
BlobBuilder blobBuilder = new BlobBuilder();
uint entryCount = 0;
methodRVAToTokenMap.WriteDWORD(0); // Placeholder for count of entries in map. Will be udpated later.
List <EmittedMethodWithILToken> tokenInOffsetEntries = new List <EmittedMethodWithILToken>();
foreach (IMethodBodyNode emitted in emittedMethods)
{
if (!(emitted.Method.GetTypicalMethodDefinition() is Internal.TypeSystem.Ecma.EcmaMethod))
{
continue;
}
EntityHandle methodHandle = pseudoAssembly.EmitMetadataHandleForTypeSystemEntity(emitted.Method.GetTypicalMethodDefinition());
Debug.Assert(methodHandle.Kind == HandleKind.MemberReference);
uint methodToken = (uint)MetadataTokens.GetToken(methodHandle);
uint methodTokenRid = methodToken & 0xFFFFFF;
if (!(emitted.Method.HasInstantiation || emitted.Method.OwningType.HasInstantiation))
{
tokenInOffsetEntries.Add(new EmittedMethodWithILToken(emitted, methodTokenRid));
continue;
}
uint cGenericArguments = checked ((uint)emitted.Method.Instantiation.Length + (uint)emitted.Method.OwningType.Instantiation.Length);
// Debugger format does not allow the debugging of methods that have more than 255 generic parameters (spread between the type and method instantiation)
if (cGenericArguments > 0xFF)
{
continue;
}
blobBuilder.Clear();
// write the signature for each generic parameter of class
foreach (TypeDesc instantiationType in emitted.Method.OwningType.Instantiation)
{
pseudoAssembly.EncodeSignatureForType(instantiationType, blobBuilder);
}
// write the signature for each generic parameter of the method
foreach (TypeDesc instantiationType in emitted.Method.Instantiation)
{
pseudoAssembly.EncodeSignatureForType(instantiationType, blobBuilder);
}
Add_DEBUG_S_FUNC_MDTOKEN_MAP_Entry(methodRVAToTokenMap, debugRelocations, emitted, methodDataBlob.Size(), ref entryCount);
methodDataBlob.WriteDWORD(cGenericArguments << 24 | methodTokenRid);
methodDataBlob.WriteBuffer(blobBuilder);
}
// sort tokenInOffsetEntries based on tokenInOffset
tokenInOffsetEntries.Sort();
foreach (EmittedMethodWithILToken emitted in tokenInOffsetEntries)
{
Add_DEBUG_S_FUNC_MDTOKEN_MAP_Entry(methodRVAToTokenMap, debugRelocations, emitted.EmittedMethod, emitted.IlTokenRid | 0x80000000, ref entryCount);
}
methodRVAToTokenMap.SetDWORDAtBlobIndex(0, entryCount); // // Update placeholder for count of entries in map
methodRVAToTokenMap.WriteBuffer(methodDataBlob);
return(methodRVAToTokenMap);
}
// returns the DEBUG_S_TYPE_MDTOKEN_MAP subsection as a byte array
// DEBUG_S_TYPE_MDTOKEN_MAP subsection contains type-index to mdToken mapping
//
// contents of subsection:
// offset 0, 4 bytes: count of entries in the map
// offset 4, 8*N bytes: 4 byte type-index + 4 byte 'offset' relative to the start of 'type data'
// offset 4+8*N, * bytes: ECMA formatted type signature packed sequentially with no padding
//
// 'offset' optimization: for type signatures with size<= 4-bytes
// we can store the signature in offset field such that
// offset = (1 << 31) | (sig[0] << 24 | sig[1] << 16 | sig[2] << 8 | sig[3])
// We chose this bit encoding because sig[0] holds the CorElementType whose
// highest bit is always 0 and the highest bit of offset can be used as a flag
// to indicate that it is not an offset but the signature itself.
//
// all entries are sorted by 'offset' field and so offset-based entries are arranged before other
// (raw-signature) entries (since raw-signature entries are of the form 0x80000000 | signature, and will always be
// numerically bigger than the offset)
//
private DebugInfoBlob GetDebugTypeIndexToTokenMap(ManagedBinaryEmitter pseudoAssembly, ICollection <KeyValuePair <TypeDesc, uint> > completeKnownTypes)
{
DebugInfoBlob typeDataBlob = new DebugInfoBlob();
DebugInfoBlob typeIndexToTokenMapBlob = new DebugInfoBlob();
List <KeyValuePair <uint, uint> > sigInOffsetEntries = new List <KeyValuePair <uint, uint> >();
typeIndexToTokenMapBlob.WriteDWORD(checked ((uint)completeKnownTypes.Count));
BlobBuilder blobBuilder = new BlobBuilder();
foreach (var entry in completeKnownTypes)
{
uint typeIndex = entry.Value;
blobBuilder.Clear();
pseudoAssembly.EncodeSignatureForType(entry.Key, blobBuilder);
// if signature fits in 4-bytes, store it in sigInOffsetEntries
// otherwise store it in the type-data blob
if (blobBuilder.Count <= 4)
{
uint sigInOffset = 0x80000000;
int i = 0;
// This is a slightly confusing approach, but this is how one iterates through the bytes in a blobBuilder without flattening it to a byte[]
foreach (Blob blob in blobBuilder.GetBlobs())
{
foreach (byte b in blob.GetBytes())
{
sigInOffset |= ((uint)b) << (8 * (3 - i));
i++;
}
}
// sigInOffsetEntries will be later sorted and appended to typeIndexToTokenMapBlob
sigInOffsetEntries.Add(new KeyValuePair <uint, uint>(typeIndex, sigInOffset));
}
else
{
typeIndexToTokenMapBlob.WriteDWORD(typeIndex);
typeIndexToTokenMapBlob.WriteDWORD(typeDataBlob.Size());
typeDataBlob.WriteBuffer(blobBuilder);
}
}
// sort sigInOffsetEntries based on sigInOffset
sigInOffsetEntries.Sort((KeyValuePair <uint, uint> left, KeyValuePair <uint, uint> right) =>
{
if (left.Value < right.Value)
{
return(-1);
}
if (left.Value == right.Value)
{
return(0);
}
return(1);
});
// write the sorted sigInOffsetEntries
foreach (KeyValuePair <uint, uint> sigInOffsetEntry in sigInOffsetEntries)
{
typeIndexToTokenMapBlob.WriteDWORD(sigInOffsetEntry.Key);
typeIndexToTokenMapBlob.WriteDWORD(sigInOffsetEntry.Value);
}
// add typeDataBlob to the end of m_typeIndexToTokenMapBlob
typeIndexToTokenMapBlob.WriteBuffer(typeDataBlob.ToArray());
return(typeIndexToTokenMapBlob);
}
