/// <summary>
/// Try to look up non-gc/gc static effective field bases for a non-generic non-dynamic type.
/// </summary>
/// <param name="declaringTypeHandle">Declaring type for the method</param>
/// <param name="fieldAccessKind">type of static base to find</param>
/// <param name="staticsRegionAddress">Output - statics region address info</param>
/// <returns>true when found, false otherwise</returns>
private static unsafe bool TryGetStaticFieldBaseFromFieldAccessMap(
RuntimeTypeHandle declaringTypeHandle,
FieldAccessStaticDataKind fieldAccessKind,
out IntPtr staticsRegionAddress)
{
staticsRegionAddress = IntPtr.Zero;
byte* comparableStaticRegionAddress = null;
CanonicallyEquivalentEntryLocator canonWrapper = new CanonicallyEquivalentEntryLocator(declaringTypeHandle, CanonicalFormKind.Specific);
// This function only finds results for non-dynamic, non-generic types
if (RuntimeAugments.IsDynamicType(declaringTypeHandle) || RuntimeAugments.IsGenericType(declaringTypeHandle))
return false;
foreach (IntPtr mappingTableModule in ModuleList.Enumerate(RuntimeAugments.GetModuleFromTypeHandle(declaringTypeHandle)))
{
NativeReader fieldMapReader;
if (!TryGetNativeReaderForBlob(mappingTableModule, ReflectionMapBlob.FieldAccessMap, out fieldMapReader))
continue;
NativeParser fieldMapParser = new NativeParser(fieldMapReader, 0);
NativeHashtable fieldHashtable = new NativeHashtable(fieldMapParser);
ExternalReferencesTable externalReferences = default(ExternalReferencesTable);
if (!externalReferences.InitializeCommonFixupsTable(mappingTableModule))
{
continue;
}
var lookup = fieldHashtable.Lookup(canonWrapper.LookupHashCode);
NativeParser entryParser;
while (!(entryParser = lookup.GetNext()).IsNull)
{
// Grammar of a hash table entry:
// Flags + DeclaringType + MdHandle or Name + Cookie or Ordinal or Offset
FieldTableFlags entryFlags = (FieldTableFlags)entryParser.GetUnsigned();
Debug.Assert(!entryFlags.HasFlag(FieldTableFlags.IsUniversalCanonicalEntry));
if (!entryFlags.HasFlag(FieldTableFlags.Static))
continue;
switch (fieldAccessKind)
{
case FieldAccessStaticDataKind.NonGC:
if (entryFlags.HasFlag(FieldTableFlags.IsGcSection))
continue;
if (entryFlags.HasFlag(FieldTableFlags.ThreadStatic))
continue;
break;
case FieldAccessStaticDataKind.GC:
if (!entryFlags.HasFlag(FieldTableFlags.IsGcSection))
continue;
if (entryFlags.HasFlag(FieldTableFlags.ThreadStatic))
continue;
break;
case FieldAccessStaticDataKind.TLS:
default:
// TODO! TLS statics
Environment.FailFast("TLS static field access not yet supported");
return false;
}
RuntimeTypeHandle entryDeclaringTypeHandle = externalReferences.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
if (!entryDeclaringTypeHandle.Equals(declaringTypeHandle))
continue;
if (entryFlags.HasFlag(FieldTableFlags.HasMetadataHandle))
{
// skip metadata handle
entryParser.GetUnsigned();
}
else
{
// skip field name
entryParser.SkipString();
}
int cookieOrOffsetOrOrdinal = (int)entryParser.GetUnsigned();
int fieldOffset = (int)externalReferences.GetRvaFromIndex((uint)cookieOrOffsetOrOrdinal);
IntPtr fieldAddress = RvaToNonGenericStaticFieldAddress(
mappingTableModule, fieldOffset);
if ((comparableStaticRegionAddress == null) || (comparableStaticRegionAddress > fieldAddress.ToPointer()))
{
comparableStaticRegionAddress = (byte*)fieldAddress.ToPointer();
}
}
// Static fields for a type can only be found in at most one module
if (comparableStaticRegionAddress != null)
break;
}
if (comparableStaticRegionAddress != null)
{
staticsRegionAddress = new IntPtr(comparableStaticRegionAddress);
return true;
}
else
{
return false;
}
}
/// <summary>
/// Try to look up non-gc/gc static effective field bases for a non-generic non-dynamic type.
/// </summary>
/// <param name="declaringTypeHandle">Declaring type for the method</param>
/// <param name="fieldAccessKind">type of static base to find</param>
/// <param name="staticsRegionAddress">Output - statics region address info</param>
/// <returns>true when found, false otherwise</returns>
private unsafe static bool TryGetStaticFieldBaseFromFieldAccessMap(
RuntimeTypeHandle declaringTypeHandle,
FieldAccessStaticDataKind fieldAccessKind,
out IntPtr staticsRegionAddress)
{
staticsRegionAddress = IntPtr.Zero;
byte *comparableStaticRegionAddress = null;
CanonicallyEquivalentEntryLocator canonWrapper = new CanonicallyEquivalentEntryLocator(declaringTypeHandle, CanonicalFormKind.Specific);
// This function only finds results for non-dynamic, non-generic types
if (RuntimeAugments.IsDynamicType(declaringTypeHandle) || RuntimeAugments.IsGenericType(declaringTypeHandle))
{
return(false);
}
foreach (IntPtr mappingTableModule in ModuleList.Enumerate(RuntimeAugments.GetModuleFromTypeHandle(declaringTypeHandle)))
{
NativeReader fieldMapReader;
if (!TryGetNativeReaderForBlob(mappingTableModule, ReflectionMapBlob.FieldAccessMap, out fieldMapReader))
{
continue;
}
NativeParser fieldMapParser = new NativeParser(fieldMapReader, 0);
NativeHashtable fieldHashtable = new NativeHashtable(fieldMapParser);
ExternalReferencesTable externalReferences = default(ExternalReferencesTable);
if (!externalReferences.InitializeCommonFixupsTable(mappingTableModule))
{
continue;
}
var lookup = fieldHashtable.Lookup(canonWrapper.LookupHashCode);
NativeParser entryParser;
while (!(entryParser = lookup.GetNext()).IsNull)
{
// Grammar of a hash table entry:
// Flags + DeclaringType + MdHandle or Name + Cookie or Ordinal or Offset
FieldTableFlags entryFlags = (FieldTableFlags)entryParser.GetUnsigned();
Debug.Assert(!entryFlags.HasFlag(FieldTableFlags.IsUniversalCanonicalEntry));
if (!entryFlags.HasFlag(FieldTableFlags.Static))
{
continue;
}
switch (fieldAccessKind)
{
case FieldAccessStaticDataKind.NonGC:
if (entryFlags.HasFlag(FieldTableFlags.IsGcSection))
{
continue;
}
if (entryFlags.HasFlag(FieldTableFlags.ThreadStatic))
{
continue;
}
break;
case FieldAccessStaticDataKind.GC:
if (!entryFlags.HasFlag(FieldTableFlags.IsGcSection))
{
continue;
}
if (entryFlags.HasFlag(FieldTableFlags.ThreadStatic))
{
continue;
}
break;
case FieldAccessStaticDataKind.TLS:
default:
// TODO! TLS statics
Environment.FailFast("TLS static field access not yet supported");
return(false);
}
RuntimeTypeHandle entryDeclaringTypeHandle = externalReferences.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
if (!entryDeclaringTypeHandle.Equals(declaringTypeHandle))
{
continue;
}
if (entryFlags.HasFlag(FieldTableFlags.HasMetadataHandle))
{
// skip metadata handle
entryParser.GetUnsigned();
}
else
{
// skip field name
entryParser.SkipString();
}
int cookieOrOffsetOrOrdinal = (int)entryParser.GetUnsigned();
int fieldOffset = (int)externalReferences.GetRvaFromIndex((uint)cookieOrOffsetOrOrdinal);
IntPtr fieldAddress = RvaToNonGenericStaticFieldAddress(
mappingTableModule, fieldOffset);
if ((comparableStaticRegionAddress == null) || (comparableStaticRegionAddress > fieldAddress.ToPointer()))
{
comparableStaticRegionAddress = (byte *)fieldAddress.ToPointer();
}
}
// Static fields for a type can only be found in at most one module
if (comparableStaticRegionAddress != null)
{
break;
}
}
if (comparableStaticRegionAddress != null)
{
staticsRegionAddress = new IntPtr(comparableStaticRegionAddress);
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Try to look up non-gc/gc static effective field bases for a non-generic non-dynamic type.
/// </summary>
/// <param name="declaringTypeHandle">Declaring type for the method</param>
/// <param name="fieldAccessKind">type of static base to find</param>
/// <param name="staticsRegionAddress">Output - statics region address info</param>
/// <returns>true when found, false otherwise</returns>
private static unsafe bool TryGetStaticFieldBaseFromFieldAccessMap(
RuntimeTypeHandle declaringTypeHandle,
FieldAccessStaticDataKind fieldAccessKind,
out IntPtr staticsRegionAddress)
{
staticsRegionAddress = IntPtr.Zero;
CanonicallyEquivalentEntryLocator canonWrapper = new CanonicallyEquivalentEntryLocator(declaringTypeHandle, CanonicalFormKind.Specific);
// This function only finds results for non-dynamic, non-generic types
if (RuntimeAugments.IsDynamicType(declaringTypeHandle) || RuntimeAugments.IsGenericType(declaringTypeHandle))
{
return(false);
}
foreach (NativeFormatModuleInfo mappingTableModule in ModuleList.EnumerateModules(RuntimeAugments.GetModuleFromTypeHandle(declaringTypeHandle)))
{
NativeReader fieldMapReader;
if (!TryGetNativeReaderForBlob(mappingTableModule, ReflectionMapBlob.FieldAccessMap, out fieldMapReader))
{
continue;
}
NativeParser fieldMapParser = new NativeParser(fieldMapReader, 0);
NativeHashtable fieldHashtable = new NativeHashtable(fieldMapParser);
ExternalReferencesTable externalReferences = default(ExternalReferencesTable);
if (!externalReferences.InitializeCommonFixupsTable(mappingTableModule))
{
continue;
}
var lookup = fieldHashtable.Lookup(canonWrapper.LookupHashCode);
NativeParser entryParser;
while (!(entryParser = lookup.GetNext()).IsNull)
{
// Grammar of a hash table entry:
// Flags + DeclaringType + MdHandle or Name + Cookie or Ordinal or Offset
FieldTableFlags entryFlags = (FieldTableFlags)entryParser.GetUnsigned();
FieldTableFlags storageClass = entryFlags & FieldTableFlags.StorageClass;
Debug.Assert((entryFlags & FieldTableFlags.IsUniversalCanonicalEntry) == 0);
if (storageClass == FieldTableFlags.Instance)
{
continue;
}
switch (fieldAccessKind)
{
case FieldAccessStaticDataKind.NonGC:
if (storageClass != FieldTableFlags.NonGCStatic)
{
continue;
}
break;
case FieldAccessStaticDataKind.GC:
if (storageClass != FieldTableFlags.GCStatic)
{
continue;
}
break;
case FieldAccessStaticDataKind.TLS:
if (storageClass != FieldTableFlags.ThreadStatic)
{
continue;
}
break;
default:
return(false);
}
RuntimeTypeHandle entryDeclaringTypeHandle = externalReferences.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
if (!entryDeclaringTypeHandle.Equals(declaringTypeHandle))
{
continue;
}
if ((entryFlags & FieldTableFlags.HasMetadataHandle) != 0)
{
// skip metadata handle
entryParser.GetUnsigned();
}
else
{
// skip field name
entryParser.SkipString();
}
IntPtr fieldAddress = IntPtr.Zero;
if ((entryFlags & FieldTableFlags.FieldOffsetEncodedDirectly) == 0)
{
fieldAddress = externalReferences.GetAddressFromIndex(entryParser.GetUnsigned());
}
if (fieldAddress != IntPtr.Zero)
{
staticsRegionAddress = fieldAddress;
break;
}
}
// Static fields for a type can only be found in at most one module
if (staticsRegionAddress != IntPtr.Zero)
{
break;
}
}
return(staticsRegionAddress != IntPtr.Zero);
}
