Imported Upstream version 1.1.0upstream/1.1.0

1 files changed, 103 insertions, 0 deletions

diff --git a/src/vm/frameworkexceptionloader.cpp b/src/vm/frameworkexceptionloader.cpp
new file mode 100644
index 0000000000..7d01f82983
--- /dev/null
+++ b/src/vm/frameworkexceptionloader.cpp
@@ -0,0 +1,103 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+ 
+
+// Just the subset of functionality from the MscorlibBinder necessary for exceptions.
+
+#include "common.h"
+#include "frameworkexceptionloader.h"
+
+
+struct ExceptionLocationData
+{
+    LPCUTF8 Namespace;
+    LPCUTF8 Name;
+    LPCUTF8 AssemblySimpleName;
+    LPCUTF8 PublicKeyToken;
+};
+
+static const
+ExceptionLocationData g_ExceptionLocationData[] = {
+#define DEFINE_EXCEPTION(ns, reKind, bHRformessage, ...)
+#define DEFINE_EXCEPTION_HR_WINRT_ONLY(ns, reKind, ...)
+#define DEFINE_EXCEPTION_IN_OTHER_FX_ASSEMBLY(ns, reKind, assemblySimpleName, publicKeyToken, bHRformessage, ...) { ns, PTR_CSTR((TADDR) # reKind), assemblySimpleName, publicKeyToken },
+#include "rexcep.h"
+    {NULL, NULL, NULL, NULL}  // On Silverlight, this table may be empty.  This dummy entry allows us to compile.
+};
+
+
+// Note that some assemblies, like System.Runtime.WindowsRuntime, might not be installed on pre-Windows 8 machines.
+// This may return null.
+MethodTable* FrameworkExceptionLoader::GetException(RuntimeExceptionKind kind)
+{
+    CONTRACTL
+    {
+        THROWS;
+        GC_TRIGGERS;
+
+        PRECONDITION(kind > kLastExceptionInMscorlib);
+        PRECONDITION(kind - (kLastExceptionInMscorlib + 1) < COUNTOF(g_ExceptionLocationData) - 1);
+    }
+    CONTRACTL_END;
+
+    // This is for loading rarely-used exception objects in arbitrary appdomains.
+    // The loader should do caching - let's not create a multi-appdomain cache of these exception types here.
+    // Note that some assemblies, like System.Runtime.WindowsRuntime, might not be installed on pre-Windows 8 machines.
+    int index = kind - (kLastExceptionInMscorlib + 1);
+    ExceptionLocationData exData = g_ExceptionLocationData[index];
+    _ASSERTE(exData.Name != NULL && exData.AssemblySimpleName != NULL && exData.PublicKeyToken != NULL);  // Was the exception defined in mscorlib instead?
+    StackSString assemblyQualifiedName;
+    _ASSERTE(exData.Namespace != NULL);  // If we need to support stuff in a global namespace, fix this.
+    assemblyQualifiedName.SetUTF8(exData.Namespace);
+    assemblyQualifiedName.AppendUTF8(".");
+    assemblyQualifiedName.AppendUTF8(exData.Name);
+    assemblyQualifiedName.AppendUTF8(", ");
+    assemblyQualifiedName.AppendUTF8(exData.AssemblySimpleName);
+    assemblyQualifiedName.AppendUTF8(", PublicKeyToken=");
+    assemblyQualifiedName.AppendUTF8(exData.PublicKeyToken);
+    assemblyQualifiedName.AppendUTF8(", Version=");
+    assemblyQualifiedName.AppendUTF8(VER_ASSEMBLYVERSION_STR);
+    assemblyQualifiedName.AppendUTF8(", Culture=neutral");
+
+    MethodTable* pMT = NULL;
+    // Loading will either succeed or throw a FileLoadException.  Catch & swallow that exception.
+    EX_TRY
+    {
+        pMT = TypeName::GetTypeFromAsmQualifiedName(assemblyQualifiedName.GetUnicode(), FALSE).GetMethodTable();
+
+        // Since this type is from another assembly, we must ensure that assembly has been sufficiently loaded.
+        pMT->EnsureActive();
+    }
+    EX_CATCH
+    {
+        Exception *ex = GET_EXCEPTION();
+
+        // Let non-file-not-found execeptions propagate
+        if (EEFileLoadException::GetFileLoadKind(ex->GetHR()) != kFileNotFoundException)
+            EX_RETHROW;
+
+        // Return COMException if we can't load the assembly we expect.
+        pMT = MscorlibBinder::GetException(kCOMException);
+    }
+    EX_END_CATCH(RethrowTerminalExceptions);
+
+    return pMT;
+}
+
+void FrameworkExceptionLoader::GetExceptionName(RuntimeExceptionKind kind, SString & exceptionName)
+{
+    CONTRACTL {
+        THROWS;
+        GC_NOTRIGGER;
+        MODE_ANY;
+
+        PRECONDITION(kind > kLastExceptionInMscorlib);
+        PRECONDITION(kind - (kLastExceptionInMscorlib + 1) < COUNTOF(g_ExceptionLocationData) - 1);
+    } CONTRACTL_END;
+
+    exceptionName.SetUTF8(g_ExceptionLocationData[kind].Namespace);
+    exceptionName.AppendUTF8(".");
+    exceptionName.AppendUTF8(g_ExceptionLocationData[kind].Name);
+}