adding GetDomainFromContext cDAC API (#117517)

Co-authored-by: Rachel Jarvi <[email protected]>

Author: rcj1

src/native/managed/cdac/mscordaccore_universal/Legacy/SOSDacImpl.cs

@@ -242,7 +242,31 @@ int ISOSDacInterface.GetCodeHeapList(ClrDataAddress jitManager, uint count, void
     int ISOSDacInterface.GetDacModuleHandle(void* phModule)
         => _legacyImpl is not null ? _legacyImpl.GetDacModuleHandle(phModule) : HResults.E_NOTIMPL;
     int ISOSDacInterface.GetDomainFromContext(ClrDataAddress context, ClrDataAddress* domain)
-        => _legacyImpl is not null ? _legacyImpl.GetDomainFromContext(context, domain) : HResults.E_NOTIMPL;
+    {
+        int hr = HResults.S_OK;
+        if (context == 0 || domain == null)
+        {
+            return HResults.E_INVALIDARG;
+        }
+        try
+        {
+            *domain = context;
+        }
+        catch (System.Exception ex)
+        {
+            hr = ex.HResult;
+        }
+#if DEBUG
+        if (_legacyImpl is not null)
+        {
+            ClrDataAddress domainLocal;
+            int hrLocal = _legacyImpl.GetDomainFromContext(context, &domainLocal);
+            Debug.Assert(hrLocal == hr, $"cDAC: {hr:x}, DAC: {hrLocal:x}");
+            Debug.Assert(domainLocal == context, $"cDAC: {context:x}, DAC: {domainLocal:x}");
+        }
+#endif
+        return hr;
+    }
     int ISOSDacInterface.GetDomainLocalModuleData(ClrDataAddress addr, void* data)
     {
         // CoreCLR does not use domain local modules anymore