1 files changed, 16 insertions, 1 deletions
diff --git a/src/mscorlib/src/System/CLRConfig.cs b/src/mscorlib/src/System/CLRConfig.cs
index 16c610b82b..d97922f9b9 100644
--- a/src/mscorlib/src/System/CLRConfig.cs
+++ b/src/mscorlib/src/System/CLRConfig.cs
@@ -7,8 +7,23 @@ using System.Runtime.Versioning;
 using System.Runtime.InteropServices;
 using System.Security;
 
-namespace System {
+namespace System
+{
+    // CLRConfig is mainly reading the config switch values. this is used when we cannot use the AppContext class 
+    // one example, is using the context switch in the globalization code which require to read the switch very 
+    // early even before the appdomain get initialized.
+    // In general AppContext should be used instead of CLRConfig if there is no reason prevent that.
+    internal class CLRConfig
+    {
+        internal static bool GetBoolValue(string switchName)
+        {
+            return GetConfigBoolValue(switchName);
+        }
 
+        [DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
+        [SuppressUnmanagedCodeSecurity]
+        private extern static bool GetConfigBoolValue(string configSwitchName);
+    }
 }  // namespace System
 
 // file CLRConfig