1 files changed, 33 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/Ia32/WriteLdtr.c b/roms/edk2/MdePkg/Library/BaseLib/Ia32/WriteLdtr.c
new file mode 100644
index 000000000..8e12f7840
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseLib/Ia32/WriteLdtr.c
@@ -0,0 +1,33 @@
+/** @file
+  AsmWriteLdtr function
+
+  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+
+
+
+/**
+  Writes the current Local Descriptor Table Register (GDTR) selector.
+
+  Writes and the current LDTR descriptor specified by Ldtr. This function is
+  only available on IA-32 and x64.
+
+  @param  Ldtr  16-bit LDTR selector value.
+
+**/
+VOID
+EFIAPI
+AsmWriteLdtr (
+  IN UINT16 Ldtr
+  )
+{
+  _asm {
+    xor     eax, eax
+    mov     ax, Ldtr
+    lldt    ax
+  }
+}
+