1 files changed, 32 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/Ia32/ReadDr3.c b/roms/edk2/MdePkg/Library/BaseLib/Ia32/ReadDr3.c
new file mode 100644
index 000000000..9b899e79c
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseLib/Ia32/ReadDr3.c
@@ -0,0 +1,32 @@
+/** @file
+  AsmReadDr3 function
+
+  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+
+
+
+/**
+  Reads the current value of Debug Register 3 (DR3).
+
+  Reads and returns the current value of DR3. This function is only available
+  on IA-32 and x64. This returns a 32-bit value on IA-32 and a 64-bit value on
+  x64.
+
+  @return The value of Debug Register 3 (DR3).
+
+**/
+UINTN
+EFIAPI
+AsmReadDr3 (
+  VOID
+  )
+{
+  __asm {
+    mov     eax, dr3
+  }
+}
+