1 files changed, 31 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/Ia32/ReadPmc.c b/roms/edk2/MdePkg/Library/BaseLib/Ia32/ReadPmc.c
new file mode 100644
index 000000000..cc09ed700
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseLib/Ia32/ReadPmc.c
@@ -0,0 +1,31 @@
+/** @file
+  AsmReadPmc function
+
+  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+/**
+  Reads the current value of a Performance Counter (PMC).
+
+  Reads and returns the current value of performance counter specified by
+  Index. This function is only available on IA-32 and x64.
+
+  @param  Index The 32-bit Performance Counter index to read.
+
+  @return The value of the PMC specified by Index.
+
+**/
+UINT64
+EFIAPI
+AsmReadPmc (
+  IN UINT32   Index
+  )
+{
+  _asm {
+    mov     ecx, Index
+    rdpmc
+  }
+}
+