1 files changed, 42 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/X86FxSave.c b/roms/edk2/MdePkg/Library/BaseLib/X86FxSave.c
new file mode 100644
index 000000000..2621a08a3
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseLib/X86FxSave.c
@@ -0,0 +1,42 @@
+/** @file
+  IA-32/x64 AsmFxSave()
+
+  Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+
+
+
+#include "BaseLibInternals.h"
+
+/**
+  Save the current floating point/SSE/SSE2 context to a buffer.
+
+  Saves the current floating point/SSE/SSE2 state to the buffer specified by
+  Buffer. Buffer must be aligned on a 16-byte boundary. This function is only
+  available on IA-32 and x64.
+
+  If Buffer is NULL, then ASSERT().
+  If Buffer is not aligned on a 16-byte boundary, then ASSERT().
+
+  @param  Buffer  A pointer to a buffer to save the floating point/SSE/SSE2 context.
+
+**/
+VOID
+EFIAPI
+AsmFxSave (
+  OUT     IA32_FX_BUFFER            *Buffer
+  )
+{
+  ASSERT (Buffer != NULL);
+  ASSERT (0 == ((UINTN)Buffer & 0xf));
+
+  InternalX86FxSave (Buffer);
+
+  //
+  // Mark one flag at end of Buffer, it will be check by AsmFxRestor()
+  //
+  *(UINT32 *) (&Buffer->Buffer[sizeof (Buffer->Buffer) - 4]) = 0xAA5555AA;
+}