diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/X64/XGetBv.nasm')
| -rw-r--r-- | MdePkg/Library/BaseLib/X64/XGetBv.nasm | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/X64/XGetBv.nasm b/MdePkg/Library/BaseLib/X64/XGetBv.nasm new file mode 100644 index 0000000000..09f3be8ae0 --- /dev/null +++ b/MdePkg/Library/BaseLib/X64/XGetBv.nasm @@ -0,0 +1,34 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (C) 2020, Advanced Micro Devices, Inc. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+; Module Name:
+;
+; XGetBv.Asm
+;
+; Abstract:
+;
+; AsmXgetBv function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ DEFAULT REL
+ SECTION .text
+
+;------------------------------------------------------------------------------
+; UINT64
+; EFIAPI
+; AsmXGetBv (
+; IN UINT32 Index
+; );
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmXGetBv)
+ASM_PFX(AsmXGetBv):
+ xgetbv
+ shl rdx, 32
+ or rax, rdx
+ ret
+
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