diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/Ia32/ReadCr4.c')
-rw-r--r-- | MdePkg/Library/BaseLib/Ia32/ReadCr4.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/Ia32/ReadCr4.c b/MdePkg/Library/BaseLib/Ia32/ReadCr4.c new file mode 100644 index 0000000..bc5dd72 --- /dev/null +++ b/MdePkg/Library/BaseLib/Ia32/ReadCr4.c @@ -0,0 +1,30 @@ +/** @file
+ AsmReadCr4 function
+
+ Copyright (c) 2006, Intel Corporation<BR>
+ All rights reserved. This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#if _MSC_EXTENSIONS
+
+UINTN
+EFIAPI
+AsmReadCr4 (
+ VOID
+ )
+{
+ __asm {
+ _emit 0x0f // mov eax, cr4
+ _emit 0x20
+ _emit 0xE0
+ }
+}
+
+#endif
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