diff options
Diffstat (limited to 'Core/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm')
-rw-r--r-- | Core/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Core/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm b/Core/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm new file mode 100644 index 0000000000..2e16e71f6a --- /dev/null +++ b/Core/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm @@ -0,0 +1,30 @@ +;------------------------------------------------------------------------------
+; @file
+; Sets the CR3 register for 64-bit paging
+;
+; Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
+; 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.
+;
+;------------------------------------------------------------------------------
+
+BITS 32
+
+;
+; Modified: EAX
+;
+SetCr3ForPageTables64:
+
+ ;
+ ; These pages are built into the ROM image in X64/PageTables.asm
+ ;
+ mov eax, ADDR_OF(TopLevelPageDirectory)
+ mov cr3, eax
+
+ OneTimeCallRet SetCr3ForPageTables64
+
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