diff options
| author | bxing <bxing@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-07-21 08:47:38 +0000 |
|---|---|---|
| committer | bxing <bxing@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-07-21 08:47:38 +0000 |
| commit | 3f566587aea64bb986866c7f69a6b82891bf59db (patch) | |
| tree | 406fa713c2baaa46f9c357f49bcef7d710e7f044 /MdePkg/Library/BaseLib/x86EnablePaging64.c | |
| parent | 31a9215c3223d3818d1709f39d06774e18df103f (diff) | |
| download | edk2-platforms-3f566587aea64bb986866c7f69a6b82891bf59db.tar.xz | |
1. Updated function headers in all assembly files.
2. Split x86LowLevel.c into a bunch of C files to make images linked with BaseLib smaller.
3. Fixed a few minor bugs.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1066 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseLib/x86EnablePaging64.c')
| -rw-r--r-- | MdePkg/Library/BaseLib/x86EnablePaging64.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/x86EnablePaging64.c b/MdePkg/Library/BaseLib/x86EnablePaging64.c new file mode 100644 index 0000000000..424568d0f7 --- /dev/null +++ b/MdePkg/Library/BaseLib/x86EnablePaging64.c @@ -0,0 +1,64 @@ +/** @file
+ IA-32/x64 AsmEnablePaging64()
+
+ 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.
+
+ Module Name: x86EnablePaging64.c
+
+**/
+
+#include "BaseLibInternals.h"
+
+/**
+ Enables the 64-bit paging mode on the CPU.
+
+ Enables the 64-bit paging mode on the CPU. CR0, CR3, CR4, and the page tables
+ must be properly initialized prior to calling this service. This function
+ assumes the current execution mode is 32-bit protected mode with flat
+ descriptors. This function is only available on IA-32. After the 64-bit
+ paging mode is enabled, control is transferred to the function specified by
+ EntryPoint using the new stack specified by NewStack and passing in the
+ parameters specified by Context1 and Context2. Context1 and Context2 are
+ optional and may be 0. The function EntryPoint must never return.
+
+ If the current execution mode is not 32-bit protected mode with flat
+ descriptors, then ASSERT().
+ If EntryPoint is 0, then ASSERT().
+ If NewStack is 0, then ASSERT().
+
+ @param Cs The 16-bit selector to load in the CS before EntryPoint
+ is called. The descriptor in the GDT that this selector
+ references must be setup for long mode.
+ @param EntryPoint The 64-bit virtual address of the function to call with
+ the new stack after paging is enabled.
+ @param Context1 The 64-bit virtual address of the context to pass into
+ the EntryPoint function as the first parameter after
+ paging is enabled.
+ @param Context2 The 64-bit virtual address of the context to pass into
+ the EntryPoint function as the second parameter after
+ paging is enabled.
+ @param NewStack The 64-bit virtual address of the new stack to use for
+ the EntryPoint function after paging is enabled.
+
+**/
+VOID
+EFIAPI
+AsmEnablePaging64 (
+ IN UINT16 Cs,
+ IN UINT64 EntryPoint,
+ IN UINT64 Context1, OPTIONAL
+ IN UINT64 Context2, OPTIONAL
+ IN UINT64 NewStack
+ )
+{
+ ASSERT (EntryPoint != 0);
+ ASSERT (NewStack != 0);
+ InternalX86EnablePaging64 (Cs, EntryPoint, Context1, Context2, NewStack);
+}
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