diff options
| author | Jordan Justen <jordan.l.justen@intel.com> | 2013-07-29 21:09:55 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-07-29 21:09:55 +0000 |
| commit | 5d71a30480bdf7081f72485d6bf48361c244c4d7 (patch) | |
| tree | eaa76ec905c5a488d86edb9dcc5c4c7a79958258 /UnixPkg/Library/UnixBaseLib/X64/DisablePaging64.asm | |
| parent | bf6ee6c7c33cf280cdfb2fd0e6b66a712b7aa4a1 (diff) | |
| download | edk2-platforms-5d71a30480bdf7081f72485d6bf48361c244c4d7.tar.xz | |
UnixPkg: Remove UnixPkg files (It is replaced by EmulatorPkg)
For now the UnixPkg/Deprecated.txt file is retained to indicate
that EmulatorPkg should be used instead.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14518 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'UnixPkg/Library/UnixBaseLib/X64/DisablePaging64.asm')
| -rw-r--r-- | UnixPkg/Library/UnixBaseLib/X64/DisablePaging64.asm | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/UnixPkg/Library/UnixBaseLib/X64/DisablePaging64.asm b/UnixPkg/Library/UnixBaseLib/X64/DisablePaging64.asm deleted file mode 100644 index 32dcd5aa1f..0000000000 --- a/UnixPkg/Library/UnixBaseLib/X64/DisablePaging64.asm +++ /dev/null @@ -1,84 +0,0 @@ -;------------------------------------------------------------------------------
-;
-; Copyright (c) 2006 - 2008, 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.
-;
-; Module Name:
-;
-; DisablePaging64.Asm
-;
-; Abstract:
-;
-; AsmDisablePaging64 function
-;
-; Notes:
-;
-;------------------------------------------------------------------------------
-
- .code
-
-;------------------------------------------------------------------------------
-; VOID
-; EFIAPI
-; InternalX86DisablePaging64 (
-; IN UINT16 Cs,
-; IN UINT32 EntryPoint,
-; IN UINT32 Context1, OPTIONAL
-; IN UINT32 Context2, OPTIONAL
-; IN UINT32 NewStack
-; );
-;------------------------------------------------------------------------------
-InternalX86DisablePaging64 PROC
- cli
- lea rsi, @F ; rsi <- The start address of transition code
- mov edi, [rsp + 28h] ; rdi <- New stack
- lea rax, mTransitionEnd ; rax <- end of transition code
- sub rax, rsi ; rax <- The size of transition piece code
- add rax, 4 ; Round RAX up to the next 4 byte boundary
- and al, 0fch
- sub rdi, rax ; rdi <- Use stack to hold transition code
- mov r10d, edi ; r10 <- The start address of transicition code below 4G
- push rcx ; save rcx to stack
- mov rcx, rax ; rcx <- The size of transition piece code
- rep movsb ; copy transition code to top of new stack which must be below 4GB
- pop rcx ; restore rcx
-
- mov esi, r8d
- mov edi, r9d
- mov eax, r10d ; eax <- start of the transition code on the stack
- sub eax, 4 ; eax <- One slot below transition code on the stack
- push rcx ; push Cs to stack
- push r10 ; push address of tansition code on stack
- DB 48h ; prefix to composite "retq" with next "retf"
- retf ; Use far return to load CS register from stack
-
-; Start of transition code
-@@:
- mov esp, eax ; set up new stack
- mov rax, cr0
- btr eax, 31 ; Clear CR0.PG
- mov cr0, rax ; disable paging and caches
-
- mov ebx, edx ; save EntryPoint to rbx, for rdmsr will overwrite rdx
- mov ecx, 0c0000080h
- rdmsr
- and ah, NOT 1 ; clear LME
- wrmsr
- mov rax, cr4
- and al, NOT (1 SHL 5) ; clear PAE
- mov cr4, rax
- push rdi ; push Context2
- push rsi ; push Context1
- call rbx ; transfer control to EntryPoint
- hlt ; no one should get here
-InternalX86DisablePaging64 ENDP
-
-mTransitionEnd LABEL BYTE
-
- END
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