diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/Ia32/EnablePaging64.S')
| -rw-r--r-- | MdePkg/Library/BaseLib/Ia32/EnablePaging64.S | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/MdePkg/Library/BaseLib/Ia32/EnablePaging64.S b/MdePkg/Library/BaseLib/Ia32/EnablePaging64.S deleted file mode 100644 index 08950ce0e2..0000000000 --- a/MdePkg/Library/BaseLib/Ia32/EnablePaging64.S +++ /dev/null @@ -1,63 +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:
-#
-# EnablePaging64.S
-#
-# Abstract:
-#
-# InternalX86EnablePaging64 function
-#
-# Notes:
-#
-#------------------------------------------------------------------------------
-
-ASM_GLOBAL ASM_PFX(InternalX86EnablePaging64)
-
-#------------------------------------------------------------------------------
-# VOID
-# EFIAPI
-# InternalX86EnablePaging64 (
-# IN UINT16 CodeSelector,
-# IN UINT64 EntryPoint,
-# IN UINT64 Context1, OPTIONAL
-# IN UINT64 Context2, OPTIONAL
-# IN UINT64 NewStack
-# );
-#------------------------------------------------------------------------------
-ASM_PFX(InternalX86EnablePaging64):
- cli
- movl $LongStart, (%esp) # offset for far retf, seg is the 1st arg
- movl %cr4, %eax
- orb $0x20, %al
- movl %eax, %cr4 # enable PAE
- movl $0xc0000080, %ecx
- rdmsr
- orb $1, %ah # set LME
- wrmsr
- movl %cr0, %eax
- btsl $31, %eax # set PG
- movl %eax, %cr0 # enable paging
- lret # topmost 2 dwords hold the address
-LongStart: # long mode starts here
- .byte 0x67, 0x48 # 32-bit address size, 64-bit operand size
- movl (%esp), %ebx # mov rbx, [esp]
- .byte 0x67, 0x48
- movl 8(%esp), %ecx # mov rcx, [esp + 8]
- .byte 0x67, 0x48
- movl 0x10(%esp), %edx # mov rdx, [esp + 10h]
- .byte 0x67, 0x48
- movl 0x18(%esp), %esp # mov rsp, [esp + 18h]
- .byte 0x48
- addl $-0x20, %esp # add rsp, -20h
- call *%ebx # call rbx
- jmp . # no one should get here
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