diff options
Diffstat (limited to 'OldMdePkg/Library/BaseLib/X64/EnablePaging64.S')
| -rw-r--r-- | OldMdePkg/Library/BaseLib/X64/EnablePaging64.S | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/OldMdePkg/Library/BaseLib/X64/EnablePaging64.S b/OldMdePkg/Library/BaseLib/X64/EnablePaging64.S new file mode 100644 index 0000000000..15209c0030 --- /dev/null +++ b/OldMdePkg/Library/BaseLib/X64/EnablePaging64.S @@ -0,0 +1,61 @@ +#------------------------------------------------------------------------------ +# +# Copyright (c) 2006, Intel Corporation +# 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: +# +# EnablePaging64.S +# +# Abstract: +# +# AsmEnablePaging64 function +# +# Notes: +# +#------------------------------------------------------------------------------ + + +#------------------------------------------------------------------------------ +# VOID +# EFIAPI +# InternalX86EnablePaging64 ( +# IN UINT16 Cs, %rdi +# IN UINT64 EntryPoint, %rsi +# IN UINT64 Context1, OPTIONAL %rdx +# IN UINT64 Context2, OPTIONAL %rcx +# IN UINT64 NewStack %r8 +# ); +#------------------------------------------------------------------------------ +.global _InternalX86EnablePaging64; +_InternalX86EnablePaging64: + cli + pop %rax + callq Base +Base: + addl $(L1-Base),(%rsp) + mov %cr4,%rax + or $0x20,%al + mov %rax,%cr4 + mov $0xc0000080,%ecx + rdmsr + or $0x1,%ah + wrmsr + mov %cr0,%rax + bts $0x1f,%eax + mov %rax,%cr0 + lret +L1: + addr32 mov (%esp),%rbx + addr32 mov 0x8(%esp),%rcx + addr32 mov 0x10(%esp),%rdx + addr32 mov 0x18(%esp),%rsp + add $-0x20,%rsp + callq *%rbx + jmp . |