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author | bbahnsen <bbahnsen@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-11-16 01:11:41 +0000 |
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committer | bbahnsen <bbahnsen@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-11-16 01:11:41 +0000 |
commit | e29e52e7c0d1cfe0de872fbb5ebe6c77bba0c30d (patch) | |
tree | 3c6c634ac8918f94c0fa117e4e7eb3818bc5d62a /MdePkg/Library/BaseLib/X64/DisablePaging64.S | |
parent | e2136826a3d45108ec96850e6b5921a315c1c1d8 (diff) | |
download | edk2-platforms-e29e52e7c0d1cfe0de872fbb5ebe6c77bba0c30d.tar.xz |
Initial port to x86_64 gnu assembly.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1959 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseLib/X64/DisablePaging64.S')
-rw-r--r-- | MdePkg/Library/BaseLib/X64/DisablePaging64.S | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/X64/DisablePaging64.S b/MdePkg/Library/BaseLib/X64/DisablePaging64.S new file mode 100644 index 0000000000..d23313de38 --- /dev/null +++ b/MdePkg/Library/BaseLib/X64/DisablePaging64.S @@ -0,0 +1,66 @@ +#------------------------------------------------------------------------------ +# +# 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: +# +# DisablePaging64.S +# +# Abstract: +# +# AsmDisablePaging64 function +# +# Notes: +# +#------------------------------------------------------------------------------ + + + +#------------------------------------------------------------------------------ +# VOID +# EFIAPI +# InternalX86DisablePaging64 ( +# IN UINT16 Cs, %rdi +# IN UINT64 EntryPoint, %rsi +# IN UINT64 Context1, OPTIONAL %rdx +# IN UINT32 Context2, OPTIONAL %rcx +# IN UINT64 NewStack %r8 +# ); +#------------------------------------------------------------------------------ + +.global _InternalX86DisablePaging64 +_InternalX86DisablePaging64: + cli + shl $0x20,%rcx + lea (%rip), %eax + mov %eax,%ecx + push %rcx + mov %edx,%ebx + mov %r8d,%esi + mov %r9d,%edi + mov 0x28(%rsp),%eax + lret +L1: + mov %eax,%esp + mov %cr0,%rax + btr $0x1f,%eax + mov %rax,%cr0 + mov $0xc0000080,%ecx + rdmsr + and $0xfe,%ah + wrmsr + mov %cr4,%rax + and $0xdf,%al + mov %rax,%cr4 + push %rdi + push %rsi + callq *%rbx + jmp . + |