]> git.proxmox.com Git - mirror_edk2.git/blobdiff - OldMdePkg/Library/BaseLib/X64/EnablePaging64.S
Moved the MdePkg to OldMdePkg so that new code in MdePkg does not break existing...
[mirror_edk2.git] / OldMdePkg / Library / BaseLib / X64 / EnablePaging64.S
diff --git a/OldMdePkg/Library/BaseLib/X64/EnablePaging64.S b/OldMdePkg/Library/BaseLib/X64/EnablePaging64.S
new file mode 100644 (file)
index 0000000..15209c0
--- /dev/null
@@ -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    .