1 files changed, 58 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/ia32/EnablePaging32.s b/MdePkg/Library/BaseLib/ia32/EnablePaging32.s
new file mode 100644
index 0000000000..6f9befcb4a
--- /dev/null
+++ b/MdePkg/Library/BaseLib/ia32/EnablePaging32.s
@@ -0,0 +1,58 @@
+#------------------------------------------------------------------------------
+#
+# 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:
+#
+#   EnablePaging32.Asm
+#
+# Abstract:
+#
+#   AsmEnablePaging32 function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+
+
+     
+
+#------------------------------------------------------------------------------
+# VOID
+# EFIAPI
+# AsmEnablePaging32 (
+#   IN      SWITCH_STACK_ENTRY_POINT  EntryPoint,
+#   IN      VOID                      *Context1,    OPTIONAL
+#   IN      VOID                      *Context2,    OPTIONAL
+#   IN      VOID                      *NewStack
+#   );
+#------------------------------------------------------------------------------
+.global _AsmEnablePaging32
+_AsmEnablePaging32: 
+    movl    4(%esp),%ebx
+    movl    8(%esp),%ecx
+    movl    12(%esp),%edx
+    pushfl
+    popl    %edi
+    cli
+    movl    %cr0, %eax
+    btsl    $31,%eax
+    movl    16(%esp),%esp
+    movl    %eax, %cr0
+    pushl   %edi
+    popfl
+    pushl   %edx
+    pushl   %ecx
+    call    *%ebx
+    jmp     .
+
+
+