Removed CommonHeader.h generated file from the MdePkg.

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / DisablePaging32.c

/** @file\r
  AsmDisablePaging32 function.\r
\r
  Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
  All rights reserved. This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
//\r
// Include common header file for this module.\r
//\r
#include <BaseLibInternals.h>\r
\r
#if _MSC_EXTENSIONS\r
\r
__declspec (naked)\r
VOID\r
EFIAPI\r
InternalX86DisablePaging32 (\r
  IN      SWITCH_STACK_ENTRY_POINT  EntryPoint,\r
  IN      VOID                      *Context1,    OPTIONAL\r
  IN      VOID                      *Context2,    OPTIONAL\r
  IN      VOID                      *NewStack\r
  )\r
{\r
  _asm {\r
    push    ebp\r
    mov     ebp, esp\r
    mov     ebx, EntryPoint\r
    mov     ecx, Context1\r
    mov     edx, Context2\r
    pushfd\r
    pop     edi                         // save EFLAGS to edi\r
    cli\r
    mov     eax, cr0\r
    btr     eax, 31\r
    mov     esp, NewStack\r
    mov     cr0, eax\r
    push    edi\r
    popfd                               // restore EFLAGS from edi\r
    push    edx\r
    push    ecx\r
    call    ebx\r
    jmp     $                           // EntryPoint() should not return\r
  }\r
}\r
\r
#endif\r