MdePkg/Library/BaseLib/Ia32/SetJump.c

   1 /** @file
   2   Implementation of SetJump() on IA-32.
   3
   4   Copyright (c) 2006 - 2007, Intel Corporation<BR>
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 //
  16 // Include common header file for this module.
  17 //
  18 #include "CommonHeader.h"
  19
  20 VOID
  21 EFIAPI
  22 InternalAssertJumpBuffer (
  23   IN      BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer
  24   );
  25
  26 _declspec (naked)
  27 UINTN
  28 EFIAPI
  29 SetJump (
  30   OUT     BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer
  31   )
  32 {
  33   _asm {
  34     push    [esp + 4]
  35     call    InternalAssertJumpBuffer
  36     pop     ecx
  37     pop     ecx
  38     mov     edx, [esp]
  39     mov     [edx], ebx
  40     mov     [edx + 4], esi
  41     mov     [edx + 8], edi
  42     mov     [edx + 12], ebp
  43     mov     [edx + 16], esp
  44     mov     [edx + 20], ecx
  45     xor     eax, eax
  46     jmp     ecx
  47   }
  48 }
  49