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 VOID
  16 EFIAPI
  17 InternalAssertJumpBuffer (
  18   IN      BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer
  19   );
  20
  21 _declspec (naked)
  22 UINTN
  23 EFIAPI
  24 SetJump (
  25   OUT     BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer
  26   )
  27 {
  28   _asm {
  29     push    [esp + 4]
  30     call    InternalAssertJumpBuffer
  31     pop     ecx
  32     pop     ecx
  33     mov     edx, [esp]
  34     mov     [edx], ebx
  35     mov     [edx + 4], esi
  36     mov     [edx + 8], edi
  37     mov     [edx + 12], ebp
  38     mov     [edx + 16], esp
  39     mov     [edx + 20], ecx
  40     xor     eax, eax
  41     jmp     ecx
  42   }
  43 }
  44