EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/SetJump.c

   1 /**
   2   Implementation of SetJump() on IA-32.
   3
   4   Copyright (c) 2006 - 2007, Intel Corporation. All rights reserved.<BR>
   5   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 #include "BaseLibInternals.h"
  16
  17 VOID
  18 EFIAPI
  19 InternalAssertJumpBuffer (
  20   IN      BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer
  21   );
  22
  23 _declspec (naked)
  24 UINTN
  25 EFIAPI
  26 SetJump (
  27   OUT     BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer
  28   )
  29 {
  30   _asm {
  31     push    [esp + 4]
  32     call    InternalAssertJumpBuffer
  33     pop     ecx
  34     pop     ecx
  35     mov     edx, [esp]
  36     mov     [edx], ebx
  37     mov     [edx + 4], esi
  38     mov     [edx + 8], edi
  39     mov     [edx + 12], ebp
  40     mov     [edx + 16], esp
  41     mov     [edx + 20], ecx
  42     xor     eax, eax
  43     jmp     ecx
  44   }
  45 }
  46