1#------------------------------------------------------------------------------
2#
3# Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
4# This program and the accompanying materials
5# are licensed and made available under the terms and conditions of the BSD License
6# which accompanies this distribution.  The full text of the license may be found at
7# http://opensource.org/licenses/bsd-license.php.
8#
9# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
11#
12# Module Name:
13#
14#   LongJump.S
15#
16# Abstract:
17#
18#   Implementation of _LongJump() on IA-32.
19#
20#------------------------------------------------------------------------------
21
22ASM_GLOBAL ASM_PFX(InternalLongJump)
23
24#------------------------------------------------------------------------------
25# VOID
26# EFIAPI
27# InternalLongJump (
28#   IN      BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer,
29#   IN      UINTN                     Value
30#   );
31#------------------------------------------------------------------------------
32ASM_PFX(InternalLongJump):
33    pop     %eax                        # skip return address
34    pop     %edx                        # edx <- JumpBuffer
35    pop     %eax                        # eax <- Value
36    movl    (%edx), %ebx
37    movl    4(%edx), %esi
38    movl    8(%edx), %edi
39    movl    12(%edx), %ebp
40    movl    16(%edx), %esp
41    jmp     *20(%edx)                   # restore "eip"
42