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# SetJump.S 15# 16# Abstract: 17# 18# Implementation of SetJump() on IA-32. 19# 20#------------------------------------------------------------------------------ 21 22ASM_GLOBAL ASM_PFX(SetJump), ASM_PFX(InternalAssertJumpBuffer) 23 24#------------------------------------------------------------------------------ 25# UINTN 26# EFIAPI 27# SetJump ( 28# OUT BASE_LIBRARY_JUMP_BUFFER *JumpBuffer 29# ); 30#------------------------------------------------------------------------------ 31ASM_PFX(SetJump): 32 pushl 0x4(%esp) 33 call ASM_PFX(InternalAssertJumpBuffer) # To validate JumpBuffer 34 pop %ecx 35 pop %ecx # ecx <- return address 36 movl (%esp), %edx 37 movl %ebx, (%edx) 38 movl %esi, 4(%edx) 39 movl %edi, 8(%edx) 40 movl %ebp, 12(%edx) 41 movl %esp, 16(%edx) 42 movl %ecx, 20(%edx) # eip value to restore in LongJump 43 xorl %eax, %eax 44 jmp *%ecx 45