MdePkg/Library/BaseLib/X64/SetJump.S

#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution.  The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
# Module Name:
#
#   SetJump.S
#
# Abstract:
#
#   Implementation of SetJump() on x86_64
#
#------------------------------------------------------------------------------

.extern ASM_PFX(InternalAssertJumpBuffer)
.global ASM_PFX(SetJump)
ASM_PFX(SetJump):
    push   %rcx
    add    $0xffffffffffffffe0,%rsp
    call   ASM_PFX(InternalAssertJumpBuffer)
    add    $0x20,%rsp
    pop    %rcx
    pop    %rdx
    mov    %rbx,(%rcx)
    mov    %rsp,0x8(%rcx)
    mov    %rbp,0x10(%rcx)
    mov    %rdi,0x18(%rcx)
    mov    %rsi,0x20(%rcx)
    mov    %r12,0x28(%rcx)
    mov    %r13,0x30(%rcx)
    mov    %r14,0x38(%rcx)
    mov    %r15,0x40(%rcx)
    mov    %rdx,0x48(%rcx)
    xor    %rax,%rax
    jmpq   *%rdx