1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
## @file
# This is the ASM for starting a linux kernel.
#
# Copyright (c) 1999 - 2016, Intel Corporation. All rights reserved.<BR>
#
# 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
#
##
ASM_GLOBAL ASM_PFX(AsmStartLinuxKernel)
ASM_PFX(AsmStartLinuxKernel):
movl 4(%esp), %eax
subl $0x10, %esp
leal NewSelectorJmp, %ebx
movl %ebx, (%esp)
movl $0x10, %ebx
movl %ebx, 4(%esp)
jmpl (%esp)
NewSelectorJmp:
addl $0x10, %esp
movl $0x18, %ebx
movl %ebx, %ds
movl %ebx, %es
movl %ebx, %fs
movl %ebx, %gs
movl %ebx, %ss
movl $0x8000, %esi
xorl %ebp, %ebp
xorl %edi, %edi
xorl %ebx, %ebx
jmpl %eax
ret
|
