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
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/* $OpenBSD: debug_i386.S,v 1.1 1997/04/01 04:52:46 mickey Exp $ */
/*
* Copyright (c) 1997 Michael Shalayeff
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Michael Shalayeff.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <machine/asm.h>
#include <machine/psl.h>
#define _LOCORE
#include <machine/segments.h>
#include <debug_md.h>
#undef _LOCORE
.data
#ifndef NO_IDTR
.align 3
.globl _Idtr_real
_Idtr_real:
.word 1024
.long 0
.align 3
.globl _Idtr_prot
idt:
.long 0, 0
_Idtr_prot:
.word . - idt
.long idt
#endif
.text
ENTRY(check_regs)
pushal # 8 ones
pushl %ds
pushl %es
pushl %fs
pushl %gs
pushfl
movl $0x10, %eax
movl %ax, %ds
movl $_reg, %edi
cld
movl 0xc*4(%esp), %eax; stosl # %eax
movl 0xb*4(%esp), %eax; stosl # %ecx
movl 0xa*4(%esp), %eax; stosl # %edx
movl 0x9*4(%esp), %eax; stosl # %ebx
movl 0x8*4(%esp), %eax; stosl # %esp
movl 0x7*4(%esp), %eax; stosl # %ebp
movl 0x6*4(%esp), %eax; stosl # %esi
movl 0x5*4(%esp), %eax; stosl # %edi
movl 0xd*4(%esp), %eax; stosl # %eip
movl 0x0*4(%esp), %eax; stosl # %eflags
movl 0xe*4(%esp), %eax; stosl # %cs
movl %ss, %eax; stosl # %ss
movl 0x4*4(%esp), %eax; stosl # %ds
movl 0x3*4(%esp), %eax; stosl # %es
movl 0x2*4(%esp), %eax; stosl # %fs
movl 0x1*4(%esp), %eax; stosl # %gs
call _C_LABEL(dump_regs)
popfl
popl %gs
popl %fs
popl %es
popl %ds
popal
lret
|