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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/* Copyright 2009-2014 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
This file is part of the gdb testsuite.
It tests displaced stepping over various insns that require special
handling. */
.text
.global main
main:
nop
/***********************************************/
/* Test call/ret. */
nop
.global test_call
test_call:
call test_call_subr
nop
.global test_ret_end
test_ret_end:
nop
/***********************************************/
/* Absolute jump with leading prefixes.
These don't occur in normal code, but gdb should still DTRT. */
nop
.global test_prefixed_abs_jump
test_prefixed_abs_jump:
ds
jmp *test_prefixed_abs_jump_addr
.data
test_prefixed_abs_jump_addr:
.4byte test_prefixed_abs_jump_target
.text
test_prefixed_abs_jump_target:
nop
.global test_prefixed_abs_jump_end
test_prefixed_abs_jump_end:
nop
/***********************************************/
/* Test syscall. */
mov $0x14,%eax /* getpid */
.global test_syscall
test_syscall:
int $0x80
nop
.global test_syscall_end
test_syscall_end:
nop
/***********************************************/
/* Test syscall again, this time with a prefix.
These don't occur in normal code, but gdb should still DTRT. */
mov $0x14,%eax /* getpid */
.global test_prefixed_syscall
test_prefixed_syscall:
repnz
int $0x80
nop
.global test_prefixed_syscall_end
test_prefixed_syscall_end:
nop
/***********************************************/
/* Test stepping over int3.
The prefixes are pointless, but it's possible, so we exercise it. */
nop
.global test_int3
test_int3:
repz
repz
int3
nop
.global test_int3_end
test_int3_end:
nop
/***********************************************/
/* all done */
pushl $0
call exit
hlt
/***********************************************/
/* subroutine to help test call/ret */
test_call_subr:
nop
.global test_call_end
test_call_end:
nop
.global test_ret
test_ret:
ret
|
