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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
# Copyright 2004-2022 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/>.
# The program siginfo-obj.c arranges for a signal handler registered
# using sigaction's sa_sigaction / SA_SIGINFO to be called with
# si_addr filled in.
# This test confirms that we can inspect signal info using the
# $_siginfo convenience variable.
if [target_info exists gdb,nosignals] {
verbose "Skipping siginfo-obj.exp because of nosignals."
return
}
if { ![supports_get_siginfo_type] } {
verbose "Skipping siginfo-obj.exp because of lack of support."
return
}
standard_testfile
if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
return -1
}
# Advance to main
if ![runto_main] then {
return 0
}
# Run to the signal.
gdb_test "continue" ".*Program received signal SIGSEGV.*" \
"continue to signal, 1st"
# Try to generate a core file, for a later test.
set gcorefile [standard_output_file $testfile.gcore]
set gcore_created [gdb_gcore_cmd $gcorefile "save a core file"]
set ssi_addr ""
set test "extract si_addr"
gdb_test_multiple "p \$_siginfo" "$test" {
-re "si_addr = ($hex).*$gdb_prompt $" {
set ssi_addr $expect_out(1,string)
pass "$test"
}
}
set test "extract si_errno"
gdb_test_multiple "p \$_siginfo" "$test" {
-re "si_errno = (\[0-9\]\+).*$gdb_prompt $" {
set ssi_errno $expect_out(1,string)
pass "$test"
}
}
set test "extract si_code"
gdb_test_multiple "p \$_siginfo" "$test" {
-re "si_code = (\[0-9\]\+).*$gdb_prompt $" {
set ssi_code $expect_out(1,string)
pass "$test"
}
}
set test "extract si_signo"
gdb_test_multiple "p \$_siginfo" "$test" {
-re "si_signo = (\[0-9\]\+).*$gdb_prompt $" {
set ssi_signo $expect_out(1,string)
pass "$test"
}
}
set bp_location [gdb_get_line_number "set breakpoint here"]
with_test_prefix "validate siginfo fields" {
gdb_test "break $bp_location"
gdb_test "continue" ".* handler .*" "continue to handler"
gdb_test "p ssi_addr" " = \\(void \\*\\) $ssi_addr"
gdb_test "p ssi_errno" " = $ssi_errno"
gdb_test "p ssi_code" " = $ssi_code"
gdb_test "p ssi_signo" " = $ssi_signo"
}
# Again, but this time, patch si_addr and check that the inferior sees
# the changed value.
# Advance to main
if ![runto_main] then {
return 0
}
# Run to the signal.
gdb_test "continue" ".*Program received signal SIGSEGV.*" \
"continue to signal, 2nd"
set test "set si_addr"
gdb_test "p \$_siginfo._sifields._sigfault.si_addr = 0x666" " = \\(void \\*\\) 0x666"
gdb_test "p \$_siginfo.si_errno = 666" " = 666"
gdb_test "p \$_siginfo.si_code = 999" " = 999"
gdb_test "p \$_siginfo.si_signo = 11" " = 11"
with_test_prefix "validate modified siginfo fields" {
gdb_test "break $bp_location"
gdb_test "continue" ".* handler .*" "continue to handler"
gdb_test "p ssi_addr" " = \\(void \\*\\) 0x666"
gdb_test "p ssi_errno" " = 666"
gdb_test "p ssi_code" " = 999"
gdb_test "p ssi_signo" " = 11"
}
# Test siginfo preservation in core files.
if {$gcore_created} {
clean_restart $binfile
gdb_test "core $gcorefile" "Core was generated by.*" \
"core [file tail $gcorefile]"
gdb_test "p \$_siginfo.si_signo" " = $ssi_signo" \
"p \$_siginfo.si_signo from core file"
gdb_test "p \$_siginfo.si_errno" " = $ssi_errno" \
"p \$_siginfo.si_errno from core file"
gdb_test "p \$_siginfo.si_code" " = $ssi_code" \
"p \$_siginfo.si_code from core file"
gdb_test "p \$_siginfo._sifields._sigfault.si_addr" \
" = \\(void \\*\\) $ssi_addr" \
"p \$_siginfo._sifields._sigfault.si_addr from core file"
}
|
