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
|
# Copyright 2010 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/>.
# Test single stepping over Thumb-2 IT blocks.
if {![istarget arm*-*eabi*]} then {
verbose "Skipping Thumb-2 tests."
return
}
set testfile "thumb2-it"
set srcfile ${testfile}.S
set binfile ${objdir}/${subdir}/${testfile}
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable debug] != "" } {
untested thumb2-it.exp
return -1
}
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}
if ![runto_main] then {
untested thumb2-it.exp
return -1
}
# Make sure that the compiler options allow Thumb-2.
gdb_test_multiple "list" "list main" {
-re ".*@ No Thumb-2.*$gdb_prompt $" {
pass "list main"
untested thumb2-it.exp
return -1
}
-re ".*@ Thumb-2 OK.*$gdb_prompt $" {
pass "list main"
}
}
proc test_it_block { func } {
global gdb_prompt
global software_step
if { ! [gdb_breakpoint "*${func}"] } {
unresolved "$func, IT block tests"
return
}
gdb_test "call ${func}()" "Breakpoint.*@ Setup.*" "$func, call"
set expected 0
set reached 0
set steps 0
set ok 1
while { $ok } {
set ok 0
set msg "$func, stepi $steps"
gdb_test_multiple "stepi" "$msg" {
-re ".*@ Setup.*$gdb_prompt $" {
pass "$msg"
set ok 1
}
-re ".*@ IT instruction, Expected == (\[0-9\]*)\r\n$gdb_prompt $" {
set expected $expect_out(1,string)
pass "$msg"
set ok 1
}
-re ".*@ Reached.*$gdb_prompt $" {
incr reached
pass "$msg"
set ok 1
if { [regexp {@ Reached, Set ([^\r\n]*)\r\n} $expect_out(0,string) dummy change] } {
gdb_test "set $change" "" "$func, set $change"
}
}
-re ".*@ Not reached.*$gdb_prompt $" {
# An instruction in an IT block whose predicate is false when
# we reach it. If using software single step, we should not
# stop here.
if { $software_step } {
fail "$msg"
} else {
pass "$msg"
set ok 1
}
}
-re ".*@ Never reached.*$gdb_prompt $" {
# An instruction that should be branched over.
fail "$msg"
}
-re ".*@ Done.*$gdb_prompt $" {
pass "$msg"
if { $reached == $expected } {
pass "$func, correct instructions reached"
} else {
fail "$func, correct instructions reached"
}
if { [regexp {@ Done, Check ([^\r\n]*)\r\n} $expect_out(0,string) dummy check] } {
gdb_test "print $check" ".* = 1" "$func, $check"
}
}
}
if { ! $ok } {
break
}
incr steps
continue
}
gdb_test "continue" "" "$func, continue"
return
}
# If we are using software single-stepping in GDB, then GDB will not
# stop at conditional instructions with a false predicate during stepi.
# If we are using a simulator or debug interface with hardware single
# step, then GDB will stop at such instructions.
if { [istarget arm*-linux*] } {
set software_step 1
} else {
set software_step 0
}
for { set i 1 } { $i <= 8 } { incr i } {
test_it_block it_${i}
}
|
