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618f726f | 1 | # Copyright 2014-2016 Free Software Foundation, Inc. |
bb9d5f81 PP |
2 | |
3 | # This program is free software; you can redistribute it and/or modify | |
4 | # it under the terms of the GNU General Public License as published by | |
5 | # the Free Software Foundation; either version 3 of the License, or | |
6 | # (at your option) any later version. | |
7 | # | |
8 | # This program is distributed in the hope that it will be useful, | |
9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | # GNU General Public License for more details. | |
12 | # | |
13 | # You should have received a copy of the GNU General Public License | |
14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
15 | ||
16 | # This file is part of the gdb testsuite | |
17 | ||
18 | standard_testfile | |
19 | ||
91c19059 | 20 | if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} { |
bb9d5f81 PP |
21 | return -1 |
22 | } | |
23 | ||
91c19059 SDJ |
24 | # Set a watchpoint watching EXPR. |
25 | proc watch { expr } { | |
26 | global decimal | |
27 | ||
28 | set expr_re [string_to_regexp $expr] | |
29 | gdb_test "watch $expr" \ | |
30 | "\(Hardware \)?\[Ww\]atchpoint $decimal: $expr_re" | |
bb9d5f81 PP |
31 | } |
32 | ||
33 | # Continue inferior execution, expecting the watchpoint EXPR to be triggered | |
34 | # having old value OLD and new value NEW. | |
35 | proc expect_watchpoint { expr old new } { | |
91c19059 SDJ |
36 | with_test_prefix "$expr: $old->$new" { |
37 | set expr_re [string_to_regexp $expr] | |
38 | gdb_test "print $expr" "\\$\\d+ = $old\\s" "print expression before" | |
39 | gdb_test "continue" "$expr_re\\s.*Old value = $old\\s+New value = $new\\s.*" | |
40 | gdb_test "print $expr" "\\$\\d+ = $new\\s" "print expression after" | |
41 | } | |
bb9d5f81 PP |
42 | } |
43 | ||
44 | # Check that -location watchpoints against bitfields trigger properly. | |
91c19059 SDJ |
45 | proc test_watch_location {} { |
46 | with_test_prefix "-location watch against bitfields" { | |
47 | if {![runto_main]} { | |
48 | return -1 | |
49 | } | |
50 | ||
51 | watch "-location q.a" | |
52 | watch "-location q.e" | |
53 | expect_watchpoint "q.a" 0 1 | |
54 | expect_watchpoint "q.e" 0 5 | |
55 | expect_watchpoint "q.a" 1 0 | |
56 | expect_watchpoint "q.e" 5 4 | |
45fd756c YQ |
57 | |
58 | # It'll execute a large amount of code with software watchpoint | |
59 | # enabled, which means GDB will single stepping all the way | |
60 | # through til the inferior exits. Increase the timeout by a | |
61 | # factor of 4. | |
62 | with_timeout_factor 4 { | |
63 | gdb_continue_to_end | |
64 | } | |
91c19059 SDJ |
65 | } |
66 | } | |
67 | ||
68 | # Check that regular watchpoints against expressions involving | |
69 | # bitfields trigger properly. | |
70 | proc test_regular_watch {} { | |
71 | with_test_prefix "regular watch against bitfields" { | |
72 | if {![runto_main]} { | |
73 | return -1 | |
74 | } | |
75 | ||
76 | watch "q.d + q.f + q.g" | |
77 | expect_watchpoint "q.d + q.f + q.g" 0 4 | |
78 | expect_watchpoint "q.d + q.f + q.g" 4 10 | |
79 | expect_watchpoint "q.d + q.f + q.g" 10 3 | |
80 | expect_watchpoint "q.d + q.f + q.g" 3 2 | |
81 | expect_watchpoint "q.d + q.f + q.g" 2 1 | |
82 | expect_watchpoint "q.d + q.f + q.g" 1 0 | |
45fd756c YQ |
83 | |
84 | # It'll execute a large amount of code with software watchpoint | |
85 | # enabled, which means GDB will single stepping all the way | |
86 | # through til the inferior exits. Increase the timeout by a | |
87 | # factor of 4. | |
88 | with_timeout_factor 4 { | |
89 | gdb_continue_to_end | |
90 | } | |
91c19059 SDJ |
91 | } |
92 | } | |
93 | ||
f24a38c5 LM |
94 | # Disable hardware watchpoints if the target does not support them. |
95 | if [target_info exists gdb,no_hardware_watchpoints] { | |
96 | gdb_test_no_output "set can-use-hw-watchpoints 0" | |
97 | } | |
98 | ||
91c19059 SDJ |
99 | test_watch_location |
100 | test_regular_watch |