1 # Copyright 1997-2024 Free Software Foundation, Inc.
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.
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.
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/>.
16 # display.exp Test display commands
17 # Also do some printing stuff for coverage's sake.
20 # The allow_hw_watchpoint_tests checks if watchpoints are supported by the
21 # processor. On PowerPC, the check runs a small test program under gdb
22 # to determine if the Power processor supports HW watchpoints. The check
23 # must be done before starting the test so as to not disrupt the execution
26 set allow_hw_watchpoint_tests_p [allow_hw_watchpoint_tests]
30 if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
31 {debug nowarnings}]} {
35 # Preserve the old timeout, and set a new one that should be
36 # sufficient to avoid timing out during this test.
37 set oldtimeout $timeout
38 set timeout [expr "$timeout + 60"]
39 verbose "Timeout is now $timeout seconds" 2
47 gdb_test "kill" ".*The program is not being run.*"
48 gdb_test "detach" ".*"
52 gdb_test "kill" ".*" "kill again"
53 gdb_test "detach" ".*" "detach again"
55 clean_restart $binfile
64 # Disable hardware watchpoints if necessary.
65 if {!$allow_hw_watchpoint_tests_p} {
66 gdb_test_no_output "set can-use-hw-watchpoints 0" ""
69 set bp_location1 [gdb_get_line_number "set breakpoint 1 here"]
70 gdb_test "break $bp_location1" ".*Breakpoint 2.*" "break do_loops"
71 gdb_test "cont" ".*Breakpoint 2, do_loops.*" "get to do_loops"
73 # Create stopping points.
75 gdb_test "watch sum" ".*\[Ww\]atchpoint 3: sum.*" "set watch"
76 set bp_location2 [gdb_get_line_number "set breakpoint 2 here"]
77 gdb_test "break $bp_location2" ".*Breakpoint 4.*" "break loop end"
79 # Create displays for those points
81 gdb_test "info disp" ".*There are no auto-display expressions now..*" "inf disp"
82 gdb_test "disp i" ".*1: i = 0.*" "display i"
83 gdb_test "disp/x j" ".*2: /x j = 0x0.*" "display j"
84 gdb_test "disp/i &k" ".*3: x/i &k(\r\n| ) $hex:.*" "display &k"
85 gdb_test "disp/f f" ".*4: /f f = 3.1415*" "display/f f"
86 gdb_test "disp/s &sum" ".*5: x/s &sum $hex.*sum.:.*" "display/s &sum"
90 gdb_test "cont" [multi_line \
91 ".*\[Ww\]atchpoint 3: sum.*" \
93 "\[1-9\]*: /x j = 0x0" \
94 "\[1-9\]*: x/i &k.*" \
95 "\[1-9\]*: /f f = 3.1415" \
96 "\[1-9\]*: x/s &sum.*" \
99 gdb_test "cont" [multi_line \
100 ".*\[Ww\]atchpoint 3: sum.*" \
101 "\[1-9\]*: i = 0.*" \
102 "\[1-9\]*: /x j = 0x0.*" \
103 "\[1-9\]*: x/i &k.*" \
104 "\[1-9\]*: /f f = 4.1415" \
105 "\[1-9\]*: x/s &sum.*" \
108 gdb_test "enab disp 6" ".*No display number 6..*" "catch err"
109 gdb_test_no_output "disab disp 1" "disab disp 1"
110 gdb_test_no_output "disab disp 2" "disab disp 2"
111 gdb_test_no_output "enab disp 1" "re-enab"
112 gdb_test_no_output "enab disp 1" "re-enab of enab"
113 gdb_test_no_output "undisp 5" "undisp"
114 gdb_test "info disp" [multi_line \
115 "Auto-display expressions now in effect.*" \
122 gdb_test "cont" [multi_line \
131 ".*Delete all auto-display expressions.*y or n. $" \
135 # Test displaying a variable that is temporarily at a bad address.
136 # But if we can examine what's at memory address 0, then we'll also be
137 # able to display it without error. Don't run the test in that case.
138 set can_read_0 [is_address_zero_readable]
140 if { !$can_read_0 } {
141 gdb_test "disp *p_i" ".*: \\*p_i = 0"
142 gdb_test "p p_i = 0x0" " = \\(int \\*\\) 0x0"
143 gdb_test "display" ".*: \\*p_i = <error: .*>" "display bad address"
144 gdb_test "p p_i = &i" " = \\(int \\*\\) $hex"
145 gdb_test "display" ".*: \\*p_i = 0" "display good address"
150 ".*Delete all auto-display expressions.*y or n. $" \
154 gdb_test "disab 3" ".*.*"
155 gdb_test "cont" ".*Breakpoint 4.*" "watch off"
157 # Now the printf tests
159 # The "finish" command may leave us mid-line in the caller on some
160 # targets, including but not limited to the m68k, i386 & PA. So we
161 # have to arrange to step until we hit the line with the call to
163 gdb_test_multiple "finish" "finish" {
164 -re ".*do_loops\\(\\);.*$gdb_prompt $" {
168 -re ".*do_vars.*$gdb_prompt $" {
173 gdb_test "step" ".*do_vars.*.*i = 9.*"
174 set bp_location3 [gdb_get_line_number "set breakpoint 3 here"]
175 gdb_test "tbreak $bp_location3" ".*breakpoint 5 a.*" "tbreak in do_vars"
176 gdb_test "cont" ".*do_vars.*$bp_location3.*$bp_location3.*"
178 # Beat on printf a bit
180 gdb_test "printf" ".*Argument required.*"
181 gdb_test "printf %d" ".*Bad format string, missing.*"
182 gdb_test "printf \"%d" ".*Bad format string, non-terminated.*"
183 gdb_test "printf \"%d%d\",i" ".*Wrong number of arguments.*"
184 gdb_test "printf \"\\\\!\\a\\f\\r\\t\\v\\b\\n\"" ".*!.*"
185 gdb_test_no_output "printf \"\"" "re-set term"
186 gdb_test "printf \"\\w\"" ".*Unrecognized escape character.*"
187 gdb_test "printf \"%d\" j" ".*Invalid argument syntax.*"
188 gdb_test "printf \"%p\\n\", 0" "\\(nil\\)"
189 gdb_test "printf \"%p\\n\", 1" "0x1"
191 # play with "print", too
193 gdb_test "print/k j" ".*Undefined output format.*"
194 gdb_test "print/d j" " = 0" "debug test output 1"
195 gdb_test "print/r j" " = 0" "debug test output 1a"
196 gdb_test "print/x j" " = 0x0" "debug test output 2"
197 gdb_test "print/r j" " = 0x0" "debug test output 2a"
198 gdb_test "print j" " = 0" "debug test output 3"
200 # x/0 j doesn't produce any output and terminates PA64 process when testing
201 gdb_test_no_output "x/0 j"
203 # For when the test is built in C++ mode.
204 gdb_test_no_output "set print asm-demangle on"
206 gdb_test "print/0 j" ".*Item count other than 1 is meaningless.*"
207 gdb_test "print/s sum" " = 1000" "ignored s"
208 gdb_test "print/i sum" ".*Format letter.*is meaningless.*.*" "no i"
209 gdb_test "print/a &sum" ".*= $hex.*<sum>.*"
210 # If the constant below is larger than the length of main, then
211 # this test will (incorrectly) fail. So use a small number.
212 gdb_test "print/a main+4" ".*= $hex.*<.*>.*"
213 gdb_test "print/a \$pc" ".*= $hex.*<do_vars+.*>.*"
214 gdb_test "print/a &&j" ".*A .* error in expression.*"
220 # Restore the preserved old timeout value.
221 set timeout $oldtimeout
222 verbose "Timeout is now $timeout seconds" 2