| 1 | # Copyright 1997-2017 Free Software Foundation, Inc. |
| 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 is a test of gdb's follow-exec-mode. |
| 17 | # |
| 18 | # It first checks that exec events are supported by using a catchpoint, |
| 19 | # then tests multiple scenarios for follow-exec-mode using parameters |
| 20 | # that test: |
| 21 | # - each mode |
| 22 | # - different commands to execute past the exec |
| 23 | # - re-running both the original and new inferiors. |
| 24 | # |
| 25 | # Note that we can't single-step past an exec call. There has to |
| 26 | # be a breakpoint in order to stop after the exec, even if we use |
| 27 | # a single-step command to execute past the exec. |
| 28 | |
| 29 | # Remote mode doesn't support the 'run' command, which is |
| 30 | # required for follow-exec-mode testing. |
| 31 | if { [target_info exists gdb_protocol] |
| 32 | && [target_info gdb_protocol] == "remote" } { |
| 33 | continue |
| 34 | } |
| 35 | |
| 36 | # Until "catch exec" is implemented on other targets... |
| 37 | # |
| 38 | if {![istarget "*-linux*"]} then { |
| 39 | continue |
| 40 | } |
| 41 | |
| 42 | standard_testfile foll-exec-mode.c |
| 43 | |
| 44 | set testfile2 "execd-prog" |
| 45 | set srcfile2 ${testfile2}.c |
| 46 | set binfile2 [standard_output_file ${testfile2}] |
| 47 | |
| 48 | set compile_options debug |
| 49 | |
| 50 | # build the first test case |
| 51 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable $compile_options] != "" } { |
| 52 | untested "failed to compile" |
| 53 | return -1 |
| 54 | } |
| 55 | |
| 56 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable $compile_options] != "" } { |
| 57 | untested "failed to compile" |
| 58 | return -1 |
| 59 | } |
| 60 | |
| 61 | # Test exec catchpoints to ensure exec events are supported. |
| 62 | # |
| 63 | proc do_catch_exec_test { } { |
| 64 | global testfile |
| 65 | global gdb_prompt |
| 66 | |
| 67 | clean_restart $testfile |
| 68 | |
| 69 | # Start the program running, and stop at main. |
| 70 | # |
| 71 | if ![runto_main] then { |
| 72 | fail "couldn't run ${testfile}" |
| 73 | return |
| 74 | } |
| 75 | |
| 76 | # Verify that the system supports "catch exec". |
| 77 | gdb_test "catch exec" "Catchpoint \[0-9\]* \\(exec\\)" "insert first exec catchpoint" |
| 78 | set has_exec_catchpoints 0 |
| 79 | gdb_test_multiple "continue" "continue to first exec catchpoint" { |
| 80 | -re ".*Your system does not support this type\r\nof catchpoint.*$gdb_prompt $" { |
| 81 | unsupported "continue to first exec catchpoint" |
| 82 | } |
| 83 | -re ".*Catchpoint.*$gdb_prompt $" { |
| 84 | set has_exec_catchpoints 1 |
| 85 | pass "continue to first exec catchpoint" |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | if {$has_exec_catchpoints == 0} { |
| 90 | unsupported "exec catchpoints" |
| 91 | return |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | # Test follow-exec-mode in the specified scenario. |
| 96 | # MODE determines whether follow-exec-mode is "same" or "new". |
| 97 | # CMD determines the command used to execute past the exec call. |
| 98 | # INFSWITCH is ignored for MODE == "same", and for "new" it is |
| 99 | # used to determine whether to switch to the original inferior |
| 100 | # before re-running. |
| 101 | |
| 102 | proc do_follow_exec_mode_tests { mode cmd infswitch } { |
| 103 | global binfile srcfile srcfile2 testfile testfile2 |
| 104 | global gdb_prompt |
| 105 | |
| 106 | with_test_prefix "$mode,$cmd,$infswitch" { |
| 107 | clean_restart $testfile |
| 108 | |
| 109 | # Start the program running, and stop at main. |
| 110 | # |
| 111 | if ![runto_main] then { |
| 112 | fail "couldn't run ${testfile}" |
| 113 | return |
| 114 | } |
| 115 | |
| 116 | # Set the follow-exec mode. |
| 117 | # |
| 118 | gdb_test_no_output "set follow-exec-mode $mode" |
| 119 | |
| 120 | # Run to the line of the exec call. |
| 121 | # |
| 122 | gdb_breakpoint [gdb_get_line_number "Set breakpoint here"] |
| 123 | gdb_continue_to_breakpoint "continue to line of exec call" |
| 124 | |
| 125 | # Set up the output we expect to see after we execute past the exec. |
| 126 | # |
| 127 | set execd_line [gdb_get_line_number "after-exec" $srcfile2] |
| 128 | set expected_re ".*xecuting new program: .*${testfile2}.*Breakpoint .,.*${srcfile2}:${execd_line}.*$gdb_prompt $" |
| 129 | |
| 130 | # Set a breakpoint after the exec call if we aren't single-stepping |
| 131 | # past it. |
| 132 | # |
| 133 | if {$cmd == "continue"} { |
| 134 | gdb_breakpoint "$execd_line" |
| 135 | } |
| 136 | |
| 137 | # Execute past the exec call. |
| 138 | # |
| 139 | set test "$cmd past exec" |
| 140 | gdb_test_multiple $cmd $test { |
| 141 | -re "$expected_re" { |
| 142 | pass $test |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | # Set expected output, given the test parameters. |
| 147 | # |
| 148 | if {$mode == "same"} { |
| 149 | set expected_re "\\* 1.*process.*" |
| 150 | } else { |
| 151 | set expected_re " 1.*null.*$testfile.*\r\n\\* 2.*process.*$testfile2 .*" |
| 152 | } |
| 153 | |
| 154 | # Check that the inferior list is correct: |
| 155 | # - one inferior for MODE == "same" |
| 156 | # - two inferiors for MODE == "new", current is execd program |
| 157 | # |
| 158 | gdb_test "info inferiors" $expected_re "Check inferior list" |
| 159 | |
| 160 | set expected_inf "" |
| 161 | if {$mode == "same"} { |
| 162 | # One inferior, the execd program. |
| 163 | set expected_inf $testfile2 |
| 164 | } elseif {$infswitch == "infswitch"} { |
| 165 | # Two inferiors, we have switched to the original program. |
| 166 | set expected_inf $testfile |
| 167 | gdb_test "inferior 1" "Switching to inferior 1.*$testfile.*" "switch inferiors" |
| 168 | } else { |
| 169 | # Two inferiors, run the execd program |
| 170 | set expected_inf $testfile2 |
| 171 | } |
| 172 | |
| 173 | # Now check that a 'run' command will run the correct inferior. |
| 174 | # |
| 175 | set test "use correct executable ($expected_inf) for run after follow exec" |
| 176 | gdb_run_cmd |
| 177 | gdb_test_multiple "" $test { |
| 178 | -re {Start it from the beginning\? \(y or n\) $} { |
| 179 | send_gdb "y\n" |
| 180 | exp_continue |
| 181 | } |
| 182 | -re "Starting program: .*$expected_inf.*Breakpoint .,.*\r\n$gdb_prompt $" { |
| 183 | pass $test |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | do_catch_exec_test |
| 190 | |
| 191 | foreach cmd {"next" "continue"} { |
| 192 | foreach mode {"same" "new"} { |
| 193 | # Test basic follow-exec-mode. |
| 194 | do_follow_exec_mode_tests $mode $cmd "no_infswitch" |
| 195 | if {$mode == "new"} { |
| 196 | # Test that when we do 'run' we get the correct executable. |
| 197 | do_follow_exec_mode_tests $mode $cmd "infswitch" |
| 198 | } |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | return 0 |