gdb/testsuite/gdb.base/call-signal-resume.exp

   1 # Copyright 2008-2021 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 # Test inferior resumption after discarding a hand-called function.
  17 # There are two things to test.
  18 # 1) Inferior stops normally.  Upon resumption it should continue normally,
  19 #    regardless of whatever signal the hand-called function got.
  20 # 2) Inferior is stopped at a signal.  Upon resumption it should continue
  21 #    with that signal, regardless of whatever the hand-called function did.
  22
  23 if [target_info exists gdb,nosignals] {
  24     verbose "Skipping call-signal-resume.exp because of nosignals."
  25     continue
  26 }
  27
  28
  29 standard_testfile call-signals.c
  30
  31 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  32      untested "failed to compile"
  33      return -1
  34 }
  35
  36 # Some targets can't do function calls, so don't even bother with this
  37 # test.
  38 if [target_info exists gdb,cannot_call_functions] {
  39     unsupported "this target can not call functions"
  40     continue
  41 }
  42
  43 proc get_dummy_frame_number { } {
  44     global gdb_prompt
  45
  46     gdb_test_multiple "bt" "backtrace" {
  47         -re "#(\[0-9\]*) *<function called from gdb>.*$gdb_prompt $" {
  48             return $expect_out(1,string)
  49         }
  50     }
  51     return ""
  52 }
  53
  54 # Start with a fresh gdb.
  55
  56 clean_restart ${binfile}
  57
  58 if { ![runto_main] } {
  59     fail "can't run to main"
  60     return 0
  61 }
  62
  63 gdb_test "break stop_one" "Breakpoint \[0-9\]* at .*"
  64 gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, stop_one.*" \
  65     "continue to breakpoint at stop_one"
  66
  67 # Call function (causing the program to get a signal), and see if gdb handles
  68 # it properly.
  69 if {[gdb_test "call gen_signal ()"  \
  70          "\[\r\n\]*The program being debugged was signaled.*" \
  71          "inferior function call signaled"] != 0} {
  72     return 0
  73 }
  74
  75 set frame_number [get_dummy_frame_number]
  76 if { "$frame_number" == "" } {
  77     fail "dummy stack frame number"
  78     setup_xfail "*-*-*"
  79 } else {
  80     pass "dummy stack frame number"
  81 }
  82
  83 # Pop the dummy frame.
  84 gdb_test "frame $frame_number" ".*"
  85 gdb_test_no_output "set confirm off"
  86 gdb_test "return" ""
  87
  88 # Verify there are no remains of the dummy frame.
  89 gdb_test_no_output "maintenance print dummy-frames"
  90 set test "maintenance info breakpoints"
  91 gdb_test_multiple $test $test {
  92     -re " call dummy .*\r\n$gdb_prompt $" {
  93         fail $test
  94     }
  95     -re "\r\n$gdb_prompt $" {
  96         pass $test
  97     }
  98 }
  99
 100 # Resume execution, the program should continue without any signal.
 101
 102 gdb_test "break stop_two" "Breakpoint \[0-9\]* at .*"
 103 gdb_test "continue" "Breakpoint \[0-9\]*, stop_two.*" \
 104     "continue to breakpoint at stop_two"
 105
 106 # Continue again, we should get a signal.
 107
 108 gdb_test "continue" "Program received signal .*" \
 109     "continue to receipt of signal"
 110
 111 # Hand call another function that prematurely stops,
 112 # then manually pop the dummy stack frame.
 113
 114 gdb_test "break null_hand_call" "Breakpoint \[0-9\]* at .*"
 115 gdb_test "call null_hand_call ()" "Breakpoint \[0-9\]*, null_hand_call.*" \
 116     "null_hand_call"
 117
 118 set frame_number [get_dummy_frame_number]
 119 if { "$frame_number" == "" } {
 120     fail "dummy stack frame number"
 121     setup_xfail "*-*-*"
 122     # Need something.
 123     set frame_number 0
 124 } else {
 125     pass "dummy stack frame number"
 126 }
 127
 128 # Pop the dummy frame.
 129 gdb_test "frame $frame_number" ".*"
 130 gdb_test_no_output "set confirm off"
 131 gdb_test "return" ""
 132
 133 # Continue again, this time we should get to the signal handler.
 134
 135 gdb_test "break handle_signal" "Breakpoint \[0-9\]* at .*"
 136 gdb_test "continue" "Breakpoint \[0-9\]*, handle_signal.*" \
 137     "continue to breakpoint at handle_signal"
 138
 139 # Continue one last time, the program should exit normally.
 140
 141 gdb_test "continue" "$inferior_exited_re normally." \
 142     "continue to program exit"
 143
 144 return 0