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

   1 # Copyright 2008-2023 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 require {!target_info exists gdb,nosignals}
  24
  25 # Some targets can't do function calls, so don't even bother with this
  26 # test.
  27 require {!target_info exists gdb,cannot_call_functions}
  28
  29
  30 standard_testfile call-signals.c
  31
  32 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  33      untested "failed to compile"
  34      return -1
  35 }
  36
  37 proc get_dummy_frame_number { } {
  38     global gdb_prompt
  39
  40     gdb_test_multiple "bt" "backtrace" {
  41         -re "#(\[0-9\]*) *<function called from gdb>.*$gdb_prompt $" {
  42             return $expect_out(1,string)
  43         }
  44     }
  45     return ""
  46 }
  47
  48 # Start with a fresh gdb.
  49
  50 clean_restart ${binfile}
  51
  52 if { ![runto_main] } {
  53     return 0
  54 }
  55
  56 gdb_test "break stop_one" "Breakpoint \[0-9\]* at .*"
  57 gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, stop_one.*" \
  58     "continue to breakpoint at stop_one"
  59
  60 # Call function (causing the program to get a signal), and see if gdb handles
  61 # it properly.
  62 if {[gdb_test "call gen_signal ()"  \
  63          "\[\r\n\]*The program being debugged was signaled.*" \
  64          "inferior function call signaled"] != 0} {
  65     return 0
  66 }
  67
  68 set frame_number [get_dummy_frame_number]
  69 if { "$frame_number" == "" } {
  70     fail "dummy stack frame number"
  71     setup_xfail "*-*-*"
  72 } else {
  73     pass "dummy stack frame number"
  74 }
  75
  76 # Pop the dummy frame.
  77 gdb_test "frame $frame_number" ".*"
  78 gdb_test_no_output "set confirm off"
  79 gdb_test "return" ""
  80
  81 # Verify there are no remains of the dummy frame.
  82 gdb_test_no_output "maintenance print dummy-frames"
  83 set test "maintenance info breakpoints"
  84 gdb_test_multiple $test $test {
  85     -re " call dummy .*\r\n$gdb_prompt $" {
  86         fail $test
  87     }
  88     -re "\r\n$gdb_prompt $" {
  89         pass $test
  90     }
  91 }
  92
  93 # Resume execution, the program should continue without any signal.
  94
  95 gdb_test "break stop_two" "Breakpoint \[0-9\]* at .*"
  96 gdb_test "continue" "Breakpoint \[0-9\]*, stop_two.*" \
  97     "continue to breakpoint at stop_two"
  98
  99 # Continue again, we should get a signal.
 100
 101 gdb_test "continue" "Program received signal .*" \
 102     "continue to receipt of signal"
 103
 104 # Hand call another function that prematurely stops,
 105 # then manually pop the dummy stack frame.
 106
 107 gdb_test "break null_hand_call" "Breakpoint \[0-9\]* at .*"
 108 gdb_test "call null_hand_call ()" "Breakpoint \[0-9\]*, null_hand_call.*" \
 109     "null_hand_call"
 110
 111 set frame_number [get_dummy_frame_number]
 112 if { "$frame_number" == "" } {
 113     fail "dummy stack frame number, two"
 114     setup_xfail "*-*-*"
 115     # Need something.
 116     set frame_number 0
 117 } else {
 118     pass "dummy stack frame number, two"
 119 }
 120
 121 # Pop the dummy frame.
 122 gdb_test "frame $frame_number" ".*"
 123 gdb_test "return" "" "return, two"
 124
 125 # Continue again, this time we should get to the signal handler.
 126
 127 gdb_test "break handle_signal" "Breakpoint \[0-9\]* at .*"
 128 gdb_test "continue" "Breakpoint \[0-9\]*, handle_signal.*" \
 129     "continue to breakpoint at handle_signal"
 130
 131 # Continue one last time, the program should exit normally.
 132
 133 gdb_test "continue" "$inferior_exited_re normally." \
 134     "continue to program exit"