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

   1 # Copyright 2008 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 $tracelevel then {
  24         strace $tracelevel
  25 }
  26
  27 if [target_info exists gdb,noinferiorio] {
  28     verbose "Skipping call-signal-resume.exp because of no fileio capabilities."
  29     continue
  30 }
  31
  32 set prms_id 0
  33 set bug_id 0
  34
  35 set testfile "call-signals"
  36 set srcfile ${testfile}.c
  37 set binfile ${objdir}/${subdir}/${testfile}
  38
  39 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  40      untested call-signal-resume.exp
  41      return -1
  42 }
  43
  44 # Some targets can't do function calls, so don't even bother with this
  45 # test.
  46 if [target_info exists gdb,cannot_call_functions] {
  47     setup_xfail "*-*-*" 2416
  48     fail "This target can not call functions"
  49     continue
  50 }
  51
  52 proc get_dummy_frame_number { } {
  53   global gdb_prompt
  54
  55   send_gdb "bt\n"
  56   gdb_expect {
  57     -re "#(\[0-9\]*) *<function called from gdb>.*$gdb_prompt $"
  58       {
  59         return $expect_out(1,string)
  60       }
  61     -re "$gdb_prompt $"
  62       {
  63         return ""
  64       }
  65     timeout
  66       {
  67         return ""
  68       }
  69   }
  70   return ""
  71 }
  72
  73 # Start with a fresh gdb.
  74
  75 gdb_exit
  76 gdb_start
  77 gdb_reinitialize_dir $srcdir/$subdir
  78 gdb_load ${binfile}
  79
  80 if { ![runto_main] } {
  81     fail "Can't run to main"
  82     return 0
  83 }
  84
  85 gdb_test "break stop_one" "Breakpoint \[0-9\]* at .*"
  86 gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, stop_one.*" \
  87     "continue to breakpoint at stop_one"
  88
  89 # Call function (causing the program to get a signal), and see if gdb handles
  90 # it properly.
  91 gdb_test_multiple "call gen_signal ()" \
  92         "inferior function call signaled" {
  93     -re "\[\r\n\]*no signal\[\r\n\]+$gdb_prompt $" {
  94         unsupported "inferior function call signaled"
  95         return 0
  96     }
  97     -re "\[\r\n\]*The program being debugged was signaled.*\[\r\n\]+$gdb_prompt $" {
  98         pass "inferior function call signaled"
  99     }
 100 }
 101
 102 set frame_number [get_dummy_frame_number]
 103 if { "$frame_number" == "" } {
 104     fail "dummy stack frame number"
 105     setup_xfail "*-*-*"
 106 } else {
 107     pass "dummy stack frame number"
 108 }
 109
 110 # Pop the dummy frame.
 111 gdb_test "frame $frame_number" ""
 112 gdb_test "set confirm off" ""
 113 gdb_test "return" ""
 114
 115 # Resume execution, the program should continue without any signal.
 116
 117 gdb_test "break stop_two" "Breakpoint \[0-9\]* at .*"
 118 gdb_test "continue" "Breakpoint \[0-9\]*, stop_two.*" \
 119     "continue to breakpoint at stop_two"
 120
 121 # Continue again, we should get a signal.
 122
 123 gdb_test "continue" "Program received signal .*" \
 124     "continue to receipt of signal"
 125
 126 # Hand call another function that prematurely stops,
 127 # then manually pop the dummy stack frame.
 128
 129 gdb_test "break null_hand_call" "Breakpoint \[0-9\]* at .*"
 130 gdb_test "call null_hand_call ()" "Breakpoint \[0-9\]*, null_hand_call.*" \
 131     "null_hand_call"
 132
 133 set frame_number [get_dummy_frame_number]
 134 if { "$frame_number" == "" } {
 135     fail "dummy stack frame number"
 136     setup_xfail "*-*-*"
 137     # Need something.
 138     set frame_number 0
 139 } else {
 140     pass "dummy stack frame number"
 141 }
 142
 143 # Pop the dummy frame.
 144 gdb_test "frame $frame_number" ""
 145 gdb_test "set confirm off" ""
 146 gdb_test "return" ""
 147
 148 # Continue again, this time we should get to the signal handler.
 149
 150 gdb_test "break handle_signal" "Breakpoint \[0-9\]* at .*"
 151 gdb_test "continue" "Breakpoint \[0-9\]*, handle_signal.*" \
 152     "continue to breakpoint at handle_signal"
 153
 154 # Continue one last time, the program should exit normally.
 155
 156 gdb_test "continue" "Program exited normally." \
 157     "continue to program exit"
 158
 159 return 0