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

   1 # Copyright 2008, 2010-2012 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,noinferiorio] {
  24     verbose "Skipping call-signal-resume.exp because of no fileio capabilities."
  25     continue
  26 }
  27
  28 if [target_info exists gdb,nosignals] {
  29     verbose "Skipping call-signal-resume.exp because of nosignals."
  30     continue
  31 }
  32
  33
  34 set testfile "call-signals"
  35 set srcfile ${testfile}.c
  36 set binfile ${objdir}/${subdir}/${testfile}
  37
  38 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  39      untested call-signal-resume.exp
  40      return -1
  41 }
  42
  43 # Some targets can't do function calls, so don't even bother with this
  44 # test.
  45 if [target_info exists gdb,cannot_call_functions] {
  46     setup_xfail "*-*-*" 2416
  47     fail "This target can not call functions"
  48     continue
  49 }
  50
  51 proc get_dummy_frame_number { } {
  52     global gdb_prompt
  53
  54     gdb_test_multiple "bt" "backtrace" {
  55         -re "#(\[0-9\]*) *<function called from gdb>.*$gdb_prompt $" {
  56             return $expect_out(1,string)
  57         }
  58     }
  59     return ""
  60 }
  61
  62 # Start with a fresh gdb.
  63
  64 gdb_exit
  65 gdb_start
  66 gdb_reinitialize_dir $srcdir/$subdir
  67 gdb_load ${binfile}
  68
  69 if { ![runto_main] } {
  70     fail "Can't run to main"
  71     return 0
  72 }
  73
  74 gdb_test "break stop_one" "Breakpoint \[0-9\]* at .*"
  75 gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, stop_one.*" \
  76     "continue to breakpoint at stop_one"
  77
  78 # Call function (causing the program to get a signal), and see if gdb handles
  79 # it properly.
  80 gdb_test_multiple "call gen_signal ()" \
  81         "inferior function call signaled" {
  82     -re "\[\r\n\]*no signal\[\r\n\]+$gdb_prompt $" {
  83         unsupported "inferior function call signaled"
  84         return 0
  85     }
  86     -re "\[\r\n\]*The program being debugged was signaled.*\[\r\n\]+$gdb_prompt $" {
  87         pass "inferior function call signaled"
  88     }
  89 }
  90
  91 set frame_number [get_dummy_frame_number]
  92 if { "$frame_number" == "" } {
  93     fail "dummy stack frame number"
  94     setup_xfail "*-*-*"
  95 } else {
  96     pass "dummy stack frame number"
  97 }
  98
  99 # Pop the dummy frame.
 100 gdb_test "frame $frame_number" ".*"
 101 gdb_test_no_output "set confirm off"
 102 gdb_test "return" ""
 103
 104 # Resume execution, the program should continue without any signal.
 105
 106 gdb_test "break stop_two" "Breakpoint \[0-9\]* at .*"
 107 gdb_test "continue" "Breakpoint \[0-9\]*, stop_two.*" \
 108     "continue to breakpoint at stop_two"
 109
 110 # Continue again, we should get a signal.
 111
 112 gdb_test "continue" "Program received signal .*" \
 113     "continue to receipt of signal"
 114
 115 # Hand call another function that prematurely stops,
 116 # then manually pop the dummy stack frame.
 117
 118 gdb_test "break null_hand_call" "Breakpoint \[0-9\]* at .*"
 119 gdb_test "call null_hand_call ()" "Breakpoint \[0-9\]*, null_hand_call.*" \
 120     "null_hand_call"
 121
 122 set frame_number [get_dummy_frame_number]
 123 if { "$frame_number" == "" } {
 124     fail "dummy stack frame number"
 125     setup_xfail "*-*-*"
 126     # Need something.
 127     set frame_number 0
 128 } else {
 129     pass "dummy stack frame number"
 130 }
 131
 132 # Pop the dummy frame.
 133 gdb_test "frame $frame_number" ".*"
 134 gdb_test_no_output "set confirm off"
 135 gdb_test "return" ""
 136
 137 # Continue again, this time we should get to the signal handler.
 138
 139 gdb_test "break handle_signal" "Breakpoint \[0-9\]* at .*"
 140 gdb_test "continue" "Breakpoint \[0-9\]*, handle_signal.*" \
 141     "continue to breakpoint at handle_signal"
 142
 143 # Continue one last time, the program should exit normally.
 144
 145 gdb_test "continue" "$inferior_exited_re normally." \
 146     "continue to program exit"
 147
 148 return 0