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

   1 # Copyright 2008, 2010, 2011 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 if [target_info exists gdb,nosignals] {
  33     verbose "Skipping call-signal-resume.exp because of nosignals."
  34     continue
  35 }
  36
  37
  38 set testfile "call-signals"
  39 set srcfile ${testfile}.c
  40 set binfile ${objdir}/${subdir}/${testfile}
  41
  42 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  43      untested call-signal-resume.exp
  44      return -1
  45 }
  46
  47 # Some targets can't do function calls, so don't even bother with this
  48 # test.
  49 if [target_info exists gdb,cannot_call_functions] {
  50     setup_xfail "*-*-*" 2416
  51     fail "This target can not call functions"
  52     continue
  53 }
  54
  55 proc get_dummy_frame_number { } {
  56     global gdb_prompt
  57
  58     gdb_test_multiple "bt" "backtrace" {
  59         -re "#(\[0-9\]*) *<function called from gdb>.*$gdb_prompt $" {
  60             return $expect_out(1,string)
  61         }
  62     }
  63     return ""
  64 }
  65
  66 # Start with a fresh gdb.
  67
  68 gdb_exit
  69 gdb_start
  70 gdb_reinitialize_dir $srcdir/$subdir
  71 gdb_load ${binfile}
  72
  73 if { ![runto_main] } {
  74     fail "Can't run to main"
  75     return 0
  76 }
  77
  78 gdb_test "break stop_one" "Breakpoint \[0-9\]* at .*"
  79 gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, stop_one.*" \
  80     "continue to breakpoint at stop_one"
  81
  82 # Call function (causing the program to get a signal), and see if gdb handles
  83 # it properly.
  84 gdb_test_multiple "call gen_signal ()" \
  85         "inferior function call signaled" {
  86     -re "\[\r\n\]*no signal\[\r\n\]+$gdb_prompt $" {
  87         unsupported "inferior function call signaled"
  88         return 0
  89     }
  90     -re "\[\r\n\]*The program being debugged was signaled.*\[\r\n\]+$gdb_prompt $" {
  91         pass "inferior function call signaled"
  92     }
  93 }
  94
  95 set frame_number [get_dummy_frame_number]
  96 if { "$frame_number" == "" } {
  97     fail "dummy stack frame number"
  98     setup_xfail "*-*-*"
  99 } else {
 100     pass "dummy stack frame number"
 101 }
 102
 103 # Pop the dummy frame.
 104 gdb_test "frame $frame_number" ".*"
 105 gdb_test_no_output "set confirm off"
 106 gdb_test_no_output "return"
 107
 108 # Resume execution, the program should continue without any signal.
 109
 110 gdb_test "break stop_two" "Breakpoint \[0-9\]* at .*"
 111 gdb_test "continue" "Breakpoint \[0-9\]*, stop_two.*" \
 112     "continue to breakpoint at stop_two"
 113
 114 # Continue again, we should get a signal.
 115
 116 gdb_test "continue" "Program received signal .*" \
 117     "continue to receipt of signal"
 118
 119 # Hand call another function that prematurely stops,
 120 # then manually pop the dummy stack frame.
 121
 122 gdb_test "break null_hand_call" "Breakpoint \[0-9\]* at .*"
 123 gdb_test "call null_hand_call ()" "Breakpoint \[0-9\]*, null_hand_call.*" \
 124     "null_hand_call"
 125
 126 set frame_number [get_dummy_frame_number]
 127 if { "$frame_number" == "" } {
 128     fail "dummy stack frame number"
 129     setup_xfail "*-*-*"
 130     # Need something.
 131     set frame_number 0
 132 } else {
 133     pass "dummy stack frame number"
 134 }
 135
 136 # Pop the dummy frame.
 137 gdb_test "frame $frame_number" ".*"
 138 gdb_test_no_output "set confirm off"
 139 gdb_test_no_output "return"
 140
 141 # Continue again, this time we should get to the signal handler.
 142
 143 gdb_test "break handle_signal" "Breakpoint \[0-9\]* at .*"
 144 gdb_test "continue" "Breakpoint \[0-9\]*, handle_signal.*" \
 145     "continue to breakpoint at handle_signal"
 146
 147 # Continue one last time, the program should exit normally.
 148
 149 gdb_test "continue" "Program exited normally." \
 150     "continue to program exit"
 151
 152 return 0