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

   1 # Copyright 2008, 2010 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   send_gdb "bt\n"
  59   gdb_expect {
  60     -re "#(\[0-9\]*) *<function called from gdb>.*$gdb_prompt $"
  61       {
  62         return $expect_out(1,string)
  63       }
  64     -re "$gdb_prompt $"
  65       {
  66         return ""
  67       }
  68     timeout
  69       {
  70         return ""
  71       }
  72   }
  73   return ""
  74 }
  75
  76 # Start with a fresh gdb.
  77
  78 gdb_exit
  79 gdb_start
  80 gdb_reinitialize_dir $srcdir/$subdir
  81 gdb_load ${binfile}
  82
  83 if { ![runto_main] } {
  84     fail "Can't run to main"
  85     return 0
  86 }
  87
  88 gdb_test "break stop_one" "Breakpoint \[0-9\]* at .*"
  89 gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, stop_one.*" \
  90     "continue to breakpoint at stop_one"
  91
  92 # Call function (causing the program to get a signal), and see if gdb handles
  93 # it properly.
  94 gdb_test_multiple "call gen_signal ()" \
  95         "inferior function call signaled" {
  96     -re "\[\r\n\]*no signal\[\r\n\]+$gdb_prompt $" {
  97         unsupported "inferior function call signaled"
  98         return 0
  99     }
 100     -re "\[\r\n\]*The program being debugged was signaled.*\[\r\n\]+$gdb_prompt $" {
 101         pass "inferior function call signaled"
 102     }
 103 }
 104
 105 set frame_number [get_dummy_frame_number]
 106 if { "$frame_number" == "" } {
 107     fail "dummy stack frame number"
 108     setup_xfail "*-*-*"
 109 } else {
 110     pass "dummy stack frame number"
 111 }
 112
 113 # Pop the dummy frame.
 114 gdb_test "frame $frame_number" ""
 115 gdb_test "set confirm off" ""
 116 gdb_test "return" ""
 117
 118 # Resume execution, the program should continue without any signal.
 119
 120 gdb_test "break stop_two" "Breakpoint \[0-9\]* at .*"
 121 gdb_test "continue" "Breakpoint \[0-9\]*, stop_two.*" \
 122     "continue to breakpoint at stop_two"
 123
 124 # Continue again, we should get a signal.
 125
 126 gdb_test "continue" "Program received signal .*" \
 127     "continue to receipt of signal"
 128
 129 # Hand call another function that prematurely stops,
 130 # then manually pop the dummy stack frame.
 131
 132 gdb_test "break null_hand_call" "Breakpoint \[0-9\]* at .*"
 133 gdb_test "call null_hand_call ()" "Breakpoint \[0-9\]*, null_hand_call.*" \
 134     "null_hand_call"
 135
 136 set frame_number [get_dummy_frame_number]
 137 if { "$frame_number" == "" } {
 138     fail "dummy stack frame number"
 139     setup_xfail "*-*-*"
 140     # Need something.
 141     set frame_number 0
 142 } else {
 143     pass "dummy stack frame number"
 144 }
 145
 146 # Pop the dummy frame.
 147 gdb_test "frame $frame_number" ""
 148 gdb_test "set confirm off" ""
 149 gdb_test "return" ""
 150
 151 # Continue again, this time we should get to the signal handler.
 152
 153 gdb_test "break handle_signal" "Breakpoint \[0-9\]* at .*"
 154 gdb_test "continue" "Breakpoint \[0-9\]*, handle_signal.*" \
 155     "continue to breakpoint at handle_signal"
 156
 157 # Continue one last time, the program should exit normally.
 158
 159 gdb_test "continue" "Program exited normally." \
 160     "continue to program exit"
 161
 162 return 0