gdb/testsuite/gdb.base/sigstep.exp

   1 # Copyright 2004 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 2 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, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  16
  17
  18 # The program sigstep.c creates a very simple backtrace containing one
  19 # signal handler and signal trampoline.
  20
  21 # This test runs the program up to the signal handler, and then
  22 # attempts to step/next the inferior back to main.
  23
  24 if [target_info exists gdb,nosignals] {
  25     verbose "Skipping sigstep.exp because of nosignals."
  26     continue
  27 }
  28
  29 if $tracelevel then {
  30     strace $tracelevel
  31 }
  32
  33 set prms_id 0
  34 set bug_id 0
  35
  36 set testfile sigstep
  37 set srcfile ${testfile}.c
  38 set binfile ${objdir}/${subdir}/${testfile}
  39 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  40     untested "Couldn't compile ${module}.c"
  41     return -1
  42 }
  43
  44 # get things started
  45 gdb_exit
  46 gdb_start
  47 gdb_reinitialize_dir $srcdir/$subdir
  48 gdb_load ${binfile}
  49
  50 gdb_test "display/i \$pc"
  51
  52 # Advance to main
  53 if { ![runto_main] } then {
  54     gdb_suppress_tests;
  55 }
  56
  57 # Pass all the alarms straight through (but verbosely)
  58 # gdb_test "handle SIGALRM print pass nostop"
  59 # gdb_test "handle SIGVTALRM print pass nostop"
  60 # gdb_test "handle SIGPROF print pass nostop"
  61
  62 # Run to the signal handler, validate the backtrace.
  63 gdb_test "break handler"
  64 gdb_test "continue" ".* handler .*" "continue to stepi handler"
  65 send_gdb "bt\n"
  66 gdb_expect_list "backtrace for nexti" ".*$gdb_prompt $" {
  67     "\[\r\n\]+.0 \[^\r\n\]* handler "
  68     "\[\r\n\]+.1  .signal handler called."
  69     "\[\r\n\]+.2 \[^\r\n\]* main .*"
  70 }
  71
  72 proc advance { i } {
  73     global gdb_prompt
  74
  75     # Get us back into the handler
  76     rerun_to_main
  77     gdb_test "continue" ".* handler .*" "continue to handler for $i"
  78
  79     set test "$i out of handler"
  80     gdb_test_multiple "$i" "${test}" {
  81         -re "done = 1;.*${gdb_prompt} $" {
  82             send_gdb "$i\n"
  83             exp_continue
  84         }
  85         -re "\} .. handler .*${gdb_prompt} $" {
  86             send_gdb "$i\n"
  87             exp_continue
  88         }
  89         -re "Program exited normally.*${gdb_prompt} $" {
  90             kfail gdb/1613 "$test (program exited)"
  91         }
  92         -re "(while ..done|return 0).*${gdb_prompt} $" {
  93             # After stepping out of a function /r signal-handler, GDB will
  94             # advance the inferior until it is at the first instruction of
  95             # a code-line.  While typically things return to the middle of
  96             # the "while..." (and hence GDB advances the inferior to the
  97             # "return..." line) it is also possible for the return to land
  98             # on the first instruction of "while...".  Accept both cases.
  99             pass "$test"
 100         }
 101     }
 102 }
 103
 104 proc advancei { i } {
 105     global gdb_prompt
 106     set program_exited 0
 107
 108     # Get us back into the handler
 109     rerun_to_main
 110     gdb_test "continue" ".* handler .*" "continue to handler for $i"
 111
 112     set test "$i into signal trampoline"
 113     gdb_test_multiple "$i" "${test}" {
 114         -re "done = 1;.*${gdb_prompt} $" {
 115             send_gdb "$i\n"
 116             exp_continue
 117         }
 118         -re "\} .. handler .*${gdb_prompt} $" {
 119             send_gdb "$i\n"
 120             exp_continue
 121         }
 122         -re "signal handler called.*${gdb_prompt} $" {
 123             pass "$test"
 124         }
 125         -re "Program exited normally.*${gdb_prompt} $" {
 126             kfail gdb/1613 "$test (program exited)"
 127             set program_exited 1
 128         }
 129         -re "main .*${gdb_prompt} $" {
 130             fail "$test (in main)"
 131         }
 132         -re "Make handler return now.*y or n. $" {
 133             send_gdb "y\n"
 134             exp_continue
 135         }
 136     }
 137
 138     set test "$i out of signal trampoline"
 139     gdb_test_multiple "$i" "${test}" {
 140         -re "while .*${gdb_prompt} $" {
 141             pass "$test (in main)"
 142         }
 143         -re "signal handler called.*${gdb_prompt} $" {
 144             send_gdb "$i\n"
 145             exp_continue
 146         }
 147         -re "return .*${gdb_prompt} $" {
 148             fail "$test (stepped)"
 149         }
 150         -re "Make .*frame return now.*y or n. $" {
 151             send_gdb "y\n"
 152             exp_continue
 153         }
 154         -re "The program is not being run.*${gdb_prompt} $" {
 155             if { $program_exited } {
 156                 # Previously kfailed with an exit
 157                 pass "$test (The program is not being run)"
 158             } else {
 159                 fail "$test"
 160             }
 161         }
 162     }
 163 }
 164
 165 advance step
 166 advancei stepi
 167
 168 advance next
 169 advancei nexti
 170
 171 advancei finish
 172 advancei return