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} $" {
  90             setup_kfail powerpc-*-*bsd* gdb/1639
  91             fail "$test (program exited)"
  92         }
  93         -re "(while ..done|return 0).*${gdb_prompt} $" {
  94             # After stepping out of a function /r signal-handler, GDB will
  95             # advance the inferior until it is at the first instruction of
  96             # a code-line.  While typically things return to the middle of
  97             # the "while..." (and hence GDB advances the inferior to the
  98             # "return..." line) it is also possible for the return to land
  99             # on the first instruction of "while...".  Accept both cases.
 100             pass "$test"
 101         }
 102     }
 103 }
 104
 105 proc advancei { i } {
 106     global gdb_prompt
 107     set program_exited 0
 108
 109     # Get us back into the handler
 110     rerun_to_main
 111     gdb_test "continue" ".* handler .*" "continue to handler for $i"
 112
 113     set test "$i into signal trampoline"
 114     gdb_test_multiple "$i" "${test}" {
 115         -re "Cannot insert breakpoint 0.*${gdb_prompt} $" {
 116             # Some platforms use a special read-only page for signal
 117             # trampolines.  We can't set a breakpoint there, and we
 118             # don't gracefully fall back to single-stepping.
 119             setup_kfail "i?86-*-linux*" gdb/1736
 120             fail "$test (could not set breakpoint)"
 121             return
 122         }
 123         -re "done = 1;.*${gdb_prompt} $" {
 124             send_gdb "$i\n"
 125             exp_continue
 126         }
 127         -re "\} .. handler .*${gdb_prompt} $" {
 128             send_gdb "$i\n"
 129             exp_continue
 130         }
 131         -re "signal handler called.*${gdb_prompt} $" {
 132             pass "$test"
 133         }
 134         -re "main .*${gdb_prompt} $" {
 135             fail "$test (in main)"
 136         }
 137         -re "Program exited normally.*${gdb_prompt} $" {
 138             fail "$test (program exited)"
 139             set program_exited 1
 140         }
 141         -re "Make handler return now.*y or n. $" {
 142             send_gdb "y\n"
 143             exp_continue
 144         }
 145     }
 146
 147     set test "$i out of signal trampoline"
 148     gdb_test_multiple "$i" "${test}" {
 149         -re "while .*${gdb_prompt} $" {
 150             pass "$test (in main)"
 151         }
 152         -re "signal handler called.*${gdb_prompt} $" {
 153             send_gdb "$i\n"
 154             exp_continue
 155         }
 156         -re "return .*${gdb_prompt} $" {
 157             fail "$test (stepped)"
 158         }
 159         -re "Make .*frame return now.*y or n. $" {
 160             send_gdb "y\n"
 161             exp_continue
 162         }
 163         -re "Program exited normally.*${gdb_prompt} $" {
 164             kfail gdb/1639 "$test (program exited)"
 165             set program_exited 1
 166         }
 167         -re "The program is not being run.*${gdb_prompt} $" {
 168             if { $program_exited } {
 169                 # Previously kfailed with an exit
 170                 pass "$test (the program is not being run)"
 171             } else {
 172                 fail "$test (the program is not being run)"
 173             }
 174         }
 175     }
 176 }
 177
 178 advance step
 179 advancei stepi
 180
 181 advance next
 182 advancei nexti
 183
 184 advancei finish
 185 advancei return