gnu/dist/gdb6/gdb/testsuite/gdb.base/siginfo.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 siginfo.c creates a backtrace containing a signal
  19 # handler registered using sigaction's sa_sigaction / SA_SIGINFO.
  20 # Some OS's (e.g., GNU/Linux) use different signal trampolines for
  21 # sa_sigaction and sa_handler.
  22
  23 # This test first confirms that GDB can backtrace through the
  24 # alternative sa_sigaction signal handler, and second that GDB can
  25 # nexti/stepi out of such a handler.
  26
  27 if [target_info exists gdb,nosignals] {
  28     verbose "Skipping signals.exp because of nosignals."
  29     continue
  30 }
  31
  32 if $tracelevel then {
  33     strace $tracelevel
  34 }
  35
  36 set prms_id 0
  37 set bug_id 0
  38
  39 set testfile siginfo
  40 set srcfile ${testfile}.c
  41 set binfile ${objdir}/${subdir}/${testfile}
  42 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  43     untested "Couldn't compile ${module}.c"
  44     return -1
  45 }
  46
  47 # get things started
  48 gdb_exit
  49 gdb_start
  50 gdb_reinitialize_dir $srcdir/$subdir
  51 gdb_load ${binfile}
  52
  53 gdb_test "display/i \$pc"
  54
  55 # Advance to main
  56 if { ![runto_main] } then {
  57     gdb_suppress_tests;
  58 }
  59
  60 # Pass all the alarms straight through (but verbosely)
  61 # gdb_test "handle SIGALRM print pass nostop"
  62 # gdb_test "handle SIGVTALRM print pass nostop"
  63 # gdb_test "handle SIGPROF print pass nostop"
  64
  65 # Run to the signal handler, validate the backtrace.
  66 gdb_test "break handler"
  67 gdb_test "continue" ".* handler .*" "continue to stepi handler"
  68 send_gdb "bt\n"
  69 gdb_expect_list "backtrace for nexti" ".*$gdb_prompt $" {
  70     "\[\r\n\]+.0 \[^\r\n\]* handler "
  71     "\[\r\n\]+.1  .signal handler called."
  72     "\[\r\n\]+.2 \[^\r\n\]* main .*"
  73 }
  74
  75 # Check that GDB can step the inferior back to main
  76 set test "step out of handler"
  77 gdb_test_multiple "step" "${test}" {
  78     -re "Could not insert single-step breakpoint.*$gdb_prompt $" {
  79         setup_kfail sparc*-*-openbsd* gdb/1736
  80         fail "$test (could not insert single-step breakpoint)"
  81     }
  82     -re "done = 1;.*${gdb_prompt} $" {
  83         send_gdb "$i\n"
  84         exp_continue
  85     }
  86     -re "\} .. handler .*${gdb_prompt} $" {
  87         send_gdb "step\n"
  88         exp_continue
  89     }
  90     -re "Program exited normally.*${gdb_prompt} $" {
  91         kfail gdb/1613 "$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 }