gcc/testsuite/lib/gcc-gdb-test.exp

   1 #   Copyright (C) 2009-2013 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 GCC; see the file COPYING3.  If not see
  15 # <http://www.gnu.org/licenses/>.
  16
  17 # Utility for testing variable values using gdb, invoked via dg-final.
  18 # Call pass if variable has the desired value, otherwise fail.
  19 #
  20 # Argument 0 is the line number on which to put a breakpoint
  21 # Argument 1 is the name of the variable to be checked
  22 # Argument 2 is the expected value of the variable
  23 # Argument 3 handles expected failures and the like
  24 proc gdb-test { args } {
  25     if { ![isnative] || [is_remote target] } { return }
  26
  27     if { [llength $args] >= 4 } {
  28         switch [dg-process-target [lindex $args 3]] {
  29             "S" { }
  30             "N" { return }
  31             "F" { setup_xfail "*-*-*" }
  32             "P" { }
  33         }
  34     }
  35
  36     # This assumes that we are three frames down from dg-test, and that
  37     # it still stores the filename of the testcase in a local variable "name".
  38     # A cleaner solution would require a new DejaGnu release.
  39     upvar 2 name testcase
  40     upvar 2 prog prog
  41
  42     set gdb_name $::env(GUALITY_GDB_NAME)
  43     set testname "$testcase line [lindex $args 0] [lindex $args 1] == [lindex $args 2]"
  44     set output_file "[file rootname [file tail $prog]].exe"
  45     set cmd_file "[file rootname [file tail $prog]].gdb"
  46
  47     set fd [open $cmd_file "w"]
  48     puts $fd "break [lindex $args 0]"
  49     puts $fd "run"
  50     puts $fd "print [lindex $args 1]"
  51     puts $fd "print [lindex $args 2]"
  52     puts $fd "quit"
  53     close $fd
  54
  55     send_log "Spawning: $gdb_name -nx -nw -quiet -x $cmd_file ./$output_file\n"
  56     set res [remote_spawn target "$gdb_name -nx -nw -quiet -x $cmd_file ./$output_file"]
  57     if { $res < 0 || $res == "" } {
  58         unsupported "$testname"
  59         file delete $cmd_file
  60         return
  61     }
  62
  63     remote_expect target [timeout_value] {
  64         # Too old GDB
  65         -re "Unhandled dwarf expression|Error in sourced command file" {
  66             unsupported "$testname"
  67             remote_close target
  68             file delete $cmd_file
  69             return
  70         }
  71         -re {[\n\r]\$1 = ([^\n\r]*)[\n\r]+\$2 = ([^\n\r]*)[\n\r]} {
  72             set first $expect_out(1,string)
  73             set second $expect_out(2,string)
  74             if { $first == $second } {
  75                 pass "$testname"
  76             } else {
  77                 # We need the -- to disambiguate $first from an option,
  78                 # as it may be negative.
  79                 send_log -- "$first != $second\n"
  80                 fail "$testname"
  81             }
  82             remote_close target
  83             file delete $cmd_file
  84             return
  85         }
  86         timeout {
  87             unsupported "$testname"
  88             remote_close target
  89             file delete $cmd_file
  90             return
  91         }
  92     }
  93
  94     unsupported "$testname"
  95     remote_close target
  96     file delete $cmd_file
  97     return
  98 }