gdb/testsuite/gdb.base/auxv.exp

   1 # Test `info auxv' and related functionality.
   2
   3 # Copyright
   4 #       1992,1993,1994,1995,1996,1997,1998,1999,2000,2004,2007,2008,2009,2010
   5 #       Free Software Foundation, Inc.
   6
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 # This file is based on corefile.exp which was written by Fred
  21 # Fish. (fnf@cygnus.com)
  22
  23 if { ! [istarget "*-*-linux*"] && ! [istarget "*-*-solaris*"] } {
  24     verbose "Skipping auxv.exp because of lack of support."
  25     return
  26 }
  27
  28 if $tracelevel then {
  29         strace $tracelevel
  30 }
  31
  32 set prms_id 0
  33 set bug_id 0
  34
  35 set testfile "auxv"
  36 set srcfile ${testfile}.c
  37 set binfile ${objdir}/${subdir}/${testfile}
  38 set corefile ${objdir}/${subdir}/${testfile}.corefile
  39 set gcorefile ${objdir}/${subdir}/${testfile}.gcore
  40
  41 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  42     untested "couldn't compile ${srcdir}/${subdir}/${srcfile}"
  43     return -1
  44 }
  45
  46 # Use a fresh directory to confine the native core dumps.
  47 # Make it the working directory for gdb and its child.
  48 set coredir "${objdir}/${subdir}/coredir.[getpid]"
  49 file mkdir $coredir
  50 set core_works [expr [isnative] && ! [is_remote target]]
  51
  52 # Run GDB on the test program up to where it will dump core.
  53
  54 gdb_exit
  55 gdb_start
  56 gdb_reinitialize_dir $srcdir/$subdir
  57 gdb_load ${binfile}
  58 gdb_test "set print sevenbit-strings" "" \
  59         "set print sevenbit-strings; ${testfile}"
  60 gdb_test "set width 0" "" \
  61         "set width 0; ${testfile}"
  62
  63 if {$core_works} {
  64     if {[gdb_test "cd $coredir" ".*Working directory .*" \
  65              "cd to temporary directory for core dumps"]} {
  66         set core_works 0
  67     }
  68 }
  69
  70 if { ![runto_main] } then {
  71     gdb_suppress_tests;
  72 }
  73 set print_core_line [gdb_get_line_number "ABORT;"]
  74 gdb_test "tbreak $print_core_line"
  75 gdb_test continue ".*ABORT;.*"
  76
  77 proc fetch_auxv {test} {
  78     global gdb_prompt
  79
  80     set auxv_lines {}
  81     set bad -1
  82     # Former trailing `\[\r\n\]+' may eat just \r leaving \n in the buffer
  83     # corrupting the next matches.
  84     if {[gdb_test_multiple "info auxv" $test {
  85         -re "info auxv\r\n" {
  86             exp_continue
  87         }
  88         -ex "The program has no auxiliary information now" {
  89             set bad 1
  90             exp_continue
  91         }
  92         -ex "Auxiliary vector is empty" {
  93             set bad 1
  94             exp_continue
  95         }
  96         -ex "No auxiliary vector found" {
  97             set bad 1
  98             exp_continue
  99         }
 100         -re "^\[0-9\]+\[ \t\]+(AT_\[^ \t\]+)\[^\r\n\]+\r\n" {
 101             lappend auxv_lines $expect_out(0,string)
 102             exp_continue
 103         }
 104         -re "^\[0-9\]+\[ \t\]+\\?\\?\\?\[^\r\n\]+\r\n" {
 105             warning "Unrecognized tag value: $expect_out(0,string)"
 106             set bad 1
 107             lappend auxv_lines $expect_out(0,string)
 108             exp_continue
 109         }
 110         -re "$gdb_prompt $" {
 111             incr bad
 112         }
 113         -re "^\[^\r\n\]+\r\n" {
 114             if {!$bad} {
 115                 warning "Unrecognized output: $expect_out(0,string)"
 116                 set bad 1
 117             }
 118             exp_continue
 119         }
 120     }] != 0} {
 121         return {}
 122     }
 123
 124     if {$bad} {
 125         fail $test
 126         return {}
 127     }
 128
 129     pass $test
 130     return $auxv_lines
 131 }
 132
 133 set live_data [fetch_auxv "info auxv on live process"]
 134
 135 # Now try gcore.
 136 set gcore_works 0
 137 set escapedfilename [string_to_regexp $gcorefile]
 138 gdb_test_multiple "gcore $gcorefile" "gcore" {
 139     -re "Saved corefile ${escapedfilename}\[\r\n\]+$gdb_prompt $" {
 140         pass "gcore"
 141         set gcore_works 1
 142     }
 143     -re "Can't create a corefile\[\r\n\]+$gdb_prompt $" {
 144         unsupported "gcore"
 145     }
 146     -re "Undefined command: .*\[\r\n\]+$gdb_prompt $" {
 147         unsupported "gcore"
 148     }
 149 }
 150
 151 # Let the program continue and die.
 152 gdb_test continue ".*Program received signal.*"
 153 gdb_test continue ".*Program terminated with signal.*"
 154
 155 # Now collect the core dump it left.
 156 set test "generate native core dump"
 157 if {$core_works} {
 158     # Find the
 159     set names [glob -nocomplain -directory $coredir *core*]
 160     if {[llength $names] == 1} {
 161         set file [file join $coredir [lindex $names 0]]
 162         remote_exec build "mv $file $corefile"
 163         pass $test
 164     } else {
 165         set core_works 0
 166         warning "can't generate a core file - core tests suppressed - check ulimit -c"
 167         fail $test
 168     }
 169 } else {
 170     unsupported $test
 171 }
 172 remote_exec build "rm -rf $coredir"
 173
 174 # Now we can examine the core files and check that their data matches what
 175 # we saw in the process.  Note that the exact data can vary between runs,
 176 # so it's important that the native core dump file and the gcore-created dump
 177 # both be from the same run of the program as we examined live.
 178
 179 proc do_core_test {works corefile test1 test2} {
 180     if {! $works} {
 181         unsupported $test1
 182         unsupported $test2
 183     } else {
 184         gdb_test "core $corefile" "Core was generated by.*" \
 185             "load core file for $test1" \
 186             "A program is being debugged already.*" "y"
 187         set core_data [fetch_auxv $test1]
 188         global live_data
 189         if {$core_data == $live_data} {
 190             pass $test2
 191         } else {
 192             fail $test2
 193         }
 194     }
 195 }
 196
 197 do_core_test $core_works $corefile \
 198     "info auxv on native core dump" "matching auxv data from live and core"
 199
 200 do_core_test $gcore_works $gcorefile \
 201     "info auxv on gcore-created dump" "matching auxv data from live and gcore"