gdb/testsuite/gdb.base/auxv.exp

   1 # Test `info auxv' and related functionality.
   2
   3 # Copyright (C) 1992-2000, 2004, 2007-2010, 2012 Free Software
   4 # Foundation, Inc.
   5
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 # This file is based on corefile.exp which was written by Fred
  20 # Fish. (fnf@cygnus.com)
  21
  22 if { ! [istarget "*-*-linux*"] && ! [istarget "*-*-solaris*"] } {
  23     verbose "Skipping auxv.exp because of lack of support."
  24     return
  25 }
  26
  27 if $tracelevel then {
  28         strace $tracelevel
  29 }
  30
  31
  32 set testfile "auxv"
  33 set srcfile ${testfile}.c
  34 set binfile ${objdir}/${subdir}/${testfile}
  35 set corefile ${objdir}/${subdir}/${testfile}.corefile
  36 set gcorefile ${objdir}/${subdir}/${testfile}.gcore
  37
  38 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  39     untested "couldn't compile ${srcdir}/${subdir}/${srcfile}"
  40     return -1
  41 }
  42
  43 # Use a fresh directory to confine the native core dumps.
  44 # Make it the working directory for gdb and its child.
  45 set coredir "${objdir}/${subdir}/coredir.[getpid]"
  46 file mkdir $coredir
  47 set core_works [expr [isnative] && ! [is_remote target]]
  48
  49 # Run GDB on the test program up to where it will dump core.
  50
  51 gdb_exit
  52 gdb_start
  53 gdb_reinitialize_dir $srcdir/$subdir
  54 gdb_load ${binfile}
  55 gdb_test_no_output "set print sevenbit-strings"
  56 gdb_test_no_output "set width 0"
  57
  58 if {$core_works} {
  59     if {[gdb_test "cd $coredir" ".*Working directory .*" \
  60              "cd to temporary directory for core dumps"]} {
  61         set core_works 0
  62     }
  63 }
  64
  65 if { ![runto_main] } then {
  66     gdb_suppress_tests;
  67 }
  68 set print_core_line [gdb_get_line_number "ABORT;"]
  69 gdb_test "tbreak $print_core_line"
  70 gdb_test continue ".*ABORT;.*"
  71
  72 proc fetch_auxv {test} {
  73     global gdb_prompt
  74
  75     set auxv_lines {}
  76     set bad -1
  77     # Former trailing `\[\r\n\]+' may eat just \r leaving \n in the buffer
  78     # corrupting the next matches.
  79     if {[gdb_test_multiple "info auxv" $test {
  80         -re "info auxv\r\n" {
  81             exp_continue
  82         }
  83         -ex "The program has no auxiliary information now" {
  84             set bad 1
  85             exp_continue
  86         }
  87         -ex "Auxiliary vector is empty" {
  88             set bad 1
  89             exp_continue
  90         }
  91         -ex "No auxiliary vector found" {
  92             set bad 1
  93             exp_continue
  94         }
  95         -re "^\[0-9\]+\[ \t\]+(AT_\[^ \t\]+)\[^\r\n\]+\r\n" {
  96             lappend auxv_lines $expect_out(0,string)
  97             exp_continue
  98         }
  99         -re "^\[0-9\]+\[ \t\]+\\?\\?\\?\[^\r\n\]+\r\n" {
 100             warning "Unrecognized tag value: $expect_out(0,string)"
 101             set bad 1
 102             lappend auxv_lines $expect_out(0,string)
 103             exp_continue
 104         }
 105         -re "$gdb_prompt $" {
 106             incr bad
 107         }
 108         -re "^\[^\r\n\]+\r\n" {
 109             if {!$bad} {
 110                 warning "Unrecognized output: $expect_out(0,string)"
 111                 set bad 1
 112             }
 113             exp_continue
 114         }
 115     }] != 0} {
 116         return {}
 117     }
 118
 119     if {$bad} {
 120         fail $test
 121         return {}
 122     }
 123
 124     pass $test
 125     return $auxv_lines
 126 }
 127
 128 set live_data [fetch_auxv "info auxv on live process"]
 129
 130 # Now try gcore.
 131 set gcore_works 0
 132 set escapedfilename [string_to_regexp $gcorefile]
 133 gdb_test_multiple "gcore $gcorefile" "gcore" {
 134     -re "Saved corefile ${escapedfilename}\[\r\n\]+$gdb_prompt $" {
 135         pass "gcore"
 136         set gcore_works 1
 137     }
 138     -re "Can't create a corefile\[\r\n\]+$gdb_prompt $" {
 139         unsupported "gcore"
 140     }
 141     -re "Undefined command: .*\[\r\n\]+$gdb_prompt $" {
 142         unsupported "gcore"
 143     }
 144 }
 145
 146 # Let the program continue and die.
 147 gdb_test continue ".*Program received signal.*"
 148 gdb_test continue ".*Program terminated with signal.*"
 149
 150 # Now collect the core dump it left.
 151 set test "generate native core dump"
 152 if {$core_works} {
 153     # Find the
 154     set names [glob -nocomplain -directory $coredir *core*]
 155     if {[llength $names] == 1} {
 156         set file [file join $coredir [lindex $names 0]]
 157         remote_exec build "mv $file $corefile"
 158         pass $test
 159     } else {
 160         set core_works 0
 161         warning "can't generate a core file - core tests suppressed - check ulimit -c"
 162         fail $test
 163     }
 164 } else {
 165     unsupported $test
 166 }
 167 remote_exec build "rm -rf $coredir"
 168
 169 # Now we can examine the core files and check that their data matches what
 170 # we saw in the process.  Note that the exact data can vary between runs,
 171 # so it's important that the native core dump file and the gcore-created dump
 172 # both be from the same run of the program as we examined live.
 173
 174 proc do_core_test {works corefile test1 test2} {
 175     if {! $works} {
 176         unsupported $test1
 177         unsupported $test2
 178     } else {
 179         gdb_test "core $corefile" "Core was generated by.*" \
 180             "load core file for $test1" \
 181             "A program is being debugged already.*" "y"
 182         set core_data [fetch_auxv $test1]
 183         global live_data
 184         if {$core_data == $live_data} {
 185             pass $test2
 186         } else {
 187             fail $test2
 188         }
 189     }
 190 }
 191
 192 do_core_test $core_works $corefile \
 193     "info auxv on native core dump" "matching auxv data from live and core"
 194
 195 do_core_test $gcore_works $gcorefile \
 196     "info auxv on gcore-created dump" "matching auxv data from live and gcore"