gdb/testsuite/gdb.base/auxv.exp

   1 # Test `info auxv' and related functionality.
   2
   3 # Copyright 1992,1993,1994,1995,1996,1997,1998,1999,2000,2004,2007,2008,2009
   4 #       Free Software 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 set prms_id 0
  32 set bug_id 0
  33
  34 set testfile "auxv"
  35 set srcfile ${testfile}.c
  36 set binfile ${objdir}/${subdir}/${testfile}
  37 set corefile ${objdir}/${subdir}/${testfile}.corefile
  38 set gcorefile ${objdir}/${subdir}/${testfile}.gcore
  39
  40 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  41     untested "couldn't compile ${srcdir}/${subdir}/${srcfile}"
  42     return -1
  43 }
  44
  45 # Use a fresh directory to confine the native core dumps.
  46 # Make it the working directory for gdb and its child.
  47 set coredir "${objdir}/${subdir}/coredir.[getpid]"
  48 file mkdir $coredir
  49 set core_works [expr [isnative] && ! [is_remote target]]
  50
  51 # Run GDB on the test program up to where it will dump core.
  52
  53 gdb_exit
  54 gdb_start
  55 gdb_reinitialize_dir $srcdir/$subdir
  56 gdb_load ${binfile}
  57 gdb_test "set print sevenbit-strings" "" \
  58         "set print sevenbit-strings; ${testfile}"
  59 gdb_test "set width 0" "" \
  60         "set width 0; ${testfile}"
  61
  62 if {$core_works} {
  63     if {[gdb_test "cd $coredir" ".*Working directory .*" \
  64              "cd to temporary directory for core dumps"]} {
  65         set core_works 0
  66     }
  67 }
  68
  69 if { ![runto_main] } then {
  70     gdb_suppress_tests;
  71 }
  72 set print_core_line [gdb_get_line_number "ABORT;"]
  73 gdb_test "tbreak $print_core_line"
  74 gdb_test continue ".*ABORT;.*"
  75
  76 proc fetch_auxv {test} {
  77     global gdb_prompt
  78
  79     set auxv_lines {}
  80     set bad -1
  81     # Former trailing `\[\r\n\]+' may eat just \r leaving \n in the buffer
  82     # corrupting the next matches.
  83     if {[gdb_test_multiple "info auxv" $test {
  84         -re "info auxv\r\n" {
  85             exp_continue
  86         }
  87         -ex "The program has no auxiliary information now" {
  88             set bad 1
  89             exp_continue
  90         }
  91         -ex "Auxiliary vector is empty" {
  92             set bad 1
  93             exp_continue
  94         }
  95         -ex "No auxiliary vector found" {
  96             set bad 1
  97             exp_continue
  98         }
  99         -re "^\[0-9\]+\[ \t\]+(AT_\[^ \t\]+)\[^\r\n\]+\r\n" {
 100             lappend auxv_lines $expect_out(0,string)
 101             exp_continue
 102         }
 103         -re "^\[0-9\]+\[ \t\]+\\?\\?\\?\[^\r\n\]+\r\n" {
 104             warning "Unrecognized tag value: $expect_out(0,string)"
 105             set bad 1
 106             lappend auxv_lines $expect_out(0,string)
 107             exp_continue
 108         }
 109         -re "$gdb_prompt $" {
 110             incr bad
 111         }
 112         -re "^\[^\r\n\]+\r\n" {
 113             if {!$bad} {
 114                 warning "Unrecognized output: $expect_out(0,string)"
 115                 set bad 1
 116             }
 117             exp_continue
 118         }
 119     }] != 0} {
 120         return {}
 121     }
 122
 123     if {$bad} {
 124         fail $test
 125         return {}
 126     }
 127
 128     pass $test
 129     return $auxv_lines
 130 }
 131
 132 set live_data [fetch_auxv "info auxv on live process"]
 133
 134 # Now try gcore.
 135 set gcore_works 0
 136 set escapedfilename [string_to_regexp $gcorefile]
 137 gdb_test_multiple "gcore $gcorefile" "gcore" {
 138     -re "Saved corefile ${escapedfilename}\[\r\n\]+$gdb_prompt $" {
 139         pass "gcore"
 140         set gcore_works 1
 141     }
 142     -re "Can't create a corefile\[\r\n\]+$gdb_prompt $" {
 143         unsupported "gcore"
 144     }
 145     -re "Undefined command: .*\[\r\n\]+$gdb_prompt $" {
 146         unsupported "gcore"
 147     }
 148 }
 149
 150 # Let the program continue and die.
 151 gdb_test continue ".*Program received signal.*"
 152 gdb_test continue ".*Program terminated with signal.*"
 153
 154 # Now collect the core dump it left.
 155 set test "generate native core dump"
 156 if {$core_works} {
 157     # Find the
 158     set names [glob -nocomplain -directory $coredir *core*]
 159     if {[llength $names] == 1} {
 160         set file [file join $coredir [lindex $names 0]]
 161         remote_exec build "mv $file $corefile"
 162         pass $test
 163     } else {
 164         set core_works 0
 165         warning "can't generate a core file - core tests suppressed - check ulimit -c"
 166         fail $test
 167     }
 168 } else {
 169     unsupported $test
 170 }
 171 remote_exec build "rm -rf $coredir"
 172
 173 # Now we can examine the core files and check that their data matches what
 174 # we saw in the process.  Note that the exact data can vary between runs,
 175 # so it's important that the native core dump file and the gcore-created dump
 176 # both be from the same run of the program as we examined live.
 177
 178 proc do_core_test {works corefile test1 test2} {
 179     if {! $works} {
 180         unsupported $test1
 181         unsupported $test2
 182     } else {
 183         gdb_test "core $corefile" "Core was generated by.*" \
 184             "load core file for $test1" \
 185             "A program is being debugged already.*" "y"
 186         set core_data [fetch_auxv $test1]
 187         global live_data
 188         if {$core_data == $live_data} {
 189             pass $test2
 190         } else {
 191             fail $test2
 192         }
 193     }
 194 }
 195
 196 do_core_test $core_works $corefile \
 197     "info auxv on native core dump" "matching auxv data from live and core"
 198
 199 do_core_test $gcore_works $gcorefile \
 200     "info auxv on gcore-created dump" "matching auxv data from live and gcore"