gdb/testsuite/gdb.base/auxv.exp

   1 # Test `info auxv' and related functionality.
   2
   3 # Copyright (C) 1992-2016 Free Software Foundation, Inc.
   4
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 # This file is based on corefile.exp which was written by Fred
  19 # Fish. (fnf@cygnus.com)
  20
  21 if { ! [istarget "*-*-linux*"] && ! [istarget "*-*-solaris*"] } {
  22     verbose "Skipping auxv.exp because of lack of support."
  23     return
  24 }
  25
  26
  27 standard_testfile .c
  28
  29 set corefile ${binfile}.corefile
  30 set gcorefile ${binfile}.gcore
  31
  32 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable \
  33                   {debug additional_flags=-DUSE_RLIMIT}] != ""
  34      && [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable \
  35                   {debug}] != "" } {
  36     untested "failed to compile"
  37     return -1
  38 }
  39
  40 # Use a fresh directory to confine the native core dumps.
  41 # Make it the working directory for gdb and its child.
  42 set coredir [standard_output_file coredir.[getpid]]
  43 file mkdir $coredir
  44 set core_works [expr [isnative] && ! [is_remote target]]
  45
  46 # Run GDB on the test program up to where it will dump core.
  47
  48 clean_restart ${binfile}
  49 gdb_test_no_output "set print sevenbit-strings"
  50 gdb_test_no_output "set width 0"
  51
  52 if {$core_works} {
  53     if {[gdb_test "cd $coredir" ".*Working directory .*" \
  54              "cd to temporary directory for core dumps"]} {
  55         set core_works 0
  56     }
  57 }
  58
  59 if { ![runto_main] } then {
  60     gdb_suppress_tests
  61 }
  62 set print_core_line [gdb_get_line_number "ABORT;"]
  63 gdb_test "tbreak $print_core_line"
  64 gdb_test continue ".*ABORT;.*"
  65
  66 proc fetch_auxv {test} {
  67     global gdb_prompt
  68
  69     set auxv_lines {}
  70     set bad -1
  71     # Former trailing `\[\r\n\]+' may eat just \r leaving \n in the buffer
  72     # corrupting the next matches.
  73     if {[gdb_test_multiple "info auxv" $test {
  74         -re "info auxv\r\n" {
  75             exp_continue
  76         }
  77         -ex "The program has no auxiliary information now" {
  78             set bad 1
  79             exp_continue
  80         }
  81         -ex "Auxiliary vector is empty" {
  82             set bad 1
  83             exp_continue
  84         }
  85         -ex "No auxiliary vector found" {
  86             set bad 1
  87             exp_continue
  88         }
  89         -re "^\[0-9\]+\[ \t\]+(AT_\[^ \t\]+)\[^\r\n\]+\r\n" {
  90             lappend auxv_lines $expect_out(0,string)
  91             exp_continue
  92         }
  93         -re "^\[0-9\]+\[ \t\]+\\?\\?\\?\[^\r\n\]+\r\n" {
  94             warning "Unrecognized tag value: $expect_out(0,string)"
  95             set bad 1
  96             lappend auxv_lines $expect_out(0,string)
  97             exp_continue
  98         }
  99         -re "$gdb_prompt $" {
 100             incr bad
 101         }
 102         -re "^\[^\r\n\]+\r\n" {
 103             if {!$bad} {
 104                 warning "Unrecognized output: $expect_out(0,string)"
 105                 set bad 1
 106             }
 107             exp_continue
 108         }
 109     }] != 0} {
 110         return {}
 111     }
 112
 113     if {$bad} {
 114         fail $test
 115         return {}
 116     }
 117
 118     pass $test
 119     return $auxv_lines
 120 }
 121
 122 set live_data [fetch_auxv "info auxv on live process"]
 123
 124 # Now try gcore.
 125 set gcore_works [gdb_gcore_cmd "$gcorefile" "gcore"]
 126
 127 # Let the program continue and die.
 128 gdb_test continue ".*Program received signal.*"
 129 gdb_test continue ".*Program terminated with signal.*"
 130
 131 # Now collect the core dump it left.
 132 set test "generate native core dump"
 133 if {$core_works} {
 134     # Find the
 135     set names [glob -nocomplain -directory $coredir *core*]
 136     if {[llength $names] == 1} {
 137         set file [file join $coredir [lindex $names 0]]
 138         remote_exec build "mv $file $corefile"
 139         pass $test
 140     } else {
 141         set core_works 0
 142         warning "can't generate a core file - core tests suppressed - check ulimit -c"
 143         unsupported $test
 144     }
 145 } else {
 146     unsupported $test
 147 }
 148 remote_exec build "rm -rf $coredir"
 149
 150 # Now we can examine the core files and check that their data matches what
 151 # we saw in the process.  Note that the exact data can vary between runs,
 152 # so it's important that the native core dump file and the gcore-created dump
 153 # both be from the same run of the program as we examined live.
 154
 155 proc do_core_test {works corefile test1 test2} {
 156     if {! $works} {
 157         unsupported $test1
 158         unsupported $test2
 159     } else {
 160         gdb_test "core $corefile" "Core was generated by.*" \
 161             "load core file for $test1" \
 162             "A program is being debugged already.*" "y"
 163         set core_data [fetch_auxv $test1]
 164         global live_data
 165         if {$core_data == $live_data} {
 166             pass $test2
 167         } else {
 168             fail $test2
 169         }
 170     }
 171 }
 172
 173 do_core_test $core_works $corefile \
 174     "info auxv on native core dump" "matching auxv data from live and core"
 175
 176 do_core_test $gcore_works $gcorefile \
 177     "info auxv on gcore-created dump" "matching auxv data from live and gcore"