gdb/testsuite/gdb.base/gcore-relro-pie.exp

   1 # Copyright 2013-2017 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 this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # PR 11786 (Gold and strip differ on flags,align fields of PT_GNU_RELRO).
  17 # Generate a core file from the stripped version of the program,
  18 # and then try to debug the core with the unstripped version.
  19
  20 standard_testfile
  21
  22 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug additional_flags=-fpie "ldflags=-pie -Wl,-z,relro"}]} {
  23     return -1
  24 }
  25
  26 set stripped_binfile ${binfile}.stripped
  27 set gcorefile ${binfile}.gcore
  28
  29 set strip_program [transform strip]
  30 remote_file host delete ${stripped_binfile}
  31 if [run_on_host "strip" "$strip_program" "-g -o ${stripped_binfile} $binfile"] {
  32     return -1
  33 }
  34
  35 # Workaround PR binutils/10802:
  36 # Preserve the 'x' bit also for PIEs (Position Independent Executables).
  37 set perm [file attributes ${binfile} -permissions]
  38 file attributes ${stripped_binfile} -permissions $perm
  39
  40 clean_restart ${stripped_binfile}
  41
  42 # The binary is stripped of debug info, but not minsyms.
  43 if ![runto break_here] {
  44     fail "can't run to break_here"
  45     return -1
  46 }
  47
  48 if {![gdb_gcore_cmd $gcorefile "save a corefile"]} {
  49     return -1
  50 }
  51
  52 # Now restart gdb with the unstripped binary and load the corefile.
  53
  54 clean_restart ${binfile}
  55
  56 gdb_test "core ${gcorefile}" \
  57     "Core was generated by .*" "re-load generated corefile"
  58
  59 # Put $pc in gdb.log for debug purposes for comparison with stripped case.
  60 gdb_test "x/i \$pc" "break_here.*"
  61
  62 gdb_test "frame" "#0 \[^\r\n\]* break_here .*" "unstripped + core ok"