gold/testsuite/bnd_plt_1.sh

   1 #!/bin/sh
   2
   3 # bnd_plt_1.sh -- test -z bndplt for x86_64
   4
   5 # Copyright (C) 2016-2017 Free Software Foundation, Inc.
   6 # Written by Cary Coutant <ccoutant@gmail.com>.
   7
   8 # This file is part of gold.
   9
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; either version 3 of the License, or
  13 # (at your option) any later version.
  14
  15 # This program is distributed in the hope that it will be useful,
  16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 # GNU General Public License for more details.
  19
  20 # You should have received a copy of the GNU General Public License
  21 # along with this program; if not, write to the Free Software
  22 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  23 # MA 02110-1301, USA.
  24
  25 match()
  26 {
  27   if ! egrep "$1" "$2" >/dev/null 2>&1; then
  28     echo 1>&2 "could not find '$1' in $2"
  29     exit 1
  30   fi
  31 }
  32
  33 # Extract just the PLT portion of the disassembly.
  34 get_plt()
  35 {
  36   sed -n -e '/^Disassembly of section .plt:/,/^Disassembly/p'
  37 }
  38
  39 # Extract the addresses of the indirect jumps, omitting the PLT0 entry.
  40 get_aplt_jmpq_addresses()
  41 {
  42   sed -n -e '/_GLOBAL_OFFSET_TABLE_+0x10/d' \
  43          -e '/bnd jmpq \*0x[0-9a-f]*(%rip)/p' |
  44     sed -e 's/ *\([0-9a-f]*\):.*/\1/'
  45 }
  46
  47 match 'bnd jmpq \*0x[0-9a-f]*\(%rip\) *# [0-9a-f]* <_GLOBAL_OFFSET_TABLE_\+0x10>' bnd_plt_1.stdout
  48
  49 for APLT_ADDR in $(get_plt < bnd_ifunc_2.stdout | get_aplt_jmpq_addresses)
  50 do
  51   match "bnd (callq|jmpq) $APLT_ADDR" bnd_ifunc_2.stdout
  52 done