53 lines
1.6 KiB
Bash
Executable File
53 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
# bnd_plt_1.sh -- test -z bndplt for x86_64
|
|
|
|
# Copyright (C) 2016-2022 Free Software Foundation, Inc.
|
|
# Written by Cary Coutant <ccoutant@gmail.com>.
|
|
|
|
# This file is part of gold.
|
|
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
# MA 02110-1301, USA.
|
|
|
|
match()
|
|
{
|
|
if ! egrep "$1" "$2" >/dev/null 2>&1; then
|
|
echo 1>&2 "could not find '$1' in $2"
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
# Extract just the PLT portion of the disassembly.
|
|
get_plt()
|
|
{
|
|
sed -n -e '/^Disassembly of section .plt:/,/^Disassembly/p'
|
|
}
|
|
|
|
# Extract the addresses of the indirect jumps, omitting the PLT0 entry.
|
|
get_aplt_jmp_addresses()
|
|
{
|
|
sed -n -e '/_GLOBAL_OFFSET_TABLE_+0x10/d' \
|
|
-e '/bnd jmp \*0x[0-9a-f]*(%rip)/p' |
|
|
sed -e 's/ *\([0-9a-f]*\):.*/\1/'
|
|
}
|
|
|
|
match 'bnd jmp \*0x[0-9a-f]*\(%rip\) *# [0-9a-f]* <_GLOBAL_OFFSET_TABLE_\+0x10>' bnd_plt_1.stdout
|
|
|
|
for APLT_ADDR in $(get_plt < bnd_ifunc_2.stdout | get_aplt_jmp_addresses)
|
|
do
|
|
match "bnd (call|jmp) $APLT_ADDR" bnd_ifunc_2.stdout
|
|
done
|