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