103 lines
2.9 KiB
Bash
Executable File
103 lines
2.9 KiB
Bash
Executable File
#!/bin/sh
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# Copyright (C) 2002, 2003, 2009, 2010 Free Software Foundation, Inc.
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#
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# This file is part of the GNU ISO C++ Library. This library is free
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# software; you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 3, or (at your option)
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# any later version.
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#
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# This library 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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#
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# You should have received a copy of the GNU General Public License along
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# with this library; see the file COPYING3. If not see
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# <http://www.gnu.org/licenses/>.
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if test ${#} -lt 2 || test $1 = '--help'; then
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echo "Usage: extract_symvers shared_lib output_file" 1>&2
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exit 1
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fi
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lib=$1
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output=$2
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# This avoids weird sorting problems later.
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LC_ALL=C
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export LC_ALL
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LANG=C
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export LANG
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tmp=extract.$$
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case `uname -s` in
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SunOS)
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# Sun ld doesn't record symbol versions in .dynsym entries and they
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# cannot easily be extracted from readelf --versions output, so use pvs
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# instead. Linux may have a completely different pvs from LVM2, so only
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# do this on SunOS.
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# Need to use nawk on Solaris 2 since Solaris 8/9 awk (oawk) cannot handle
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# sub.
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pvs -dsvo ${lib} | \
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nawk '# Remove colon separator from version field, trailing semicolon.
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{
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sub (/:$/, "", $3);
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sub (/;$/, "");
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}
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# Record base version. The [BASE] field was only added in Solaris 11,
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# so simply use the first record instead.
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NR == 1 {
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basever = $3;
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next;
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}
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# Ignore version dependencies.
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$4 ~ /\{.*\}/ {
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next;
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}
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NF == 4 {
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if ($3 == $4 || $3 == basever)
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# Emit versions or symbols bound to base versions as objects.
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printf "OBJECT:0:%s\n", $4;
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else
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# Everything else without a size field is a function.
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printf "FUNC:%s@@%s\n", $4, $3;
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next;
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}
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# Emit objects.
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NF == 5 {
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# Strip parens from object size.
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sub (/^\(/, "", $5);
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sub (/\)$/, "", $5);
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printf "OBJECT:%s:%s@@%s\n", $5, $4, $3;
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next;
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}' | sort | uniq > $tmp 2>&1
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;;
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*)
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# GNU binutils, somewhere after version 2.11.2, requires -W/--wide to
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# avoid default line truncation. -W is not supported and truncation did
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# not occur by default before that point.
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readelf="readelf --symbols"
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if readelf --help | grep -- --wide > /dev/null; then
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readelf="$readelf --wide"
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fi
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${readelf} ${lib} |\
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sed -e 's/ \[<other>: [A-Fa-f0-9]*\] //' -e '/\.dynsym/,/^$/p;d' |\
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egrep -v ' (LOCAL|UND) ' |\
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awk '{ if ($4 == "FUNC" || $4 == "NOTYPE")
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printf "%s:%s\n", $4, $8;
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else if ($4 == "OBJECT" || $4 == "TLS")
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printf "%s:%s:%s\n", $4, $3, $8;
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}' | sort | uniq > $tmp 2>&1
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# else printf "Huh? What is %s?\n", $8;
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;;
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esac
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# I think we'll be doing some more with this file, but for now, dump.
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mv $tmp $output
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exit 0
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