Changeset View
Changeset View
Standalone View
Standalone View
share/mk/symref.awk
- This file was added.
| #- | |||||
| # SPDX-License-Identifier: BSD-2-Clause | |||||
| # | |||||
| # Copyright (c) 2024 SRI International | |||||
| # | |||||
| # This software was developed by SRI International, the University of | |||||
| # Cambridge Computer Laboratory (Department of Computer Science and | |||||
| # Technology), and Capabilities Limited under Defense Advanced Research | |||||
| # Projects Agency (DARPA) Contract No. FA8750-24-C-B047 ("DEC"). | |||||
| # | |||||
| # Redistribution and use in source and binary forms, with or without | |||||
| # modification, are permitted provided that the following conditions | |||||
| # are met: | |||||
| # 1. Redistributions of source code must retain the above copyright | |||||
| # notice, this list of conditions and the following disclaimer. | |||||
| # 2. Redistributions in binary form must reproduce the above copyright | |||||
| # notice, this list of conditions and the following disclaimer in the | |||||
| # documentation and/or other materials provided with the distribution. | |||||
| # | |||||
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
| # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
| # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
| # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
| # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
| # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
| # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
| # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
| # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
| # SUCH DAMAGE. | |||||
| # | |||||
| # symref.awk - process "readelf -sW" output to compat symbol reference | |||||
| BEGIN { | |||||
| symtab = "" | |||||
| } | |||||
| /^Symbol table / { | |||||
| symtab = $3 | |||||
| gsub(/'/, "", symtab) | |||||
| } | |||||
| /^ *[0-9]+:/ { | |||||
| # We don't (currently) care what symbols the library depends on | |||||
| if ($7 == "UND") next | |||||
| # Don't track symbols in the private namespace. Instead, depend | |||||
| # on linking with --no-undefined-version to detect dropped symbols. | |||||
| if ($8 ~ /@FBSDprivate_/) next | |||||
| # Only print symbols from .dynsym. Unstriped libraries may have | |||||
| # internal symbol tables and we can't rely on readelf supporting | |||||
| # -D (llvm-readelf doesn't). | |||||
| if (symtab != ".dynsym") next | |||||
| # readelf -sW header: | |||||
| # Num: Value Size Type Bind Vis Ndx Name | |||||
| # 1 2 3 4 5 6 7 8 | |||||
| print $8 " " tolower($4) " " tolower($5) " " tolower($6) | |||||
| } | |||||