Differential D44271 Diff 137738 tools/build/symlist.awk

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tools/build/symlist.awk

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				#-
				# 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
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				# 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.
				#

				# symlist.awk - process "readelf -sW" output to produce compat symbol list

				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

				# Only print symbols from .dynsym. Unstriped libaries may have
				Lint: Possible Spelling Mistake Inline Actions Possible spelling error. You wrote 'libaries', but did you mean 'libraries'? Lint: Possible Spelling Mistake: Possible spelling error. You wrote 'libaries', but did you mean 'libraries'?
				# internal symbol tables.
				if (symtab != ".dynsym") next

				kibUnsubmitted Done Inline Actions Wouldn't -D switch for readelf do this? kib: Wouldn't -D switch for readelf do this?
				brooksAuthorUnsubmitted Done Inline Actions Unfortunately llvm-readelf doesn't support -D today and I'd like to avoid the need to bootstrap readelf. We should probably add -D support, but I'm at the mercy of llvm15 toolchains downstream so it will be a long time before we can rely on it. brooks: Unfortunately llvm-readelf doesn't support -D today and I'd like to avoid the need to bootstrap…
				kibUnsubmitted Not Done Inline Actions We have 18 in the tree? At least please comment about the reason of using this check (which is also not guaranteed to work if sections are stripped). kib: We have 18 in the tree? At least please comment about the reason of using this check (which is…
				# 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)
				}