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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# Certain function names are disallowed due to section name ambiguities
# introduced by -ffunction-sections.
#
# See the comment above TEXT_MAIN in include/asm-generic/vmlinux.lds.h.
objfile="$1"
if [ ! -f "$objfile" ]; then
echo "usage: $0 <file.o>" >&2
exit 1
fi
bad_symbols=$(nm "$objfile" | awk '$2 ~ /^[TtWw]$/ {print $3}' | grep -E '^(startup|exit|split|unlikely|hot|unknown)(\.|$)')
if [ -n "$bad_symbols" ]; then
echo "$bad_symbols" | while read -r sym; do
echo "$objfile: error: $sym() function name creates ambiguity with -ffunction-sections" >&2
done
exit 1
fi
exit 0
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