| #!/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 |
