scripts/gen_ll_addressable_symbols.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0+
   3 # Copyright (C) 2020 Marek Behún <kabel@kernel.org>
   4
   5 # Generate __ADDRESSABLE(symbol) for every linker list entry symbol, so that LTO
   6 # does not optimize these symbols away
   7
   8 # The expected parameter of this script is the command requested to have
   9 # the U-Boot symbols to parse, for example: $(NM) $(u-boot-main)
  10
  11 set -e
  12
  13 echo '#include <common.h>'
  14 $@ 2>/dev/null | grep -oe '_u_boot_list_2_[a-zA-Z0-9_]*_2_[a-zA-Z0-9_]*' | \
  15         sort -u | sed -e 's/^\(.*\)/extern char \1[];\n__ADDRESSABLE(\1);/'