gen_ll_addressable_symbols.sh 545 B

123456789101112131415
  1. #!/bin/bash
  2. # SPDX-License-Identifier: GPL-2.0+
  3. # Copyright (C) 2020 Marek Behún <marek.behun@nic.cz>
  4. # Generate __ADDRESSABLE(symbol) for every linker list entry symbol, so that LTO
  5. # does not optimize these symbols away
  6. # The expected parameter of this script is the command requested to have
  7. # the U-Boot symbols to parse, for example: $(NM) $(u-boot-main)
  8. set -e
  9. echo '#include <common.h>'
  10. $@ 2>/dev/null | grep -oe '_u_boot_list_2_[a-zA-Z0-9_]*_2_[a-zA-Z0-9_]*' | \
  11. sort -u | sed -e 's/^\(.*\)/extern char \1[];\n__ADDRESSABLE(\1);/'