linux-kernel-module-cheat/rungdb-user

#!/usr/bin/env bash
set -eu
. common
set -- ${cli_rungdb_user:-} "$@"
usage="$0 <exec-relative-path> [<brk-symbol>]"
gem5_opt=
while getopts a:gh OPT; do
  case "$OPT" in
    a)
      arch="$OPTARG"
      ;;
    g)
      gem5=true
      gem5_opt=-g
      ;;
    h)
      echo "$usage"
      exit 0
      ;;
    ?)
      exit 2
      ;;
  esac
done
shift "$(($OPTIND - 1))"
executable_rel="$1"
shift
if [ "$#" -gt 0 ]; then
  brk="'$1'"
  shift
else
  brk=
fi
set_common_vars "$arch" "$gem5"
executable="${build_dir}/${executable_rel}"
addr="$("${root_dir}/runtc" readelf -h "$executable" | awk '/Entry/{ print $NF }' )"
ex="-ex \"add-symbol-file $executable $addr\""
# -L or else lx-symbols throws for arm:
# gdb.MemoryError: Cannot access memory at address 0xbf0040cc
# TODO understand better.
#
# Also, lx-symbols overrides the add-symbol-file commands.
cmd="./rungdb -a '${arch}' -b '${ex}' ${gem5_opt} -L ${brk}"
echo "$cmd"
eval "$cmd"