linux-kernel-module-cheat/trace-boot

#!/usr/bin/env bash
set -eu
. common
set -- ${cli_trace_boot:-} "$@"
while getopts a: OPT; do
  case "$OPT" in
    a)
      arch="$OPTARG"
      ;;
  esac
done
set_common_vars "$arch" false
time ./run -a "$arch" -e 'init=/poweroff.out' -T exec_tb
time ./qemu-trace2txt -a "$arch"

# Instruction count.
# We could put this on a separate script, but it just adds more arch boilerplate to a new script.
# So let's just leave it here for now since it did not add a significant processing time.
echo "instructions $(wc -l "${qemu_trace_txt_file}" | cut -d' ' -f1)"
entry_addr=$("${root_dir}/runtc" readelf -h "${build_dir}/linux-custom/vmlinux" | grep 'Entry point address' | sed -E 's/.*: *//')
echo "entry_address ${entry_addr}"
sed "/${entry_addr}/q" "${qemu_trace_txt_file}" >"${qemu_out_dir}/trace-boot.txt"
echo "instructions_firmware $(wc -l "${qemu_out_dir}/trace-boot.txt" | cut -d' ' -f1)"