#!/usr/bin/env bash
arch='arm-gem5'
while getopts 'a:' OPT; do
  case "$OPT" in
    a)
      arch="$OPTARG"
      ;;
  esac
done
shift "$(($OPTIND - 1))"
outdir="$(pwd)/buildroot/output.${arch}~"
echo $arch
if echo "$arch" | grep -Eq '^x86_64(-|$)'; then
  cmd="\
M5_PATH=\"$(pwd)/gem5-system\" \
./gem5/build/X86/gem5.opt \
gem5/configs/example/fs.py \
--disk-image=\"${outdir}/images/rootfs.ext2\" \
--kernel=\"${outdir}/build/linux-custom/vmlinux\" \
--root-device='/dev/sda' \
"
elif echo "$arch" | grep -Eq '^arm(-|$)'; then
  cmd="\
M5_PATH=\"$(pwd)/gem5-system\" \
./gem5/build/ARM/gem5.opt \
gem5/configs/example/fs.py \
--disk-image=\"${outdir}/images/rootfs.ext2\" \
--dtb-file=\"$(pwd)/gem5/system/arm/dt/armv7_gem5_v1_1cpu.dtb\" \
--kernel=\"${outdir}/build/linux-custom/vmlinux\" \
--machine-type='VExpress_GEM5_V1' \
--root-device='/dev/sda' \
"
fi
cmd="$cmd \"\$@\""
echo "$cmd"
eval "$cmd"