#!/usr/bin/env bash

# Copyright 2020 The Android KVM Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

source "$(dirname "${BASH_SOURCE[0]}")/../common.inc"

default_var GDB		"${TOOLCHAINS_GDB_BIN}"
default_var KERNEL_ELF	"${LINUX_OUT_ELF}"
default_var BL1_ELF	"${OUT_DIR}/trusted-firmware-a/qemu/release/bl1/bl1.elf"
default_var BL2_ELF	"${OUT_DIR}/trusted-firmware-a/qemu/release/bl2/bl2.elf"
default_var BL31_ELF	"${OUT_DIR}/trusted-firmware-a/qemu/release/bl31/bl31.elf"
default_var VERBOSE	0

function usage() {
	cat <<EOF

Usage: $0 [-h] [-v] [-e GDB] [-k KERNEL_ELF]

    -h    output this help text
    -v    print invoked command
    -e    GDB binary
    -k    kernel ELF file (vmlinux for Linux)
EOF
}

while getopts ":e:k:vh" OPT; do
	case "${OPT}" in
	e)	GDB="${OPTARG}"			;;
	k)	KERNEL_ELF="${OPTARG}"		;;
	v)	VERBOSE=1			;;
	h)
		usage
		exit 0
		;;
	\?)
		echo "Invalid option: -${OPTARG}" 1>&2
		usage 1>&2
		exit 1
		;;
	:)
		echo "Invalid option: -${OPTARG} requires an argument" 1>&2
		usage 1>&2
		exit 1
		;;
    esac
done
shift $((OPTIND -1))
if [ $# -ne 0 ]; then
	echo "Unrecognized options: $@" 1>&2
	usage 1>&2
	exit 1
fi

INPUT="$(dirname "${BASH_SOURCE[0]}")/aarch64.gdb"
OUTPUT=$(mktemp)

[ "${VERBOSE}" -eq 1 ] && set -x
sed -e "s|##ELF_PATH##|${KERNEL_ELF}|g" \
	-e "s|##BL1_ELF_PATH##|${BL1_ELF}|g" \
	-e "s|##BL2_ELF_PATH##|${BL2_ELF}|g" \
	-e "s|##BL31_ELF_PATH##|${BL31_ELF}|g" \
	"${INPUT}" > "${OUTPUT}"
exec "${GDB}" -ex "source ${OUTPUT}"