#!/bin/sh
progname="$(basename "$(readlink -f "$0")")"
die() {
	ec="$1"
	shift
	echo "$@"
	exit "$ec"
}

GDB="arm-none-eabi-gdb"

[ $# -lt 1 ] && die 1 "usage: $progname DEVICE [gdb args...]"
DEVICE="$1"
shift

if [ $# -eq 0 ] ; then
	# automatically add --se flag if executable can be found
	exec="$(find . -maxdepth 3 -name '*.elf' | head -n1)"
	[ -n "$exec" ] && set -- --se="$exec"
fi

[ -n "$(echo "$*" | grep -i zephyr)" ] && GDB="arm-zephyr-eabi-gdb"

fork JLinkGDBServerCLExe \
	-device "$DEVICE" \
	-select USB \
	-endian little \
	-if SWD \
	-speed auto \
	-singlerun \
	-noir \
	-nologtofile \
	-silent

# append startup attach command to args
set -- --eval-command="target extended-remote :2331" "$@"

# launch gdb and forward any other args to it
exec "$GDB" "$@"