graphene/Runtime/pal_loader

#!/usr/bin/env bash

while :
do
	case "$1" in
		"SGX")
			SGX=1
			export SGX
			;;
		"GDB")
			GDB=1
			;;
		*)
			break
			;;
	esac
	shift
done

RUNTIME_DIR=$(/usr/bin/dirname "$(readlink -f "${BASH_SOURCE[0]}")")
if [ -z "$PAL_HOST" ]; then
    if [ ! -f /usr/bin/make ]; then
        libpal="$RUNTIME_DIR/libpal-*.so"
        libpal="$(echo -n "$libpal")"
        libpal="${libpal//$RUNTIME_DIR\//}"
        if [ "$libpal" = 'libpal-*.so' ]; then
            echo "Unable to detect PAL_HOST. Please install the make program."
            exit 1
        fi

        array=("$libpal")
        if [ ${#array[@]} -ne 1 ]; then
            echo "Multiple libpal detected ($libpal). Please explicitly set the environment variable PAL_HOST."
            exit 1
        fi

        PAL_HOST="${libpal%.so}"
        PAL_HOST="${PAL_HOST#libpal-}"
    else
        PAL_HOST=$(/usr/bin/make --no-print-directory --quiet -f "$RUNTIME_DIR/../Scripts/Makefile.configs" print_host 2>&1)
    fi
fi

MANIFEST=
PREFIX=()
PAL_CMD=$RUNTIME_DIR/pal-$PAL_HOST

if [ "$GDB" == "1" ]; then
	GDB=$RUNTIME_DIR/pal_gdb-$PAL_HOST
	if [ ! -f "$GDB" ]; then
		GDB="/usr/bin/gdb"
	fi
fi

if [ "$GDB" != "" ] && [ "$GDB" != "0" ]; then
	PREFIX=("$GDB")
	if [ -n "$INSIDE_EMACS" ]; then
		PREFIX+=("-i=mi")
	fi
	PREFIX+=("--args")
fi

if [ "$PERF" == "1" ]; then
	PREFIX=(perf stat)
fi

if [ "$MEMUSG" == "1" ]; then
	PREFIX=("$RUNTIME_DIR/../Scripts/memusg")
fi

while [ "$1" != "" ];
do
	if [ "$MANIFEST" == "" ]; then
		MANIFEST=$1
		shift
		continue
	fi

	break
done

if [ ! -f "$PAL_CMD" ]; then
	echo "$PAL_CMD is not built, or security mode is not supported"
	exit 1
fi

if [ ${#PREFIX[@]} -eq 0 ]; then
    exec "$PAL_CMD" "$MANIFEST" "$@"
else
    exec "${PREFIX[@]}" "$PAL_CMD" "$MANIFEST" "$@"
fi