davex-mg-utils/utils/auto_origin.sh
2017-09-15 09:55:29 -07:00

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#!/bin/bash
END_FENCE=45056
if [ -z "${1}" ]; then
cat <<USAGE_END
Usage: $0 <command> <args>
<command>+<args> should be an ld65 command line with exactly one object
file containing
Appends --start-addr <address> to <command> if the first object file in
<command> has X_DX_AUTO_LOAD exported. Such a command should probably
only have one object file, one CODE segment, and no other initialized
segments.
<address> is calculated to be a page boundary that causes the linked
object file in question to end somewhere between $AF00 and $AFFF.
od65 should be in the same location as <command>
USAGE_END
exit 1
fi
shopt -s extglob
COMMW=`which ${1}`
if [ "${?}" -gt 0 ]; then
echo "Cannot locate ${1}"
exit 2
fi
OD65="`dirname ${COMMW}`/od65"
if [ ! -x "${OD65}" ]; then
echo "Cannot use ${OD65}"
exit 3
fi
CMD_SUFFIX=
OBJECT_FILE=
for ARG in ${*}; do
# echo "${ARG}"
if [[ "${ARG}" == @(\-*) ]]; then
:
# echo "Skipping ${ARG}"
else
if [ -r "${ARG}" ]; then
${OD65} --dump-exports ${ARG} | grep -q X_DX_AUTO_LOAD
RESULT="${?}"
if [ "${RESULT}" -eq 0 ]; then
OBJECT_FILE="${ARG}"
else
:
# echo "No X_DX_AUTO_LOAD found in ${ARG}: ${RESULT}"
fi
fi
fi
done
if [ -z "${OBJECT_FILE}" ]; then
echo "X_DX_AUTO_LOAD not detected, not auto-originating"
else
echo "Auto-originating ${OBJECT_FILE}"
CODE_SIZE=`${OD65} -S ${OBJECT_FILE} | awk '/CODE:/{print $2}'`
if [ -z "${CODE_SIZE}" -o "${CODE_SIZE}" -lt 1 ]; then
echo "Could not determine code size, got '${CODE_SIZE}'!"
exit 4
fi
echo "Code size: ${CODE_SIZE}"
START=$(( (${END_FENCE} - ${CODE_SIZE}) / 256 * 256 ))
if [ -z "${START}" ]; then
echo "Could not calculate a start address!"
exit 4
else
CMD_SUFFIX="${CMD_SUFFIX} --start-addr ${START}"
fi
fi
CMD="${*}${CMD_SUFFIX}"
echo "${CMD}"
${CMD}