#!/bin/bash

KERNELVER=$1
KERNELVER_BASE=${KERNELVER%%-*}

version_lt () {
    newest=$((echo "$KERNELVER_BASE"; echo "$1") | sort -V | tail -n1)
    [ "$KERNELVER_BASE" != "$newest" ]
}

version_ge () {
    newest=$((echo "$KERNELVER_BASE"; echo "$1") | sort -V | tail -n1)
    [ "$KERNELVER_BASE" = "$newest" ]
}

version_gt () {
    oldest=$((echo "$KERNELVER_BASE"; echo "$1") | sort -V | head -n1)
    [ "$KERNELVER_BASE" != "$oldest" ]
}

version_le () {
    oldest=$((echo "$KERNELVER_BASE"; echo "$1") | sort -V | head -n1)
    [ "$KERNELVER_BASE" = "$oldest" ]
}

source amd/amdkcl/symbols
source amd/amdkcl/files

echo '// auto generated by DKMS pre-build.sh' > amd/amdkcl/symbols.c
for sym in $SYMS; do
    addr=$(grep "\<$sym\>" /boot/System.map-$KERNELVER | awk -F' ' '{print $1}')
    echo "void *_kcl_$sym = (void *)0x$addr;" >> amd/amdkcl/symbols.c
done

sed -i '/DEFINE_WD_CLASS(reservation_ww_class)/,/EXPORT_SYMBOL(reservation_seqcount_string)/d' amd/amdkcl/reservation.c
sed -i '1i #include <kcl/kcl_reservation_backport.h>' include/linux/reservation.h
sed -i '1i #include <kcl/kcl_fence_backport.h>' include/linux/reservation.h
sed -i 's/linux\/dma-fence.h/kcl\/kcl_fence.h/' include/linux/reservation.h include/drm/gpu_scheduler.h
sed -i 's/reservation_seqcount_string\[\]/*reservation_seqcount_string/' include/linux/reservation.h

while read line; do
	from_header=$(echo $line | cut -d ' ' -f 1)
	to_header=$(echo $line | cut -d ' ' -f 2)
	for file in `grep -rl ${from_header} amd/* scheduler/* ttm/* include/drm/* include/linux/* include/uapi/*`; do
		sed -i "s|${from_header}|${to_header}|" $file
	done
done < amd/amdkcl/headers

for file in $FILES; do
	grep EXPORT_SYMBOL $file \
		| sort -u \
		| awk -F'[()]' '{print "#define "$2" amd"$2" //"$0}'\
		>> include/rename_symbol.h
done

export KERNELVER
./configure