#!/bin/bash
FILE="/usr/src/ccrdev/keep/boot/kernel1"
poself=`LANG=C grep -b -a -o -P '\x7f\x45\x4c\x46\x02\x01\x01' $FILE | cut -d ":" -f 1`
poshvfs=`LANG=C grep -b -a -o -P '\x48\x76\x46\x73' $FILE | cut -d ":" -f 1`

echo "Starting kernel"
dd bs=1 skip=$poself count=$(($poshvfs-$poself)) < $FILE >vmlinux

echo "Putting kernel in HVFS"
cd /usr/src/ccrdev/src
cp /usr/src/ccrdev/src/linux-4.10.1/vmlinux /usr/src/ccrdev/src/hvfs-dir/vmlinux
bzip2 /usr/src/ccrdev/src/hvfs-dir/vmlinux
mv /usr/src/ccrdev/src/hvfs-dir/vmlinux.bz2 /usr/src/ccrdev/src/hvfs-dir/vmlinux

echo "Putting initramfs in HVFS"
cd /usr/src/ccrdev/src/initramfs
find . | cpio -o -H newc | gzip > ../hvfs-dir/initramfs.cpio.gz
cd /usr/src/ccrdev/src/

echo "Closing HVFS"
../tools/hvfsmaker.py hvfs-dir/

echo "Adding hvfs to kernel"
cat hvfs.fs >>vmlinux
hvfssize=$(du -b hvfs.fs)

echo "Fixing ELF headers in our kernel"
../tools/elf_shmove.py $FILE "vmlinux"
../tools/elf_shput.py "vmlinux" "fs" $hvfssize