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#!/usr/bin/sh
ASM_PATH="src/"
TARGET_PATH="target/"
TMP_PATH="$TARGET_PATH/temp/"
OBJ_PATH="$TMP_PATH"
LINK_SCRIPT_PATH="src/"
GRUB_CFG_PATH="src/grub.cfg"
remove_target() {
rm -rf $TARGET_PATH &> /dev/null
}
create_target() {
mkdir $TARGET_PATH &> /dev/null
mkdir $TMP_PATH &> /dev/null
}
cleanup_temp() {
rm -f $TMP_PATH/* &> /dev/null
}
# ---------------------------------------------------
build_kernel_elf() {
create_target
for f in $ASM_PATH/*.asm; do
nasm -felf64 "$f" -o $OBJ_PATH/"$(basename -s .asm $f)".o
done
ld -n -o $TARGET_PATH/kernel.bin -T $LINK_SCRIPT_PATH/linker.ld $OBJ_PATH/*.o
cleanup_temp
}
build_kernel_iso() {
if test ! -e $TARGET_PATH/kernel.bin; then
build_kernel_elf
fi
create_target
mkdir $TMP_PATH/isofiles &> /dev/null
mkdir $TMP_PATH/isofiles/boot &> /dev/null
mkdir $TMP_PATH/isofiles/boot/grub &> /dev/null
cp $TARGET_PATH/kernel.bin $TMP_PATH/isofiles/boot &> /dev/null
cp $GRUB_CFG_PATH $TMP_PATH/isofiles/boot/grub/grub.cfg &> /dev/null
grub-mkrescue -d /usr/lib/grub/i386-pc -o $TARGET_PATH/uff.iso $TMP_PATH/isofiles
cleanup_temp
}
build_init() {
create_target
}
build_launch() {
qemu-system-x86_64 -cdrom $TARGET_PATH/uff.iso
}
build_run() {
if test ! -e $TARGET_PATH/uff.iso; then
build_kernel_iso
fi
build_launch
}
build_clean() {
remove_target
}
build_all() {
build_kernel_elf
}
not_exec=true
for arg in "$@"; do
case "$arg" in
"kernel-elf") build_kernel_elf;;
"kernel-iso") build_kernel_iso;;
"init") build_init;;
"launch") build_launch;;
"run") build_run;;
"clean") build_clean;;
"all") build_all;;
*)
echo "warn: ignoring unknown option '$arg'"
continue;;
esac
not_exec=false
break
done
print_help() {
echo "usage: $0 option"
echo "options: "
echo " init initialise directory"
echo " clean cleanup binaries"
echo " launch launch iso in qemu"
echo " run creates iso if necessary and runs it in qemu"
echo
echo " kernel-elf build the kernel-elf"
echo " kernel-iso build the kernel-elf if necessary and the kernel-iso"
echo " all build kernel"
}
if $not_exec; then
echo "error: please specify an argument"
echo
print_help
exit -1
fi
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