This contatins the bootlader assembly file alt.s and other relevant files for booting from a x86 platform. The kernel is assumed to be present at the 513th byte from the start containing the standard ELF file. The bootloader loads the kernel at a set address hardcoded currently in alt.s file.
Use the following to get the raw machine code from a gcc compiled file x86_64-elf-objcopy -O binary --only-section=.text prog.o foobar.text