An x86 kernel, written in assembly and C.
You need a gcc cross-compiler and binutils, targeting i686-elf. You'll also need nasm for assembling the assembly files not generated by gcc.
On the first line of the makefile is the variable PREFIX; set that to the location of your cross-compiling toolchain. Then, make a folder called bin in the root directory of the project, and then do make all. This will build bin/fennix.bin, a disk image containing the bootloader and kernel.
- Writing a kernel is a new endeavour for me, so my primary reference is Erik Helin and Adam Renberg's The little book about OS development.
- The OSDev wiki has been immensely helpful; I've also osmosed some helpful tidbits by lurking in #osdev on libera.chat.
- The Intel 64 and IA-32 Architectures Software Developer’s Manual has offered sufficiently approachable and (naturally) very detailed synopses and explanations of how to program an x86 processor.