My Hobby x86-64 OS kernel.

# Building and Debugging Guide
## Environment
Any Linux distribution / Bash for Windows + GCC cross compiler.

## Required packages
To compile the kernel, the following modules are required on linux system, please install these:

nasm, xorriso, grub-common, grub-pc-bin

## Cross-compiler
### Method 1 - Compile one yourself.
Just follow the instructions here: https://wiki.osdev.org/GCC_Cross-Compiler
Remember to set the "TARGET" to x86_64-elf instead of i686-elf and build libgcc without redzone https://wiki.osdev.org/Libgcc_without_red_zone.

### Method 2 - Precompiled binaries
Here is my precompiled cross compiler. Feel free to use it.
VERSION: GCC 7.3 + Binutils 2.30
HOST: x86_64-pc-linux-gnu
CONFIGURED WITH: --target=x86_64-elf --disable-nls --enable-languages=c,c++ --without-headers

1. Download "cross.tar.gz" from https://drive.google.com/file/d/1ssQblBLk7I3ZqFPoeViVlsBvDMXcJFa1/view?usp=sharing

2. Run "tar -xvf cross.tar.gz -C $HOME/opt/cross"

## Compilation
Run "make all" in the root directory
The makefile generates secxkrnl.iso (kernel image), secxkrnl.elf(kernel executable), secxkrnl.dmp(kernel disassembly) at the end.

To clean all generated files, run "make clean"

## Running
On windows run "qemu.bat"
On linux run "./qemu.bat"