Move assembly into the arch directory

README.md

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+Experimenting with operating system development.
+
+- Programming language: [Elna](https://git.caraus.tech/belka/elna).
+- Architecture: RISC-V 32-bit.
+- Target machine: Qemu.
+
+This repository contains some rake (ruby's task runner) tasks to build
+a cross compiler and the code. Assuming that all dependencies needed to build
+GCC are installed in the system the build is tested on Linux an MacOS.
+
+To build the cross compiler do:
+
+```sh
+rake cross
+```
+
+To build and run the rest in qemu:
+
+```sh
+rake
+```