First commit, Vystem v0.1

docs/kerneltools/vmemcheck.md

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+# Virtual memory checker
+
+## Introduction
+
+This file is responsible for checking that there is no overlapp between virtual pages range defined in `shelter/lib/include/memory/vmem_layout.h`. For the full documentation about this file, please see [virtual memory layout documentation](../shelter/memory/vmemlayout.md).
+
+## Usage
+
+The script is located inside `shelter/tools/checker/vmem_layout_checker.py`.
+
+It can be used like that:
+``` bash
+python shelter/tools/checker/vmem_layout_checker.py <path to header file>
+```
+
+## Detailled processus
+
+1) Open provided file, parse it and print the list of valid regions.
+2) Generate `cfile.c` to let the compiler do the hard work of parsing macro declaration
+3) Compile (the `gcc` compiler must be accessible inside the path) and run the generated C program
+4) Recover the output of the program, parse it to obtain start and size of each virtual region
+5) Check for overlaps and return an error if something went bad during the processus
+
+The compiled program and the C file are deleted afterward.