rtems

This is the top level directory of the C RTEMS environment.  The
following is a description of the contents of each file and
subdirectory directly in this directory:

    tests

       This directory contains the RTEMS Test Suites. Currently
       this includes the following suites:

         + Single Processor Test Suite
         + Multiprocessor Test Suite
         + Timing Test Suite
         + Sample Application Suite

    lib

       This directory contains src for RTEMS libraries:
          libc, board support (including drivers) and libcpu.

    exec

       This directory contains the source code for the RTEMS executive.