ARM CMSIS module for Arduino IDE
Source is the one provided by ARM at https://github.com/ARM-software/CMSIS/
Main CMSIS URL is http://www.arm.com/products/processors/cortex-m/cortex-microcontroller-software-interface-standard.php
API Help can be found at http://www.keil.com/pack/doc/cmsis/general/html/index.html