Dear Sir, I need to port the code of IAR compiler to CC-RL compiler. I have find a file called portasm.s26. I am not sure what this file does. So anyone can suggest some documents or any idea on how to port this file will be helpful? Thankyou.

The file implements and installs two interrupts – one that handles one task yielding to another and one that handles the tick interrupts. Most of the work is done in ISR_Suport.h, which is included at the top of the file.