Calling C function from Assembly

To understand how to call minimal C function not including any libraries, from assembly. Write a Makefile to compile and run.

Details:

C function in kmain.c is called from loader.s assembly code. Learnt how to pass arguments to calle functions and to receive back the return value in calling function.

Usage:

To build project

   $ make

or

	$ make all

To run project

	$ make run

This will fire up the Bochs emulator, press C to continue. OS now boots up. sum of arguments is returned from C function that is called from assembly. And it is stored in EAX register. Then Kernel goes to infinte loop, press q in shell which quits Bochs. Grep bochslog.txt to see value written to EAX register.