/**
  * @file
  * Defines the following sections/functions, some are linked at 
  * specific addresses in the final ELF kernel binary.
  * This is specified in the _linker.ld_ file.
  *
  * * 0x007000  .smp - entry point for application processors (16bit code)
  * * 0x100000  .multiboot - the multiboot header
  *
  * * .text
  * * .bootstrap_stack
  * * _start() - main entry point for booting cpu, calls kernel_main().
  * 
  * The addresses for .smp and .multiboot are based on the assumption:
  * * 0x00000500 - 0x00007BFF : guaranteed free to use
  * * 0x00100000 - 0x00EFFFFF : free for use (if it exists) 
  *
  * References
  * ----------
  * * https://www.gnu.org/software/grub/manual/multiboot/multiboot.html#Boot-information-format
  * * http://wiki.osdev.org/Bare_Bones
  */

/** This will be called by a multiboot compilant boot-loader (i.e. grub2).
 *  Calls kernel_main() passing through eax and ebx:
 *  * eax - magic number
 *  * ebx - multiboot structure
 * */
void _start();

/** 16-bit entry point for application processors */
void _start_smp();