/*
  Simple Executable Code Format

  SECF is a executable format for any platform (though designed with x86(-32) in mind.)
  that makes use of registers, syscalls/interrupts, and other tables/structures instead of libraries.

  register map:
  (unused means the program can use the register without any issue, no data used/passed by the SECF will be there)

  EAX: unused
  EBX: unused
  ECX: arg string length
  EDX: variable area size (bytes)
  ESI: pointer to arg string
  EDI: unused
  ESP: unused, normal function
  EBP: pointer to variable area



  The variable area is a area of a specific size (size in EDX) that can be used for storing variables/temporary data.
  Any additional memory space needed can be aquired via malloc.
  The minimum size of the variable area is 16 bytes and a maximum size of 64KiB.
  
  
  Use syscall/int (number TBT) to call functions
*/

#include <types.h>
#include <stdlib.h>

void* init_var_area(size_t size)
{
  if (size == (size_t) 0)
  {
    return NULL; /* size 0 is invalid. */
  }
  else if (size >= 65536)
  {
   return NULL; /* size above 65,536 is invalid. */
  }
  else if (size < 16)
  {
    size = 16;
  }
  
  return malloc(size); /* No need to check for null because we'd return null in that case */
}