#ifndef __MEMLAYOUT_H
#define __MEMLAYOUT_H

/*
 * The following diagram was originally made by Holly and Jeff

       +----------+
       |          |
       |  free    |
       |          |
       +----------+
       |          |
   4MB +----------+ at 4MB, growing upward, is the program data/text
       |    |     |         growing downward, is the program stack.
       |    V     |
 3.5MB +----------+ at 3.5MB, growing downward, is the program's in-kernel stack
       |    |     |
       |    V     |
       +----------+ at 3MB, growing downward, is the program interrupt stack
       |    |     |
       |    V     |
       +----------| ~2.5MB
       |          |
       |  free    |
       |          |
       +----------+
       |          |
   1MB +----------+ at 1MB, growing upward, is the shell data/text
       |    |     |         growing downward, is the shell stack.
       |    V     |
 512KB +----------+
       |          |
       |  free    |
       |          |
   8KB +----------+
       |XXXXXXXXXX| The first 8KB are reserved.
     0 +----------+
*/

#define STACK_SIZE 0x80000
#define PROGRAM_STACK_START 0x400000
#define PROGRAM_TEXT_START 0x400000
#define KERNEL_STACK_START 0x380000
#define PROGINT_STACK_START 0x300000
#define SHELL_STACK_START 0x100000
#define SHELL_TEXT_START 0x100000

//how much room to have between the stack start and the actual start of data
#define STACK_SPACING 160

//the size of a filesystem block
#define BLOCKSIZE 0x1000

#endif //__MEMLAYOUT_H