headers/private/fs_shell/fssh_kernel_priv.h

   1 /*
   2  * Copyright 2002-2005, Axel Dörfler, axeld@pinc-software.de.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
   6  * Distributed under the terms of the NewOS License.
   7  */
   8 #ifndef _FSSH_KERNEL_H
   9 #define _FSSH_KERNEL_H
  10
  11
  12 #include "fssh_os.h"
  13
  14
  15 /* Passed in buffers from user-space shouldn't point into the kernel */
  16 #if 0
  17 #define IS_USER_ADDRESS(x) \
  18         ((addr_t)(x) < KERNEL_BASE || (addr_t)(x) > KERNEL_TOP)
  19
  20 #define IS_KERNEL_ADDRESS(x) \
  21         ((addr_t)(x) >= KERNEL_BASE && (addr_t)(x) <= KERNEL_TOP)
  22 #endif  // 0
  23
  24 #define DEBUG_KERNEL_STACKS
  25         // Note, debugging kernel stacks doesn't really work yet. Since the
  26         // interrupt will also try to use the stack on a page fault, all
  27         // you get is a double fault.
  28         // At least, you then know that the stack overflows in this case :)
  29
  30 /** Size of the kernel stack */
  31 #ifndef DEBUG_KERNEL_STACKS
  32 #       define KERNEL_STACK_SIZE                (B_PAGE_SIZE * 2)       // 8 kB
  33 #else
  34 #       define KERNEL_STACK_SIZE                (B_PAGE_SIZE * 3)       // 8 kB + one guard page
  35 #endif
  36 #define KERNEL_STACK_GUARD_PAGES        1
  37
  38 /** Size of the stack given to teams in user space */
  39 #define USER_MAIN_THREAD_STACK_SIZE     (16 * 1024 * 1024)      // 16 MB
  40 #define USER_STACK_SIZE                         (256 * 1024)            // 256 kB
  41 #define USER_STACK_GUARD_PAGES          4                                       // 16 kB
  42
  43 /** Size of the environmental variables space for a process */
  44 #define ENV_SIZE        (B_PAGE_SIZE * 8)
  45
  46
  47 #define ROUNDUP(a, b) (((a) + ((b)-1)) & ~((b)-1))
  48 #define ROUNDOWN(a, b) (((a) / (b)) * (b))
  49
  50
  51 #define CHECK_BIT(a, b) ((a) & (1 << (b)))
  52 #define SET_BIT(a, b) ((a) | (1 << (b)))
  53 #define CLEAR_BIT(a, b) ((a) & (~(1 << (b))))
  54
  55
  56 #endif  /* _FSSH_KERNEL_H */