1/* 2 * Copyright 2002-2005, Axel D��rfler, 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 ROUNDDOWN(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 */ 57