a38a92c955
Doesn't do anything ATM, but already provides the required system interface (VFS, caches, POSIX functions). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20859 a95241bf-73f2-0310-859d-f6bbb57e9c96
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*
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* Copyright 2002-2005, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef _FSSH_KERNEL_H
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#define _FSSH_KERNEL_H
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#include "fssh_os.h"
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/* Passed in buffers from user-space shouldn't point into the kernel */
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#if 0
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#define IS_USER_ADDRESS(x) \
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((addr_t)(x) < KERNEL_BASE || (addr_t)(x) > KERNEL_TOP)
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#define IS_KERNEL_ADDRESS(x) \
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((addr_t)(x) >= KERNEL_BASE && (addr_t)(x) <= KERNEL_TOP)
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#endif // 0
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#define DEBUG_KERNEL_STACKS
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// Note, debugging kernel stacks doesn't really work yet. Since the
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// interrupt will also try to use the stack on a page fault, all
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// you get is a double fault.
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// At least, you then know that the stack overflows in this case :)
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/** Size of the kernel stack */
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#ifndef DEBUG_KERNEL_STACKS
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# define KERNEL_STACK_SIZE (B_PAGE_SIZE * 2) // 8 kB
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#else
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# define KERNEL_STACK_SIZE (B_PAGE_SIZE * 3) // 8 kB + one guard page
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#endif
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#define KERNEL_STACK_GUARD_PAGES 1
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/** Size of the stack given to teams in user space */
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#define USER_MAIN_THREAD_STACK_SIZE (16 * 1024 * 1024) // 16 MB
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#define USER_STACK_SIZE (256 * 1024) // 256 kB
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#define USER_STACK_GUARD_PAGES 4 // 16 kB
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/** Size of the environmental variables space for a process */
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#define ENV_SIZE (B_PAGE_SIZE * 8)
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#define ROUNDUP(a, b) (((a) + ((b)-1)) & ~((b)-1))
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#define ROUNDOWN(a, b) (((a) / (b)) * (b))
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#define CHECK_BIT(a, b) ((a) & (1 << (b)))
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#define SET_BIT(a, b) ((a) | (1 << (b)))
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#define CLEAR_BIT(a, b) ((a) & (~(1 << (b))))
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#endif /* _FSSH_KERNEL_H */
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