54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
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/*
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* Copyright 2007, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _KERNEL_COMMPAGE_H
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#define _KERNEL_COMMPAGE_H
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/*! Some systemwide commpage constants, used in the kernel and libroot */
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#ifndef _ASSEMBLER
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# include <SupportDefs.h>
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#endif
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/* be careful what you put here, this file is included from assembly */
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#define COMMPAGE_ENTRY_MAGIC 0
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#define COMMPAGE_ENTRY_VERSION 1
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#define COMMPAGE_ENTRY_REAL_TIME_DATA 2
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#define COMMPAGE_ENTRY_FIRST_ARCH_SPECIFIC 3
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#define COMMPAGE_SIZE (0x8000)
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#define COMMPAGE_TABLE_ENTRIES 64
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#define COMMPAGE_SIGNATURE 'COMM'
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#define COMMPAGE_VERSION 1
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#define USER_COMMPAGE_ADDR ARCH_USER_COMMPAGE_ADDR
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// set by the architecture specific implementation
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#ifndef _ASSEMBLER
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#define USER_COMMPAGE_TABLE ((void**)(USER_COMMPAGE_ADDR))
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#ifdef __cplusplus
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extern "C" {
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#endif
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status_t commpage_init(void);
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void* allocate_commpage_entry(int entry, size_t size);
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void* fill_commpage_entry(int entry, const void* copyFrom, size_t size);
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status_t arch_commpage_init(void);
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// implemented in the architecture specific part
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // ! _ASSEMBLER
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#include <arch_commpage.h>
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#endif /* _KERNEL_COMMPAGE_H */
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