57 lines
1.0 KiB
C++
57 lines
1.0 KiB
C++
/*
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* \brief Access to kernel info page (KIP)
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* \author Julian Stecklina
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* \date 2008-02-20
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*/
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/*
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* Copyright (C) 2008-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _INCLUDE__PISTACHIO__KIP_H_
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#define _INCLUDE__PISTACHIO__KIP_H_
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namespace Pistachio {
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#include <l4/types.h>
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#include <l4/kip.h>
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/**
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* Return a pointer to the kernel info page
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*/
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L4_KernelInterfacePage_t *get_kip();
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unsigned int get_page_size_log2();
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L4_Word_t get_page_mask();
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inline L4_Word_t get_page_size()
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{
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return 1<<get_page_size_log2();
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}
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inline L4_ThreadId_t get_sigma0()
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{
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/* from l4/sigma0.h */
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return L4_GlobalId (get_kip()->ThreadInfo.X.UserBase, 1);
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}
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inline unsigned int get_user_base()
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{
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return get_kip()->ThreadInfo.X.UserBase;
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}
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inline unsigned int get_threadno_bits()
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{
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#ifdef L4_32BIT
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return 18;
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#else
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#error "Unsupported architecture."
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#endif
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}
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}
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#endif /* _INCLUDE__PISTACHIO__KIP_H_ */
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