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Differences between /hwcore/gdt.h (Article 3) and /hwcore/gdt.h (Article 4)


001 /* Copyright (C) 2004  David Decotigny            001 /* Copyright (C) 2004  David Decotigny
002    Copyright (C) 1999  Free Software Foundatio    002    Copyright (C) 1999  Free Software Foundation, Inc.
003                                                   003 
004    This program is free software; you can redi    004    This program is free software; you can redistribute it and/or
005    modify it under the terms of the GNU Genera    005    modify it under the terms of the GNU General Public License
006    as published by the Free Software Foundatio    006    as published by the Free Software Foundation; either version 2
007    of the License, or (at your option) any lat    007    of the License, or (at your option) any later version.
008                                                   008    
009    This program is distributed in the hope tha    009    This program is distributed in the hope that it will be useful,
010    but WITHOUT ANY WARRANTY; without even the     010    but WITHOUT ANY WARRANTY; without even the implied warranty of
011    MERCHANTABILITY or FITNESS FOR A PARTICULAR    011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012    GNU General Public License for more details    012    GNU General Public License for more details.
013                                                   013    
014    You should have received a copy of the GNU     014    You should have received a copy of the GNU General Public License
015    along with this program; if not, write to t    015    along with this program; if not, write to the Free Software
016    Foundation, Inc., 59 Temple Place - Suite 3    016    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
017    USA.                                           017    USA. 
018 */                                                018 */
019 #ifndef _SOS_GDT_H_                               019 #ifndef _SOS_GDT_H_
020 #define _SOS_GDT_H_                               020 #define _SOS_GDT_H_
021                                                   021 
022 /**                                               022 /**
023  * @file gdt.h                                    023  * @file gdt.h
024  *                                                024  *
025  * The routines that manage the GDT, the table    025  * The routines that manage the GDT, the table that maps the virtual
026  * addresses (data/instructions, segment-relat    026  * addresses (data/instructions, segment-relative), to "linear"
027  * addresses (ie paged-memory). In SOS/x86, we    027  * addresses (ie paged-memory). In SOS/x86, we use a "flat" virtual
028  * space, ie the virtual and linear spaces are    028  * space, ie the virtual and linear spaces are equivalent.
029  *                                                029  *
030  * @see Intel x86 doc vol 3, chapter 3            030  * @see Intel x86 doc vol 3, chapter 3
031  */                                               031  */
032                                                   032 
033 #include <sos/errno.h>                            033 #include <sos/errno.h>
034                                                   034 
035 /**                                               035 /**
036  * Configure the virtual space as a direct map    036  * Configure the virtual space as a direct mapping to the linear
037  * address space (ie "flat" virtual space).       037  * address space (ie "flat" virtual space).
038  */                                               038  */
039 sos_ret_t sos_gdt_setup(void);                    039 sos_ret_t sos_gdt_setup(void);
040                                                   040 
041 #endif /* _SOS_GDT_H_ */                          041 #endif /* _SOS_GDT_H_ */
                                                      

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