matos/arch/x86/gdt.h
2020-04-27 23:45:38 +02:00

37 lines
1.3 KiB
C

/* Copyright (C) 2004 David Decotigny
Copyright (C) 1999 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA.
*/
#pragma once
/**
* @file gdt.h
*
* The routines that manage the GDT, the table that maps the virtual
* addresses (data/instructions, segment-relative), to "linear"
* addresses (ie paged-memory). Here, we use a "flat" virtual
* space, ie the virtual and linear spaces are equivalent.
*
* @see Intel x86 doc vol 3, chapter 3
*/
/**
* Configure the virtual space as a direct mapping to the linear
* address space (ie "flat" virtual space).
*/
int gdtSetup(void);