View of xos/include/system_structs.h

/* Copyright (C) 2008  Emmanuel Varoquaux
 
   This file is part of XOS.
 
   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 3 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, see <http://www.gnu.org/licenses/>. */
 
#ifndef _SYSTEM_STRUCTS_H
#define _SYSTEM_STRUCTS_H
 
struct __attribute__ ((packed)) descr_struct {
  union {
    struct { /* segment */
      unsigned short limit1;
      unsigned short base1;
      unsigned char base2;
      unsigned char flags1;
      unsigned char limit2_flags2;
      unsigned char base3;
    };
    struct { /* gate */
      unsigned short offset1;
      unsigned short selector;
      unsigned char dword_count;
      unsigned char flags;
      unsigned short offset2;
    };
  };
};
 
struct __attribute__ ((packed)) tss_struct {
  unsigned short previous;
  unsigned short res1;
  unsigned long esp0;
  unsigned short ss0;
  unsigned short res2;
  unsigned long esp1;
  unsigned short ss1;
  unsigned short res3;
  unsigned long esp2;
  unsigned short ss2;
  unsigned short res4;
  unsigned long cr3;
  unsigned long eip;
  unsigned long eflags;
  unsigned long eax;
  unsigned long ecx;
  unsigned long edx;
  unsigned long ebx;
  unsigned long esp;
  unsigned long ebp;
  unsigned long esi;
  unsigned long edi;
  unsigned short es;
  unsigned short res5;
  unsigned short cs;
  unsigned short res6;
  unsigned short ss;
  unsigned short res7;
  unsigned short ds;
  unsigned short res8;
  unsigned short fs;
  unsigned short res9;
  unsigned short gs;
  unsigned short res10;
  unsigned short ldt;
  unsigned short res11;
  unsigned short trap_res12;
  unsigned short iomap_base;
};
 
#endif