kernel2/include/tss.h

   1 /*
   2     meinOS - A unix-like x86 microkernel operating system
   3     Copyright (C) 2008  Janosch Gräf <janosch.graef@gmx.net>
   4
   5     This program is free software: you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation, either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #ifndef _TSS_H_
  20 #define _TSS_H_
  21
  22 #include <stdint.h>
  23
  24 #define TSS_IOPB_SIZE 2048
  25
  26 typedef struct {
  27   uint32_t backlink;
  28   uint32_t esp0;
  29   uint32_t ss0;
  30   uint32_t esp1;
  31   uint32_t ss1;
  32   uint32_t esp2;
  33   uint32_t ss2;
  34   uint32_t cr3;
  35   uint32_t eip;
  36   uint32_t efl;
  37   uint32_t eax;
  38   uint32_t ecx;
  39   uint32_t edx;
  40   uint32_t ebx;
  41   uint32_t esp;
  42   uint32_t ebp;
  43   uint32_t esi;
  44   uint32_t edi;
  45   uint32_t es;
  46   uint32_t cs;
  47   uint32_t ss;
  48   uint32_t ds;
  49   uint32_t fs;
  50   uint32_t gs;
  51   uint32_t ldtr;
  52   uint16_t res;
  53   uint16_t iopb_offset;
  54   uint32_t iopb[TSS_IOPB_SIZE];
  55 } __attribute__ ((packed)) tss_t;
  56
  57 int tss_init();
  58
  59 #endif