kernel/arch/x86_64/arch.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2008  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   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 unsigned int_enable ()
  20 {
  21         __asm__ __volatile__("sti"
  22                 :
  23                 :
  24                 );
  25
  26         return 1;
  27 }
  28
  29 unsigned int_disable ()
  30 {
  31         __asm__ __volatile__("cli");
  32
  33         return 1;
  34 }
  35
  36 static void draw_arch ()
  37 {
  38         unsigned char *textmemptr = (unsigned char *) 0xB8000;
  39
  40         textmemptr += 8*160;
  41
  42         textmemptr[0] = 'x';
  43         textmemptr[1] = 0x0f;
  44         textmemptr[2] = '8';
  45         textmemptr[3] = 0x0f;
  46         textmemptr[4] = '6';
  47         textmemptr[5] = 0x0f;
  48         textmemptr[6] = '_';
  49         textmemptr[7] = 0x0f;
  50         textmemptr[8] = '6';
  51         textmemptr[9] = 0x0f;
  52         textmemptr[10] = '4';
  53         textmemptr[11] = 0x0f;
  54 }
  55
  56 unsigned init_arch ()
  57 {
  58
  59
  60         if (!gdt_install ())
  61                 return 0;
  62         draw_arch ();
  63         if (!idt_install ())
  64                 return 0;
  65
  66         if (!isrs_install ())
  67                 return 0;
  68
  69         if (!irq_install ())
  70                 return 0;
  71
  72         return 1;
  73 }
  74
  75 void halt ()
  76 {
  77         __asm__ __volatile__("hlt");
  78 }