modules/include/kmod.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2007  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
  20 #ifndef _KMOD_H
  21 #define _KMOD_H
  22
  23 #include <string.h>
  24
  25 #define module_init(x) \
  26         void _kmod_init () { (&x) (); }
  27
  28 #define module_exit(x) \
  29         void _kmod_exit () { (&x) (); }
  30
  31 #define kputs(text) \
  32         __asm__ ( \
  33                 "movl $29, %%eax;" \
  34                 "movl %0, %%ebx;" \
  35                 "int $0x80;" :: "b" (text) : "%eax", "memory")
  36
  37 typedef int __init;
  38 typedef int __exit;
  39
  40 /* port work */
  41 #define outb(value,port) \
  42 __asm__ ("outb %%al,%%dx"::"a" (value),"d" (port))
  43
  44
  45 #define inb(port) ({ \
  46 unsigned char _v; \
  47 __asm__ volatile ("inb %%dx,%%al":"=a" (_v):"d" (port)); \
  48 _v; \
  49 })
  50
  51 #define outb_p(value,port) \
  52 __asm__ ("outb %%al,%%dx\n" \
  53                 "\tjmp 1f\n" \
  54                 "1:\tjmp 1f\n" \
  55                 "1:"::"a" (value),"d" (port))
  56
  57 #define inb_p(port) ({ \
  58 unsigned char _v; \
  59 __asm__ volatile ("inb %%dx,%%al\n" \
  60         "\tjmp 1f\n" \
  61         "1:\tjmp 1f\n" \
  62         "1:":"=a" (_v):"d" (port)); \
  63 _v; \
  64 })
  65
  66 #endif
  67