kernel/include/system.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2007  Tomas 'ZeXx86' Jedrzejek (zexx86@gmail.com)
   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 __SYSTEM_H
  21 #define __SYSTEM_H
  22
  23 #define MAX_VC  12
  24 #include "fdc.h"
  25 #include "mytypes.h"
  26 #include "dev.h"
  27 #include "user.h"
  28 #include "tty.h"
  29 #include "partition.h"
  30 #include "../drivers/char/video/video.h"
  31
  32 tty_t *currtty;
  33
  34 #define CONSOLE_LOG     30
  35
  36 /* keys */
  37 char key;
  38 unsigned key_state;
  39
  40 unsigned debug;         // developer mode
  41
  42 unsigned long long ctps;        // cpu ticks per second
  43
  44 partition_t *curr_part;
  45
  46 /* This defines what the stack looks like after an ISR was running */
  47 struct regs
  48 {
  49         unsigned int ds, es, fs, gs;
  50         unsigned int edi, esi, ebp, esp, ebx, edx, ecx, eax;
  51         unsigned int int_no, err_code;
  52         unsigned int eip, cs, eflags, useresp, ss;
  53 };
  54
  55 #define _set_gate(gate_addr,type,dpl,addr) \
  56 __asm__ ("movw %%dx,%%ax\n\t" \
  57         "movw %0,%%dx\n\t" \
  58         "movl %%eax,%1\n\t" \
  59         "movl %%edx,%2" \
  60         : \
  61         : "i" ((short) (0x8000+(dpl<<13)+(type<<8))), \
  62         "o" (*((char *) (gate_addr))), \
  63         "o" (*(4+(char *) (gate_addr))), \
  64         "d" ((char *) (addr)),"a" (0x00080000))
  65
  66
  67 struct dir{
  68         char name[10];
  69         int read;
  70         int hidden;
  71         int system;
  72         int volume;
  73         int dir;
  74         int bin;
  75         unsigned int start;
  76 } dir[223];
  77
  78 unsigned char *file_cache;
  79
  80 /** externs **/
  81
  82 /* init.c */
  83 extern int init ();
  84
  85 /* memory.c */
  86 extern void *malloc (unsigned size);
  87 extern void *realloc(void *blk, unsigned size);
  88 extern void free (void *blk);
  89
  90 extern unsigned int init_mm ();
  91
  92 /* console.c */
  93 extern unsigned int init_console ();
  94
  95 /* elf.c */
  96 extern int exec_elf (unsigned char *image, unsigned *entry);
  97 extern int flush_elf ();
  98
  99 /* exec.c */
 100 extern bool exec (unsigned char *fi);
 101
 102 /* gtd.c */
 103 extern void gdt_set_gate(int num, unsigned long base, unsigned long limit, unsigned char access, unsigned char gran);
 104 extern unsigned int gdt_install();
 105
 106 /* idt.c */
 107 extern void idt_set_gate(unsigned char num, unsigned long base, unsigned short sel, unsigned char flags);
 108 extern unsigned int idt_install();
 109
 110 /* isrs.c */
 111 extern unsigned int isrs_install();
 112
 113 /* irq.c */
 114 extern void irq_install_handler (int irq, void (*handler)(struct regs *r));
 115 extern void irq_uninstall_handler (int irq);
 116 extern unsigned int irq_install ();
 117
 118 /* timer.c */
 119 extern void timer_wait (int ticks);
 120 extern unsigned int timer_install ();
 121
 122 /* keyboard.c */
 123 extern unsigned int keyboard_install ();
 124
 125 extern unsigned int init_tasks (void);
 126 extern void schedule (void);
 127 extern unsigned int floppy_install (void);
 128 extern void fda_print (int i);
 129 extern void console (int i);
 130 extern void uptime (void);
 131
 132 /* fat.c */
 133 extern void read_dir (int aa);
 134 extern unsigned long read_file (int aa);
 135
 136 /* ls.c */
 137 extern int ls (unsigned char* fi);
 138
 139 /* cd.c */
 140 extern int cd (unsigned char* fi);
 141
 142 /* cat.c */
 143 extern int cat (partition_t *p, unsigned char *fi);
 144
 145 #endif