/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
			    global.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
						    Forrest Yu, 2005
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/*
 * To make things more direct. In the headers below,
 * the variable will be defined here.
 * added by xw, 18/6/17
 */
// #define GLOBAL_VARIABLES_HERE
#include "const.h"
#include "type.h"
#include "protect.h"
#include "proc.h"
#include "global.h"
#include "proto.h"
#include "fs_const.h"
#include "hd.h"
#include "fs.h"
#include "fat32.h" //added by mingxuan 2019-5-17
#include "vfs.h"   //added by mingxuan 2019-5-17

int kernel_initial;
int ticks;
int disp_pos;
u8 gdt_ptr[6];
DESCRIPTOR gdt[GDT_SIZE];
u8 idt_ptr[6];
GATE idt[IDT_SIZE];
u32 k_reenter;
int u_proc_sum;
TSS tss;
PROCESS *p_proc_current;
PROCESS *p_proc_next;

u32 cr3_ready;

/* save the execution environment of each cpu, which doesn't belong to any process.
 * added by xw, 18/6/1
 */
PROCESS cpu_table[NR_CPUS];

PROCESS proc_table[NR_PCBS]; // edit by visual 2016.4.5

TASK task_table[NR_TASKS] = {
    {hd_service, STACK_SIZE_TASK, "hd_service"},
    {task_tty, STACK_SIZE_TASK, "task_tty"}}; // added by xw, 18/8/27

irq_handler irq_table[NR_IRQ];

system_call sys_call_table[NR_SYS_CALL] = {
    sys_get_ticks,  // 1st
    sys_get_pid,    // add by visual 2016.4.6
    sys_kmalloc,    // add by visual 2016.4.6
    sys_kmalloc_4k, // add by visual 2016.4.7
    sys_malloc,	    // add by visual 2016.4.7	//5th
    sys_malloc_4k,  // add by visual 2016.4.7
    sys_free,	    // add by visual 2016.4.7
    sys_free_4k,    // add by visual 2016.4.7
    sys_fork,	    // add by visual 2016.4.8
    sys_pthread,    // add by visual 2016.4.11	//10th
    sys_udisp_int,  // add by visual 2016.5.16
    sys_udisp_str,  // add by visual 2016.5.16
    sys_exec,	    // add by visual 2016.5.16
    sys_yield,	    // added by xw
    sys_sleep,	    // added by xw				//15th
    sys_print_E,    // added by xw
    sys_print_F,    // added by xw
    sys_open,	    // added by xw, 18/6/18
    sys_close,	    // added by xw, 18/6/18
    sys_read,	    // added by xw, 18/6/18		//20th
    sys_write,	    // added by xw, 18/6/18
    sys_lseek,	    // added by xw, 18/6/18
    sys_unlink,	    // added by xw, 18/6/19		//23th
    sys_create,	    // added by mingxuan 2019-5-17
    sys_delete,	    // added by mingxuan 2019-5-17
    sys_opendir,    // added by mingxuan 2019-5-17
    sys_createdir,  // added by mingxuan 2019-5-17
    sys_deletedir   // added by mingxuan 2019-5-17
};

TTY tty_table[NR_CONSOLES];	    // added by mingxuan 2019-5-19
CONSOLE console_table[NR_CONSOLES]; // added by mingxuan 2019-5-19