geek OS project 0 （下）

 1/*
 2 * GeekOS C code entry point
 3 * Copyright (c) 2001,2003,2004 David H. Hovemeyer <daveho@cs.umd.edu>
 4 * Copyright (c) 2003, Jeffrey K. Hollingsworth <hollings@cs.umd.edu>
 5 * Copyright (c) 2004, Iulian Neamtiu <neamtiu@cs.umd.edu>
 6 * $Revision: 1.51 $
 7 * 
 8 * This is free software.  You are permitted to use,
 9 * redistribute, and modify it as specified in the file "COPYING".
10 */
11
12#include <geekos/bootinfo.h>
13#include <geekos/string.h>
14#include <geekos/screen.h>
15#include <geekos/mem.h>
16#include <geekos/crc32.h>
17#include <geekos/tss.h>
18#include <geekos/int.h>
19#include <geekos/kthread.h>
20#include <geekos/trap.h>
21#include <geekos/timer.h>
22#include <geekos/keyboard.h>
23
24//added by 111qqz for project 0
25void project0()
26{
27    Print("To Exit hit Ctrl + d.\n");
28    Print("Hello from 111qqz !\n"); 
29    Print("This is a test of project0 !\n");
30
31
32
33    Keycode keycode;
34    while(1)
35    {
36        if( Read_Key(&keycode) )    //读取键盘按键状态
37        {
38            if(!( (keycode & KEY_SPECIAL_FLAG) || (keycode & KEY_RELEASE_FLAG)) ) //只处理非特殊按键的按下事件
39            {                
40                 int asciiCode = keycode &  0xff;    //低8位为Ascii码
41
42                if( (keycode & KEY_CTRL_FLAG)==KEY_CTRL_FLAG  &&  asciiCode=='d')    //按下Ctrl键
43                {
44                    Print("\n---------BYE!--------\n");
45                    Exit(1);                      
46                }else
47                {
48                    Print("%c",(asciiCode=='\r') ? '\n' : asciiCode);
49                }
50            } 
51        }
52    }
53}
54
55
56/*
57 * Kernel C code entry point.
58 * Initializes kernel subsystems, mounts filesystems,
59 * and spawns init process.
60 */
61void Main(struct Boot_Info* bootInfo)
62{
63    Init_BSS();
64    Init_Screen();
65    Init_Mem(bootInfo);
66    Init_CRC32();
67    Init_TSS();
68    Init_Interrupts();
69    Init_Scheduler();
70    Init_Traps();
71    Init_Timer();
72    Init_Keyboard();
73
74
75    Set_Current_Attr(ATTRIB(BLACK, GREEN|BRIGHT));
76    Print("Welcome 111qqz to GeekOS!\n");
77    Set_Current_Attr(ATTRIB(BLACK, GRAY));
78
79
80
81   // TODO("Start a kernel thread to echo pressed keys and print counts");
82    //added by 111qqz for project 0
83          struct Kernel_Thread *thread;
84    thread = Start_Kernel_Thread(&project0,0,PRIORITY_NORMAL,false);
85      // added for project 0 end
86
87
88    /* Now this thread is done. */
89    Exit(0);
90}

1#define TODO(message)					\
2do {							\
3    Set_Current_Attr(ATTRIB(BLUE, GRAY|BRIGHT));	\
4    Print("Unimplemented feature: %s\n", (message));	\
5    while (1)						\
6	;						\
7} while (0)