1 #include <stdio.h>

2 #include "vid.h"

3 #include "term.h"

4 #include <asmops.h>

5 #include "segm.h"

6 #include "intr.h"

7 #include "panic.h"

8

9 /* special keys */

10 enum {

11 LALT, RALT,

12 LCTRL, RCTRL,

13 LSHIFT, RSHIFT,

14 F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12,

15 CAPSLK, NUMLK, SCRLK, SYSRQ,

16 ESC = 27,

17 INSERT, DEL, HOME, END, PGUP, PGDN, LEFT, RIGHT, UP, DOWN,

18 NUM_DOT, NUM_ENTER, NUM_PLUS, NUM_MINUS, NUM_MUL, NUM_DIV,

19 NUM_0, NUM_1, NUM_2, NUM_3, NUM_4, NUM_5, NUM_6, NUM_7, NUM_8, NUM_9,

20 BACKSP = 127

21 };

22

23 /* table with rough translations from set 1 scancodes to ASCII-ish */

24 static int keycodes[] = {

25 0, ESC, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', '\b', /* 0 - e */

26 '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n', /* f - 1c */

27 LCTRL, 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`', /* 1d - 29 */

28 LSHIFT, '\\', 'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', RSHIFT, /* 2a - 36 */

29 NUM_MUL, LALT, ' ', CAPSLK, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, /* 37 - 44 */

30 NUMLK, SCRLK, NUM_7, NUM_8, NUM_9, NUM_MINUS, NUM_4, NUM_5, NUM_6, NUM_PLUS, /* 45 - 4e */

31 NUM_1, NUM_2, NUM_3, NUM_0, NUM_DOT, SYSRQ, 0, 0, F11, F12, /* 4d - 58 */

32 0, 0, 0, 0, 0, 0, 0, /* 59 - 5f */

33 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 60 - 6f */

34 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 70 - 7f */

35 };

36

37 void kmain(void)

38 {

39 clear_scr();

40 puts("kernel starting up");

41

42 init_segm();

43 init_intr();

44

45 set_text_color(YELLOW);

46 puts("<initialization code goes here>");

47 set_text_color(LTGRAY);

48 puts("hello world!");

49

50 asm volatile("int $0x80");

51

52 panic("foo\n");

53

54 for(;;) {

55 char c, keypress;

56 do {

57 inb(keypress, 0x64);

58 } while(!(keypress & 1));

59 inb(c, 0x60);

60 if(!(c & 0x80)) {

61 putchar(keycodes[(int)c]);

62 }

63 }

64 }