1 /*

2 Copyright 2004-2012 John Tsiombikas <nuclear@member.fsf.org>

3

4 This file is part of gbasys, a library for GameBoy Advance development.

5

6 This program is free software; you can redistribute it and/or modify

7 it under the terms of the GNU General Public License as published by

8 the Free Software Foundation; either version 2 of the License, or

9 (at your option) any later version.

10

11 This program is distributed in the hope that it will be useful,

12 but WITHOUT ANY WARRANTY; without even the implied warranty of

13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

14 GNU General Public License for more details.

15

16 You should have received a copy of the GNU General Public License

17 along with this program; if not, write to the Free Software

18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

19 */

20

21 #ifndef _INTR_H_

22 #define _INTR_H_

23

24 /* interrupts */

25 enum {

26 INTR_VBLANK,

27 INTR_HBLANK,

28 INTR_VCOUNT,

29 INTR_TIMER0,

30 INTR_TIMER1,

31 INTR_TIMER2,

32 INTR_TIMER3,

33 INTR_COMM,

34 INTR_DMA0,

35 INTR_DMA1,

36 INTR_DMA2,

37 INTR_DMA3,

38 INTR_KEY,

39 INTR_GPAK

40 };

41

42 extern unsigned short *reg_int_master;

43 extern unsigned short *reg_int_mask;

44

45 void intr_init(void);

46

47 /* set/clear interrupts */

48 #define set_int() do {*reg_int_master = 1;} while(0)

49 #define clr_int() do {*reg_int_master = 0;} while(0)

50

51 /* set an interrupt handler */

52 void interrupt(int intr, void (*handler)(void));

53

54 /* mask/unmask an interrupt */

55 #define mask(intr) do {*reg_int_mask ^= 1 << (intr);} while(0)

56 #define unmask(intr) do {*reg_int_mask |= 1 << (intr);} while(0)

57

58 #endif /* _INTR_H_ */