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1 /*
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2 Copyright 2004-2012 John Tsiombikas <nuclear@member.fsf.org>
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3
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4 This file is part of gbasys, a library for GameBoy Advance development.
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5
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6 This program is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2 of the License, or
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9 (at your option) any later version.
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10
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11 This program is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with this program; if not, write to the Free Software
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18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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19 */
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20
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21 #ifndef _INTR_H_
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22 #define _INTR_H_
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23
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24 /* interrupts */
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25 enum {
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26 INTR_VBLANK,
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27 INTR_HBLANK,
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28 INTR_VCOUNT,
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29 INTR_TIMER0,
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30 INTR_TIMER1,
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31 INTR_TIMER2,
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32 INTR_TIMER3,
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33 INTR_COMM,
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34 INTR_DMA0,
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35 INTR_DMA1,
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36 INTR_DMA2,
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37 INTR_DMA3,
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38 INTR_KEY,
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39 INTR_GPAK
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40 };
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41
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42 extern unsigned short *reg_int_master;
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43 extern unsigned short *reg_int_mask;
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44
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45 void intr_init(void);
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46
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47 /* set/clear interrupts */
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48 #define set_int() do {*reg_int_master = 1;} while(0)
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49 #define clr_int() do {*reg_int_master = 0;} while(0)
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50
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51 /* set an interrupt handler */
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52 void interrupt(int intr, void (*handler)(void));
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53
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54 /* mask/unmask an interrupt */
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55 #define mask(intr) do {*reg_int_mask ^= 1 << (intr);} while(0)
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56 #define unmask(intr) do {*reg_int_mask |= 1 << (intr);} while(0)
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57
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58 #endif /* _INTR_H_ */
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