1 /*

2 Copyright 2004 John Tsiombikas <nuclear@siggraph.org>

3

4 This file is part of libgba, 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 #include "libgba_config.h"

22

23 #include <stdio.h>

24 #include <stdarg.h>

25 #include "syscall.h"

26

27 void halt(void) {

28 __syscall(2);

29 }

30

31 void stop(void) {

32 __syscall(3);

33 }

34

35 void print_vba(const char *str, ...) {

36 char buf[128];

37 va_list arg_list;

38

39 va_start(arg_list, str);

40 vsnprintf(buf, 128, str, arg_list);

41 va_end(arg_list);

42

43 __asm__ __volatile__(

44 "mov r0, %0\n\t"

45 "swi 0xff0000\n\t" :

46 : "r" (buf)

47 : "r0"

48 );

49 }