1 /*

2 Copyright 2004 John Tsiombikas <nuclear@siggraph.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 #include "config.h"

22

23 #include <stdio.h>

24 #include <stdarg.h>

25 #include "syscall.h"

26

27 void halt(void)

28 {

29 __syscall(2);

30 }

31

32 void stop(void)

33 {

34 __syscall(3);

35 }

36

37 void print_vba(const char *str, ...)

38 {

39 char buf[128];

40 va_list arg_list;

41

42 va_start(arg_list, str);

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

44 va_end(arg_list);

45

46 __asm__ __volatile__(

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

48 "swi 0xff0000\n\t" :

49 : "r" (buf)

50 : "r0"

51 );

52 }