1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/syscall.c	Sun Mar 04 04:04:25 2012 +0200
     1.3 @@ -0,0 +1,49 @@
     1.4 +/*
     1.5 +Copyright 2004 John Tsiombikas <nuclear@siggraph.org>
     1.6 +
     1.7 +This file is part of libgba, a library for GameBoy Advance development.
     1.8 +
     1.9 +This program is free software; you can redistribute it and/or modify
    1.10 +it under the terms of the GNU General Public License as published by
    1.11 +the Free Software Foundation; either version 2 of the License, or
    1.12 +(at your option) any later version.
    1.13 +
    1.14 +This program is distributed in the hope that it will be useful,
    1.15 +but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.16 +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.17 +GNU General Public License for more details.
    1.18 +
    1.19 +You should have received a copy of the GNU General Public License
    1.20 +along with this program; if not, write to the Free Software
    1.21 +Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    1.22 +*/
    1.23 +
    1.24 +#include "libgba_config.h"
    1.25 +
    1.26 +#include <stdio.h>
    1.27 +#include <stdarg.h>
    1.28 +#include "syscall.h"
    1.29 +
    1.30 +void halt(void) {
    1.31 +	__syscall(2);
    1.32 +}
    1.33 +
    1.34 +void stop(void) {
    1.35 +	__syscall(3);
    1.36 +}
    1.37 +
    1.38 +void print_vba(const char *str, ...) {
    1.39 +	char buf[128];
    1.40 +	va_list arg_list;
    1.41 +
    1.42 +	va_start(arg_list, str);
    1.43 +	vsnprintf(buf, 128, str, arg_list);
    1.44 +	va_end(arg_list);
    1.45 +
    1.46 +	__asm__ __volatile__(
    1.47 +		"mov r0, %0\n\t"
    1.48 +		"swi 0xff0000\n\t" :
    1.49 +		: "r" (buf)
    1.50 +		: "r0"
    1.51 +	);
    1.52 +}