nuclear@0: /*
nuclear@7: gbasys - a gameboy advance hardware abstraction library
nuclear@7: Copyright (C) 2004-2014  John Tsiombikas <nuclear@member.fsf.org>
nuclear@0: 
nuclear@7: This program is free software: you can redistribute it and/or modify
nuclear@0: it under the terms of the GNU General Public License as published by
nuclear@7: the Free Software Foundation, either version 3 of the License, or
nuclear@0: (at your option) any later version.
nuclear@0: 
nuclear@0: This program is distributed in the hope that it will be useful,
nuclear@0: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@0: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@0: GNU General Public License for more details.
nuclear@0: 
nuclear@0: You should have received a copy of the GNU General Public License
nuclear@7: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@0: */
nuclear@1: #include "config.h"
nuclear@0: 
nuclear@0: #include <stdio.h>
nuclear@0: #include <stdarg.h>
nuclear@0: #include "syscall.h"
nuclear@0: 
nuclear@1: void halt(void)
nuclear@1: {
nuclear@0: 	__syscall(2);
nuclear@0: }
nuclear@0: 
nuclear@1: void stop(void)
nuclear@1: {
nuclear@0: 	__syscall(3);
nuclear@0: }
nuclear@0: 
nuclear@1: void print_vba(const char *str, ...)
nuclear@1: {
nuclear@0: 	char buf[128];
nuclear@0: 	va_list arg_list;
nuclear@0: 
nuclear@0: 	va_start(arg_list, str);
nuclear@0: 	vsnprintf(buf, 128, str, arg_list);
nuclear@0: 	va_end(arg_list);
nuclear@0: 
nuclear@0: 	__asm__ __volatile__(
nuclear@0: 		"mov r0, %0\n\t"
nuclear@0: 		"swi 0xff0000\n\t" :
nuclear@0: 		: "r" (buf)
nuclear@0: 		: "r0"
nuclear@0: 	);
nuclear@0: }