annotate src/syscall.c @ 2:e3dc7705ad9c
communications stuff
author |
John Tsiombikas <nuclear@member.fsf.org> |
date |
Wed, 07 Mar 2012 06:11:51 +0200 |
parents |
875ef6085efc |
children |
72c6429ae953 |
rev |
line source |
nuclear@0
|
1 /*
|
nuclear@0
|
2 Copyright 2004 John Tsiombikas <nuclear@siggraph.org>
|
nuclear@0
|
3
|
nuclear@1
|
4 This file is part of gbasys, a library for GameBoy Advance development.
|
nuclear@0
|
5
|
nuclear@0
|
6 This program is free software; you can redistribute it and/or modify
|
nuclear@0
|
7 it under the terms of the GNU General Public License as published by
|
nuclear@0
|
8 the Free Software Foundation; either version 2 of the License, or
|
nuclear@0
|
9 (at your option) any later version.
|
nuclear@0
|
10
|
nuclear@0
|
11 This program is distributed in the hope that it will be useful,
|
nuclear@0
|
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
|
nuclear@0
|
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
nuclear@0
|
14 GNU General Public License for more details.
|
nuclear@0
|
15
|
nuclear@0
|
16 You should have received a copy of the GNU General Public License
|
nuclear@0
|
17 along with this program; if not, write to the Free Software
|
nuclear@0
|
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
nuclear@0
|
19 */
|
nuclear@0
|
20
|
nuclear@1
|
21 #include "config.h"
|
nuclear@0
|
22
|
nuclear@0
|
23 #include <stdio.h>
|
nuclear@0
|
24 #include <stdarg.h>
|
nuclear@0
|
25 #include "syscall.h"
|
nuclear@0
|
26
|
nuclear@1
|
27 void halt(void)
|
nuclear@1
|
28 {
|
nuclear@0
|
29 __syscall(2);
|
nuclear@0
|
30 }
|
nuclear@0
|
31
|
nuclear@1
|
32 void stop(void)
|
nuclear@1
|
33 {
|
nuclear@0
|
34 __syscall(3);
|
nuclear@0
|
35 }
|
nuclear@0
|
36
|
nuclear@1
|
37 void print_vba(const char *str, ...)
|
nuclear@1
|
38 {
|
nuclear@0
|
39 char buf[128];
|
nuclear@0
|
40 va_list arg_list;
|
nuclear@0
|
41
|
nuclear@0
|
42 va_start(arg_list, str);
|
nuclear@0
|
43 vsnprintf(buf, 128, str, arg_list);
|
nuclear@0
|
44 va_end(arg_list);
|
nuclear@0
|
45
|
nuclear@0
|
46 __asm__ __volatile__(
|
nuclear@0
|
47 "mov r0, %0\n\t"
|
nuclear@0
|
48 "swi 0xff0000\n\t" :
|
nuclear@0
|
49 : "r" (buf)
|
nuclear@0
|
50 : "r0"
|
nuclear@0
|
51 );
|
nuclear@0
|
52 }
|