gbasys

annotate src/syscall.c @ 7:72c6429ae953

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changed all the copyright headers and added a README
author John Tsiombikas <nuclear@member.fsf.org>
date Fri, 18 Apr 2014 02:04:46 +0300
parents c50064b181c2
children
rev   line source
nuclear@0 1 /*
nuclear@7 2 gbasys - a gameboy advance hardware abstraction library
nuclear@7 3 Copyright (C) 2004-2014 John Tsiombikas <nuclear@member.fsf.org>
nuclear@0 4
nuclear@7 5 This program is free software: you can redistribute it and/or modify
nuclear@0 6 it under the terms of the GNU General Public License as published by
nuclear@7 7 the Free Software Foundation, either version 3 of the License, or
nuclear@0 8 (at your option) any later version.
nuclear@0 9
nuclear@0 10 This program is distributed in the hope that it will be useful,
nuclear@0 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@0 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
nuclear@0 13 GNU General Public License for more details.
nuclear@0 14
nuclear@0 15 You should have received a copy of the GNU General Public License
nuclear@7 16 along with this program. If not, see <http://www.gnu.org/licenses/>.
nuclear@0 17 */
nuclear@1 18 #include "config.h"
nuclear@0 19
nuclear@0 20 #include <stdio.h>
nuclear@0 21 #include <stdarg.h>
nuclear@0 22 #include "syscall.h"
nuclear@0 23
nuclear@1 24 void halt(void)
nuclear@1 25 {
nuclear@0 26 __syscall(2);
nuclear@0 27 }
nuclear@0 28
nuclear@1 29 void stop(void)
nuclear@1 30 {
nuclear@0 31 __syscall(3);
nuclear@0 32 }
nuclear@0 33
nuclear@1 34 void print_vba(const char *str, ...)
nuclear@1 35 {
nuclear@0 36 char buf[128];
nuclear@0 37 va_list arg_list;
nuclear@0 38
nuclear@0 39 va_start(arg_list, str);
nuclear@0 40 vsnprintf(buf, 128, str, arg_list);
nuclear@0 41 va_end(arg_list);
nuclear@0 42
nuclear@0 43 __asm__ __volatile__(
nuclear@0 44 "mov r0, %0\n\t"
nuclear@0 45 "swi 0xff0000\n\t" :
nuclear@0 46 : "r" (buf)
nuclear@0 47 : "r0"
nuclear@0 48 );
nuclear@0 49 }