gbasys
annotate src/syscall.c @ 12:a6ddf338a111
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| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Mon, 01 Feb 2016 04:41:27 +0200 |
| 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 } |