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comparison libavutil/ppc/timer.h @ 9:ea1ba68cf0ed

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update to match api changes + add sscc produced source
author Nina Engelhardt <nengel@mailbox.tu-berlin.de>
date Wed, 05 Jun 2013 14:43:26 +0200
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1 /*
2 * Copyright (c) 2005 Luca Barbato <lu_zero@gentoo.org>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef AVUTIL_PPC_TIMER_H
22 #define AVUTIL_PPC_TIMER_H
23
24 #include <stdint.h>
25
26 #define AV_READ_TIME read_time
27
28 static inline uint64_t read_time(void)
29 {
30 uint32_t tbu, tbl, temp;
31
32 /* from section 2.2.1 of the 32-bit PowerPC PEM */
33 __asm__ volatile(
34 "1:\n"
35 "mftbu %2\n"
36 "mftb %0\n"
37 "mftbu %1\n"
38 "cmpw %2,%1\n"
39 "bne 1b\n"
40 : "=r"(tbl), "=r"(tbu), "=r"(temp)
41 :
42 : "cc");
43
44 return (((uint64_t)tbu)<<32) | (uint64_t)tbl;
45 }
46
47 #endif /* AVUTIL_PPC_TIMER_H */