repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
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 | #include "config.h" | |
| 27 | ||
| 28 | #define AV_READ_TIME read_time | |
| 29 | ||
| 30 | static inline uint64_t read_time(void) | |
| 31 | { | |
| 32 | uint32_t tbu, tbl, temp; | |
| 33 | ||
| 34 | /* from section 2.2.1 of the 32-bit PowerPC PEM */ | |
| 35 | __asm__ volatile( | |
| 36 | "mftbu %2\n" | |
| 37 | "mftb %0\n" | |
| 38 | "mftbu %1\n" | |
| 39 | "cmpw %2,%1\n" | |
| 40 | "bne $-0x10\n" | |
| 41 | : "=r"(tbl), "=r"(tbu), "=r"(temp) | |
| 42 | : | |
| 43 | : "cc"); | |
| 44 | ||
| 45 | return (((uint64_t)tbu)<<32) | (uint64_t)tbl; | |
| 46 | } | |
| 47 | ||
| 48 | #endif /* AVUTIL_PPC_TIMER_H */ |