| /* | |
| * Copyright (c) 2005 Luca Barbato <[email protected]> | |
| * | |
| * This file is part of FFmpeg. | |
| * | |
| * FFmpeg is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU Lesser General Public | |
| * License as published by the Free Software Foundation; either | |
| * version 2.1 of the License, or (at your option) any later version. | |
| * | |
| * FFmpeg is distributed in the hope that it will be useful, | |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| * Lesser General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU Lesser General Public | |
| * License along with FFmpeg; if not, write to the Free Software | |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| */ | |
| static inline uint64_t read_time(void) | |
| { | |
| uint32_t tbu, tbl, temp; | |
| /* from section 2.2.1 of the 32-bit PowerPC PEM */ | |
| __asm__ volatile( | |
| "mftbu %2\n" | |
| "mftb %0\n" | |
| "mftbu %1\n" | |
| "cmpw %2,%1\n" | |
| "bne $-0x10\n" | |
| : "=r"(tbl), "=r"(tbu), "=r"(temp) | |
| : | |
| : "cc"); | |
| return (((uint64_t)tbu)<<32) | (uint64_t)tbl; | |
| } | |