| /* | |
| * Copyright © 2023 Rémi Denis-Courmont. | |
| * | |
| * 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 | |
| */ | |
| #include "config.h" | |
| #include "libavutil/riscv/asm.S" | |
| func ff_extract_exponents_rvb, zbb | |
| 1: | |
| lw t0, (a1) | |
| addi a0, a0, 1 | |
| neg t1, t0 | |
| addi a1, a1, 4 | |
| max t0, t0, t1 | |
| addi a2, a2, -1 | |
| clz t0, t0 | |
| addi t0, t0, 24 - __riscv_xlen | |
| sb t0, -1(a0) | |
| bgtz a2, 1b | |
| ret | |
| endfunc |