mirror of https://github.com/FFmpeg/FFmpeg.git
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/* |
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* Copyright (c) 2024 Institue of Software Chinese Academy of Sciences (ISCAS). |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavutil/riscv/asm.S" |
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.macro vsetvlstatic8 w, vlen |
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.if \w == 2 && \vlen == 128 |
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vsetivli zero, \w, e8, mf8, ta, ma |
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.elseif \w <= 4 && \vlen == 128 |
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vsetivli zero, \w, e8, mf4, ta, ma |
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.elseif \w <= 8 && \vlen == 128 |
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vsetivli zero, \w, e8, mf2, ta, ma |
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.elseif \w <= 16 && \vlen == 128 |
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vsetivli zero, \w, e8, m1, ta, ma |
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.elseif \w <= 32 && \vlen == 128 |
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li t0, \w |
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vsetvli zero, t0, e8, m2, ta, ma |
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.elseif \w <= 4 && \vlen == 256 |
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vsetivli zero, \w, e8, mf8, ta, ma |
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.elseif \w <= 8 && \vlen == 256 |
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vsetivli zero, \w, e8, mf4, ta, ma |
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.elseif \w <= 16 && \vlen == 256 |
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vsetivli zero, \w, e8, mf2, ta, ma |
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.elseif \w <= 32 && \vlen == 256 |
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li t0, \w |
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vsetvli zero, t0, e8, m1, ta, ma |
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.elseif \w <= 64 && \vlen == 256 |
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li t0, \w |
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vsetvli zero, t0, e8, m2, ta, ma |
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.else |
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li t0, \w |
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vsetvli zero, t0, e8, m4, ta, ma |
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.endif |
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.endm |
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.macro vsetvlstatic16 w, vlen |
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.if \w == 2 && \vlen == 128 |
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vsetivli zero, \w, e16, mf4, ta, ma |
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.elseif \w <= 4 && \vlen == 128 |
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vsetivli zero, \w, e16, mf2, ta, ma |
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.elseif \w <= 8 && \vlen == 128 |
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vsetivli zero, \w, e16, m1, ta, ma |
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.elseif \w <= 16 && \vlen == 128 |
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vsetivli zero, \w, e16, m2, ta, ma |
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.elseif \w <= 32 && \vlen == 128 |
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li t0, \w |
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vsetvli zero, t0, e16, m4, ta, ma |
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.elseif \w <= 4 && \vlen == 256 |
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vsetivli zero, \w, e16, mf4, ta, ma |
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.elseif \w <= 8 && \vlen == 256 |
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vsetivli zero, \w, e16, mf2, ta, ma |
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.elseif \w <= 16 && \vlen == 256 |
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vsetivli zero, \w, e16, m1, ta, ma |
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.elseif \w <= 32 && \vlen == 256 |
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li t0, \w |
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vsetvli zero, t0, e16, m2, ta, ma |
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.elseif \w <= 64 && \vlen == 256 |
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li t0, \w |
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vsetvli zero, t0, e16, m4, ta, ma |
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.else |
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li t0, \w |
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vsetvli zero, t0, e16, m8, ta, ma |
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.endif |
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.endm |
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.macro vsetvlstatic32 w, vlen |
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.if \w == 2 |
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vsetivli zero, \w, e32, mf2, ta, ma |
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.elseif \w <= 4 && \vlen == 128 |
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vsetivli zero, \w, e32, m1, ta, ma |
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.elseif \w <= 8 && \vlen == 128 |
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vsetivli zero, \w, e32, m2, ta, ma |
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.elseif \w <= 16 && \vlen == 128 |
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vsetivli zero, \w, e32, m4, ta, ma |
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.elseif \w <= 4 && \vlen == 256 |
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vsetivli zero, \w, e32, mf2, ta, ma |
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.elseif \w <= 8 && \vlen == 256 |
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vsetivli zero, \w, e32, m1, ta, ma |
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.elseif \w <= 16 && \vlen == 256 |
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vsetivli zero, \w, e32, m2, ta, ma |
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.elseif \w <= 32 && \vlen == 256 |
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li t0, \w |
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vsetvli zero, t0, e32, m4, ta, ma |
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.else |
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li t0, \w |
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vsetvli zero, t0, e32, m8, ta, ma |
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.endif |
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.endm |
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.macro POW2_JMP_TABLE id, vlen |
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const jmp_table_\id\vlen |
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.4byte \id\()2\vlen\()f - jmp_table_\id\vlen |
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.4byte \id\()4\vlen\()f - jmp_table_\id\vlen |
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.4byte \id\()8\vlen\()f - jmp_table_\id\vlen |
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.4byte \id\()16\vlen\()f - jmp_table_\id\vlen |
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.4byte \id\()32\vlen\()f - jmp_table_\id\vlen |
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.4byte \id\()64\vlen\()f - jmp_table_\id\vlen |
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.4byte \id\()128\vlen\()f - jmp_table_\id\vlen |
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endconst |
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.endm |
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.macro POW2_J vlen, id, w |
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clz t1, \w |
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neg t1, t1 |
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lla t5, jmp_table_\id\vlen |
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sh2add t1, t1, t5 |
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lw t1, ((__riscv_xlen-2)<<2)(t1) |
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add t1, t1, t5 |
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jr t1 |
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.endm |
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