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/*
* Copyright (c) 2024 Institue of Software Chinese Academy of Sciences (ISCAS).
*
* 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 "libavutil/riscv/asm.S"
.macro vsetvlstatic8 w, vlen
.if \w == 2 && \vlen == 128
vsetivli zero, \w, e8, mf8, ta, ma
.elseif \w <= 4 && \vlen == 128
vsetivli zero, \w, e8, mf4, ta, ma
.elseif \w <= 8 && \vlen == 128
vsetivli zero, \w, e8, mf2, ta, ma
.elseif \w <= 16 && \vlen == 128
vsetivli zero, \w, e8, m1, ta, ma
.elseif \w <= 32 && \vlen == 128
li t0, \w
vsetvli zero, t0, e8, m2, ta, ma
.elseif \w <= 4 && \vlen == 256
vsetivli zero, \w, e8, mf8, ta, ma
.elseif \w <= 8 && \vlen == 256
vsetivli zero, \w, e8, mf4, ta, ma
.elseif \w <= 16 && \vlen == 256
vsetivli zero, \w, e8, mf2, ta, ma
.elseif \w <= 32 && \vlen == 256
li t0, \w
vsetvli zero, t0, e8, m1, ta, ma
.elseif \w <= 64 && \vlen == 256
li t0, \w
vsetvli zero, t0, e8, m2, ta, ma
.else
li t0, \w
vsetvli zero, t0, e8, m4, ta, ma
.endif
.endm
.macro vsetvlstatic16 w, vlen
.if \w == 2 && \vlen == 128
vsetivli zero, \w, e16, mf4, ta, ma
.elseif \w <= 4 && \vlen == 128
vsetivli zero, \w, e16, mf2, ta, ma
.elseif \w <= 8 && \vlen == 128
vsetivli zero, \w, e16, m1, ta, ma
.elseif \w <= 16 && \vlen == 128
vsetivli zero, \w, e16, m2, ta, ma
.elseif \w <= 32 && \vlen == 128
li t0, \w
vsetvli zero, t0, e16, m4, ta, ma
.elseif \w <= 4 && \vlen == 256
vsetivli zero, \w, e16, mf4, ta, ma
.elseif \w <= 8 && \vlen == 256
vsetivli zero, \w, e16, mf2, ta, ma
.elseif \w <= 16 && \vlen == 256
vsetivli zero, \w, e16, m1, ta, ma
.elseif \w <= 32 && \vlen == 256
li t0, \w
vsetvli zero, t0, e16, m2, ta, ma
.elseif \w <= 64 && \vlen == 256
li t0, \w
vsetvli zero, t0, e16, m4, ta, ma
.else
li t0, \w
vsetvli zero, t0, e16, m8, ta, ma
.endif
.endm
.macro vsetvlstatic32 w, vlen
.if \w == 2
vsetivli zero, \w, e32, mf2, ta, ma
.elseif \w <= 4 && \vlen == 128
vsetivli zero, \w, e32, m1, ta, ma
.elseif \w <= 8 && \vlen == 128
vsetivli zero, \w, e32, m2, ta, ma
.elseif \w <= 16 && \vlen == 128
vsetivli zero, \w, e32, m4, ta, ma
.elseif \w <= 4 && \vlen == 256
vsetivli zero, \w, e32, mf2, ta, ma
.elseif \w <= 8 && \vlen == 256
vsetivli zero, \w, e32, m1, ta, ma
.elseif \w <= 16 && \vlen == 256
vsetivli zero, \w, e32, m2, ta, ma
.elseif \w <= 32 && \vlen == 256
li t0, \w
vsetvli zero, t0, e32, m4, ta, ma
.else
li t0, \w
vsetvli zero, t0, e32, m8, ta, ma
.endif
.endm
.macro POW2_JMP_TABLE id, vlen
const jmp_table_\id\vlen
.4byte \id\()2\vlen\()f - jmp_table_\id\vlen
.4byte \id\()4\vlen\()f - jmp_table_\id\vlen
.4byte \id\()8\vlen\()f - jmp_table_\id\vlen
.4byte \id\()16\vlen\()f - jmp_table_\id\vlen
.4byte \id\()32\vlen\()f - jmp_table_\id\vlen
.4byte \id\()64\vlen\()f - jmp_table_\id\vlen
.4byte \id\()128\vlen\()f - jmp_table_\id\vlen
endconst
.endm
.macro POW2_J vlen, id, w
clz t1, \w
neg t1, t1
lla t5, jmp_table_\id\vlen
sh2add t1, t1, t5
lw t1, ((__riscv_xlen-2)<<2)(t1)
add t1, t1, t5
jr t1
.endm
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