/*
 * 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"

#if __riscv_xlen >= 64
func ff_copy64_rvi
        lpad    0
1:
        addi          a4, a4, -1
        ld            t0, (a2)
        ld            t1, 8(a2)
        ld            t2, 16(a2)
        ld            t3, 24(a2)
        ld            t4, 32(a2)
        ld            t5, 40(a2)
        ld            t6, 48(a2)
        ld            a7, 56(a2)
        sd            t0, (a0)
        sd            t1, 8(a0)
        sd            t2, 16(a0)
        sd            t3, 24(a0)
        sd            t4, 32(a0)
        sd            t5, 40(a0)
        sd            t6, 48(a0)
        sd            a7, 56(a0)
        add           a2, a2, a3
        add           a0, a0, a1
        bnez          a4, 1b

        ret
endfunc

func ff_copy32_rvi
        lpad    0
1:
        addi          a4, a4, -1
        ld            t0, (a2)
        ld            t1, 8(a2)
        ld            t2, 16(a2)
        ld            t3, 24(a2)
        sd            t0, (a0)
        sd            t1, 8(a0)
        sd            t2, 16(a0)
        sd            t3, 24(a0)
        add           a2, a2, a3
        add           a0, a0, a1
        bnez          a4, 1b

        ret
endfunc

func ff_copy16_rvi
        lpad    0
1:
        addi          a4, a4, -1
        ld            t0, (a2)
        ld            t1, 8(a2)
        sd            t0, (a0)
        sd            t1, 8(a0)
        add           a2, a2, a3
        add           a0, a0, a1
        bnez          a4, 1b

        ret
endfunc

func ff_copy8_rvi
        lpad    0
1:
        addi          a4, a4, -1
        ld            t0, (a2)
        sd            t0, (a0)
        add           a2, a2, a3
        add           a0, a0, a1
        bnez          a4, 1b

        ret
endfunc
#endif

func ff_copy4_rvi
        lpad    0
1:
        addi          a4, a4, -1
        lw            t0, (a2)
        sw            t0, (a0)
        add           a2, a2, a3
        add           a0, a0, a1
        bnez          a4, 1b

        ret
endfunc