/*-
 * Copyright (c) 2018 Instituto de Pesquisas Eldorado
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the author nor the names of its contributors may
 *    be used to endorse or promote products derived from this software
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#define FN_NAME                 __memcpy_vsx
#define BLOCK_BITS              6
#define ALIGN_MASK              0xf

/*
 * r5: bytes to copy (multiple of BLOCK_BYTES)
 *
 */
#define FN_COPY_LOOP \
        /* Load CTR with number of blocks */             \
        srdi    %r5, %r5, BLOCK_BITS                    ;\
        mtctr   %r5                                     ;\
        /* Prepare indexes to load and store data */     \
        xor     %r6, %r6, %r6                           ;\
        li      %r9,  16                                ;\
        li      %r10, 32                                ;\
        li      %r11, 48                                ;\
.Lcopy_vsx_loop:                                         \
        lxvd2x  %vs6, %r6,  %r4                         ;\
        lxvd2x  %vs7, %r9,  %r4                         ;\
        lxvd2x  %vs8, %r10, %r4                         ;\
        lxvd2x  %vs9, %r11, %r4                         ;\
        stxvd2x %vs6, %r6,  %r3                         ;\
        stxvd2x %vs7, %r9,  %r3                         ;\
        stxvd2x %vs8, %r10, %r3                         ;\
        stxvd2x %vs9, %r11, %r3                         ;\
                                                         \
        addi    %r3, %r3, BLOCK_BYTES                   ;\
        addi    %r4, %r4, BLOCK_BYTES                   ;\
        bdnz    .Lcopy_vsx_loop                         ;\
                                                         \
        /* Check if there is remaining bytes */          \
        cmpd    %r7, 0                                  ;\
        beq             .Lexit                          ;\

#include "memcpy.S"