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  modification, are permitted provided that the following conditions
  are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * 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.
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      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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#include <limits.h>
#include "erasure_code.h"
#include "ec_base.h" /* for GF tables */

#if __x86_64__ || __i386__ || _M_X64 || _M_IX86
void
ec_encode_data_sse(int len, int k, int rows, unsigned char *g_tbls, unsigned char **data,
                   unsigned char **coding)
{

        if (len < 16) {
                ec_encode_data_base(len, k, rows, g_tbls, data, coding);
                return;
        }

        while (rows >= 6) {
                gf_6vect_dot_prod_sse(len, k, g_tbls, data, coding);
                g_tbls += 6 * k * 32;
                coding += 6;
                rows -= 6;
        }
        switch (rows) {
        case 5:
                gf_5vect_dot_prod_sse(len, k, g_tbls, data, coding);
                break;
        case 4:
                gf_4vect_dot_prod_sse(len, k, g_tbls, data, coding);
                break;
        case 3:
                gf_3vect_dot_prod_sse(len, k, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_dot_prod_sse(len, k, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_dot_prod_sse(len, k, g_tbls, data, *coding);
                break;
        case 0:
                break;
        }
}

void
ec_encode_data_avx(int len, int k, int rows, unsigned char *g_tbls, unsigned char **data,
                   unsigned char **coding)
{
        if (len < 16) {
                ec_encode_data_base(len, k, rows, g_tbls, data, coding);
                return;
        }

        while (rows >= 6) {
                gf_6vect_dot_prod_avx(len, k, g_tbls, data, coding);
                g_tbls += 6 * k * 32;
                coding += 6;
                rows -= 6;
        }
        switch (rows) {
        case 5:
                gf_5vect_dot_prod_avx(len, k, g_tbls, data, coding);
                break;
        case 4:
                gf_4vect_dot_prod_avx(len, k, g_tbls, data, coding);
                break;
        case 3:
                gf_3vect_dot_prod_avx(len, k, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_dot_prod_avx(len, k, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_dot_prod_avx(len, k, g_tbls, data, *coding);
                break;
        case 0:
                break;
        }
}

void
ec_encode_data_avx2(int len, int k, int rows, unsigned char *g_tbls, unsigned char **data,
                    unsigned char **coding)
{

        if (len < 32) {
                ec_encode_data_base(len, k, rows, g_tbls, data, coding);
                return;
        }

        while (rows >= 6) {
                gf_6vect_dot_prod_avx2(len, k, g_tbls, data, coding);
                g_tbls += 6 * k * 32;
                coding += 6;
                rows -= 6;
        }
        switch (rows) {
        case 5:
                gf_5vect_dot_prod_avx2(len, k, g_tbls, data, coding);
                break;
        case 4:
                gf_4vect_dot_prod_avx2(len, k, g_tbls, data, coding);
                break;
        case 3:
                gf_3vect_dot_prod_avx2(len, k, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_dot_prod_avx2(len, k, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_dot_prod_avx2(len, k, g_tbls, data, *coding);
                break;
        case 0:
                break;
        }
}

extern int
gf_vect_dot_prod_avx512(int len, int k, unsigned char *g_tbls, unsigned char **data,
                        unsigned char *dest);
extern int
gf_2vect_dot_prod_avx512(int len, int k, unsigned char *g_tbls, unsigned char **data,
                         unsigned char **coding);
extern int
gf_3vect_dot_prod_avx512(int len, int k, unsigned char *g_tbls, unsigned char **data,
                         unsigned char **coding);
extern int
gf_4vect_dot_prod_avx512(int len, int k, unsigned char *g_tbls, unsigned char **data,
                         unsigned char **coding);
extern int
gf_5vect_dot_prod_avx512(int len, int k, unsigned char *g_tbls, unsigned char **data,
                         unsigned char **coding);
extern int
gf_6vect_dot_prod_avx512(int len, int k, unsigned char *g_tbls, unsigned char **data,
                         unsigned char **coding);
extern void
gf_vect_mad_avx512(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                   unsigned char *dest);
extern void
gf_2vect_mad_avx512(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                    unsigned char **dest);
extern void
gf_3vect_mad_avx512(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                    unsigned char **dest);
extern void
gf_4vect_mad_avx512(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                    unsigned char **dest);
extern void
gf_5vect_mad_avx512(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                    unsigned char **dest);
extern void
gf_6vect_mad_avx512(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                    unsigned char **dest);

void
ec_encode_data_avx512(int len, int k, int rows, unsigned char *g_tbls, unsigned char **data,
                      unsigned char **coding)
{

        if (len < 64) {
                ec_encode_data_base(len, k, rows, g_tbls, data, coding);
                return;
        }

        while (rows >= 6) {
                gf_6vect_dot_prod_avx512(len, k, g_tbls, data, coding);
                g_tbls += 6 * k * 32;
                coding += 6;
                rows -= 6;
        }
        switch (rows) {
        case 5:
                gf_5vect_dot_prod_avx512(len, k, g_tbls, data, coding);
                break;
        case 4:
                gf_4vect_dot_prod_avx512(len, k, g_tbls, data, coding);
                break;
        case 3:
                gf_3vect_dot_prod_avx512(len, k, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_dot_prod_avx512(len, k, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_dot_prod_avx512(len, k, g_tbls, data, *coding);
                break;
        case 0:
                break;
        }
}

void
ec_encode_data_update_avx512(int len, int k, int rows, int vec_i, unsigned char *g_tbls,
                             unsigned char *data, unsigned char **coding)
{
        if (len < 64) {
                ec_encode_data_update_base(len, k, rows, vec_i, g_tbls, data, coding);
                return;
        }

        while (rows >= 6) {
                gf_6vect_mad_avx512(len, k, vec_i, g_tbls, data, coding);
                g_tbls += 6 * k * 32;
                coding += 6;
                rows -= 6;
        }
        switch (rows) {
        case 5:
                gf_5vect_mad_avx512(len, k, vec_i, g_tbls, data, coding);
                break;
        case 4:
                gf_4vect_mad_avx512(len, k, vec_i, g_tbls, data, coding);
                break;
        case 3:
                gf_3vect_mad_avx512(len, k, vec_i, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_mad_avx512(len, k, vec_i, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_mad_avx512(len, k, vec_i, g_tbls, data, *coding);
                break;
        case 0:
                break;
        }
}

extern void
gf_vect_dot_prod_avx512_gfni(int len, int k, unsigned char *g_tbls, unsigned char **data,
                             unsigned char *dest);
extern void
gf_2vect_dot_prod_avx512_gfni(int len, int k, unsigned char *g_tbls, unsigned char **data,
                              unsigned char **coding);
extern void
gf_3vect_dot_prod_avx512_gfni(int len, int k, unsigned char *g_tbls, unsigned char **data,
                              unsigned char **coding);
extern void
gf_4vect_dot_prod_avx512_gfni(int len, int k, unsigned char *g_tbls, unsigned char **data,
                              unsigned char **coding);
extern void
gf_5vect_dot_prod_avx512_gfni(int len, int k, unsigned char *g_tbls, unsigned char **data,
                              unsigned char **coding);
extern void
gf_6vect_dot_prod_avx512_gfni(int len, int k, unsigned char *g_tbls, unsigned char **data,
                              unsigned char **coding);

extern void
gf_vect_mad_avx512_gfni(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                        unsigned char *dest);
extern void
gf_2vect_mad_avx512_gfni(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                         unsigned char **dest);
extern void
gf_3vect_mad_avx512_gfni(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                         unsigned char **dest);
extern void
gf_4vect_mad_avx512_gfni(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                         unsigned char **dest);
extern void
gf_5vect_mad_avx512_gfni(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                         unsigned char **dest);
extern void
gf_6vect_mad_avx512_gfni(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                         unsigned char **dest);

extern void
gf_vect_dot_prod_avx2_gfni(int len, int k, unsigned char *g_tbls, unsigned char **data,
                           unsigned char *dest);
extern void
gf_2vect_dot_prod_avx2_gfni(int len, int k, unsigned char *g_tbls, unsigned char **data,
                            unsigned char **coding);
extern void
gf_3vect_dot_prod_avx2_gfni(int len, int k, unsigned char *g_tbls, unsigned char **data,
                            unsigned char **coding);
extern void
gf_vect_mad_avx2_gfni(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                      unsigned char *dest);
extern void
gf_2vect_mad_avx2_gfni(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                       unsigned char **dest);
extern void
gf_3vect_mad_avx2_gfni(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                       unsigned char **dest);
extern void
gf_4vect_mad_avx2_gfni(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                       unsigned char **dest);
extern void
gf_5vect_mad_avx2_gfni(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                       unsigned char **dest);

void
ec_init_tables_gfni(int k, int rows, unsigned char *a, unsigned char *g_tbls)
{
        int i, j;

        uint64_t *g64 = (uint64_t *) g_tbls;

        for (i = 0; i < rows; i++)
                for (j = 0; j < k; j++)
                        *(g64++) = gf_table_gfni[*a++];
}

void
ec_encode_data_avx512_gfni(int len, int k, int rows, unsigned char *g_tbls, unsigned char **data,
                           unsigned char **coding)
{

        while (rows >= 6) {
                gf_6vect_dot_prod_avx512_gfni(len, k, g_tbls, data, coding);
                g_tbls += 6 * k * 8;
                coding += 6;
                rows -= 6;
        }
        switch (rows) {
        case 5:
                gf_5vect_dot_prod_avx512_gfni(len, k, g_tbls, data, coding);
                break;
        case 4:
                gf_4vect_dot_prod_avx512_gfni(len, k, g_tbls, data, coding);
                break;
        case 3:
                gf_3vect_dot_prod_avx512_gfni(len, k, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_dot_prod_avx512_gfni(len, k, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_dot_prod_avx512_gfni(len, k, g_tbls, data, *coding);
                break;
        case 0:
        default:
                break;
        }
}

void
ec_encode_data_avx2_gfni(int len, int k, int rows, unsigned char *g_tbls, unsigned char **data,
                         unsigned char **coding)
{
        while (rows >= 3) {
                gf_3vect_dot_prod_avx2_gfni(len, k, g_tbls, data, coding);
                g_tbls += 3 * k * 8;
                coding += 3;
                rows -= 3;
        }
        switch (rows) {
        case 2:
                gf_2vect_dot_prod_avx2_gfni(len, k, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_dot_prod_avx2_gfni(len, k, g_tbls, data, *coding);
                break;
        case 0:
        default:
                break;
        }
}

void
ec_encode_data_update_avx512_gfni(int len, int k, int rows, int vec_i, unsigned char *g_tbls,
                                  unsigned char *data, unsigned char **coding)
{
        while (rows >= 6) {
                gf_6vect_mad_avx512_gfni(len, k, vec_i, g_tbls, data, coding);
                g_tbls += 6 * k * 8;
                coding += 6;
                rows -= 6;
        }
        switch (rows) {
        case 5:
                gf_5vect_mad_avx512_gfni(len, k, vec_i, g_tbls, data, coding);
                break;
        case 4:
                gf_4vect_mad_avx512_gfni(len, k, vec_i, g_tbls, data, coding);
                break;
        case 3:
                gf_3vect_mad_avx512_gfni(len, k, vec_i, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_mad_avx512_gfni(len, k, vec_i, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_mad_avx512_gfni(len, k, vec_i, g_tbls, data, *coding);
                break;
        case 0:
        default:
                break;
        }
}

void
ec_encode_data_update_avx2_gfni(int len, int k, int rows, int vec_i, unsigned char *g_tbls,
                                unsigned char *data, unsigned char **coding)
{
        while (rows >= 5) {
                gf_5vect_mad_avx2_gfni(len, k, vec_i, g_tbls, data, coding);
                g_tbls += 5 * k * 8;
                coding += 5;
                rows -= 5;
        }
        switch (rows) {
        case 4:
                gf_4vect_mad_avx2_gfni(len, k, vec_i, g_tbls, data, coding);
                break;
        case 3:
                gf_3vect_mad_avx2_gfni(len, k, vec_i, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_mad_avx2_gfni(len, k, vec_i, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_mad_avx2_gfni(len, k, vec_i, g_tbls, data, *coding);
                break;
        case 0:
        default:
                break;
        }
}

#if __WORDSIZE == 64 || _WIN64 || __x86_64__

void
ec_encode_data_update_sse(int len, int k, int rows, int vec_i, unsigned char *g_tbls,
                          unsigned char *data, unsigned char **coding)
{
        if (len < 16) {
                ec_encode_data_update_base(len, k, rows, vec_i, g_tbls, data, coding);
                return;
        }

        while (rows > 6) {
                gf_6vect_mad_sse(len, k, vec_i, g_tbls, data, coding);
                g_tbls += 6 * k * 32;
                coding += 6;
                rows -= 6;
        }
        switch (rows) {
        case 6:
                gf_6vect_mad_sse(len, k, vec_i, g_tbls, data, coding);
                break;
        case 5:
                gf_5vect_mad_sse(len, k, vec_i, g_tbls, data, coding);
                break;
        case 4:
                gf_4vect_mad_sse(len, k, vec_i, g_tbls, data, coding);
                break;
        case 3:
                gf_3vect_mad_sse(len, k, vec_i, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_mad_sse(len, k, vec_i, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_mad_sse(len, k, vec_i, g_tbls, data, *coding);
                break;
        case 0:
                break;
        }
}

void
ec_encode_data_update_avx(int len, int k, int rows, int vec_i, unsigned char *g_tbls,
                          unsigned char *data, unsigned char **coding)
{
        if (len < 16) {
                ec_encode_data_update_base(len, k, rows, vec_i, g_tbls, data, coding);
                return;
        }
        while (rows > 6) {
                gf_6vect_mad_avx(len, k, vec_i, g_tbls, data, coding);
                g_tbls += 6 * k * 32;
                coding += 6;
                rows -= 6;
        }
        switch (rows) {
        case 6:
                gf_6vect_mad_avx(len, k, vec_i, g_tbls, data, coding);
                break;
        case 5:
                gf_5vect_mad_avx(len, k, vec_i, g_tbls, data, coding);
                break;
        case 4:
                gf_4vect_mad_avx(len, k, vec_i, g_tbls, data, coding);
                break;
        case 3:
                gf_3vect_mad_avx(len, k, vec_i, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_mad_avx(len, k, vec_i, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_mad_avx(len, k, vec_i, g_tbls, data, *coding);
                break;
        case 0:
                break;
        }
}

void
ec_encode_data_update_avx2(int len, int k, int rows, int vec_i, unsigned char *g_tbls,
                           unsigned char *data, unsigned char **coding)
{
        if (len < 32) {
                ec_encode_data_update_base(len, k, rows, vec_i, g_tbls, data, coding);
                return;
        }
        while (rows > 6) {
                gf_6vect_mad_avx2(len, k, vec_i, g_tbls, data, coding);
                g_tbls += 6 * k * 32;
                coding += 6;
                rows -= 6;
        }
        switch (rows) {
        case 6:
                gf_6vect_mad_avx2(len, k, vec_i, g_tbls, data, coding);
                break;
        case 5:
                gf_5vect_mad_avx2(len, k, vec_i, g_tbls, data, coding);
                break;
        case 4:
                gf_4vect_mad_avx2(len, k, vec_i, g_tbls, data, coding);
                break;
        case 3:
                gf_3vect_mad_avx2(len, k, vec_i, g_tbls, data, coding);
                break;
        case 2:
                gf_2vect_mad_avx2(len, k, vec_i, g_tbls, data, coding);
                break;
        case 1:
                gf_vect_mad_avx2(len, k, vec_i, g_tbls, data, *coding);
                break;
        case 0:
                break;
        }
}

#endif //__WORDSIZE == 64 || _WIN64 || __x86_64__
#endif //__x86_64__  || __i386__ || _M_X64 || _M_IX86
