LXR qemu/tests/tcg/hexagon/hvx

   1/*
   2 *  Copyright(c) 2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
   3 *
   4 *  This program is free software; you can redistribute it and/or modify
   5 *  it under the terms of the GNU General Public License as published by
   6 *  the Free Software Foundation; either version 2 of the License, or
   7 *  (at your option) any later version.
   8 *
   9 *  This program is distributed in the hope that it will be useful,
  10 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 *  GNU General Public License for more details.
  13 *
  14 *  You should have received a copy of the GNU General Public License
  15 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18#include <stdio.h>
  19#include <stdint.h>
  20#include <string.h>
  21#include "hvx_histogram_row.h"
  22
  23const int vector_len = 128;
  24const int width = 275;
  25const int height = 20;
  26const int stride = (width + vector_len - 1) & -vector_len;
  27
  28int err;
  29
  30static uint8_t input[height][stride] __attribute__((aligned(128))) = {
  31#include "hvx_histogram_input.h"
  32};
  33
  34static int result[256] __attribute__((aligned(128)));
  35static int expect[256] __attribute__((aligned(128)));
  36
  37static void check(void)
  38{
  39    for (int i = 0; i < 256; i++) {
  40        int res = result[i];
  41        int exp = expect[i];
  42        if (res != exp) {
  43            printf("ERROR at %3d: 0x%04x != 0x%04x\n",
  44                   i, res, exp);
  45            err++;
  46        }
  47    }
  48}
  49
  50static void ref_histogram(uint8_t *src, int stride, int width, int height,
  51                          int *hist)
  52{
  53    for (int i = 0; i < 256; i++) {
  54        hist[i] = 0;
  55    }
  56
  57    for (int i = 0; i < height; i++) {
  58        for (int j = 0; j < width; j++) {
  59            hist[src[i * stride + j]]++;
  60        }
  61    }
  62}
  63
  64static void hvx_histogram(uint8_t *src, int stride, int width, int height,
  65                          int *hist)
  66{
  67    int n = 8192 / width;
  68
  69    for (int i = 0; i < 256; i++) {
  70        hist[i] = 0;
  71    }
  72
  73    for (int i = 0; i < height; i += n) {
  74        int k = height - i > n ? n : height - i;
  75        hvx_histogram_row(src, stride, width, k, hist);
  76        src += n * stride;
  77    }
  78}
  79
  80int main()
  81{
  82    ref_histogram(&input[0][0], stride, width, height, expect);
  83    hvx_histogram(&input[0][0], stride, width, height, result);
  84    check();
  85
  86    puts(err ? "FAIL" : "PASS");
  87    return err ? 1 : 0;
  88}
  89