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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.
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      notice, this list of conditions and the following disclaimer in
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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
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#include <stdio.h>
#include <stdlib.h>
#include <string.h> // for memset, memcmp
#include "erasure_code.h"
#include "test.h"

#ifndef ALIGN_SIZE
#define ALIGN_SIZE 32
#endif

#ifndef FUNCTION_UNDER_TEST
// By default, test multi-binary version
#define FUNCTION_UNDER_TEST gf_vect_mad
#define REF_FUNCTION        gf_vect_dot_prod
#define VECT                1
#endif

#ifndef TEST_MIN_SIZE
#define TEST_MIN_SIZE 64
#endif

#define str(s)  #s
#define xstr(s) str(s)

#define TEST_LEN      8192
#define TEST_SIZE     (TEST_LEN / 2)
#define TEST_MEM      TEST_SIZE
#define TEST_LOOPS    20000
#define TEST_TYPE_STR ""

#ifndef TEST_SOURCES
#define TEST_SOURCES 16
#endif
#ifndef RANDOMS
#define RANDOMS 20
#endif

#ifdef EC_ALIGNED_ADDR
// Define power of 2 range to check ptr, len alignment
#define PTR_ALIGN_CHK_B 0
#define LEN_ALIGN_CHK_B 0 // 0 for aligned only
#else
// Define power of 2 range to check ptr, len alignment
#define PTR_ALIGN_CHK_B ALIGN_SIZE
#define LEN_ALIGN_CHK_B ALIGN_SIZE // 0 for aligned only
#endif

#define str(s)  #s
#define xstr(s) str(s)

typedef unsigned char u8;

#if (VECT == 1)
#define LAST_ARG *dest
#else
#define LAST_ARG **dest
#endif

extern void
FUNCTION_UNDER_TEST(int len, int vec, int vec_i, unsigned char *gftbls, unsigned char *src,
                    unsigned char LAST_ARG);
extern void
REF_FUNCTION(int len, int vlen, unsigned char *gftbls, unsigned char **src, unsigned char LAST_ARG);

void
dump(unsigned char *buf, int len)
{
        int i;
        for (i = 0; i < len;) {
                printf(" %2x", 0xff & buf[i++]);
                if (i % 32 == 0)
                        printf("\n");
        }
        printf("\n");
}

void
dump_matrix(unsigned char **s, int k, int m)
{
        int i, j;
        for (i = 0; i < k; i++) {
                for (j = 0; j < m; j++) {
                        printf(" %2x", s[i][j]);
                }
                printf("\n");
        }
        printf("\n");
}

void
dump_u8xu8(unsigned char *s, int k, int m)
{
        int i, j;
        for (i = 0; i < k; i++) {
                for (j = 0; j < m; j++) {
                        printf(" %2x", 0xff & s[j + (i * m)]);
                }
                printf("\n");
        }
        printf("\n");
}

int
main(int argc, char *argv[])
{
        int i, j, rtest, srcs;
        void *buf;
        u8 gf[6][TEST_SOURCES];
        u8 *g_tbls;
        u8 *dest_ref[VECT];
        u8 *dest_ptrs[VECT], *buffs[TEST_SOURCES];
        int vector = VECT;

        int align, size;
        unsigned char *efence_buffs[TEST_SOURCES];
        unsigned int offset;
        u8 *ubuffs[TEST_SOURCES];
        u8 *udest_ptrs[VECT];
        printf("test" xstr(FUNCTION_UNDER_TEST) ": %dx%d ", TEST_SOURCES, TEST_LEN);

        // Allocate the arrays
        for (i = 0; i < TEST_SOURCES; i++) {
                if (posix_memalign(&buf, 64, TEST_LEN)) {
                        printf("alloc error: Fail");
                        return -1;
                }
                buffs[i] = buf;
        }

        if (posix_memalign(&buf, 16, 2 * (vector * TEST_SOURCES * 32))) {
                printf("alloc error: Fail");
                return -1;
        }
        g_tbls = buf;

        for (i = 0; i < vector; i++) {
                if (posix_memalign(&buf, 64, TEST_LEN)) {
                        printf("alloc error: Fail");
                        return -1;
                }
                dest_ptrs[i] = buf;
                memset(dest_ptrs[i], 0, TEST_LEN);
        }

        for (i = 0; i < vector; i++) {
                if (posix_memalign(&buf, 64, TEST_LEN)) {
                        printf("alloc error: Fail");
                        return -1;
                }
                dest_ref[i] = buf;
                memset(dest_ref[i], 0, TEST_LEN);
        }

        // Test of all zeros
        for (i = 0; i < TEST_SOURCES; i++)
                memset(buffs[i], 0, TEST_LEN);

        switch (vector) {
        case 6:
                memset(gf[5], 0xe6, TEST_SOURCES);
        case 5:
                memset(gf[4], 4, TEST_SOURCES);
        case 4:
                memset(gf[3], 9, TEST_SOURCES);
        case 3:
                memset(gf[2], 7, TEST_SOURCES);
        case 2:
                memset(gf[1], 1, TEST_SOURCES);
        case 1:
                memset(gf[0], 2, TEST_SOURCES);
                break;
        default:
                return -1;
        }

        for (i = 0; i < TEST_SOURCES; i++)
                for (j = 0; j < TEST_LEN; j++)
                        buffs[i][j] = rand();

        for (i = 0; i < vector; i++)
                for (j = 0; j < TEST_SOURCES; j++) {
                        gf[i][j] = rand();
                        gf_vect_mul_init(gf[i][j], &g_tbls[i * (32 * TEST_SOURCES) + j * 32]);
                }

        for (i = 0; i < vector; i++)
                gf_vect_dot_prod_base(TEST_LEN, TEST_SOURCES, &g_tbls[i * 32 * TEST_SOURCES], buffs,
                                      dest_ref[i]);

        for (i = 0; i < vector; i++)
                memset(dest_ptrs[i], 0, TEST_LEN);
        for (i = 0; i < TEST_SOURCES; i++) {
#if (VECT == 1)
                FUNCTION_UNDER_TEST(TEST_LEN, TEST_SOURCES, i, g_tbls, buffs[i], *dest_ptrs);
#else
                FUNCTION_UNDER_TEST(TEST_LEN, TEST_SOURCES, i, g_tbls, buffs[i], dest_ptrs);
#endif
        }
        for (i = 0; i < vector; i++) {
                if (0 != memcmp(dest_ref[i], dest_ptrs[i], TEST_LEN)) {
                        printf("Fail zero " xstr(FUNCTION_UNDER_TEST) " test%d\n", i);
                        dump_matrix(buffs, vector, TEST_SOURCES);
                        printf("dprod_base:");
                        dump(dest_ref[i], 25);
                        printf("dprod_dut:");
                        dump(dest_ptrs[i], 25);
                        return -1;
                }
        }

#if (VECT == 1)
        REF_FUNCTION(TEST_LEN, TEST_SOURCES, g_tbls, buffs, *dest_ref);
#else
        REF_FUNCTION(TEST_LEN, TEST_SOURCES, g_tbls, buffs, dest_ref);
#endif
        for (i = 0; i < vector; i++) {
                if (0 != memcmp(dest_ref[i], dest_ptrs[i], TEST_LEN)) {
                        printf("Fail zero " xstr(FUNCTION_UNDER_TEST) " test%d\n", i);
                        dump_matrix(buffs, vector, TEST_SOURCES);
                        printf("dprod_base:");
                        dump(dest_ref[i], 25);
                        printf("dprod_dut:");
                        dump(dest_ptrs[i], 25);
                        return -1;
                }
        }

#ifdef TEST_VERBOSE
        putchar('.');
#endif

        // Rand data test

        for (rtest = 0; rtest < RANDOMS; rtest++) {
                for (i = 0; i < TEST_SOURCES; i++)
                        for (j = 0; j < TEST_LEN; j++)
                                buffs[i][j] = rand();

                for (i = 0; i < vector; i++)
                        for (j = 0; j < TEST_SOURCES; j++) {
                                gf[i][j] = rand();
                                gf_vect_mul_init(gf[i][j],
                                                 &g_tbls[i * (32 * TEST_SOURCES) + j * 32]);
                        }

                for (i = 0; i < vector; i++)
                        gf_vect_dot_prod_base(TEST_LEN, TEST_SOURCES,
                                              &g_tbls[i * 32 * TEST_SOURCES], buffs, dest_ref[i]);

                for (i = 0; i < vector; i++)
                        memset(dest_ptrs[i], 0, TEST_LEN);
                for (i = 0; i < TEST_SOURCES; i++) {
#if (VECT == 1)
                        FUNCTION_UNDER_TEST(TEST_LEN, TEST_SOURCES, i, g_tbls, buffs[i],
                                            *dest_ptrs);
#else
                        FUNCTION_UNDER_TEST(TEST_LEN, TEST_SOURCES, i, g_tbls, buffs[i], dest_ptrs);
#endif
                }
                for (i = 0; i < vector; i++) {
                        if (0 != memcmp(dest_ref[i], dest_ptrs[i], TEST_LEN)) {
                                printf("Fail rand " xstr(FUNCTION_UNDER_TEST) " test%d %d\n", i,
                                       rtest);
                                dump_matrix(buffs, vector, TEST_SOURCES);
                                printf("dprod_base:");
                                dump(dest_ref[i], 25);
                                printf("dprod_dut:");
                                dump(dest_ptrs[i], 25);
                                return -1;
                        }
                }

#ifdef TEST_VERBOSE
                putchar('.');
#endif
        }

        // Rand data test with varied parameters
        for (rtest = 0; rtest < RANDOMS; rtest++) {
                for (srcs = TEST_SOURCES; srcs > 0; srcs--) {
                        for (i = 0; i < srcs; i++)
                                for (j = 0; j < TEST_LEN; j++)
                                        buffs[i][j] = rand();

                        for (i = 0; i < vector; i++)
                                for (j = 0; j < srcs; j++) {
                                        gf[i][j] = rand();
                                        gf_vect_mul_init(gf[i][j],
                                                         &g_tbls[i * (32 * srcs) + j * 32]);
                                }

                        for (i = 0; i < vector; i++)
                                gf_vect_dot_prod_base(TEST_LEN, srcs, &g_tbls[i * 32 * srcs], buffs,
                                                      dest_ref[i]);

                        for (i = 0; i < vector; i++)
                                memset(dest_ptrs[i], 0, TEST_LEN);
                        for (i = 0; i < srcs; i++) {
#if (VECT == 1)
                                FUNCTION_UNDER_TEST(TEST_LEN, srcs, i, g_tbls, buffs[i],
                                                    *dest_ptrs);
#else
                                FUNCTION_UNDER_TEST(TEST_LEN, srcs, i, g_tbls, buffs[i], dest_ptrs);
#endif
                        }
                        for (i = 0; i < vector; i++) {
                                if (0 != memcmp(dest_ref[i], dest_ptrs[i], TEST_LEN)) {
                                        printf("Fail rand " xstr(
                                                       FUNCTION_UNDER_TEST) " test%d srcs=%d\n",
                                               i, srcs);
                                        dump_matrix(buffs, vector, TEST_SOURCES);
                                        printf("dprod_base:");
                                        dump(dest_ref[i], 25);
                                        printf("dprod_dut:");
                                        dump(dest_ptrs[i], 25);
                                        return -1;
                                }
                        }

#ifdef TEST_VERBOSE
                        putchar('.');
#endif
                }
        }

        // Run tests at end of buffer for Electric Fence
        align = (LEN_ALIGN_CHK_B != 0) ? 1 : ALIGN_SIZE;
        for (size = TEST_MIN_SIZE; size <= TEST_SIZE; size += align) {
                for (i = 0; i < TEST_SOURCES; i++)
                        for (j = 0; j < TEST_LEN; j++)
                                buffs[i][j] = rand();

                for (i = 0; i < TEST_SOURCES; i++) // Line up TEST_SIZE from end
                        efence_buffs[i] = buffs[i] + TEST_LEN - size;

                for (i = 0; i < vector; i++)
                        for (j = 0; j < TEST_SOURCES; j++) {
                                gf[i][j] = rand();
                                gf_vect_mul_init(gf[i][j],
                                                 &g_tbls[i * (32 * TEST_SOURCES) + j * 32]);
                        }

                for (i = 0; i < vector; i++)
                        gf_vect_dot_prod_base(size, TEST_SOURCES, &g_tbls[i * 32 * TEST_SOURCES],
                                              efence_buffs, dest_ref[i]);

                for (i = 0; i < vector; i++)
                        memset(dest_ptrs[i], 0, size);
                for (i = 0; i < TEST_SOURCES; i++) {
#if (VECT == 1)
                        FUNCTION_UNDER_TEST(size, TEST_SOURCES, i, g_tbls, efence_buffs[i],
                                            *dest_ptrs);
#else
                        FUNCTION_UNDER_TEST(size, TEST_SOURCES, i, g_tbls, efence_buffs[i],
                                            dest_ptrs);
#endif
                }
                for (i = 0; i < vector; i++) {
                        if (0 != memcmp(dest_ref[i], dest_ptrs[i], size)) {
                                printf("Fail rand " xstr(FUNCTION_UNDER_TEST) " test%d size=%d\n",
                                       i, size);
                                dump_matrix(buffs, vector, TEST_SOURCES);
                                printf("dprod_base:");
                                dump(dest_ref[i], TEST_MIN_SIZE + align);
                                printf("dprod_dut:");
                                dump(dest_ptrs[i], TEST_MIN_SIZE + align);
                                return -1;
                        }
                }

#ifdef TEST_VERBOSE
                putchar('.');
#endif
        }

        // Test rand ptr alignment if available

        for (rtest = 0; rtest < RANDOMS; rtest++) {
                size = (TEST_LEN - PTR_ALIGN_CHK_B) & ~(TEST_MIN_SIZE - 1);
                srcs = rand() % TEST_SOURCES;
                if (srcs == 0)
                        continue;

                offset = (PTR_ALIGN_CHK_B != 0) ? 1 : PTR_ALIGN_CHK_B;
                // Add random offsets
                for (i = 0; i < srcs; i++)
                        ubuffs[i] = buffs[i] + (rand() & (PTR_ALIGN_CHK_B - offset));

                for (i = 0; i < vector; i++) {
                        udest_ptrs[i] = dest_ptrs[i] + (rand() & (PTR_ALIGN_CHK_B - offset));
                        memset(dest_ptrs[i], 0, TEST_LEN); // zero pad to check write-over
                }

                for (i = 0; i < srcs; i++)
                        for (j = 0; j < size; j++)
                                ubuffs[i][j] = rand();

                for (i = 0; i < vector; i++)
                        for (j = 0; j < srcs; j++) {
                                gf[i][j] = rand();
                                gf_vect_mul_init(gf[i][j], &g_tbls[i * (32 * srcs) + j * 32]);
                        }

                for (i = 0; i < vector; i++)
                        gf_vect_dot_prod_base(size, srcs, &g_tbls[i * 32 * srcs], ubuffs,
                                              dest_ref[i]);

                for (i = 0; i < srcs; i++) {
#if (VECT == 1)
                        FUNCTION_UNDER_TEST(size, srcs, i, g_tbls, ubuffs[i], *udest_ptrs);
#else
                        FUNCTION_UNDER_TEST(size, srcs, i, g_tbls, ubuffs[i], udest_ptrs);
#endif
                }
                for (i = 0; i < vector; i++) {
                        if (0 != memcmp(dest_ref[i], udest_ptrs[i], size)) {
                                printf("Fail rand " xstr(
                                               FUNCTION_UNDER_TEST) " test%d ualign srcs=%d\n",
                                       i, srcs);
                                dump_matrix(buffs, vector, TEST_SOURCES);
                                printf("dprod_base:");
                                dump(dest_ref[i], 25);
                                printf("dprod_dut:");
                                dump(udest_ptrs[i], 25);
                                return -1;
                        }
                }

                // Confirm that padding around dests is unchanged
                memset(dest_ref[0], 0, PTR_ALIGN_CHK_B); // Make reference zero buff

                for (i = 0; i < vector; i++) {
                        offset = udest_ptrs[i] - dest_ptrs[i];
                        if (memcmp(dest_ptrs[i], dest_ref[0], offset)) {
                                printf("Fail rand ualign pad1 start\n");
                                return -1;
                        }
                        if (memcmp(dest_ptrs[i] + offset + size, dest_ref[0],
                                   PTR_ALIGN_CHK_B - offset)) {
                                printf("Fail rand ualign pad1 end\n");
                                return -1;
                        }
                }

#ifdef TEST_VERBOSE
                putchar('.');
#endif
        }

        // Test all size alignment
        align = (LEN_ALIGN_CHK_B != 0) ? 1 : ALIGN_SIZE;

        for (size = TEST_LEN; size >= TEST_MIN_SIZE; size -= align) {
                for (i = 0; i < TEST_SOURCES; i++)
                        for (j = 0; j < size; j++)
                                buffs[i][j] = rand();

                for (i = 0; i < vector; i++) {
                        for (j = 0; j < TEST_SOURCES; j++) {
                                gf[i][j] = rand();
                                gf_vect_mul_init(gf[i][j],
                                                 &g_tbls[i * (32 * TEST_SOURCES) + j * 32]);
                        }
                        memset(dest_ptrs[i], 0, TEST_LEN); // zero pad to check write-over
                }

                for (i = 0; i < vector; i++)
                        gf_vect_dot_prod_base(size, TEST_SOURCES, &g_tbls[i * 32 * TEST_SOURCES],
                                              buffs, dest_ref[i]);

                for (i = 0; i < TEST_SOURCES; i++) {
#if (VECT == 1)
                        FUNCTION_UNDER_TEST(size, TEST_SOURCES, i, g_tbls, buffs[i], *dest_ptrs);
#else
                        FUNCTION_UNDER_TEST(size, TEST_SOURCES, i, g_tbls, buffs[i], dest_ptrs);
#endif
                }
                for (i = 0; i < vector; i++) {
                        if (0 != memcmp(dest_ref[i], dest_ptrs[i], size)) {
                                printf("Fail rand " xstr(
                                               FUNCTION_UNDER_TEST) " test%d ualign len=%d\n",
                                       i, size);
                                dump_matrix(buffs, vector, TEST_SOURCES);
                                printf("dprod_base:");
                                dump(dest_ref[i], 25);
                                printf("dprod_dut:");
                                dump(dest_ptrs[i], 25);
                                return -1;
                        }
                }

#ifdef TEST_VERBOSE
                putchar('.');
#endif
        }

        printf("Pass\n");

        // Free allocated memory
        for (i = 0; i < TEST_SOURCES; i++) {
                aligned_free(buffs[i]);
        }
        aligned_free(g_tbls);
        for (i = 0; i < vector; i++) {
                aligned_free(dest_ptrs[i]);
                aligned_free(dest_ref[i]);
        }

        return 0;
}
