Archipelago » qemu

/*

 * Test 64x64 -> 128 multiply subroutines

 *

 * This work is licensed under the terms of the GNU LGPL, version 2 or later.

 * See the COPYING.LIB file in the top-level directory.

 *

 */

#include <glib.h>

#include <stdint.h>

#include "qemu/host-utils.h"

#include "qemu/osdep.h"

typedef struct {

    uint64_t a, b;

    uint64_t rh, rl;

} Test;

static const Test test_u_data[] = {

    { 1, 1, 0, 1 },

    { 10000, 10000, 0, 100000000 },

    { 0xffffffffffffffffULL, 2, 1, 0xfffffffffffffffeULL },

    { 0xffffffffffffffffULL, 0xffffffffffffffffULL,

      0xfffffffffffffffeULL, 0x0000000000000001ULL },

    { 0x1122334455667788ull, 0x8877665544332211ull,

      0x092228fb777ae38full, 0x0a3e963337c60008ull },

};

static const Test test_s_data[] = {

    { 1, 1, 0, 1 },

    { 1, -1, -1, -1 },

    { -10, -10, 0, 100 },

    { 10000, 10000, 0, 100000000 },

    { -1, 2, -1, -2 },

    { 0x1122334455667788ULL, 0x1122334455667788ULL,

      0x01258f60bbc2975cULL, 0x1eace4a3c82fb840ULL },

};

static void test_u(void)

{

    int i;

    for (i = 0; i < ARRAY_SIZE(test_u_data); ++i) {

        uint64_t rl, rh;

        mulu64(&rl, &rh, test_u_data[i].a, test_u_data[i].b);

        g_assert_cmpuint(rl, ==, test_u_data[i].rl);

        g_assert_cmpuint(rh, ==, test_u_data[i].rh);

    }

}

static void test_s(void)

{

    int i;

    for (i = 0; i < ARRAY_SIZE(test_s_data); ++i) {

        uint64_t rl, rh;

        muls64(&rl, &rh, test_s_data[i].a, test_s_data[i].b);

        g_assert_cmpuint(rl, ==, test_s_data[i].rl);

        g_assert_cmpint(rh, ==, test_s_data[i].rh);

    }

}

int main(int argc, char **argv)

{

    g_test_init(&argc, &argv, NULL);

    g_test_add_func("/host-utils/mulu64", test_u);

    g_test_add_func("/host-utils/muls64", test_s);

    return g_test_run();

}