Richard Henderson | f4c0f98 | 2013-02-16 12:47:01 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Test 64x64 -> 128 multiply subroutines |
| 3 | * |
| 4 | * This work is licensed under the terms of the GNU LGPL, version 2 or later. |
| 5 | * See the COPYING.LIB file in the top-level directory. |
| 6 | * |
| 7 | */ |
| 8 | |
| 9 | #include <glib.h> |
| 10 | #include <stdint.h> |
| 11 | #include "qemu/host-utils.h" |
| 12 | #include "qemu/osdep.h" |
| 13 | |
| 14 | |
| 15 | typedef struct { |
| 16 | uint64_t a, b; |
| 17 | uint64_t rh, rl; |
| 18 | } Test; |
| 19 | |
| 20 | static const Test test_u_data[] = { |
| 21 | { 1, 1, 0, 1 }, |
| 22 | { 10000, 10000, 0, 100000000 }, |
| 23 | { 0xffffffffffffffffULL, 2, 1, 0xfffffffffffffffeULL }, |
| 24 | { 0xffffffffffffffffULL, 0xffffffffffffffffULL, |
| 25 | 0xfffffffffffffffeULL, 0x0000000000000001ULL }, |
| 26 | { 0x1122334455667788ull, 0x8877665544332211ull, |
| 27 | 0x092228fb777ae38full, 0x0a3e963337c60008ull }, |
| 28 | }; |
| 29 | |
| 30 | static const Test test_s_data[] = { |
| 31 | { 1, 1, 0, 1 }, |
| 32 | { 1, -1, -1, -1 }, |
| 33 | { -10, -10, 0, 100 }, |
| 34 | { 10000, 10000, 0, 100000000 }, |
| 35 | { -1, 2, -1, -2 }, |
| 36 | { 0x1122334455667788ULL, 0x1122334455667788ULL, |
| 37 | 0x01258f60bbc2975cULL, 0x1eace4a3c82fb840ULL }, |
| 38 | }; |
| 39 | |
| 40 | static void test_u(void) |
| 41 | { |
| 42 | int i; |
| 43 | |
| 44 | for (i = 0; i < ARRAY_SIZE(test_u_data); ++i) { |
| 45 | uint64_t rl, rh; |
| 46 | mulu64(&rl, &rh, test_u_data[i].a, test_u_data[i].b); |
| 47 | g_assert_cmpuint(rl, ==, test_u_data[i].rl); |
| 48 | g_assert_cmpuint(rh, ==, test_u_data[i].rh); |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | static void test_s(void) |
| 53 | { |
| 54 | int i; |
| 55 | |
| 56 | for (i = 0; i < ARRAY_SIZE(test_s_data); ++i) { |
| 57 | uint64_t rl, rh; |
| 58 | muls64(&rl, &rh, test_s_data[i].a, test_s_data[i].b); |
| 59 | g_assert_cmpuint(rl, ==, test_s_data[i].rl); |
| 60 | g_assert_cmpint(rh, ==, test_s_data[i].rh); |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | int main(int argc, char **argv) |
| 65 | { |
| 66 | g_test_init(&argc, &argv, NULL); |
| 67 | g_test_add_func("/host-utils/mulu64", test_u); |
| 68 | g_test_add_func("/host-utils/muls64", test_s); |
| 69 | return g_test_run(); |
| 70 | } |