cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

test-bitcnt.c (4189B)

      1/*
      2 * Test bit count routines
      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 "qemu/osdep.h"
     10#include "qemu/host-utils.h"
     11
     12struct bitcnt_test_data {
     13    /* value to count */
     14    union {
     15        uint8_t  w8;
     16        uint16_t w16;
     17        uint32_t w32;
     18        uint64_t w64;
     19    } value;
     20    /* expected result */
     21    int popct;
     22};
     23
     24struct bitcnt_test_data eight_bit_data[] = {
     25    { { .w8 = 0x00 }, .popct=0 },
     26    { { .w8 = 0x01 }, .popct=1 },
     27    { { .w8 = 0x03 }, .popct=2 },
     28    { { .w8 = 0x04 }, .popct=1 },
     29    { { .w8 = 0x0f }, .popct=4 },
     30    { { .w8 = 0x3f }, .popct=6 },
     31    { { .w8 = 0x40 }, .popct=1 },
     32    { { .w8 = 0xf0 }, .popct=4 },
     33    { { .w8 = 0x7f }, .popct=7 },
     34    { { .w8 = 0x80 }, .popct=1 },
     35    { { .w8 = 0xf1 }, .popct=5 },
     36    { { .w8 = 0xfe }, .popct=7 },
     37    { { .w8 = 0xff }, .popct=8 },
     38};
     39
     40static void test_ctpop8(void)
     41{
     42    int i;
     43
     44    for (i = 0; i < ARRAY_SIZE(eight_bit_data); i++) {
     45        struct bitcnt_test_data *d = &eight_bit_data[i];
     46        g_assert(ctpop8(d->value.w8)==d->popct);
     47    }
     48}
     49
     50struct bitcnt_test_data sixteen_bit_data[] = {
     51    { { .w16 = 0x0000 }, .popct=0 },
     52    { { .w16 = 0x0001 }, .popct=1 },
     53    { { .w16 = 0x0003 }, .popct=2 },
     54    { { .w16 = 0x000f }, .popct=4 },
     55    { { .w16 = 0x003f }, .popct=6 },
     56    { { .w16 = 0x00f0 }, .popct=4 },
     57    { { .w16 = 0x0f0f }, .popct=8 },
     58    { { .w16 = 0x1f1f }, .popct=10 },
     59    { { .w16 = 0x4000 }, .popct=1 },
     60    { { .w16 = 0x4001 }, .popct=2 },
     61    { { .w16 = 0x7000 }, .popct=3 },
     62    { { .w16 = 0x7fff }, .popct=15 },
     63};
     64
     65static void test_ctpop16(void)
     66{
     67    int i;
     68
     69    for (i = 0; i < ARRAY_SIZE(sixteen_bit_data); i++) {
     70        struct bitcnt_test_data *d = &sixteen_bit_data[i];
     71        g_assert(ctpop16(d->value.w16)==d->popct);
     72    }
     73}
     74
     75struct bitcnt_test_data thirtytwo_bit_data[] = {
     76    { { .w32 = 0x00000000 }, .popct=0 },
     77    { { .w32 = 0x00000001 }, .popct=1 },
     78    { { .w32 = 0x0000000f }, .popct=4 },
     79    { { .w32 = 0x00000f0f }, .popct=8 },
     80    { { .w32 = 0x00001f1f }, .popct=10 },
     81    { { .w32 = 0x00004001 }, .popct=2 },
     82    { { .w32 = 0x00007000 }, .popct=3 },
     83    { { .w32 = 0x00007fff }, .popct=15 },
     84    { { .w32 = 0x55555555 }, .popct=16 },
     85    { { .w32 = 0xaaaaaaaa }, .popct=16 },
     86    { { .w32 = 0xff000000 }, .popct=8 },
     87    { { .w32 = 0xc0c0c0c0 }, .popct=8 },
     88    { { .w32 = 0x0ffffff0 }, .popct=24 },
     89    { { .w32 = 0x80000000 }, .popct=1 },
     90    { { .w32 = 0xffffffff }, .popct=32 },
     91};
     92
     93static void test_ctpop32(void)
     94{
     95    int i;
     96
     97    for (i = 0; i < ARRAY_SIZE(thirtytwo_bit_data); i++) {
     98        struct bitcnt_test_data *d = &thirtytwo_bit_data[i];
     99        g_assert(ctpop32(d->value.w32)==d->popct);
    100    }
    101}
    102
    103struct bitcnt_test_data sixtyfour_bit_data[] = {
    104    { { .w64 = 0x0000000000000000ULL }, .popct=0 },
    105    { { .w64 = 0x0000000000000001ULL }, .popct=1 },
    106    { { .w64 = 0x000000000000000fULL }, .popct=4 },
    107    { { .w64 = 0x0000000000000f0fULL }, .popct=8 },
    108    { { .w64 = 0x0000000000001f1fULL }, .popct=10 },
    109    { { .w64 = 0x0000000000004001ULL }, .popct=2 },
    110    { { .w64 = 0x0000000000007000ULL }, .popct=3 },
    111    { { .w64 = 0x0000000000007fffULL }, .popct=15 },
    112    { { .w64 = 0x0000005500555555ULL }, .popct=16 },
    113    { { .w64 = 0x00aa0000aaaa00aaULL }, .popct=16 },
    114    { { .w64 = 0x000f000000f00000ULL }, .popct=8 },
    115    { { .w64 = 0x0c0c0000c0c0c0c0ULL }, .popct=12 },
    116    { { .w64 = 0xf00f00f0f0f0f000ULL }, .popct=24 },
    117    { { .w64 = 0x8000000000000000ULL }, .popct=1 },
    118    { { .w64 = 0xf0f0f0f0f0f0f0f0ULL }, .popct=32 },
    119    { { .w64 = 0xffffffffffffffffULL }, .popct=64 },
    120};
    121
    122static void test_ctpop64(void)
    123{
    124    int i;
    125
    126    for (i = 0; i < ARRAY_SIZE(sixtyfour_bit_data); i++) {
    127        struct bitcnt_test_data *d = &sixtyfour_bit_data[i];
    128        g_assert(ctpop64(d->value.w64)==d->popct);
    129    }
    130}
    131
    132int main(int argc, char **argv)
    133{
    134    g_test_init(&argc, &argv, NULL);
    135    g_test_add_func("/bitcnt/ctpop8", test_ctpop8);
    136    g_test_add_func("/bitcnt/ctpop16", test_ctpop16);
    137    g_test_add_func("/bitcnt/ctpop32", test_ctpop32);
    138    g_test_add_func("/bitcnt/ctpop64", test_ctpop64);
    139    return g_test_run();
    140}