예제 #1
0
static void test2(RTTEST hTest)
{
    struct TestMap2 *p2 = (struct TestMap2 *)RTTestGuardedAllocTail(hTest, sizeof(TestMap2));
    p2->idNil  = NIL_TEST2_ID;
    p2->idLast = TEST2_ID_LAST;

    /* Some simple tests first. */
    RT_ZERO(p2->bmChunkId);
    RTTEST_CHECK(hTest, ASMBitFirstSet(&p2->bmChunkId[0], TEST2_ID_LAST + 1) == -1);
    for (uint32_t iBit = 0; iBit <= TEST2_ID_LAST; iBit++)
        RTTEST_CHECK(hTest, !ASMBitTest(&p2->bmChunkId[0], iBit));

    memset(&p2->bmChunkId[0], 0xff, sizeof(p2->bmChunkId));
    RTTEST_CHECK(hTest, ASMBitFirstClear(&p2->bmChunkId[0], TEST2_ID_LAST + 1) == -1);
    for (uint32_t iBit = 0; iBit <= TEST2_ID_LAST; iBit++)
        RTTEST_CHECK(hTest, ASMBitTest(&p2->bmChunkId[0], iBit));

    /* The real test. */
    p2->idChunkPrev = 0;
    RT_ZERO(p2->bmChunkId);
    ASMBitSet(p2->bmChunkId, NIL_TEST2_ID);
    uint32_t cLeft = TEST2_ID_LAST;
    while (cLeft-- > 0)
        test2AllocId(p2);

    RTTEST_CHECK(hTest, ASMBitFirstClear(&p2->bmChunkId[0], TEST2_ID_LAST + 1) == -1);
}
예제 #2
0
RTDECL(int) ASMBitNextSet(const volatile void *pvBitmap, uint32_t cBits, uint32_t iBitPrev)
{
    const volatile uint8_t *pau8Bitmap = (const volatile uint8_t *)pvBitmap;
    int                      iBit = ++iBitPrev & 7;
    if (iBit)
    {
        /*
         * Inspect the byte containing the unaligned bit.
         */
        uint8_t u8 = pau8Bitmap[iBitPrev / 8] >> iBit;
        if (u8)
        {
            iBit = 0;
            while (!(u8 & 1))
            {
                u8 >>= 1;
                iBit++;
            }
            return iBitPrev + iBit;
        }

        /*
         * Skip ahead and see if there is anything left to search.
         */
        iBitPrev |= 7;
        iBitPrev++;
        if (cBits <= iBitPrev)
            return -1;
    }

    /*
     * Byte search, let ASMBitFirstSet do the dirty work.
     */
    iBit = ASMBitFirstSet(&pau8Bitmap[iBitPrev / 8], cBits - iBitPrev);
    if (iBit >= 0)
        iBit += iBitPrev;
    return iBit;
}
예제 #3
0
RTDECL(int) ASMBitNextSet(const volatile void *pvBitmap, uint32_t cBits, uint32_t iBitPrev)
{
    const volatile uint32_t *pau32Bitmap = (const volatile uint32_t *)pvBitmap;
    int                      iBit = ++iBitPrev & 31;
    if (iBit)
    {
        /*
         * Inspect the 32-bit word containing the unaligned bit.
         */
        uint32_t u32 = pau32Bitmap[iBitPrev / 32] >> iBit;
        if (u32)
        {
            iBit = 0;
            while (!(u32 & 1))
            {
                u32 >>= 1;
                iBit++;
            }
            return iBitPrev + iBit;
        }

        /*
         * Skip ahead and see if there is anything left to search.
         */
        iBitPrev |= 31;
        iBitPrev++;
        if (cBits <= (uint32_t)iBitPrev)
            return -1;
    }

    /*
     * 32-bit aligned search, let ASMBitFirstSet do the dirty work.
     */
    iBit = ASMBitFirstSet(&pau32Bitmap[iBitPrev / 32], cBits - iBitPrev);
    if (iBit >= 0)
        iBit += iBitPrev;
    return iBit;
}
예제 #4
0
int main()
{
    /*
     * Init the runtime and stuff.
     */
    RTTEST hTest;
    int rc = RTTestInitAndCreate("tstRTBitOperations", &hTest);
    if (rc)
        return rc;
    RTTestBanner(hTest);

    int i;
    int j;
    int k;

    /*
     * Tests
     */
    struct TestMap
    {
        uint32_t au32[4];
    };
#if 0
    struct TestMap sTest;
    struct TestMap *p = &sTest;
#else
    struct TestMap *p = (struct TestMap *)RTTestGuardedAllocTail(hTest, sizeof(*p));
#endif
#define DUMP()          RTTestPrintf(hTest, RTTESTLVL_INFO, "au32={%08x,%08x,%08x,%08x}", p->au32[0], p->au32[1], p->au32[2], p->au32[3])
#define CHECK(expr)     do { if (!(expr)) { RTTestFailed(hTest, "line %d: %s", __LINE__, #expr); DUMP(); } CHECK_GUARD(s); } while (0)
#define CHECK_BIT(expr,  b1)            do { if (!(expr)) { RTTestFailed(hTest, "line %d, b1=%d: %s", __LINE__, b1, #expr); } CHECK_GUARD(s); } while (0)
#define CHECK_BIT2(expr, b1, b2)        do { if (!(expr)) { RTTestFailed(hTest, "line %d, b1=%d b2=%d: %s", __LINE__, b1, b2, #expr); } CHECK_GUARD(s); } while (0)
#define CHECK_BIT3(expr, b1, b2, b3)    do { if (!(expr)) { RTTestFailed(hTest, "line %d, b1=%d b2=%d b3=%d: %s", __LINE__, b1, b2, b3, #expr); } CHECK_GUARD(s); } while (0)

#define GUARD_MAP(p)    do {  } while (0)
#define CHECK_GUARD(p)  do {  } while (0)
#define MAP_CLEAR(p)    do { RT_ZERO(*(p)); GUARD_MAP(p); } while (0)
#define MAP_SET(p)      do { memset(p, 0xff, sizeof(*(p))); GUARD_MAP(p); } while (0)

    /* self check. */
    MAP_CLEAR(p);
    CHECK_GUARD(p);

    /* bit set */
    MAP_CLEAR(p);
    ASMBitSet(&p->au32[0], 0);
    ASMBitSet(&p->au32[0], 31);
    ASMBitSet(&p->au32[0], 65);
    CHECK(p->au32[0] == 0x80000001U);
    CHECK(p->au32[2] == 0x00000002U);
    CHECK(ASMBitTestAndSet(&p->au32[0], 0)   && p->au32[0] == 0x80000001U);
    CHECK(!ASMBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x80010001U);
    CHECK(ASMBitTestAndSet(&p->au32[0], 16)  && p->au32[0] == 0x80010001U);
    CHECK(!ASMBitTestAndSet(&p->au32[0], 80) && p->au32[2] == 0x00010002U);

    MAP_CLEAR(p);
    ASMAtomicBitSet(&p->au32[0], 0);
    ASMAtomicBitSet(&p->au32[0], 30);
    ASMAtomicBitSet(&p->au32[0], 64);
    CHECK(p->au32[0] == 0x40000001U);
    CHECK(p->au32[2] == 0x00000001U);
    CHECK(ASMAtomicBitTestAndSet(&p->au32[0], 0)   && p->au32[0] == 0x40000001U);
    CHECK(!ASMAtomicBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x40010001U);
    CHECK(ASMAtomicBitTestAndSet(&p->au32[0], 16)  && p->au32[0] == 0x40010001U);
    CHECK(!ASMAtomicBitTestAndSet(&p->au32[0], 80) && p->au32[2] == 0x00010001U);

    /* bit clear */
    MAP_SET(p);
    ASMBitClear(&p->au32[0], 0);
    ASMBitClear(&p->au32[0], 31);
    ASMBitClear(&p->au32[0], 65);
    CHECK(p->au32[0] == ~0x80000001U);
    CHECK(p->au32[2] == ~0x00000002U);
    CHECK(!ASMBitTestAndClear(&p->au32[0], 0)   && p->au32[0] == ~0x80000001U);
    CHECK(ASMBitTestAndClear(&p->au32[0], 16)   && p->au32[0] == ~0x80010001U);
    CHECK(!ASMBitTestAndClear(&p->au32[0], 16)  && p->au32[0] == ~0x80010001U);
    CHECK(ASMBitTestAndClear(&p->au32[0], 80)   && p->au32[2] == ~0x00010002U);

    MAP_SET(p);
    ASMAtomicBitClear(&p->au32[0], 0);
    ASMAtomicBitClear(&p->au32[0], 30);
    ASMAtomicBitClear(&p->au32[0], 64);
    CHECK(p->au32[0] == ~0x40000001U);
    CHECK(p->au32[2] == ~0x00000001U);
    CHECK(!ASMAtomicBitTestAndClear(&p->au32[0], 0)   && p->au32[0] == ~0x40000001U);
    CHECK(ASMAtomicBitTestAndClear(&p->au32[0], 16)   && p->au32[0] == ~0x40010001U);
    CHECK(!ASMAtomicBitTestAndClear(&p->au32[0], 16)  && p->au32[0] == ~0x40010001U);
    CHECK(ASMAtomicBitTestAndClear(&p->au32[0], 80)   && p->au32[2] == ~0x00010001U);

    /* toggle */
    MAP_SET(p);
    ASMBitToggle(&p->au32[0], 0);
    ASMBitToggle(&p->au32[0], 31);
    ASMBitToggle(&p->au32[0], 65);
    ASMBitToggle(&p->au32[0], 47);
    ASMBitToggle(&p->au32[0], 47);
    CHECK(p->au32[0] == ~0x80000001U);
    CHECK(p->au32[2] == ~0x00000002U);
    CHECK(!ASMBitTestAndToggle(&p->au32[0], 0)   && p->au32[0] == ~0x80000000U);
    CHECK(ASMBitTestAndToggle(&p->au32[0], 0)    && p->au32[0] == ~0x80000001U);
    CHECK(ASMBitTestAndToggle(&p->au32[0], 16)   && p->au32[0] == ~0x80010001U);
    CHECK(!ASMBitTestAndToggle(&p->au32[0], 16)  && p->au32[0] == ~0x80000001U);
    CHECK(ASMBitTestAndToggle(&p->au32[0], 80)   && p->au32[2] == ~0x00010002U);

    MAP_SET(p);
    ASMAtomicBitToggle(&p->au32[0], 0);
    ASMAtomicBitToggle(&p->au32[0], 30);
    ASMAtomicBitToggle(&p->au32[0], 64);
    ASMAtomicBitToggle(&p->au32[0], 47);
    ASMAtomicBitToggle(&p->au32[0], 47);
    CHECK(p->au32[0] == ~0x40000001U);
    CHECK(p->au32[2] == ~0x00000001U);
    CHECK(!ASMAtomicBitTestAndToggle(&p->au32[0], 0)   && p->au32[0] == ~0x40000000U);
    CHECK(ASMAtomicBitTestAndToggle(&p->au32[0], 0)    && p->au32[0] == ~0x40000001U);
    CHECK(ASMAtomicBitTestAndToggle(&p->au32[0], 16)   && p->au32[0] == ~0x40010001U);
    CHECK(!ASMAtomicBitTestAndToggle(&p->au32[0], 16)  && p->au32[0] == ~0x40000001U);
    CHECK(ASMAtomicBitTestAndToggle(&p->au32[0], 80)   && p->au32[2] == ~0x00010001U);

    /* test bit. */
    for (i = 0; i < 128; i++)
    {
        MAP_SET(p);
        CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
        ASMBitToggle(&p->au32[0], i);
        CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
        CHECK_BIT(!ASMBitTestAndToggle(&p->au32[0], i), i);
        CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
        CHECK_BIT(ASMBitTestAndToggle(&p->au32[0], i), i);
        CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);

        MAP_SET(p);
        CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
        ASMAtomicBitToggle(&p->au32[0], i);
        CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
        CHECK_BIT(!ASMAtomicBitTestAndToggle(&p->au32[0], i), i);
        CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
        CHECK_BIT(ASMAtomicBitTestAndToggle(&p->au32[0], i), i);
        CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
    }

    /* bit searching */
    MAP_SET(p);
    CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == -1);
    CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);

    ASMBitClear(&p->au32[0], 1);
    CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 1);
    CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);

    MAP_SET(p);
    ASMBitClear(&p->au32[0], 95);
    CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 95);
    CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);

    MAP_SET(p);
    ASMBitClear(&p->au32[0], 127);
    CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 127);
    CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
    CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 0) == 1);
    CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 1) == 2);
    CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 2) == 3);


    MAP_SET(p);
    CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 0) == -1);
    ASMBitClear(&p->au32[0], 32);
    CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 32) == -1);
    ASMBitClear(&p->au32[0], 88);
    CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8,  57) ==  88);

    MAP_SET(p);
    ASMBitClear(&p->au32[0], 31);
    ASMBitClear(&p->au32[0], 57);
    ASMBitClear(&p->au32[0], 88);
    ASMBitClear(&p->au32[0], 101);
    ASMBitClear(&p->au32[0], 126);
    ASMBitClear(&p->au32[0], 127);
    CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 31);
    CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8,  31) ==  57);
    CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8,  57) ==  88);
    CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8,  88) == 101);
    CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 101) == 126);
    CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 126) == 127);
    CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 127) == -1);

    CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 29) == 30);
    CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 30) == 32);

    MAP_CLEAR(p);
    for (i = 1; i < 128; i++)
        CHECK_BIT(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, i - 1) == i, i);
    for (i = 0; i < 128; i++)
    {
        MAP_SET(p);
        ASMBitClear(&p->au32[0], i);
        CHECK_BIT(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == i, i);
        for (j = 0; j < i; j++)
            CHECK_BIT(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, j) == i, i);
        for (j = i; j < 128; j++)
            CHECK_BIT(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, j) == -1, i);
    }

    /* clear range. */
    MAP_SET(p);
    ASMBitClearRange(&p->au32, 0, 128);
    CHECK(!p->au32[0] && !p->au32[1] && !p->au32[2] && !p->au32[3]);
    for (i = 0; i < 128; i++)
    {
        for (j = i + 1; j <= 128; j++)
        {
            MAP_SET(p);
            ASMBitClearRange(&p->au32, i, j);
            for (k = 0; k < i; k++)
                CHECK_BIT3(ASMBitTest(&p->au32[0], k), i, j, k);
            for (k = i; k < j; k++)
                CHECK_BIT3(!ASMBitTest(&p->au32[0], k), i, j, k);
            for (k = j; k < 128; k++)
                CHECK_BIT3(ASMBitTest(&p->au32[0], k), i, j, k);
        }
    }

    /* set range. */
    MAP_CLEAR(p);
    ASMBitSetRange(&p->au32[0], 0, 5);
    ASMBitSetRange(&p->au32[0], 6, 44);
    ASMBitSetRange(&p->au32[0], 64, 65);
    CHECK(p->au32[0] == UINT32_C(0xFFFFFFDF));
    CHECK(p->au32[1] == UINT32_C(0x00000FFF));
    CHECK(p->au32[2] == UINT32_C(0x00000001));

    MAP_CLEAR(p);
    ASMBitSetRange(&p->au32[0], 0, 1);
    ASMBitSetRange(&p->au32[0], 62, 63);
    ASMBitSetRange(&p->au32[0], 63, 64);
    ASMBitSetRange(&p->au32[0], 127, 128);
    CHECK(p->au32[0] == UINT32_C(0x00000001) && p->au32[1] == UINT32_C(0xC0000000));
    CHECK(p->au32[2] == UINT32_C(0x00000000) && p->au32[3] == UINT32_C(0x80000000));

    MAP_CLEAR(p);
    ASMBitSetRange(&p->au32, 0, 128);
    CHECK(!~p->au32[0] && !~p->au32[1] && !~p->au32[2] && !~p->au32[3]);
    for (i = 0; i < 128; i++)
    {
        for (j = i + 1; j <= 128; j++)
        {
            MAP_CLEAR(p);
            ASMBitSetRange(&p->au32, i, j);
            for (k = 0; k < i; k++)
                CHECK_BIT3(!ASMBitTest(&p->au32[0], k), i, j, k);
            for (k = i; k < j; k++)
                CHECK_BIT3(ASMBitTest(&p->au32[0], k), i, j, k);
            for (k = j; k < 128; k++)
                CHECK_BIT3(!ASMBitTest(&p->au32[0], k), i, j, k);
        }
    }

    /* searching for set bits. */
    MAP_CLEAR(p);
    CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == -1);

    ASMBitSet(&p->au32[0], 65);
    CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 65);
    CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 65) == -1);
    for (i = 0; i < 65; i++)
        CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == 65);
    for (i = 65; i < 128; i++)
        CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == -1);

    ASMBitSet(&p->au32[0], 17);
    CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 17);
    CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 17) == 65);
    for (i = 0; i < 16; i++)
        CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == 17);
    for (i = 17; i < 65; i++)
        CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == 65);

    MAP_SET(p);
    for (i = 1; i < 128; i++)
        CHECK_BIT(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i - 1) == i, i);
    for (i = 0; i < 128; i++)
    {
        MAP_CLEAR(p);
        ASMBitSet(&p->au32[0], i);
        CHECK_BIT(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == i, i);
        for (j = 0; j < i; j++)
            CHECK_BIT(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, j) == i, i);
        for (j = i; j < 128; j++)
            CHECK_BIT(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, j) == -1, i);
    }


    CHECK(ASMBitLastSetU32(0) == 0);
    CHECK(ASMBitLastSetU32(1) == 1);
    CHECK(ASMBitLastSetU32(0x80000000) == 32);
    CHECK(ASMBitLastSetU32(0xffffffff) == 32);
    CHECK(ASMBitLastSetU32(RT_BIT(23) | RT_BIT(11)) == 24);
    for (i = 0; i < 32; i++)
        CHECK(ASMBitLastSetU32(1 << i) == (unsigned)i + 1);

    CHECK(ASMBitFirstSetU32(0) == 0);
    CHECK(ASMBitFirstSetU32(1) == 1);
    CHECK(ASMBitFirstSetU32(0x80000000) == 32);
    CHECK(ASMBitFirstSetU32(0xffffffff) == 1);
    CHECK(ASMBitFirstSetU32(RT_BIT(23) | RT_BIT(11)) == 12);
    for (i = 0; i < 32; i++)
        CHECK(ASMBitFirstSetU32(1 << i) == (unsigned)i + 1);

    /*
     * Special tests.
     */
    test2(hTest);

    /*
     * Summary
     */
    return RTTestSummaryAndDestroy(hTest);
}