| 1 | /* $Id: tstBitOperations.cpp 18365 2009-03-27 02:03:40Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT Testcase - Inlined Bit Operations.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.alldomusa.eu.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | *
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| 26 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 28 | * additional information or have any questions.
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| 29 | */
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| 30 |
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| 31 |
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| 32 | /*******************************************************************************
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| 33 | * Header Files *
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| 34 | *******************************************************************************/
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| 35 | #include <iprt/asm.h>
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| 36 | #include <iprt/test.h>
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| 37 | #include <iprt/stream.h>
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| 38 | #include <iprt/string.h>
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| 39 | #include <iprt/test.h>
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| 40 | #include <iprt/initterm.h>
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| 41 |
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| 42 |
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| 43 | int main()
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| 44 | {
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| 45 | /*
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| 46 | * Init the runtime and stuff.
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| 47 | */
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| 48 | RTTEST hTest;
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| 49 | if ( RT_FAILURE(RTR3Init())
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| 50 | || RT_FAILURE(RTTestCreate("tstBitOperations", &hTest)))
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| 51 | {
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| 52 | RTPrintf("tstBitOperation: fatal initialization error\n");
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| 53 | return 1;
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| 54 | }
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| 55 | RTTestBanner(hTest);
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| 56 |
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| 57 | int rcRet = 0;
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| 58 | int i;
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| 59 | int j;
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| 60 | int k;
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| 61 |
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| 62 | /*
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| 63 | * Tests
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| 64 | */
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| 65 | struct TestMap
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| 66 | {
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| 67 | uint32_t au32[4];
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| 68 | };
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| 69 | #if 0
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| 70 | struct TestMap sTest;
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| 71 | struct TestMap *p = &sTest;
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| 72 | #else
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| 73 | struct TestMap *p = (struct TestMap *)RTTestGuardedAllocTail(hTest, sizeof(*p));
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| 74 | #endif
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| 75 | #define DUMP() RTTestPrintf(hTest, "au32={%08x,%08x,%08x,%08x}", p->au32[0], p->au32[1], p->au32[2], p->au32[3])
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| 76 | #define CHECK(expr) do { if (!(expr)) { RTTestFailed(hTest, "line %d: %s", __LINE__, #expr); DUMP(); } CHECK_GUARD(s); } while (0)
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| 77 | #define CHECK_BIT(expr, b1) do { if (!(expr)) { RTTestFailed(hTest, "line %d, b1=%d: %s", __LINE__, b1, #expr); } CHECK_GUARD(s); } while (0)
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| 78 | #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)
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| 79 | #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)
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| 80 |
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| 81 | #define GUARD_MAP(p) do { } while (0)
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| 82 | #define CHECK_GUARD(p) do { } while (0)
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| 83 | #define MAP_CLEAR(p) do { memset(p, 0, sizeof(*(p))); GUARD_MAP(p); } while (0)
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| 84 | #define MAP_SET(p) do { memset(p, 0xff, sizeof(*(p))); GUARD_MAP(p); } while (0)
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| 85 |
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| 86 | /* self check. */
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| 87 | MAP_CLEAR(p);
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| 88 | CHECK_GUARD(p);
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| 89 |
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| 90 | /* set */
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| 91 | MAP_CLEAR(p);
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| 92 | ASMBitSet(&p->au32[0], 0);
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| 93 | ASMBitSet(&p->au32[0], 31);
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| 94 | ASMBitSet(&p->au32[0], 65);
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| 95 | CHECK(p->au32[0] == 0x80000001U);
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| 96 | CHECK(p->au32[2] == 0x00000002U);
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| 97 | CHECK(ASMBitTestAndSet(&p->au32[0], 0) && p->au32[0] == 0x80000001U);
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| 98 | CHECK(!ASMBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x80010001U);
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| 99 | CHECK(ASMBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x80010001U);
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| 100 | CHECK(!ASMBitTestAndSet(&p->au32[0], 80) && p->au32[2] == 0x00010002U);
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| 101 |
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| 102 | MAP_CLEAR(p);
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| 103 | ASMAtomicBitSet(&p->au32[0], 0);
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| 104 | ASMAtomicBitSet(&p->au32[0], 30);
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| 105 | ASMAtomicBitSet(&p->au32[0], 64);
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| 106 | CHECK(p->au32[0] == 0x40000001U);
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| 107 | CHECK(p->au32[2] == 0x00000001U);
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| 108 | CHECK(ASMAtomicBitTestAndSet(&p->au32[0], 0) && p->au32[0] == 0x40000001U);
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| 109 | CHECK(!ASMAtomicBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x40010001U);
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| 110 | CHECK(ASMAtomicBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x40010001U);
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| 111 | CHECK(!ASMAtomicBitTestAndSet(&p->au32[0], 80) && p->au32[2] == 0x00010001U);
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| 112 |
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| 113 | /* clear */
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| 114 | MAP_SET(p);
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| 115 | ASMBitClear(&p->au32[0], 0);
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| 116 | ASMBitClear(&p->au32[0], 31);
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| 117 | ASMBitClear(&p->au32[0], 65);
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| 118 | CHECK(p->au32[0] == ~0x80000001U);
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| 119 | CHECK(p->au32[2] == ~0x00000002U);
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| 120 | CHECK(!ASMBitTestAndClear(&p->au32[0], 0) && p->au32[0] == ~0x80000001U);
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| 121 | CHECK(ASMBitTestAndClear(&p->au32[0], 16) && p->au32[0] == ~0x80010001U);
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| 122 | CHECK(!ASMBitTestAndClear(&p->au32[0], 16) && p->au32[0] == ~0x80010001U);
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| 123 | CHECK(ASMBitTestAndClear(&p->au32[0], 80) && p->au32[2] == ~0x00010002U);
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| 124 |
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| 125 | MAP_SET(p);
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| 126 | ASMAtomicBitClear(&p->au32[0], 0);
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| 127 | ASMAtomicBitClear(&p->au32[0], 30);
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| 128 | ASMAtomicBitClear(&p->au32[0], 64);
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| 129 | CHECK(p->au32[0] == ~0x40000001U);
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| 130 | CHECK(p->au32[2] == ~0x00000001U);
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| 131 | CHECK(!ASMAtomicBitTestAndClear(&p->au32[0], 0) && p->au32[0] == ~0x40000001U);
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| 132 | CHECK(ASMAtomicBitTestAndClear(&p->au32[0], 16) && p->au32[0] == ~0x40010001U);
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| 133 | CHECK(!ASMAtomicBitTestAndClear(&p->au32[0], 16) && p->au32[0] == ~0x40010001U);
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| 134 | CHECK(ASMAtomicBitTestAndClear(&p->au32[0], 80) && p->au32[2] == ~0x00010001U);
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| 135 |
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| 136 | /* toggle */
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| 137 | MAP_SET(p);
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| 138 | ASMBitToggle(&p->au32[0], 0);
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| 139 | ASMBitToggle(&p->au32[0], 31);
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| 140 | ASMBitToggle(&p->au32[0], 65);
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| 141 | ASMBitToggle(&p->au32[0], 47);
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| 142 | ASMBitToggle(&p->au32[0], 47);
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| 143 | CHECK(p->au32[0] == ~0x80000001U);
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| 144 | CHECK(p->au32[2] == ~0x00000002U);
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| 145 | CHECK(!ASMBitTestAndToggle(&p->au32[0], 0) && p->au32[0] == ~0x80000000U);
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| 146 | CHECK(ASMBitTestAndToggle(&p->au32[0], 0) && p->au32[0] == ~0x80000001U);
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| 147 | CHECK(ASMBitTestAndToggle(&p->au32[0], 16) && p->au32[0] == ~0x80010001U);
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| 148 | CHECK(!ASMBitTestAndToggle(&p->au32[0], 16) && p->au32[0] == ~0x80000001U);
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| 149 | CHECK(ASMBitTestAndToggle(&p->au32[0], 80) && p->au32[2] == ~0x00010002U);
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| 150 |
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| 151 | MAP_SET(p);
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| 152 | ASMAtomicBitToggle(&p->au32[0], 0);
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| 153 | ASMAtomicBitToggle(&p->au32[0], 30);
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| 154 | ASMAtomicBitToggle(&p->au32[0], 64);
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| 155 | ASMAtomicBitToggle(&p->au32[0], 47);
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| 156 | ASMAtomicBitToggle(&p->au32[0], 47);
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| 157 | CHECK(p->au32[0] == ~0x40000001U);
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| 158 | CHECK(p->au32[2] == ~0x00000001U);
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| 159 | CHECK(!ASMAtomicBitTestAndToggle(&p->au32[0], 0) && p->au32[0] == ~0x40000000U);
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| 160 | CHECK(ASMAtomicBitTestAndToggle(&p->au32[0], 0) && p->au32[0] == ~0x40000001U);
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| 161 | CHECK(ASMAtomicBitTestAndToggle(&p->au32[0], 16) && p->au32[0] == ~0x40010001U);
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| 162 | CHECK(!ASMAtomicBitTestAndToggle(&p->au32[0], 16) && p->au32[0] == ~0x40000001U);
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| 163 | CHECK(ASMAtomicBitTestAndToggle(&p->au32[0], 80) && p->au32[2] == ~0x00010001U);
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| 164 |
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| 165 | /* test bit. */
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| 166 | for (i = 0; i < 128; i++)
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| 167 | {
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| 168 | MAP_SET(p);
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| 169 | CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
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| 170 | ASMBitToggle(&p->au32[0], i);
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| 171 | CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
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| 172 | CHECK_BIT(!ASMBitTestAndToggle(&p->au32[0], i), i);
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| 173 | CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
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| 174 | CHECK_BIT(ASMBitTestAndToggle(&p->au32[0], i), i);
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| 175 | CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
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| 176 |
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| 177 | MAP_SET(p);
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| 178 | CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
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| 179 | ASMAtomicBitToggle(&p->au32[0], i);
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| 180 | CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
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| 181 | CHECK_BIT(!ASMAtomicBitTestAndToggle(&p->au32[0], i), i);
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| 182 | CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
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| 183 | CHECK_BIT(ASMAtomicBitTestAndToggle(&p->au32[0], i), i);
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| 184 | CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
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| 185 | }
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| 186 |
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| 187 | /* bit searching */
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| 188 | MAP_SET(p);
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| 189 | CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == -1);
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| 190 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
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| 191 |
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| 192 | ASMBitClear(&p->au32[0], 1);
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| 193 | CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 1);
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| 194 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
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| 195 |
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| 196 | MAP_SET(p);
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| 197 | ASMBitClear(&p->au32[0], 95);
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| 198 | CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 95);
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| 199 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
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| 200 |
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| 201 | MAP_SET(p);
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| 202 | ASMBitClear(&p->au32[0], 127);
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| 203 | CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 127);
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| 204 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
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| 205 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 0) == 1);
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| 206 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 1) == 2);
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| 207 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 2) == 3);
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| 208 |
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| 209 |
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| 210 | MAP_SET(p);
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| 211 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 0) == -1);
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| 212 | ASMBitClear(&p->au32[0], 32);
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| 213 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 32) == -1);
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| 214 | ASMBitClear(&p->au32[0], 88);
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| 215 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 57) == 88);
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| 216 |
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| 217 | MAP_SET(p);
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| 218 | ASMBitClear(&p->au32[0], 31);
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| 219 | ASMBitClear(&p->au32[0], 57);
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| 220 | ASMBitClear(&p->au32[0], 88);
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| 221 | ASMBitClear(&p->au32[0], 101);
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| 222 | ASMBitClear(&p->au32[0], 126);
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| 223 | ASMBitClear(&p->au32[0], 127);
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| 224 | CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 31);
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| 225 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 31) == 57);
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| 226 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 57) == 88);
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| 227 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 88) == 101);
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| 228 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 101) == 126);
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| 229 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 126) == 127);
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| 230 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 127) == -1);
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| 231 |
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| 232 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 29) == 30);
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| 233 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 30) == 32);
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| 234 |
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| 235 | MAP_CLEAR(p);
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| 236 | for (i = 1; i < 128; i++)
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| 237 | CHECK_BIT(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, i - 1) == i, i);
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| 238 | for (i = 0; i < 128; i++)
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| 239 | {
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| 240 | MAP_SET(p);
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| 241 | ASMBitClear(&p->au32[0], i);
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| 242 | CHECK_BIT(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == i, i);
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| 243 | for (j = 0; j < i; j++)
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| 244 | CHECK_BIT(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, j) == i, i);
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| 245 | for (j = i; j < 128; j++)
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| 246 | CHECK_BIT(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, j) == -1, i);
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| 247 | }
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| 248 |
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| 249 | /* clear range. */
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| 250 | MAP_SET(p);
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| 251 | ASMBitClearRange(&p->au32, 0, 128);
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| 252 | CHECK(!p->au32[0] && !p->au32[1] && !p->au32[2] && !p->au32[3]);
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| 253 | for (i = 0; i < 128; i++)
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| 254 | {
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| 255 | for (j = i + 1; j <= 128; j++)
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| 256 | {
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| 257 | MAP_SET(p);
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| 258 | ASMBitClearRange(&p->au32, i, j);
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| 259 | for (k = 0; k < i; k++)
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| 260 | CHECK_BIT3(ASMBitTest(&p->au32[0], k), i, j, k);
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| 261 | for (k = i; k < j; k++)
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| 262 | CHECK_BIT3(!ASMBitTest(&p->au32[0], k), i, j, k);
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| 263 | for (k = j; k < 128; k++)
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| 264 | CHECK_BIT3(ASMBitTest(&p->au32[0], k), i, j, k);
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| 265 | }
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| 266 | }
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| 267 |
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| 268 | /* searching for set bits. */
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| 269 | MAP_CLEAR(p);
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| 270 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == -1);
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| 271 |
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| 272 | ASMBitSet(&p->au32[0], 65);
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| 273 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 65);
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| 274 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 65) == -1);
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| 275 | for (i = 0; i < 65; i++)
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| 276 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == 65);
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| 277 | for (i = 65; i < 128; i++)
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| 278 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == -1);
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| 279 |
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| 280 | ASMBitSet(&p->au32[0], 17);
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| 281 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 17);
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| 282 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 17) == 65);
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| 283 | for (i = 0; i < 16; i++)
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| 284 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == 17);
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| 285 | for (i = 17; i < 65; i++)
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| 286 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == 65);
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| 287 |
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| 288 | MAP_SET(p);
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| 289 | for (i = 1; i < 128; i++)
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| 290 | CHECK_BIT(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i - 1) == i, i);
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| 291 | for (i = 0; i < 128; i++)
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| 292 | {
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| 293 | MAP_CLEAR(p);
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| 294 | ASMBitSet(&p->au32[0], i);
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| 295 | CHECK_BIT(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == i, i);
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| 296 | for (j = 0; j < i; j++)
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| 297 | CHECK_BIT(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, j) == i, i);
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| 298 | for (j = i; j < 128; j++)
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| 299 | CHECK_BIT(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, j) == -1, i);
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| 300 | }
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| 301 |
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| 302 |
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| 303 | CHECK(ASMBitLastSetU32(0) == 0);
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| 304 | CHECK(ASMBitLastSetU32(1) == 1);
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| 305 | CHECK(ASMBitLastSetU32(0x80000000) == 32);
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| 306 | CHECK(ASMBitLastSetU32(0xffffffff) == 32);
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| 307 | CHECK(ASMBitLastSetU32(RT_BIT(23) | RT_BIT(11)) == 24);
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| 308 | for (i = 0; i < 32; i++)
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| 309 | CHECK(ASMBitLastSetU32(1 << i) == (unsigned)i + 1);
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| 310 |
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| 311 | CHECK(ASMBitFirstSetU32(0) == 0);
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| 312 | CHECK(ASMBitFirstSetU32(1) == 1);
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| 313 | CHECK(ASMBitFirstSetU32(0x80000000) == 32);
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| 314 | CHECK(ASMBitFirstSetU32(0xffffffff) == 1);
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| 315 | CHECK(ASMBitFirstSetU32(RT_BIT(23) | RT_BIT(11)) == 12);
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| 316 | for (i = 0; i < 32; i++)
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| 317 | CHECK(ASMBitFirstSetU32(1 << i) == (unsigned)i + 1);
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| 318 |
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| 319 | /*
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| 320 | * Summary
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| 321 | */
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| 322 | return RTTestSummaryAndDestroy(hTest);
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| 323 | }
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