1 | /* $Id: tstBitOperations.cpp 2981 2007-06-01 16:01:28Z vboxsync $ */
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2 | /** @file
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3 | * innotek Portable Runtime 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 innotek GmbH
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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.virtualbox.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 as published by the Free Software Foundation,
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13 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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14 | * distribution. VirtualBox OSE is distributed in the hope that it will
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15 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | *
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17 | * If you received this file as part of a commercial VirtualBox
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18 | * distribution, then only the terms of your commercial VirtualBox
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19 | * license agreement apply instead of the previous paragraph.
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20 | */
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21 |
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22 |
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23 | /*******************************************************************************
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24 | * Header Files *
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25 | *******************************************************************************/
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26 | #include <iprt/asm.h>
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27 | #include <iprt/stream.h>
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28 | #include <iprt/string.h>
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29 |
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30 |
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31 | int main()
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32 | {
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33 | int rcRet = 0;
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34 | int i;
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35 | int j;
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36 | int k;
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37 | RTPrintf("tstBitOperations: TESTING\n");
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38 |
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39 |
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40 | /*
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41 | * Tests
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42 | */
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43 | uint32_t au32[4];
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44 | #define MAP_CLEAR(a) memset(&a, 0, sizeof(a));
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45 | #define MAP_SET(a) memset(&a, 0xff, sizeof(a));
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46 | #define DUMP() RTPrintf("au32={%08x,%08x,%08x,%08x}\n", au32[0], au32[1], au32[2], au32[3])
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47 | #define CHECK(expr) do { if (!(expr)) { RTPrintf("tstBitOperations: error line %d: %s\n", __LINE__, #expr); DUMP(); rcRet++; } } while (0)
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48 | #define CHECK_BIT(expr, b1) do { if (!(expr)) { RTPrintf("tstBitOperations: error line %d, b1=%d: %s\n", __LINE__, b1, #expr); rcRet++; } } while (0)
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49 | #define CHECK_BIT2(expr, b1, b2) do { if (!(expr)) { RTPrintf("tstBitOperations: error line %d, b1=%d b2=%d: %s\n", __LINE__, b1, b2, #expr); rcRet++; } } while (0)
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50 | #define CHECK_BIT3(expr, b1, b2, b3) do { if (!(expr)) { RTPrintf("tstBitOperations: error line %d, b1=%d b2=%d b3=%d: %s\n", __LINE__, b1, b2, b3, #expr); rcRet++; } } while (0)
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51 |
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52 | /* set */
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53 | MAP_CLEAR(au32);
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54 | ASMBitSet(&au32[0], 0);
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55 | ASMBitSet(&au32[0], 31);
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56 | ASMBitSet(&au32[0], 65);
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57 | CHECK(au32[0] == 0x80000001U);
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58 | CHECK(au32[2] == 0x00000002U);
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59 | CHECK(ASMBitTestAndSet(&au32[0], 0) && au32[0] == 0x80000001U);
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60 | CHECK(!ASMBitTestAndSet(&au32[0], 16) && au32[0] == 0x80010001U);
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61 | CHECK(ASMBitTestAndSet(&au32[0], 16) && au32[0] == 0x80010001U);
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62 | CHECK(!ASMBitTestAndSet(&au32[0], 80) && au32[2] == 0x00010002U);
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63 |
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64 | MAP_CLEAR(au32);
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65 | ASMAtomicBitSet(&au32[0], 0);
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66 | ASMAtomicBitSet(&au32[0], 30);
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67 | ASMAtomicBitSet(&au32[0], 64);
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68 | CHECK(au32[0] == 0x40000001U);
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69 | CHECK(au32[2] == 0x00000001U);
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70 | CHECK(ASMAtomicBitTestAndSet(&au32[0], 0) && au32[0] == 0x40000001U);
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71 | CHECK(!ASMAtomicBitTestAndSet(&au32[0], 16) && au32[0] == 0x40010001U);
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72 | CHECK(ASMAtomicBitTestAndSet(&au32[0], 16) && au32[0] == 0x40010001U);
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73 | CHECK(!ASMAtomicBitTestAndSet(&au32[0], 80) && au32[2] == 0x00010001U);
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74 |
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75 | /* clear */
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76 | MAP_SET(au32);
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77 | ASMBitClear(&au32[0], 0);
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78 | ASMBitClear(&au32[0], 31);
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79 | ASMBitClear(&au32[0], 65);
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80 | CHECK(au32[0] == ~0x80000001U);
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81 | CHECK(au32[2] == ~0x00000002U);
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82 | CHECK(!ASMBitTestAndClear(&au32[0], 0) && au32[0] == ~0x80000001U);
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83 | CHECK(ASMBitTestAndClear(&au32[0], 16) && au32[0] == ~0x80010001U);
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84 | CHECK(!ASMBitTestAndClear(&au32[0], 16) && au32[0] == ~0x80010001U);
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85 | CHECK(ASMBitTestAndClear(&au32[0], 80) && au32[2] == ~0x00010002U);
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86 |
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87 | MAP_SET(au32);
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88 | ASMAtomicBitClear(&au32[0], 0);
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89 | ASMAtomicBitClear(&au32[0], 30);
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90 | ASMAtomicBitClear(&au32[0], 64);
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91 | CHECK(au32[0] == ~0x40000001U);
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92 | CHECK(au32[2] == ~0x00000001U);
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93 | CHECK(!ASMAtomicBitTestAndClear(&au32[0], 0) && au32[0] == ~0x40000001U);
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94 | CHECK(ASMAtomicBitTestAndClear(&au32[0], 16) && au32[0] == ~0x40010001U);
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95 | CHECK(!ASMAtomicBitTestAndClear(&au32[0], 16) && au32[0] == ~0x40010001U);
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96 | CHECK(ASMAtomicBitTestAndClear(&au32[0], 80) && au32[2] == ~0x00010001U);
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97 |
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98 | /* toggle */
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99 | MAP_SET(au32);
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100 | ASMBitToggle(&au32[0], 0);
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101 | ASMBitToggle(&au32[0], 31);
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102 | ASMBitToggle(&au32[0], 65);
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103 | ASMBitToggle(&au32[0], 47);
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104 | ASMBitToggle(&au32[0], 47);
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105 | CHECK(au32[0] == ~0x80000001U);
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106 | CHECK(au32[2] == ~0x00000002U);
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107 | CHECK(!ASMBitTestAndToggle(&au32[0], 0) && au32[0] == ~0x80000000U);
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108 | CHECK(ASMBitTestAndToggle(&au32[0], 0) && au32[0] == ~0x80000001U);
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109 | CHECK(ASMBitTestAndToggle(&au32[0], 16) && au32[0] == ~0x80010001U);
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110 | CHECK(!ASMBitTestAndToggle(&au32[0], 16) && au32[0] == ~0x80000001U);
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111 | CHECK(ASMBitTestAndToggle(&au32[0], 80) && au32[2] == ~0x00010002U);
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112 |
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113 | MAP_SET(au32);
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114 | ASMAtomicBitToggle(&au32[0], 0);
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115 | ASMAtomicBitToggle(&au32[0], 30);
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116 | ASMAtomicBitToggle(&au32[0], 64);
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117 | ASMAtomicBitToggle(&au32[0], 47);
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118 | ASMAtomicBitToggle(&au32[0], 47);
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119 | CHECK(au32[0] == ~0x40000001U);
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120 | CHECK(au32[2] == ~0x00000001U);
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121 | CHECK(!ASMAtomicBitTestAndToggle(&au32[0], 0) && au32[0] == ~0x40000000U);
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122 | CHECK(ASMAtomicBitTestAndToggle(&au32[0], 0) && au32[0] == ~0x40000001U);
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123 | CHECK(ASMAtomicBitTestAndToggle(&au32[0], 16) && au32[0] == ~0x40010001U);
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124 | CHECK(!ASMAtomicBitTestAndToggle(&au32[0], 16) && au32[0] == ~0x40000001U);
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125 | CHECK(ASMAtomicBitTestAndToggle(&au32[0], 80) && au32[2] == ~0x00010001U);
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126 |
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127 | /* test bit. */
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128 | for (i = 0; i < 128; i++)
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129 | {
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130 | MAP_SET(au32);
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131 | CHECK_BIT(ASMBitTest(&au32[0], i), i);
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132 | ASMBitToggle(&au32[0], i);
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133 | CHECK_BIT(!ASMBitTest(&au32[0], i), i);
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134 | CHECK_BIT(!ASMBitTestAndToggle(&au32[0], i), i);
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135 | CHECK_BIT(ASMBitTest(&au32[0], i), i);
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136 | CHECK_BIT(ASMBitTestAndToggle(&au32[0], i), i);
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137 | CHECK_BIT(!ASMBitTest(&au32[0], i), i);
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138 |
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139 | MAP_SET(au32);
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140 | CHECK_BIT(ASMBitTest(&au32[0], i), i);
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141 | ASMAtomicBitToggle(&au32[0], i);
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142 | CHECK_BIT(!ASMBitTest(&au32[0], i), i);
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143 | CHECK_BIT(!ASMAtomicBitTestAndToggle(&au32[0], i), i);
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144 | CHECK_BIT(ASMBitTest(&au32[0], i), i);
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145 | CHECK_BIT(ASMAtomicBitTestAndToggle(&au32[0], i), i);
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146 | CHECK_BIT(!ASMBitTest(&au32[0], i), i);
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147 |
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148 | }
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149 |
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150 | /* bit searching */
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151 | MAP_SET(au32);
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152 | CHECK(ASMBitFirstClear(&au32[0], sizeof(au32) * 8) == -1);
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153 | CHECK(ASMBitFirstSet(&au32[0], sizeof(au32) * 8) == 0);
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154 |
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155 | ASMBitClear(&au32[0], 1);
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156 | CHECK(ASMBitFirstClear(&au32[0], sizeof(au32) * 8) == 1);
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157 | CHECK(ASMBitFirstSet(&au32[0], sizeof(au32) * 8) == 0);
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158 |
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159 | MAP_SET(au32);
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160 | ASMBitClear(&au32[0], 95);
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161 | CHECK(ASMBitFirstClear(&au32[0], sizeof(au32) * 8) == 95);
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162 | CHECK(ASMBitFirstSet(&au32[0], sizeof(au32) * 8) == 0);
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163 |
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164 | MAP_SET(au32);
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165 | ASMBitClear(&au32[0], 127);
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166 | CHECK(ASMBitFirstClear(&au32[0], sizeof(au32) * 8) == 127);
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167 | CHECK(ASMBitFirstSet(&au32[0], sizeof(au32) * 8) == 0);
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168 | CHECK(ASMBitNextSet(&au32[0], sizeof(au32) * 8, 0) == 1);
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169 | CHECK(ASMBitNextSet(&au32[0], sizeof(au32) * 8, 1) == 2);
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170 | CHECK(ASMBitNextSet(&au32[0], sizeof(au32) * 8, 2) == 3);
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171 |
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172 |
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173 | MAP_SET(au32);
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174 | CHECK(ASMBitNextClear(&au32[0], sizeof(au32) * 8, 0) == -1);
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175 | ASMBitClear(&au32[0], 32);
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176 | CHECK(ASMBitNextClear(&au32[0], sizeof(au32) * 8, 32) == -1);
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177 | ASMBitClear(&au32[0], 88);
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178 | CHECK(ASMBitNextClear(&au32[0], sizeof(au32) * 8, 57) == 88);
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179 |
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180 | MAP_SET(au32);
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181 | ASMBitClear(&au32[0], 31);
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182 | ASMBitClear(&au32[0], 57);
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183 | ASMBitClear(&au32[0], 88);
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184 | ASMBitClear(&au32[0], 101);
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185 | ASMBitClear(&au32[0], 126);
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186 | ASMBitClear(&au32[0], 127);
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187 | CHECK(ASMBitFirstClear(&au32[0], sizeof(au32) * 8) == 31);
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188 | CHECK(ASMBitNextClear(&au32[0], sizeof(au32) * 8, 31) == 57);
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189 | CHECK(ASMBitNextClear(&au32[0], sizeof(au32) * 8, 57) == 88);
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190 | CHECK(ASMBitNextClear(&au32[0], sizeof(au32) * 8, 88) == 101);
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191 | CHECK(ASMBitNextClear(&au32[0], sizeof(au32) * 8, 101) == 126);
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192 | CHECK(ASMBitNextClear(&au32[0], sizeof(au32) * 8, 126) == 127);
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193 | CHECK(ASMBitNextClear(&au32[0], sizeof(au32) * 8, 127) == -1);
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194 |
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195 | CHECK(ASMBitNextSet(&au32[0], sizeof(au32) * 8, 29) == 30);
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196 | CHECK(ASMBitNextSet(&au32[0], sizeof(au32) * 8, 30) == 32);
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197 |
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198 | MAP_CLEAR(au32);
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199 | for (i = 1; i < 128; i++)
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200 | CHECK_BIT(ASMBitNextClear(&au32[0], sizeof(au32) * 8, i - 1) == i, i);
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201 | for (i = 0; i < 128; i++)
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202 | {
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203 | MAP_SET(au32);
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204 | ASMBitClear(&au32[0], i);
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205 | CHECK_BIT(ASMBitFirstClear(&au32[0], sizeof(au32) * 8) == i, i);
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206 | for (j = 0; j < i; j++)
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207 | CHECK_BIT(ASMBitNextClear(&au32[0], sizeof(au32) * 8, j) == i, i);
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208 | for (j = i; j < 128; j++)
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209 | CHECK_BIT(ASMBitNextClear(&au32[0], sizeof(au32) * 8, j) == -1, i);
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210 | }
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211 |
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212 | /* clear range. */
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213 | MAP_SET(au32);
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214 | ASMBitClearRange(&au32, 0, 128);
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215 | CHECK(!au32[0] && !au32[1] && !au32[2] && !au32[3]);
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216 | for (i = 0; i < 128; i++)
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217 | {
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218 | for (j = i + 1; j <= 128; j++)
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219 | {
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220 | MAP_SET(au32);
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221 | ASMBitClearRange(&au32, i, j);
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222 | for (k = 0; k < i; k++)
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223 | CHECK_BIT3(ASMBitTest(&au32[0], k), i, j, k);
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224 | for (k = i; k < j; k++)
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225 | CHECK_BIT3(!ASMBitTest(&au32[0], k), i, j, k);
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226 | for (k = j; k < 128; k++)
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227 | CHECK_BIT3(ASMBitTest(&au32[0], k), i, j, k);
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228 | }
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229 | }
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230 |
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231 | /* searching for set bits. */
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232 | MAP_CLEAR(au32);
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233 | CHECK(ASMBitFirstSet(&au32[0], sizeof(au32) * 8) == -1);
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234 |
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235 | ASMBitSet(&au32[0], 65);
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236 | CHECK(ASMBitFirstSet(&au32[0], sizeof(au32) * 8) == 65);
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237 | CHECK(ASMBitNextSet(&au32[0], sizeof(au32) * 8, 65) == -1);
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238 | for (i = 0; i < 65; i++)
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239 | CHECK(ASMBitNextSet(&au32[0], sizeof(au32) * 8, i) == 65);
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240 | for (i = 65; i < 128; i++)
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241 | CHECK(ASMBitNextSet(&au32[0], sizeof(au32) * 8, i) == -1);
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242 |
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243 | ASMBitSet(&au32[0], 17);
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244 | CHECK(ASMBitFirstSet(&au32[0], sizeof(au32) * 8) == 17);
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245 | CHECK(ASMBitNextSet(&au32[0], sizeof(au32) * 8, 17) == 65);
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246 | for (i = 0; i < 16; i++)
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247 | CHECK(ASMBitNextSet(&au32[0], sizeof(au32) * 8, i) == 17);
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248 | for (i = 17; i < 65; i++)
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249 | CHECK(ASMBitNextSet(&au32[0], sizeof(au32) * 8, i) == 65);
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250 |
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251 | MAP_SET(au32);
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252 | for (i = 1; i < 128; i++)
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253 | CHECK_BIT(ASMBitNextSet(&au32[0], sizeof(au32) * 8, i - 1) == i, i);
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254 | for (i = 0; i < 128; i++)
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255 | {
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256 | MAP_CLEAR(au32);
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257 | ASMBitSet(&au32[0], i);
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258 | CHECK_BIT(ASMBitFirstSet(&au32[0], sizeof(au32) * 8) == i, i);
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259 | for (j = 0; j < i; j++)
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260 | CHECK_BIT(ASMBitNextSet(&au32[0], sizeof(au32) * 8, j) == i, i);
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261 | for (j = i; j < 128; j++)
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262 | CHECK_BIT(ASMBitNextSet(&au32[0], sizeof(au32) * 8, j) == -1, i);
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263 | }
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264 |
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265 |
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266 | CHECK(ASMBitLastSetU32(0) == 0);
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267 | CHECK(ASMBitLastSetU32(1) == 1);
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268 | CHECK(ASMBitLastSetU32(0x80000000) == 32);
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269 | CHECK(ASMBitLastSetU32(0xffffffff) == 32);
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270 | CHECK(ASMBitLastSetU32(BIT(23) | BIT(11)) == 24);
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271 | for (i = 0; i < 32; i++)
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272 | CHECK(ASMBitLastSetU32(1 << i) == (unsigned)i + 1);
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273 |
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274 | CHECK(ASMBitFirstSetU32(0) == 0);
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275 | CHECK(ASMBitFirstSetU32(1) == 1);
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276 | CHECK(ASMBitFirstSetU32(0x80000000) == 32);
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277 | CHECK(ASMBitFirstSetU32(0xffffffff) == 1);
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278 | CHECK(ASMBitFirstSetU32(BIT(23) | BIT(11)) == 12);
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279 | for (i = 0; i < 32; i++)
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280 | CHECK(ASMBitFirstSetU32(1 << i) == (unsigned)i + 1);
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281 |
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282 | /*
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283 | * Summary
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284 | */
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285 | if (!rcRet)
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286 | RTPrintf("tstBitOperations: SUCCESS\n");
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287 | else
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288 | RTPrintf("tstBitOperations: FAILURE - %d errors\n", rcRet);
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289 | return rcRet;
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290 | }
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