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annotate test/testplatform.c @ 3604:e569bbb266eb

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Fixed bug #915 GNU-isms should be avoided wherever possible for portability, please avoid the use of GNU-isms in your code, this may be problematic when using this library in projects which use non-GNU-compliant compilers.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 30 Dec 2009 19:38:08 +0000
parents 3427271a2d75
children bc50cd16bb07
rev   line source
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1
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2 #include <stdio.h>
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3
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4 #include "SDL.h"
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5 #include "SDL_endian.h"
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6 #include "SDL_cpuinfo.h"
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7
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8 /*
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9 * Watcom C flags these as Warning 201: "Unreachable code" if you just
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10 * compare them directly, so we push it through a function to keep the
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11 * compiler quiet. --ryan.
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12 */
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13 static int
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14 badsize(size_t sizeoftype, size_t hardcodetype)
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15 {
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16 return sizeoftype != hardcodetype;
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17 }
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18
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19 int
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20 TestTypes(SDL_bool verbose)
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21 {
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22 int error = 0;
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23
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24 if (badsize(sizeof(Uint8), 1)) {
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25 if (verbose)
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26 printf("sizeof(Uint8) != 1, instead = %lu\n", sizeof(Uint8));
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27 ++error;
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28 }
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29 if (badsize(sizeof(Uint16), 2)) {
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30 if (verbose)
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31 printf("sizeof(Uint16) != 2, instead = %lu\n", sizeof(Uint16));
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32 ++error;
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33 }
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34 if (badsize(sizeof(Uint32), 4)) {
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35 if (verbose)
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36 printf("sizeof(Uint32) != 4, instead = %lu\n", sizeof(Uint32));
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37 ++error;
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38 }
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39 #ifdef SDL_HAS_64BIT_TYPE
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40 if (badsize(sizeof(Uint64), 8)) {
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41 if (verbose)
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42 printf("sizeof(Uint64) != 8, instead = %lu\n", sizeof(Uint64));
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43 ++error;
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44 }
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45 #else
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46 if (verbose) {
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47 printf("WARNING: No 64-bit datatype on this platform\n");
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48 }
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49 #endif
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50 if (verbose && !error)
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51 printf("All data types are the expected size.\n");
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52
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53 return (error ? 1 : 0);
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54 }
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55
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56 int
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57 TestEndian(SDL_bool verbose)
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58 {
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59 int error = 0;
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60 Uint16 value = 0x1234;
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61 int real_byteorder;
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62 Uint16 value16 = 0xCDAB;
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63 Uint16 swapped16 = 0xABCD;
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64 Uint32 value32 = 0xEFBEADDE;
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65 Uint32 swapped32 = 0xDEADBEEF;
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66 #ifdef SDL_HAS_64BIT_TYPE
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67 Uint64 value64, swapped64;
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68 value64 = 0xEFBEADDE;
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69 value64 <<= 32;
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70 value64 |= 0xCDAB3412;
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71 swapped64 = 0x1234ABCD;
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72 swapped64 <<= 32;
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73 swapped64 |= 0xDEADBEEF;
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74 #endif
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75
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76 if (verbose) {
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77 printf("Detected a %s endian machine.\n",
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78 (SDL_BYTEORDER == SDL_LIL_ENDIAN) ? "little" : "big");
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79 }
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80 if ((*((char *) &value) >> 4) == 0x1) {
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81 real_byteorder = SDL_BIG_ENDIAN;
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82 } else {
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83 real_byteorder = SDL_LIL_ENDIAN;
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84 }
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85 if (real_byteorder != SDL_BYTEORDER) {
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86 if (verbose) {
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87 printf("Actually a %s endian machine!\n",
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88 (real_byteorder == SDL_LIL_ENDIAN) ? "little" : "big");
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89 }
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90 ++error;
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91 }
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92 if (verbose) {
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93 printf("Value 16 = 0x%X, swapped = 0x%X\n", value16,
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94 SDL_Swap16(value16));
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95 }
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96 if (SDL_Swap16(value16) != swapped16) {
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97 if (verbose) {
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98 printf("16 bit value swapped incorrectly!\n");
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99 }
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100 ++error;
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101 }
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102 if (verbose) {
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103 printf("Value 32 = 0x%X, swapped = 0x%X\n", value32,
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104 SDL_Swap32(value32));
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105 }
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106 if (SDL_Swap32(value32) != swapped32) {
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107 if (verbose) {
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108 printf("32 bit value swapped incorrectly!\n");
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109 }
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110 ++error;
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111 }
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112 #ifdef SDL_HAS_64BIT_TYPE
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113 if (verbose) {
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114 #ifdef _MSC_VER
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115 printf("Value 64 = 0x%I64X, swapped = 0x%I64X\n", value64,
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116 SDL_Swap64(value64));
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117 #else
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118 printf("Value 64 = 0x%llX, swapped = 0x%llX\n", value64,
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119 SDL_Swap64(value64));
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120 #endif
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121 }
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122 if (SDL_Swap64(value64) != swapped64) {
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123 if (verbose) {
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124 printf("64 bit value swapped incorrectly!\n");
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125 }
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126 ++error;
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127 }
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128 #endif
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129 return (error ? 1 : 0);
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130 }
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131
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132
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133 int
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134 TestCPUInfo(SDL_bool verbose)
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135 {
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136 if (verbose) {
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137 printf("CPU count: %d\n", SDL_GetCPUCount());
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138 printf("RDTSC %s\n", SDL_HasRDTSC()? "detected" : "not detected");
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139 printf("MMX %s\n", SDL_HasMMX()? "detected" : "not detected");
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140 printf("MMX Ext %s\n", SDL_HasMMXExt()? "detected" : "not detected");
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141 printf("3DNow %s\n", SDL_Has3DNow()? "detected" : "not detected");
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142 printf("3DNow Ext %s\n",
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143 SDL_Has3DNowExt()? "detected" : "not detected");
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144 printf("SSE %s\n", SDL_HasSSE()? "detected" : "not detected");
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145 printf("SSE2 %s\n", SDL_HasSSE2()? "detected" : "not detected");
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146 printf("AltiVec %s\n", SDL_HasAltiVec()? "detected" : "not detected");
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147 }
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148 return (0);
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149 }
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150
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151 int
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152 main(int argc, char *argv[])
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153 {
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154 SDL_bool verbose = SDL_TRUE;
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155 int status = 0;
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156
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157 if (argv[1] && (SDL_strcmp(argv[1], "-q") == 0)) {
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158 verbose = SDL_FALSE;
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159 }
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160 if (verbose) {
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161 printf("This system is running %s\n", SDL_GetPlatform());
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162 }
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163
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164 status += TestTypes(verbose);
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165 status += TestEndian(verbose);
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166 status += TestCPUInfo(verbose);
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167 return status;
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168 }