Mercurial > projects > ldc
annotate druntime/src/compiler/dmd/util/cpuid.d @ 759:d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
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date | Tue, 11 Nov 2008 01:52:37 +0100 |
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759
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Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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1 /** |
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2 * Identify the characteristics of the host CPU. |
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3 * |
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4 * Implemented according to: |
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5 |
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6 - AP-485 Intel(C) Processor Identification and the CPUID Instruction |
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7 $(LINK http://www.intel.com/design/xeon/applnots/241618.htm) |
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8 |
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9 - Intel(R) 64 and IA-32 Architectures Software Developer's Manual, Volume 2A: Instruction Set Reference, A-M |
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10 $(LINK http://developer.intel.com/design/pentium4/manuals/index_new.htm) |
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11 |
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12 - AMD CPUID Specification Publication # 25481 |
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13 $(LINK http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/25481.pdf) |
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14 |
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15 Example: |
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16 --- |
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17 import std.cpuid; |
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18 import std.stdio; |
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19 |
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20 void main() |
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21 { |
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22 writefln(std.cpuid.toString()); |
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23 } |
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24 --- |
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25 |
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26 AUTHORS: Tomas Lindquist Olsen <tomas@famolsen.dk> |
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27 (slightly altered by Walter Bright) |
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28 COPYRIGHT: Public Domain |
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29 |
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30 * BUGS: Only works on x86 CPUs |
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31 * |
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32 * Macros: |
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33 * WIKI = Phobos/StdCpuid |
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34 * COPYRIGHT = Public Domain |
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35 */ |
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36 |
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37 /* |
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38 * Modified by Sean Kelly for use with the D Runtime Project |
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39 */ |
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40 |
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41 module rt.util.cpuid; |
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42 |
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43 private import stdc.string; |
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44 |
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45 version(D_InlineAsm_X86) |
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46 { |
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47 /// Returns vendor string |
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48 char[] vendor() {return vendorStr;} |
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49 /// Returns processor string |
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50 string processor() {return processorStr;} |
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51 |
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52 /// Is MMX supported? |
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53 bool mmx() {return (flags&MMX_BIT)!=0;} |
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54 /// Is FXSR supported? |
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55 bool fxsr() {return (flags&FXSR_BIT)!=0;} |
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56 /// Is SSE supported? |
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57 bool sse() {return (flags&SSE_BIT)!=0;} |
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58 /// Is SSE2 supported? |
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59 bool sse2() {return (flags&SSE2_BIT)!=0;} |
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60 /// Is SSE3 supported? |
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61 bool sse3() {return (misc&SSE3_BIT)!=0;} |
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62 /// Is SSSE3 supported? |
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63 bool ssse3() {return (misc&SSSE3_BIT)!=0;} |
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64 |
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65 /// Is AMD 3DNOW supported? |
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66 bool amd3dnow() {return (exflags&AMD_3DNOW_BIT)!=0;} |
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67 /// Is AMD 3DNOW Ext supported? |
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68 bool amd3dnowExt() {return (exflags&AMD_3DNOW_EXT_BIT)!=0;} |
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69 /// Is AMD MMX supported? |
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70 bool amdMmx() {return (exflags&AMD_MMX_BIT)!=0;} |
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71 |
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72 /// Is this an Intel Architecture IA64? |
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73 bool ia64() {return (flags&IA64_BIT)!=0;} |
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74 /// Is this an AMD 64? |
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75 bool amd64() {return (exflags&AMD64_BIT)!=0;} |
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76 |
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77 /// Is hyperthreading supported? |
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78 bool hyperThreading() {return (flags&HTT_BIT)!=0;} |
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79 /// Returns number of threads per CPU |
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80 uint threadsPerCPU() {return maxThreads;} |
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81 /// Returns number of cores in CPU |
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82 uint coresPerCPU() {return maxCores;} |
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83 |
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84 /// Is this an Intel processor? |
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85 bool intel() {return manufac==INTEL;} |
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86 /// Is this an AMD processor? |
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87 bool amd() {return manufac==AMD;} |
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88 |
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89 /// Returns stepping |
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90 uint stepping() {return _stepping;} |
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91 /// Returns model |
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92 uint model() {return _model;} |
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93 /// Returns family |
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94 uint family() {return _family;} |
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95 //uint processorType() {return (signature>>>12)&0x3;} |
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96 |
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97 static this() |
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98 { |
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99 getVendorString(); |
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100 getProcessorString(); |
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101 getFeatureFlags(); |
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102 |
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103 // stepping / family / model |
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104 _stepping = signature&0xF; |
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105 uint fbase = (signature>>>8)&0xF; |
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106 uint fex = (signature>>>20)&0xFF; |
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107 uint mbase = (signature>>>4)&0xF; |
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108 uint mex = (signature>>>16)&0xF; |
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109 |
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110 // vendor specific |
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111 void function() threadFn; |
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112 switch(vendorStr) |
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113 { |
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114 case "GenuineIntel": |
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115 manufac = INTEL; |
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116 threadFn = &getThreadingIntel; |
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117 if (fbase == 0xF) |
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118 _family = fbase+fex; |
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119 else |
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120 _family = fbase; |
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121 if (_family == 0x6 || _family == 0xF) |
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122 _model = mbase+(mex<<4); |
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123 else |
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124 _model = mbase; |
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125 break; |
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126 |
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127 case "AuthenticAMD": |
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128 manufac = AMD; |
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129 threadFn = &getThreadingAMD; |
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130 if (fbase < 0xF) |
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131 { |
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132 _family = fbase; |
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133 _model = mbase; |
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134 } |
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135 else |
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136 { |
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137 _family = fbase+fex; |
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138 _model = mbase+(mex<<4); |
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139 } |
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140 break; |
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141 |
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142 default: |
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143 manufac = OTHER; |
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144 } |
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145 |
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146 // threading details |
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147 if (hyperThreading && threadFn !is null) |
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148 { |
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149 threadFn(); |
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150 } |
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151 } |
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152 |
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153 private: |
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154 // feature flags |
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155 enum : uint |
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156 { |
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157 MMX_BIT = 1<<23, |
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158 FXSR_BIT = 1<<24, |
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159 SSE_BIT = 1<<25, |
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160 SSE2_BIT = 1<<26, |
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161 HTT_BIT = 1<<28, |
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162 IA64_BIT = 1<<30 |
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163 } |
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164 // feature flags misc |
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165 enum : uint |
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166 { |
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167 SSE3_BIT = 1, |
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168 SSSE3_BIT = 1<<9 |
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169 } |
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170 // extended feature flags |
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171 enum : uint |
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172 { |
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173 AMD_MMX_BIT = 1<<22, |
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174 AMD64_BIT = 1<<29, |
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175 AMD_3DNOW_EXT_BIT = 1<<30, |
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176 AMD_3DNOW_BIT = 1<<31 |
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177 } |
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178 // manufacturer |
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179 enum |
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180 { |
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181 OTHER, |
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182 INTEL, |
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183 AMD |
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184 } |
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185 |
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186 uint flags, misc, exflags, apic, signature; |
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187 uint _stepping, _model, _family; |
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188 |
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189 char[12] vendorStr = 0; |
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190 string processorStr = ""; |
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191 |
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192 uint maxThreads=1; |
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193 uint maxCores=1; |
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194 uint manufac=OTHER; |
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195 |
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196 /* ** |
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197 * fetches the cpu vendor string |
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198 */ |
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199 private void getVendorString() |
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200 { |
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201 char* dst = vendorStr.ptr; |
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202 // puts the vendor string into dst |
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203 asm |
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204 { |
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205 mov EAX, 0 ; |
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206 cpuid ; |
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207 mov EAX, dst ; |
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208 mov [EAX], EBX ; |
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209 mov [EAX+4], EDX ; |
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210 mov [EAX+8], ECX ; |
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211 } |
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212 } |
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213 |
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214 private void getProcessorString() |
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215 { |
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216 char[48] buffer; |
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217 char* dst = buffer.ptr; |
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218 // puts the processor string into dst |
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219 asm |
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220 { |
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221 mov EAX, 0x8000_0000 ; |
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222 cpuid ; |
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223 cmp EAX, 0x8000_0004 ; |
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224 jb PSLabel ; // no support |
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225 push EDI ; |
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226 mov EDI, dst ; |
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227 mov EAX, 0x8000_0002 ; |
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228 cpuid ; |
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229 mov [EDI], EAX ; |
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230 mov [EDI+4], EBX ; |
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231 mov [EDI+8], ECX ; |
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232 mov [EDI+12], EDX ; |
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233 mov EAX, 0x8000_0003 ; |
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234 cpuid ; |
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235 mov [EDI+16], EAX ; |
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236 mov [EDI+20], EBX ; |
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237 mov [EDI+24], ECX ; |
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238 mov [EDI+28], EDX ; |
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239 mov EAX, 0x8000_0004 ; |
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240 cpuid ; |
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241 mov [EDI+32], EAX ; |
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242 mov [EDI+36], EBX ; |
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243 mov [EDI+40], ECX ; |
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244 mov [EDI+44], EDX ; |
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245 pop EDI ; |
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246 PSLabel: ; |
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247 } |
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248 |
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249 if (buffer[0] == char.init) // no support |
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250 return; |
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251 |
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252 // seems many intel processors prepend whitespace |
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253 processorStr = cast(string)strip(toString(dst)).dup; |
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254 } |
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255 |
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256 private void getFeatureFlags() |
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257 { |
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258 uint f,m,e,a,s; |
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259 asm |
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260 { |
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261 mov EAX, 0 ; |
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262 cpuid ; |
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263 cmp EAX, 1 ; |
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264 jb FeatLabel ; // no support |
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265 mov EAX, 1 ; |
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266 cpuid ; |
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267 mov f, EDX ; |
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268 mov m, ECX ; |
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269 mov a, EBX ; |
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270 mov s, EAX ; |
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271 |
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272 FeatLabel: ; |
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273 mov EAX, 0x8000_0000 ; |
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274 cpuid ; |
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275 cmp EAX, 0x8000_0001 ; |
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276 jb FeatLabel2 ; // no support |
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277 mov EAX, 0x8000_0001 ; |
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278 cpuid ; |
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279 mov e, EDX ; |
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280 |
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281 FeatLabel2: |
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282 ; |
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283 } |
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284 flags = f; |
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285 misc = m; |
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286 exflags = e; |
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287 apic = a; |
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288 signature = s; |
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289 } |
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290 |
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291 private void getThreadingIntel() |
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292 { |
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293 uint n; |
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294 ubyte b = 0; |
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295 asm |
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296 { |
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297 mov EAX, 0 ; |
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298 cpuid ; |
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299 cmp EAX, 4 ; |
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300 jb IntelSingle ; |
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301 mov EAX, 4 ; |
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302 mov ECX, 0 ; |
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303 cpuid ; |
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304 mov n, EAX ; |
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305 mov b, 1 ; |
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306 IntelSingle: ; |
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|
307 } |
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|
308 if (b != 0) |
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309 { |
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310 maxCores = ((n>>>26)&0x3F)+1; |
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311 maxThreads = (apic>>>16)&0xFF; |
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312 } |
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|
313 else |
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|
314 { |
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Added copy of druntime from DMD 2.020 modified for LDC.
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315 maxCores = maxThreads = 1; |
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316 } |
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317 } |
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318 |
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319 private void getThreadingAMD() |
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|
320 { |
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321 ubyte n; |
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322 ubyte b = 0; |
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323 asm |
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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|
324 { |
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|
325 mov EAX, 0x8000_0000 ; |
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326 cpuid ; |
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|
327 cmp EAX, 0x8000_0008 ; |
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328 jb AMDSingle ; |
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|
329 mov EAX, 0x8000_0008 ; |
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330 cpuid ; |
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|
331 mov n, CL ; |
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332 mov b, 1 ; |
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333 AMDSingle: ; |
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|
334 } |
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Added copy of druntime from DMD 2.020 modified for LDC.
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|
335 if (b != 0) |
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|
336 { |
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337 maxCores = n+1; |
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|
338 maxThreads = (apic>>>16)&0xFF; |
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339 } |
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340 else |
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341 { |
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342 maxCores = maxThreads = 1; |
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343 } |
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344 } |
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345 |
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346 /*************************************************************************** |
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347 * Support code for above, from std.string and std.ctype |
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348 ***************************************************************************/ |
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349 |
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350 private |
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351 { |
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352 enum |
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353 { |
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354 _SPC = 8, |
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355 _CTL = 0x20, |
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356 _BLK = 0x40, |
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357 _HEX = 0x80, |
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358 _UC = 1, |
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359 _LC = 2, |
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360 _PNC = 0x10, |
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361 _DIG = 4, |
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362 _ALP = _UC|_LC, |
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363 } |
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364 |
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365 ubyte _ctype[128] = |
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366 [ |
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367 _CTL,_CTL,_CTL,_CTL,_CTL,_CTL,_CTL,_CTL, |
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368 _CTL,_CTL|_SPC,_CTL|_SPC,_CTL|_SPC,_CTL|_SPC,_CTL|_SPC,_CTL,_CTL, |
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369 _CTL,_CTL,_CTL,_CTL,_CTL,_CTL,_CTL,_CTL, |
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370 _CTL,_CTL,_CTL,_CTL,_CTL,_CTL,_CTL,_CTL, |
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371 _SPC|_BLK,_PNC,_PNC,_PNC,_PNC,_PNC,_PNC,_PNC, |
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372 _PNC,_PNC,_PNC,_PNC,_PNC,_PNC,_PNC,_PNC, |
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373 _DIG|_HEX,_DIG|_HEX,_DIG|_HEX,_DIG|_HEX,_DIG|_HEX, |
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374 _DIG|_HEX,_DIG|_HEX,_DIG|_HEX,_DIG|_HEX,_DIG|_HEX, |
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375 _PNC,_PNC,_PNC,_PNC,_PNC,_PNC, |
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376 _PNC,_UC|_HEX,_UC|_HEX,_UC|_HEX,_UC|_HEX,_UC|_HEX,_UC|_HEX,_UC, |
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377 _UC,_UC,_UC,_UC,_UC,_UC,_UC,_UC, |
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378 _UC,_UC,_UC,_UC,_UC,_UC,_UC,_UC, |
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379 _UC,_UC,_UC,_PNC,_PNC,_PNC,_PNC,_PNC, |
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380 _PNC,_LC|_HEX,_LC|_HEX,_LC|_HEX,_LC|_HEX,_LC|_HEX,_LC|_HEX,_LC, |
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381 _LC,_LC,_LC,_LC,_LC,_LC,_LC,_LC, |
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382 _LC,_LC,_LC,_LC,_LC,_LC,_LC,_LC, |
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383 _LC,_LC,_LC,_PNC,_PNC,_PNC,_PNC,_CTL |
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384 ]; |
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385 |
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386 /** |
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387 * Returns !=0 if c is a space, tab, vertical tab, form feed, |
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388 * carriage return, or linefeed. |
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389 */ |
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390 int isspace(dchar c) { return (c <= 0x7F) ? _ctype[c] & (_SPC) : 0; } |
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391 |
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392 /***************************************** |
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393 * Strips leading or trailing whitespace, or both. |
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394 */ |
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395 char[] stripl(char[] s) |
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396 { |
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397 uint i; |
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398 |
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399 for (i = 0; i < s.length; i++) |
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|
400 { |
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401 if (!isspace(s[i])) |
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402 break; |
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|
403 } |
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404 return s[i .. s.length]; |
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|
405 } |
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|
406 |
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|
407 char[] stripr(char[] s) /// ditto |
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408 { |
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409 uint i; |
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410 |
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411 for (i = s.length; i > 0; i--) |
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|
412 { |
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|
413 if (!isspace(s[i - 1])) |
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414 break; |
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|
415 } |
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416 return s[0 .. i]; |
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|
417 } |
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418 |
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419 char[] strip(char[] s) /// ditto |
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|
420 { |
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421 return stripr(stripl(s)); |
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|
422 } |
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423 |
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|
424 char[] toString(char* s) |
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425 { |
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426 return s ? s[0 .. strlen(s)] : null; |
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|
427 } |
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428 |
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|
429 string toString(invariant(char)* s) |
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430 { |
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431 return s ? s[0 .. strlen(s)] : null; |
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|
432 } |
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|
433 } |
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|
434 } |
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|
435 else |
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|
436 { |
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|
437 char[] vendor() {return "unknown vendor"; } |
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|
438 char[] processor() {return "unknown processor"; } |
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439 |
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440 bool mmx() {return false; } |
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441 bool fxsr() {return false; } |
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442 bool sse() {return false; } |
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443 bool sse2() {return false; } |
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444 bool sse3() {return false; } |
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445 bool ssse3() {return false; } |
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|
446 |
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447 bool amd3dnow() {return false; } |
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448 bool amd3dnowExt() {return false; } |
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449 bool amdMmx() {return false; } |
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Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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450 |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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451 bool ia64() {return false; } |
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Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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452 bool amd64() {return false; } |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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453 |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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454 bool hyperThreading() {return false; } |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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455 uint threadsPerCPU() {return 0; } |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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456 uint coresPerCPU() {return 0; } |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
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457 |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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458 bool intel() {return false; } |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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459 bool amd() {return false; } |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
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460 |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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461 uint stepping() {return 0; } |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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462 uint model() {return 0; } |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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463 uint family() {return 0; } |
d3eb054172f9
Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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464 } |