annotate dmd/backend/glue.d @ 184:9f4e5ac4f0a3

One step closer to building on posix. There are two missing symbols so it actually doesn't build but previously it didn't build correctly anyway.
author Jacob Carlborg <doob@me.com>
date Tue, 02 Nov 2010 08:46:11 +0100
parents 190ba98276b3
children
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1 module dmd.backend.glue;
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2
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3 import dmd.common;
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4 import dmd.Array;
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5 import dmd.Dsymbol;
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6 import dmd.File;
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7 import dmd.FileName;
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8 import dmd.Library;
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9 import dmd.OutBuffer;
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10 import dmd.Module;
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11 import dmd.Identifier;
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12 import dmd.AssertExp;
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13 import dmd.TOK;
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14 import dmd.Global;
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15 import dmd.Param;
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16 import dmd.backend.Config;
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17 import dmd.backend.elem;
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18 import dmd.backend.Configv;
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19 import dmd.backend.StringTab;
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20
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21 import core.stdc.string;
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22
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23 version (Windows)
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24 {
25
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25 extern (C++) extern
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26 {
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27 int go_flag(char* cp);
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28 void util_set64();
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29 void util_set386();
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30 }
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31 }
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32 else version (linux)
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33 {
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34 extern (C++)
25
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35 {
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36 int go_flag(char* cp);
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37 void util_set64();
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38 void util_set386();
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39 }
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40 }
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41 else version (OSX)
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42 {
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43 extern (C++)
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44 {
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45 int go_flag(char* cp);
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46 void util_set64();
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47 void util_set386();
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48 }
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49 }
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50 else
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51 {
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52 static assert(false, "fix this");
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53 }
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54
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55 version (CPP_MANGLE)
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56 {
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57 string cpp_mangle(Dsymbol s)
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58 {
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59 assert(false, "port c++ mangling");
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60 }
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61 }
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62
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63 import std.exception;
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64 import std.string;
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65
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66 struct Outbuffer
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67 {
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68 ubyte* buf; // the buffer itself
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69 ubyte* pend; // pointer past the end of the buffer
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70 ubyte* p; // current position in buffer
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71 uint len; // size of buffer
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72 uint inc; // default increment size
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73
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74 this(uint inc)
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75 {
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76 assert(false);
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77 }
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78
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79 ~this()
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80 {
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81 }
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82
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83 void reset()
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84 {
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85 assert(false);
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86 }
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87
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88 // Reserve nbytes in buffer
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89 void reserve(uint nbytes)
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90 {
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91 assert(false);
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92 }
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93
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94 // Write n zeros; return pointer to start of zeros
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95 void* writezeros(uint n)
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96 {
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97 assert(false);
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98 }
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99
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100 // Position buffer to accept the specified number of bytes at offset
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101 int position(uint offset, uint nbytes);
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102
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103 // Write an array to the buffer, no reserve check
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104 void writen(const(void)* b, int len)
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105 {
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106 memcpy(p,b,len);
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107 p += len;
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108 }
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109
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110 // Clear bytes, no reserve check
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111 void clearn(int len)
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112 {
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113 int i;
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114 for (i=0; i< len; i++)
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115 *p++ = 0;
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116 }
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117
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118 // Write an array to the buffer.
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119 void write(const void *b, int len)
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120 {
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121 assert(false);
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122 }
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123
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124 void write(Outbuffer* b)
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125 {
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126 write(b.buf, b.p - b.buf);
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127 }
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128
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129 /**
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130 * Flushes the stream. This will write any buffered
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131 * output bytes.
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132 */
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133 void flush() { }
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134
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135 /**
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136 * Writes an 8 bit byte, no reserve check.
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137 */
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138 void writeByten(char v)
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139 {
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140 *p++ = v;
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141 }
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142
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143 /**
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144 * Writes an 8 bit byte.
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145 */
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146 void writeByte(int v)
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147 {
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148 assert(false);
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149 }
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150
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151 /**
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152 * Writes a 16 bit little-end short, no reserve check.
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153 */
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154 void writeWordn(int v)
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155 {
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156 version (_WIN32) {
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157 *cast(ushort*)p = cast(short)v;
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158 } else {
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159 assert(0, "Check this");
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160 p[0] = cast(ubyte)v;
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161 p[1] = cast(ubyte)(v >> 8);
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162 }
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163 p += 2;
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164 }
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165
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166 /**
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167 * Writes a 16 bit little-end short.
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168 */
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169 void writeWord(int v)
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170 {
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171 reserve(2);
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172 writeWordn(v);
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173 }
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174
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175 /**
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176 * Writes a 16 bit big-end short.
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177 */
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178 void writeShort(int v)
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179 {
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180 if (pend - p < 2)
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181 reserve(2);
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182
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183 static if (false) {
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184 p[0] = (cast(ubyte*)&v)[1];
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185 p[1] = v;
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186 } else {
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187 ubyte* q = p;
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188 q[0] = cast(ubyte)(v >> 8);
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189 q[1] = cast(ubyte)v;
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190 }
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191 p += 2;
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192 }
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193
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194 /**
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195 * Writes a 16 bit char.
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196 */
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197 void writeChar(int v)
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198 {
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199 writeShort(v);
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200 }
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201
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202 /**
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203 * Writes a 32 bit int.
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204 */
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205 void write32(long v)
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206 {
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207 assert(false);
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208 }
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209
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210 /**
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211 * Writes a 64 bit long.
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212 */
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213 ///#if __INTSIZE == 4
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214 void write64(long v)
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215 {
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216 assert(false);
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217 }
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218 ///#endif
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219
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220 /**
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221 * Writes a 32 bit float.
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222 */
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223 void writeFloat(float v)
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224 {
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225 assert(false);
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226 }
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227
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228 /**
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229 * Writes a 64 bit double.
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230 */
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231 void writeDouble(double v)
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232 {
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233 assert(false);
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234 }
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235
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236 void write(const(char)* s)
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237 {
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238 assert(false);
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239 }
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240
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241 void write(const(ubyte)* s)
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242 {
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243 assert(false);
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244 }
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245
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246 void writeString(const(char)* s)
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247 {
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248 assert(false);
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249 }
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250
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251 void prependBytes(const(char)* s)
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252 {
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253 assert(false);
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254 }
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255
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256 void bracket(char c1, char c2)
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257 {
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258 assert(false);
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259 }
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260
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261 /**
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262 * Returns the number of bytes written.
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263 */
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264 int size()
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265 {
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266 return p - buf;
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267 }
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268
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269 char* toString()
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270 {
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271 assert(false);
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272 }
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273
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274 void setsize(uint size)
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275 {
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276 assert(false);
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277 }
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278
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279 void writesLEB128(long value)
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280 {
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281 assert(false);
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282 }
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283
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284 void writeuLEB128(uint value)
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285 {
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286 assert(false);
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287 }
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288 }
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289
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290 /**************************************
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291 * Append s to list of object files to generate later.
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292 */
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293
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294 void obj_append(Dsymbol s)
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295 {
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296 global.obj_symbols_towrite.push(cast(void*)s);
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297 }
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298
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2cc604139636 Implemented Linux support for ddmd. Some parts are a bit hacky to just "get it working", that said, druntime and phobos compile, and unittests pass.
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299 version (Bug4059)
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300 {
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301 private extern (C) void _Z8obj_initP9OutbufferPKcS2_(Outbuffer* objbuf, const(char)* filename, const(char)* csegname);
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302 void obj_init(Outbuffer* objbuf, const(char)* filename, const(char)* csegname) { return _Z8obj_initP9OutbufferPKcS2_(objbuf, filename, csegname); }
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303 }
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304 else
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305 {
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306 extern (C++) {
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307 void obj_init(Outbuffer* objbuf, const(char)* filename, const(char)* csegname);
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308 }
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309 }
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310
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311 extern (C++) {
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312 void backend_init();
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313 void backend_term();
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314 void obj_term();
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315 void rtlsym_reset();
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316 void slist_reset();
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317 void el_reset();
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318 void cg87_reset();
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319 void out_reset();
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320 }
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321
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322 void clearStringTab()
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323 {
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324 //printf("clearStringTab()\n");
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325 memset(global.stringTab.ptr, 0, global.stringTab.sizeof);
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326 global.stidx = 0;
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327
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328 // assertexp_sfilename = null;
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329 // assertexp_name = null;
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330 // assertexp_mn = null;
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331 }
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332
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333 void obj_start(char *srcfile)
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334 {
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335 //printf("obj_start()\n");
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336
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337 out_config_init();
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338
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339 rtlsym_reset();
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340 slist_reset();
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341 clearStringTab();
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342
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343 obj_init(&global.objbuf, srcfile, null);
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344
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345 el_reset();
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346 cg87_reset();
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347 out_reset();
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348 }
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349
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350 void obj_end(Library library, File objfile)
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351 {
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352 obj_term();
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353
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354 auto objbuf = &global.objbuf;
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355
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356 if (library)
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357 {
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358 // Transfer image to library
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359 library.addObject(objfile.name.toChars(), objbuf.buf, objbuf.p - objbuf.buf);
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360 objbuf.buf = null;
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361 }
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362 else
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363 {
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364 // Transfer image to file
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365 objfile.setbuffer(objbuf.buf, objbuf.p - objbuf.buf);
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366 objbuf.buf = null;
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367
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368 string p = FileName.path(objfile.name.toChars());
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369 FileName.ensurePathExists(p);
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370 //mem.free(p);
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371
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372 //printf("write obj %s\n", objfile.name.toChars());
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373 objfile.writev();
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374 }
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375
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376 objbuf.pend = null;
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377 objbuf.p = null;
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378 objbuf.len = 0;
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379 objbuf.inc = 0;
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380 }
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381
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382 void obj_write_deferred(Library library)
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383 {
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384 auto obj_symbols_towrite = global.obj_symbols_towrite;
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385 for (int i = 0; i < obj_symbols_towrite.dim; i++)
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386 {
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387 Dsymbol s = cast(Dsymbol)obj_symbols_towrite.data[i];
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388 Module m = s.getModule();
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389
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390 string mname;
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391 if (m)
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392 {
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393 mname = m.srcfile.toChars();
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394 global.lastmname = mname;
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395 }
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396 else
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397 {
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398 //mname = s->ident->toChars();
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399 mname = global.lastmname;
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400 assert(mname.length != 0);
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401 }
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402
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403 obj_start(cast(char*)toStringz(mname));
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404
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405 int count = ++global.count; // sequence for generating names
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406
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407 /* Create a module that's a doppelganger of m, with just
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408 * enough to be able to create the moduleinfo.
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409 */
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410 auto idbuf = new OutBuffer();
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411 idbuf.printf("%s.%d", m ? m.ident.toChars() : mname, count);
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412 string idstr = idbuf.extractString();
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413 idbuf.data = null;
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414 Identifier id = new Identifier(idstr, TOK.TOKidentifier);
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415
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416 auto md = new Module(mname, id, 0, 0);
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417 md.members = new Dsymbols();
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418 md.members.push(s); // its only 'member' is s
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419 if (m)
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420 {
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421 md.doppelganger = 1; // identify this module as doppelganger
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422 md.md = m.md;
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423 md.aimports.push(cast(void*)m); // it only 'imports' m
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424 md.massert = m.massert;
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425 md.marray = m.marray;
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426 }
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427
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428 md.genobjfile(0);
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429
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430 /* Set object file name to be source name with sequence number,
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431 * as mangled symbol names get way too long.
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432 */
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433 string fname = FileName.removeExt(mname);
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434
0
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435 OutBuffer namebuf = new OutBuffer();
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436 uint hash = 0;
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437 foreach (char c; s.toChars())
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438 hash += c;
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439
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440 namebuf.printf("%s_%x_%x.%s", fname, count, hash, global.obj_ext);
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441 fname = namebuf.extractString();
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442
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443 //printf("writing '%s'\n", fname);
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444 File objfile = new File(fname);
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445 obj_end(library, objfile);
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446 }
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447
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448 obj_symbols_towrite.dim = 0;
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449 }
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450
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451 /**************************************
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452 * Initialize config variables.
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453 */
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454
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455 void out_config_init()
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456 {
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457 Param* params = &global.params;
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458
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459 if (!config.target_cpu)
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460 {
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461 config.target_cpu = TARGET_PentiumPro;
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462 config.target_scheduler = config.target_cpu;
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463 }
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464 config.fulltypes = CVNONE;
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465 config.inline8087 = 1;
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466 config.memmodel = 0;
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467 config.flags |= CFGuchar; // make sure TYchar is unsigned
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468 version (TARGET_WINDOS) {
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469 if (params.isX86_64)
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470 config.exe = EX_WIN64;
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471 else
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472 config.exe = EX_NT;
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473
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474 // Win32 eh
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475 config.flags2 |= CFG2seh;
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476
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477 if (params.run)
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478 config.wflags |= WFexe; // EXE file only optimizations
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479 else if (params.link && !global.params.deffile)
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480 config.wflags |= WFexe; // EXE file only optimizations
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481 else if (params.exefile) // if writing out EXE file
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482 {
0
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483 size_t len = params.exefile.length;
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484 if (len >= 4 && icmp(params.exefile[len-3..len], "exe") == 0)
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485 config.wflags |= WFexe;
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486 }
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487 config.flags4 |= CFG4underscore;
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488 }
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489 version (TARGET_LINUX) {
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490 if (params.isX86_64)
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491 config.exe = EX_LINUX64;
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492 else
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493 config.exe = EX_LINUX;
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494 config.flags |= CFGnoebp;
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495 config.flags |= CFGalwaysframe;
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496 if (params.pic)
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497 config.flags3 |= CFG3pic;
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498 }
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499 version (TARGET_OSX) {
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500 if (params.isX86_64)
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501 config.exe = EX_OSX64;
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502 else
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503 config.exe = EX_OSX;
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504 config.flags |= CFGnoebp;
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505 config.flags |= CFGalwaysframe;
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506 if (params.pic)
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507 config.flags3 |= CFG3pic;
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508 }
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509 version (TARGET_FREEBSD) {
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510 if (params.isX86_64)
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511 config.exe = EX_FREEBSD64;
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512 else
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513 config.exe = EX_FREEBSD;
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514 config.flags |= CFGnoebp;
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515 config.flags |= CFGalwaysframe;
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516 if (params.pic)
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517 config.flags3 |= CFG3pic;
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518 }
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519 version (TARGET_SOLARIS) {
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520 if (params.isX86_64)
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521 config.exe = EX_SOLARIS64;
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522 else
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523 config.exe = EX_SOLARIS;
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524 config.flags |= CFGnoebp;
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525 config.flags |= CFGalwaysframe;
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526 if (params.pic)
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527 config.flags3 |= CFG3pic;
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528 }
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529 config.flags2 |= CFG2nodeflib; // no default library
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530 config.flags3 |= CFG3eseqds;
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531 static if (false) {
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532 if (env.getEEcontext().EEcompile != 2)
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533 config.flags4 |= CFG4allcomdat;
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534 if (env.nochecks())
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535 config.flags4 |= CFG4nochecks; // no runtime checking
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536 } else version (TARGET_OSX) {
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537 } else {
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538 config.flags4 |= CFG4allcomdat;
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539 }
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540 if (params.trace)
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541 config.flags |= CFGtrace; // turn on profiler
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542 if (params.nofloat)
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543 config.flags3 |= CFG3wkfloat;
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544
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545 configv.verbose = params.verbose;
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546
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547 if (params.optimize)
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548 go_flag(cast(char*)"-o".ptr);
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549
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550 if (params.symdebug)
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551 {
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diff changeset
552 version (ELFOBJ_OR_MACHOBJ) {
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553 configv.addlinenumbers = 1;
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554 config.fulltypes = (params.symdebug == 1) ? CVDWARF_D : CVDWARF_C;
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555 }
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diff changeset
556 version (OMFOBJ) {
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557 configv.addlinenumbers = 1;
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558 config.fulltypes = CV4;
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559 }
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560 if (!params.optimize)
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561 config.flags |= CFGalwaysframe;
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562 }
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563 else
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564 {
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565 configv.addlinenumbers = 0;
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566 config.fulltypes = CVNONE;
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567 //config.flags &= ~CFGalwaysframe;
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568 }
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569
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570 if (params.isX86_64)
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571 {
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572 util_set64();
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573 cod3_set64();
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574 }
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575 else
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576 {
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577 util_set386();
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578 cod3_set386();
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579 }
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580
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581 debug {
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582 debugb = params.debugb;
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583 debugc = params.debugc;
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584 debugf = params.debugf;
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585 debugr = params.debugr;
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586 debugw = params.debugw;
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587 debugx = params.debugx;
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588 debugy = params.debugy;
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589 }
14
2cc604139636 Implemented Linux support for ddmd. Some parts are a bit hacky to just "get it working", that said, druntime and phobos compile, and unittests pass.
Robert Clipsham <robert@octarineparrot.com>
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diff changeset
590 }