1 | /* |
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2 | * Copyright (c) 2011, Chris Johns <chrisj@rtems.org> |
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3 | * |
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4 | * Permission to use, copy, modify, and/or distribute this software for any |
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5 | * purpose with or without fee is hereby granted, provided that the above |
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6 | * copyright notice and this permission notice appear in all copies. |
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7 | * |
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8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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15 | */ |
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16 | /** |
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17 | * @file |
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18 | * |
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19 | * @ingroup rtems_ld |
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20 | * |
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21 | * @brief RTEMS Linker. |
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22 | * |
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23 | */ |
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24 | |
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25 | #if HAVE_CONFIG_H |
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26 | #include "config.h" |
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27 | #endif |
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28 | |
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29 | #include <fstream> |
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30 | #include <iostream> |
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31 | |
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32 | #include <errno.h> |
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33 | #include <string.h> |
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34 | |
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35 | #include <rld.h> |
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36 | #include <rld-rap.h> |
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37 | |
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38 | #include <sys/types.h> |
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39 | #include <sys/stat.h> |
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40 | #include <unistd.h> |
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41 | #include "rld-process.h" |
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42 | |
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43 | namespace rld |
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44 | { |
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45 | namespace outputter |
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46 | { |
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47 | int unlink (const char* path) |
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48 | { |
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49 | #if _WIN32 |
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50 | return ::remove(path); |
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51 | #else |
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52 | return ::unlink (path); |
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53 | #endif |
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54 | } |
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55 | |
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56 | int link (const char* path1, const char* path2) |
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57 | { |
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58 | #if _WIN32 |
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59 | return ::rename(path1, path2); |
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60 | #else |
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61 | return ::link (path1, path2); |
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62 | #endif |
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63 | } |
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64 | |
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65 | const std::string |
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66 | script_text (const std::string& entry, |
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67 | const std::string& exit, |
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68 | const files::object_list& dependents, |
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69 | const files::cache& cache, |
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70 | bool not_in_archive) |
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71 | { |
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72 | std::ostringstream out; |
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73 | files::object_list objects; |
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74 | files::object_list dep_copy (dependents); |
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75 | |
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76 | cache.get_objects (objects); |
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77 | objects.merge (dep_copy); |
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78 | objects.unique (); |
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79 | |
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80 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
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81 | std::cout << " E: " << entry << std::endl; |
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82 | |
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83 | out << "E: " << entry << std::endl; |
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84 | |
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85 | if (!exit.empty ()) |
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86 | { |
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87 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
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88 | std::cout << " e: " << exit << std::endl; |
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89 | out << "e: " << exit << std::endl; |
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90 | } |
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91 | |
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92 | for (files::object_list::iterator oi = objects.begin (); |
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93 | oi != objects.end (); |
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94 | ++oi) |
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95 | { |
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96 | files::object& obj = *(*oi); |
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97 | std::string name = obj.name ().basename (); |
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98 | |
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99 | if (not_in_archive) |
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100 | { |
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101 | size_t pos = name.find (':'); |
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102 | if (pos != std::string::npos) |
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103 | name[pos] = '_'; |
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104 | pos = name.find ('@'); |
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105 | if (pos != std::string::npos) |
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106 | name = name.substr (0, pos); |
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107 | } |
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108 | |
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109 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
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110 | std::cout << " o: " << name << std::endl; |
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111 | |
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112 | out << "o:" << name << std::endl; |
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113 | |
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114 | symbols::symtab& unresolved = obj.unresolved_symbols (); |
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115 | |
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116 | int count = 0; |
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117 | for (symbols::symtab::iterator ursi = unresolved.begin (); |
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118 | ursi != unresolved.begin (); |
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119 | ++ursi) |
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120 | { |
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121 | symbols::symbol& urs = *((*ursi).second); |
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122 | |
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123 | ++count; |
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124 | |
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125 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
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126 | std::cout << " u: " << count << ':' << urs.name () << std::endl; |
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127 | |
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128 | out << " u:" << count << ':' << urs.name () << std::endl; |
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129 | } |
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130 | } |
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131 | |
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132 | return out.str (); |
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133 | } |
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134 | |
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135 | void |
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136 | metadata_object (files::object& metadata, |
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137 | const std::string& entry, |
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138 | const std::string& exit, |
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139 | const files::object_list& dependents, |
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140 | const files::cache& cache) |
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141 | { |
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142 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
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143 | std::cout << "metadata: " << metadata.name ().full () << std::endl; |
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144 | |
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145 | const std::string script = |
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146 | script_text (entry, exit, dependents, cache, true); |
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147 | |
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148 | metadata.open (true); |
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149 | metadata.begin (); |
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150 | |
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151 | elf::file& elf = metadata.elf (); |
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152 | |
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153 | elf.set_header (ET_EXEC, |
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154 | elf::object_class (), |
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155 | elf::object_datatype (), |
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156 | elf::object_machine_type ()); |
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157 | |
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158 | elf::section md (elf, |
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159 | elf.section_count () + 1, |
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160 | ".rtemsmd", |
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161 | SHT_STRTAB, |
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162 | 1, |
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163 | 0, |
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164 | 0, |
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165 | 0, |
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166 | script.length ()); |
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167 | |
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168 | md.add_data (ELF_T_BYTE, |
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169 | 1, |
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170 | script.length (), |
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171 | (void*) script.c_str ()); |
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172 | |
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173 | elf.add (md); |
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174 | elf.write (); |
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175 | |
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176 | metadata.end (); |
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177 | metadata.close (); |
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178 | } |
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179 | |
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180 | void |
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181 | archive (const std::string& name, |
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182 | const std::string& entry, |
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183 | const std::string& exit, |
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184 | const files::object_list& dependents, |
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185 | const files::cache& cache) |
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186 | { |
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187 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
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188 | std::cout << "outputter:archive: " << name |
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189 | << ", dependents: " << dependents.size () << std::endl; |
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190 | |
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191 | std::string ext = files::extension (name); |
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192 | std::string mdname = |
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193 | name.substr (0, name.length () - ext.length ()) + "-metadata.o"; |
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194 | |
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195 | files::object metadata (mdname); |
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196 | |
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197 | metadata_object (metadata, entry, exit, dependents, cache); |
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198 | |
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199 | files::object_list dep_copy (dependents); |
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200 | files::object_list objects; |
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201 | |
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202 | cache.get_objects (objects); |
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203 | objects.merge (dep_copy); |
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204 | objects.push_front (&metadata); |
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205 | objects.unique (); |
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206 | |
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207 | files::archive arch (name); |
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208 | arch.create (objects); |
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209 | } |
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210 | |
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211 | void |
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212 | archivera (const std::string& name, |
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213 | const files::object_list& dependents, |
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214 | files::cache& cache, |
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215 | bool ra_exist, |
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216 | bool ra_rap) |
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217 | { |
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218 | files::object_list dep_copy (dependents); |
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219 | files::object_list objects; |
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220 | |
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221 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
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222 | std::cout << "outputter:archivera: " << name |
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223 | << ", dependents: " << dependents.size () << std::endl; |
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224 | |
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225 | objects.clear (); |
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226 | |
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227 | files::object_list::iterator oli; |
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228 | for (oli = dep_copy.begin (); oli != dep_copy.end (); ++oli) |
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229 | { |
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230 | files::object& object = *(*oli); |
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231 | |
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232 | if (ra_rap) |
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233 | objects.push_back (&object); |
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234 | else |
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235 | { |
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236 | if (object.get_archive ()) |
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237 | objects.push_back (&object); |
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238 | } |
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239 | } |
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240 | |
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241 | bool exist = false; |
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242 | files::object_list objects_tmp; |
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243 | files::objects& objs = cache.get_objects (); |
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244 | objects_tmp.clear (); |
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245 | for (files::objects::iterator obi = objs.begin (); |
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246 | obi != objs.end (); |
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247 | ++obi) |
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248 | { |
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249 | files::object* obj = (*obi).second; |
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250 | exist = false; |
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251 | |
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252 | /** |
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253 | * Replace the elf object file in ra file with elf object file |
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254 | * in collected object files, if exist. |
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255 | */ |
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256 | if (!ra_rap) |
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257 | { |
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258 | for (oli = objects.begin (); oli != objects.end (); ++oli) |
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259 | { |
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260 | files::object& object = *(*oli); |
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261 | if (obj->name ().oname () == object.name ().oname ()) |
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262 | { |
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263 | exist = true; |
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264 | break; |
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265 | } |
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266 | } |
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267 | } |
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268 | |
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269 | if (!exist) |
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270 | objects_tmp.push_back (obj); |
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271 | } |
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272 | |
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273 | objects.merge (objects_tmp); |
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274 | objects.unique (); |
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275 | |
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276 | if (objects.size ()) |
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277 | { |
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278 | if (ra_exist) |
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279 | { |
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280 | std::string new_name = "rld_XXXXXX"; |
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281 | files::archive arch (new_name); |
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282 | struct stat sb; |
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283 | |
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284 | arch.create (objects); |
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285 | |
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286 | if ((::stat (name.c_str (), &sb) >= 0) && S_ISREG (sb.st_mode)) |
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287 | { |
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288 | if (unlink (name.c_str ()) < 0) |
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289 | std::cerr << "error: unlinking temp file: " << name << std::endl; |
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290 | } |
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291 | if (link (new_name.c_str (), name.c_str ()) < 0) |
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292 | { |
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293 | std::cerr << "error: linking temp file: " << name << std::endl; |
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294 | } |
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295 | if ((::stat (new_name.c_str (), &sb) >= 0) && S_ISREG (sb.st_mode)) |
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296 | { |
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297 | if (unlink (new_name.c_str ()) < 0) |
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298 | std::cerr << "error: unlinking temp file: " << new_name << std::endl; |
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299 | } |
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300 | } |
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301 | else |
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302 | { |
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303 | /* Create */ |
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304 | files::archive arch (name); |
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305 | arch.create (objects); |
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306 | } |
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307 | } |
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308 | } |
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309 | |
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310 | void |
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311 | script (const std::string& name, |
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312 | const std::string& entry, |
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313 | const std::string& exit, |
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314 | const files::object_list& dependents, |
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315 | const files::cache& cache) |
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316 | { |
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317 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
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318 | std::cout << "outputter:script: " << name << std::endl; |
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319 | |
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320 | std::fstream out (name.c_str (), |
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321 | std::ios_base::out | std::ios_base::trunc); |
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322 | |
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323 | /* |
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324 | * Tag for the shell to use. |
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325 | */ |
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326 | out << "!# rls" << std::endl; |
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327 | |
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328 | try |
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329 | { |
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330 | out << script_text (entry, exit, dependents, cache, false); |
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331 | } |
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332 | catch (...) |
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333 | { |
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334 | out.close (); |
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335 | throw; |
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336 | } |
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337 | |
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338 | out.close (); |
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339 | } |
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340 | |
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341 | void |
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342 | elf_application (const std::string& name, |
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343 | const std::string& entry, |
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344 | const std::string& exit, |
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345 | const files::object_list& dependents, |
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346 | const files::cache& cache) |
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347 | { |
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348 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
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349 | std::cout << "outputter:application: " << name << std::endl; |
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350 | |
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351 | files::object_list dep_copy (dependents); |
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352 | files::object_list objects; |
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353 | std::string header; |
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354 | std::string script; |
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355 | files::image app (name); |
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356 | |
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357 | header = "RELF,00000000,0001,none,00000000\n"; |
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358 | header += '\0'; |
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359 | |
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360 | script = script_text (entry, exit, dependents, cache, true); |
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361 | |
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362 | cache.get_objects (objects); |
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363 | objects.merge (dep_copy); |
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364 | objects.unique (); |
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365 | |
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366 | app.open (true); |
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367 | app.write (header.c_str (), header.size ()); |
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368 | |
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369 | #define APP_BUFFER_SIZE (128 * 1024) |
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370 | |
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371 | uint8_t* buffer = 0; |
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372 | |
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373 | try |
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374 | { |
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375 | buffer = new uint8_t[APP_BUFFER_SIZE]; |
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376 | |
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377 | for (files::object_list::iterator oi = objects.begin (); |
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378 | oi != objects.end (); |
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379 | ++oi) |
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380 | { |
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381 | files::object& obj = *(*oi); |
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382 | |
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383 | obj.open (); |
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384 | |
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385 | try |
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386 | { |
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387 | obj.seek (0); |
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388 | |
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389 | size_t in_size = obj.name ().size (); |
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390 | |
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391 | while (in_size) |
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392 | { |
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393 | size_t reading = |
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394 | in_size < APP_BUFFER_SIZE ? in_size : APP_BUFFER_SIZE; |
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395 | |
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396 | app.write (buffer, obj.read (buffer, reading)); |
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397 | |
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398 | in_size -= reading; |
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399 | } |
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400 | } |
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401 | catch (...) |
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402 | { |
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403 | obj.close (); |
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404 | throw; |
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405 | } |
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406 | |
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407 | obj.close (); |
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408 | } |
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409 | } |
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410 | catch (...) |
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411 | { |
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412 | delete [] buffer; |
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413 | app.close (); |
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414 | throw; |
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415 | } |
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416 | |
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417 | delete [] buffer; |
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418 | |
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419 | app.close (); |
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420 | } |
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421 | |
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422 | bool in_archive (files::object* object) |
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423 | { |
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424 | if (object->get_archive ()) |
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425 | return true; |
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426 | return false; |
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427 | } |
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428 | |
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429 | void |
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430 | application (const std::string& name, |
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431 | const std::string& entry, |
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432 | const std::string& exit, |
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433 | const files::object_list& dependents, |
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434 | const files::cache& cache, |
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435 | const symbols::table& symbols, |
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436 | bool one_file) |
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437 | { |
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438 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
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439 | std::cout << "outputter:application: " << name << std::endl; |
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440 | |
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441 | files::object_list dep_copy (dependents); |
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442 | files::object_list objects; |
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443 | files::image app (name); |
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444 | |
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445 | if (!one_file) |
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446 | dep_copy.remove_if (in_archive); |
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447 | |
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448 | cache.get_objects (objects); |
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449 | objects.merge (dep_copy); |
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450 | objects.sort (); |
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451 | objects.unique (); |
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452 | |
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453 | app.open (true); |
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454 | |
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455 | try |
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456 | { |
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457 | rap::write (app, entry, exit, objects, symbols); |
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458 | } |
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459 | catch (...) |
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460 | { |
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461 | app.close (); |
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462 | throw; |
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463 | } |
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464 | |
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465 | app.close (); |
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466 | } |
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467 | |
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468 | } |
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469 | } |
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