1 //===- TargetLinkerConfigs.cpp --------------------------------------------===// 2 // 3 // The MCLinker Project 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "alone/Config/Config.h" 11 #include "alone/Support/TargetLinkerConfigs.h" 12 13 #include <mcld/TargetOptions.h> 14 #include <mcld/MC/InputFactory.h> 15 #include <mcld/Fragment/Relocation.h> 16 17 using namespace alone; 18 19 #ifdef TARGET_BUILD 20 static const char* gDefaultDyld = "/system/bin/linker"; 21 static const char* gDefaultSysroot = "/system"; 22 #else 23 static const char* gDefaultDyld = "/usr/lib/ld.so.1"; 24 static const char* gDefaultSysroot = "/"; 25 #endif 26 27 //===----------------------------------------------------------------------===// 28 // ARM 29 //===----------------------------------------------------------------------===// 30 #if defined(PROVIDE_ARM_CODEGEN) 31 ARMLinkerConfig::ARMLinkerConfig() : LinkerConfig(DEFAULT_ARM_TRIPLE_STRING) { 32 33 // set up target-dependent options 34 getLDConfig()->targets().setEndian(mcld::TargetOptions::Little); 35 getLDConfig()->targets().setBitClass(32); 36 37 // set up target-dependent constraints of attributes 38 getLDConfig()->attribute().constraint().enableWholeArchive(); 39 getLDConfig()->attribute().constraint().disableAsNeeded(); 40 getLDConfig()->attribute().constraint().setSharedSystem(); 41 42 // set up the predefined attributes 43 getLDConfig()->attribute().predefined().unsetWholeArchive(); 44 getLDConfig()->attribute().predefined().setDynamic(); 45 46 // set up target dependent options 47 if (getLDScript()->sysroot().empty()) { 48 getLDScript()->setSysroot(gDefaultSysroot); 49 } 50 51 if (!getLDConfig()->options().hasDyld()) { 52 getLDConfig()->options().setDyld(gDefaultDyld); 53 } 54 55 // set up section map 56 if (getLDConfig()->codeGenType() != mcld::LinkerConfig::Object) { 57 bool exist = false; 58 getLDScript()->sectionMap().append(".ARM.exidx", ".ARM.exidx", exist); 59 getLDScript()->sectionMap().append(".ARM.extab", ".ARM.extab", exist); 60 getLDScript()->sectionMap().append(".ARM.attributes", ".ARM.attributes", exist); 61 } 62 63 // set up relocation factory 64 mcld::Relocation::SetUp(*getLDConfig()); 65 } 66 #endif // defined(PROVIDE_ARM_CODEGEN) 67 68 //===----------------------------------------------------------------------===// 69 // Mips 70 //===----------------------------------------------------------------------===// 71 #if defined(PROVIDE_MIPS_CODEGEN) 72 MipsLinkerConfig::MipsLinkerConfig() 73 : LinkerConfig(DEFAULT_MIPS_TRIPLE_STRING) { 74 75 // set up target-dependent options 76 getLDConfig()->targets().setEndian(mcld::TargetOptions::Little); 77 getLDConfig()->targets().setBitClass(32); 78 79 // set up target-dependent constraints of attibutes 80 getLDConfig()->attribute().constraint().enableWholeArchive(); 81 getLDConfig()->attribute().constraint().disableAsNeeded(); 82 getLDConfig()->attribute().constraint().setSharedSystem(); 83 84 // set up the predefined attributes 85 getLDConfig()->attribute().predefined().unsetWholeArchive(); 86 getLDConfig()->attribute().predefined().setDynamic(); 87 88 // set up target dependent options 89 if (getLDScript()->sysroot().empty()) { 90 getLDScript()->setSysroot(gDefaultSysroot); 91 } 92 93 if (!getLDConfig()->options().hasDyld()) { 94 getLDConfig()->options().setDyld(gDefaultDyld); 95 } 96 97 // set up relocation factory 98 mcld::Relocation::SetUp(*getLDConfig()); 99 } 100 #endif // defined(PROVIDE_MIPS_CODEGEN) 101 102 //===----------------------------------------------------------------------===// 103 // X86 and X86_64 104 //===----------------------------------------------------------------------===// 105 #if defined(PROVIDE_X86_CODEGEN) 106 X86FamilyLinkerConfigBase::X86FamilyLinkerConfigBase(const std::string& pTriple) 107 : LinkerConfig(pTriple) { 108 // set up target-dependent options 109 getLDConfig()->targets().setEndian(mcld::TargetOptions::Little); 110 getLDConfig()->targets().setBitClass(32); 111 112 // set up target-dependent constraints of attibutes 113 getLDConfig()->attribute().constraint().enableWholeArchive(); 114 getLDConfig()->attribute().constraint().disableAsNeeded(); 115 getLDConfig()->attribute().constraint().setSharedSystem(); 116 117 // set up the predefined attributes 118 getLDConfig()->attribute().predefined().unsetWholeArchive(); 119 getLDConfig()->attribute().predefined().setDynamic(); 120 121 // set up target dependent options 122 if (getLDScript()->sysroot().empty()) { 123 getLDScript()->setSysroot(gDefaultSysroot); 124 } 125 126 if (!getLDConfig()->options().hasDyld()) { 127 getLDConfig()->options().setDyld(gDefaultDyld); 128 } 129 130 // set up relocation factory 131 mcld::Relocation::SetUp(*getLDConfig()); 132 } 133 134 X86_32LinkerConfig::X86_32LinkerConfig() 135 : X86FamilyLinkerConfigBase(DEFAULT_X86_TRIPLE_STRING) { 136 } 137 138 X86_64LinkerConfig::X86_64LinkerConfig() 139 : X86FamilyLinkerConfigBase(DEFAULT_X86_64_TRIPLE_STRING) { 140 } 141 #endif // defined(PROVIDE_X86_CODEGEN) 142 143 #if !defined(TARGET_BUILD) 144 //===----------------------------------------------------------------------===// 145 // General 146 //===----------------------------------------------------------------------===// 147 GeneralLinkerConfig::GeneralLinkerConfig(const std::string& pTriple) 148 : LinkerConfig(pTriple) { 149 150 // set up target-dependent options 151 getLDConfig()->targets().setEndian(mcld::TargetOptions::Little); 152 getLDConfig()->targets().setBitClass(32); 153 154 // set up target-dependent constraints of attributes 155 getLDConfig()->attribute().constraint().enableWholeArchive(); 156 getLDConfig()->attribute().constraint().disableAsNeeded(); 157 getLDConfig()->attribute().constraint().setSharedSystem(); 158 159 // set up the predefined attributes 160 getLDConfig()->attribute().predefined().unsetWholeArchive(); 161 getLDConfig()->attribute().predefined().setDynamic(); 162 163 // set up section map 164 if (llvm::Triple::arm == getLDConfig()->targets().triple().getArch() && 165 getLDConfig()->codeGenType() != mcld::LinkerConfig::Object) { 166 bool exist = false; 167 getLDScript()->sectionMap().append(".ARM.exidx", ".ARM.exidx", exist); 168 getLDScript()->sectionMap().append(".ARM.extab", ".ARM.extab", exist); 169 getLDScript()->sectionMap().append(".ARM.attributes", ".ARM.attributes", exist); 170 } 171 172 // set up relocation factory 173 mcld::Relocation::SetUp(*getLDConfig()); 174 } 175 #endif // defined(TARGET_BUILD) 176
