1 //===- ARMEmulation.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 #include "ARM.h" 10 #include <mcld/LinkerConfig.h> 11 #include <mcld/LinkerScript.h> 12 #include <mcld/Target/ELFEmulation.h> 13 #include <mcld/Support/TargetRegistry.h> 14 15 namespace mcld { 16 17 static bool MCLDEmulateARMELF(LinkerScript& pScript, LinkerConfig& pConfig) 18 { 19 if (!MCLDEmulateELF(pScript, pConfig)) 20 return false; 21 22 // set up bitclass and endian 23 pConfig.targets().setEndian(TargetOptions::Little); 24 pConfig.targets().setBitClass(32); 25 26 // set up target-dependent constraints of attributes 27 pConfig.attribute().constraint().enableWholeArchive(); 28 pConfig.attribute().constraint().enableAsNeeded(); 29 pConfig.attribute().constraint().setSharedSystem(); 30 31 // set up the predefined attributes 32 pConfig.attribute().predefined().unsetWholeArchive(); 33 pConfig.attribute().predefined().unsetAsNeeded(); 34 pConfig.attribute().predefined().setDynamic(); 35 36 // set up section map 37 if (pConfig.codeGenType() != LinkerConfig::Object) { 38 bool exist = false; 39 pScript.sectionMap().append(".ARM.exidx", ".ARM.exidx", exist); 40 pScript.sectionMap().append(".ARM.extab", ".ARM.extab", exist); 41 pScript.sectionMap().append(".ARM.attributes", ".ARM.attributes", exist); 42 } 43 return true; 44 } 45 46 //===----------------------------------------------------------------------===// 47 // emulateARMLD - the help function to emulate ARM ld 48 //===----------------------------------------------------------------------===// 49 bool emulateARMLD(LinkerScript& pScript, LinkerConfig& pConfig) 50 { 51 if (pConfig.targets().triple().isOSDarwin()) { 52 assert(0 && "MachO linker has not supported yet"); 53 return false; 54 } 55 if (pConfig.targets().triple().isOSWindows()) { 56 assert(0 && "COFF linker has not supported yet"); 57 return false; 58 } 59 60 return MCLDEmulateARMELF(pScript, pConfig); 61 } 62 63 } // namespace of mcld 64 65 //===----------------------------------------------------------------------===// 66 // ARMEmulation 67 //===----------------------------------------------------------------------===// 68 extern "C" void MCLDInitializeARMEmulation() { 69 // Register the emulation 70 mcld::TargetRegistry::RegisterEmulation(mcld::TheARMTarget, mcld::emulateARMLD); 71 mcld::TargetRegistry::RegisterEmulation(mcld::TheThumbTarget, mcld::emulateARMLD); 72 } 73 74
