1//===- MipsEmulation.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 "Mips.h" 10#include <mcld/LinkerScript.h> 11#include <mcld/LinkerConfig.h> 12#include <mcld/Target/ELFEmulation.h> 13#include <mcld/Support/TargetRegistry.h> 14 15namespace mcld { 16 17static bool MCLDEmulateMipsELF(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 25 llvm::Triple::ArchType arch = pConfig.targets().triple().getArch(); 26 assert(arch == llvm::Triple::mipsel || arch == llvm::Triple::mips64el); 27 unsigned bitclass = arch == llvm::Triple::mipsel ? 32 : 64; 28 pConfig.targets().setBitClass(bitclass); 29 30 // set up target-dependent constraints of attributes 31 pConfig.attribute().constraint().enableWholeArchive(); 32 pConfig.attribute().constraint().enableAsNeeded(); 33 pConfig.attribute().constraint().setSharedSystem(); 34 35 // set up the predefined attributes 36 pConfig.attribute().predefined().unsetWholeArchive(); 37 pConfig.attribute().predefined().unsetAsNeeded(); 38 pConfig.attribute().predefined().setDynamic(); 39 return true; 40} 41 42//===----------------------------------------------------------------------===// 43// emulateMipsLD - the help function to emulate Mips ld 44//===----------------------------------------------------------------------===// 45bool emulateMipsLD(LinkerScript& pScript, LinkerConfig& pConfig) 46{ 47 if (pConfig.targets().triple().isOSDarwin()) { 48 assert(0 && "MachO linker has not supported yet"); 49 return false; 50 } 51 if (pConfig.targets().triple().isOSWindows()) { 52 assert(0 && "COFF linker has not supported yet"); 53 return false; 54 } 55 56 return MCLDEmulateMipsELF(pScript, pConfig); 57} 58 59} // namespace of mcld 60 61//===----------------------------------------------------------------------===// 62// MipsEmulation 63//===----------------------------------------------------------------------===// 64extern "C" void MCLDInitializeMipsEmulation() { 65 mcld::TargetRegistry::RegisterEmulation(mcld::TheMipselTarget, 66 mcld::emulateMipsLD); 67 mcld::TargetRegistry::RegisterEmulation(mcld::TheMips64elTarget, 68 mcld::emulateMipsLD); 69} 70