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/Support/TargetRegistry.h" 13#include "mcld/Target/ELFEmulation.h" 14 15namespace mcld { 16 17static bool MCLDEmulateMipsELF(LinkerScript& pScript, LinkerConfig& pConfig) { 18 if (!MCLDEmulateELF(pScript, pConfig)) 19 return false; 20 21 // set up bitclass and endian 22 pConfig.targets().setEndian(TargetOptions::Little); 23 24 llvm::Triple::ArchType arch = pConfig.targets().triple().getArch(); 25 assert(arch == llvm::Triple::mipsel || arch == llvm::Triple::mips64el); 26 unsigned bitclass = arch == llvm::Triple::mipsel ? 32 : 64; 27 pConfig.targets().setBitClass(bitclass); 28 29 // set up target-dependent constraints of attributes 30 pConfig.attribute().constraint().enableWholeArchive(); 31 pConfig.attribute().constraint().enableAsNeeded(); 32 pConfig.attribute().constraint().setSharedSystem(); 33 34 // set up the predefined attributes 35 pConfig.attribute().predefined().unsetWholeArchive(); 36 pConfig.attribute().predefined().unsetAsNeeded(); 37 pConfig.attribute().predefined().setDynamic(); 38 return true; 39} 40 41//===----------------------------------------------------------------------===// 42// emulateMipsLD - the help function to emulate Mips ld 43//===----------------------------------------------------------------------===// 44bool emulateMipsLD(LinkerScript& pScript, LinkerConfig& pConfig) { 45 if (pConfig.targets().triple().isOSDarwin()) { 46 assert(0 && "MachO linker has not supported yet"); 47 return false; 48 } 49 if (pConfig.targets().triple().isOSWindows()) { 50 assert(0 && "COFF linker has not supported yet"); 51 return false; 52 } 53 54 return MCLDEmulateMipsELF(pScript, pConfig); 55} 56 57} // namespace mcld 58 59//===----------------------------------------------------------------------===// 60// MipsEmulation 61//===----------------------------------------------------------------------===// 62extern "C" void MCLDInitializeMipsEmulation() { 63 mcld::TargetRegistry::RegisterEmulation(mcld::TheMipselTarget, 64 mcld::emulateMipsLD); 65 mcld::TargetRegistry::RegisterEmulation(mcld::TheMips64elTarget, 66 mcld::emulateMipsLD); 67} 68