1affc150dc44fab1911775a49636d0ce85333b634Zonr Chang//===- NamePool.cpp -------------------------------------------------------===// 25460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao// 35460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao// The MCLinker Project 45460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao// 55460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao// This file is distributed under the University of Illinois Open Source 65460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao// License. See LICENSE.TXT for details. 75460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao// 85460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao//===----------------------------------------------------------------------===// 937b74a387bb3993387029859c2d9d051c41c724eStephen Hines#include "mcld/LD/NamePool.h" 1037b74a387bb3993387029859c2d9d051c41c724eStephen Hines 1137b74a387bb3993387029859c2d9d051c41c724eStephen Hines#include "mcld/LD/StaticResolver.h" 1237b74a387bb3993387029859c2d9d051c41c724eStephen Hines 135460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao#include <llvm/Support/raw_ostream.h> 145460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 1537b74a387bb3993387029859c2d9d051c41c724eStephen Hinesnamespace mcld { 165460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 1722add6ff3426df1a85089fe6a6e1597ee3b6f300Shih-wei Liao//===----------------------------------------------------------------------===// 18affc150dc44fab1911775a49636d0ce85333b634Zonr Chang// NamePool 1922add6ff3426df1a85089fe6a6e1597ee3b6f300Shih-wei Liao//===----------------------------------------------------------------------===// 2022add6ff3426df1a85089fe6a6e1597ee3b6f300Shih-wei LiaoNamePool::NamePool(NamePool::size_type pSize) 2137b74a387bb3993387029859c2d9d051c41c724eStephen Hines : m_pResolver(new StaticResolver()), m_Table(pSize) { 225460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao} 235460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 2437b74a387bb3993387029859c2d9d051c41c724eStephen HinesNamePool::~NamePool() { 2522add6ff3426df1a85089fe6a6e1597ee3b6f300Shih-wei Liao delete m_pResolver; 266f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 276f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines FreeInfoSet::iterator info, iEnd = m_FreeInfoSet.end(); 286f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines for (info = m_FreeInfoSet.begin(); info != iEnd; ++info) { 296f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines ResolveInfo::Destroy(*info); 306f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines } 315460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao} 325460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 335460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao/// createSymbol - create a symbol 34affc150dc44fab1911775a49636d0ce85333b634Zonr ChangResolveInfo* NamePool::createSymbol(const llvm::StringRef& pName, 3522add6ff3426df1a85089fe6a6e1597ee3b6f300Shih-wei Liao bool pIsDyn, 3622add6ff3426df1a85089fe6a6e1597ee3b6f300Shih-wei Liao ResolveInfo::Type pType, 3722add6ff3426df1a85089fe6a6e1597ee3b6f300Shih-wei Liao ResolveInfo::Desc pDesc, 3822add6ff3426df1a85089fe6a6e1597ee3b6f300Shih-wei Liao ResolveInfo::Binding pBinding, 3922add6ff3426df1a85089fe6a6e1597ee3b6f300Shih-wei Liao ResolveInfo::SizeType pSize, 4037b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo::Visibility pVisibility) { 416f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines ResolveInfo** result = m_FreeInfoSet.allocate(); 426f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines (*result) = ResolveInfo::Create(pName); 436f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines (*result)->setIsSymbol(true); 446f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines (*result)->setSource(pIsDyn); 456f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines (*result)->setType(pType); 466f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines (*result)->setDesc(pDesc); 476f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines (*result)->setBinding(pBinding); 486f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines (*result)->setVisibility(pVisibility); 496f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines (*result)->setSize(pSize); 506f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines return *result; 515460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao} 525460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 535460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao/// insertSymbol - insert a symbol and resolve it immediately 545460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao/// @return the pointer of resolved ResolveInfo 555460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao/// @return is the symbol existent? 56affc150dc44fab1911775a49636d0ce85333b634Zonr Changvoid NamePool::insertSymbol(const llvm::StringRef& pName, 5737b74a387bb3993387029859c2d9d051c41c724eStephen Hines bool pIsDyn, 5837b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo::Type pType, 5937b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo::Desc pDesc, 6037b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo::Binding pBinding, 6137b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo::SizeType pSize, 6237b74a387bb3993387029859c2d9d051c41c724eStephen Hines LDSymbol::ValueType pValue, 6337b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo::Visibility pVisibility, 6437b74a387bb3993387029859c2d9d051c41c724eStephen Hines ResolveInfo* pOldInfo, 6537b74a387bb3993387029859c2d9d051c41c724eStephen Hines Resolver::Result& pResult) { 665460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao // We should check if there is any symbol with the same name existed. 675460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao // If it already exists, we should use resolver to decide which symbol 685460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao // should be reserved. Otherwise, we insert the symbol and set up its 695460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao // attributes. 705460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao bool exist = false; 715460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao ResolveInfo* old_symbol = m_Table.insert(pName, exist); 725460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao ResolveInfo* new_symbol = NULL; 735460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao if (exist && old_symbol->isSymbol()) { 745460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao new_symbol = m_Table.getEntryFactory().produce(pName); 7537b74a387bb3993387029859c2d9d051c41c724eStephen Hines } else { 765460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao exist = false; 775460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao new_symbol = old_symbol; 785460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao } 795460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 805460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao new_symbol->setIsSymbol(true); 815460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao new_symbol->setSource(pIsDyn); 825460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao new_symbol->setType(pType); 835460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao new_symbol->setDesc(pDesc); 845460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao new_symbol->setBinding(pBinding); 855460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao new_symbol->setVisibility(pVisibility); 865460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao new_symbol->setSize(pSize); 875460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 885460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao if (!exist) { 896f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines // old_symbol is neither existed nor a symbol. 9037b74a387bb3993387029859c2d9d051c41c724eStephen Hines pResult.info = new_symbol; 9137b74a387bb3993387029859c2d9d051c41c724eStephen Hines pResult.existent = false; 925460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao pResult.overriden = true; 935460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao return; 9437b74a387bb3993387029859c2d9d051c41c724eStephen Hines } else if (pOldInfo != NULL) { 955460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao // existent, remember its attribute 965460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao pOldInfo->override(*old_symbol); 975460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao } 985460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 99d0fbbb227051be16931a1aa9b4a7722ac039c698Shih-wei Liao // exist and is a symbol 1005460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao // symbol resolution 1015460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao bool override = false; 1025460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao unsigned int action = Resolver::LastAction; 103f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines if (m_pResolver->resolve(*old_symbol, *new_symbol, override, pValue)) { 10437b74a387bb3993387029859c2d9d051c41c724eStephen Hines pResult.info = old_symbol; 10537b74a387bb3993387029859c2d9d051c41c724eStephen Hines pResult.existent = true; 106affc150dc44fab1911775a49636d0ce85333b634Zonr Chang pResult.overriden = override; 10737b74a387bb3993387029859c2d9d051c41c724eStephen Hines } else { 10837b74a387bb3993387029859c2d9d051c41c724eStephen Hines m_pResolver->resolveAgain(*this, action, *old_symbol, *new_symbol, pResult); 1096f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines } 1106f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines 1116f75755c9204b1d8817ae5a65a2f7e5af0ec3f70Stephen Hines m_Table.getEntryFactory().destroy(new_symbol); 1125460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao return; 1135460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao} 1145460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 11537b74a387bb3993387029859c2d9d051c41c724eStephen Hinesllvm::StringRef NamePool::insertString(const llvm::StringRef& pString) { 1165460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao bool exist = false; 1175460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao ResolveInfo* resolve_info = m_Table.insert(pString, exist); 1185460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao return llvm::StringRef(resolve_info->name(), resolve_info->nameSize()); 1195460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao} 1205460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 12137b74a387bb3993387029859c2d9d051c41c724eStephen Hinesvoid NamePool::reserve(NamePool::size_type pSize) { 1225460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao m_Table.rehash(pSize); 1235460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao} 1245460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 12537b74a387bb3993387029859c2d9d051c41c724eStephen HinesNamePool::size_type NamePool::capacity() const { 1265460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao return (m_Table.numOfBuckets() - m_Table.numOfEntries()); 1275460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao} 1285460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 1295460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao/// findInfo - find the resolved ResolveInfo 13037b74a387bb3993387029859c2d9d051c41c724eStephen HinesResolveInfo* NamePool::findInfo(const llvm::StringRef& pName) { 1315460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao Table::iterator iter = m_Table.find(pName); 1325460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao return iter.getEntry(); 1335460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao} 1345460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 1355460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao/// findInfo - find the resolved ResolveInfo 13637b74a387bb3993387029859c2d9d051c41c724eStephen Hinesconst ResolveInfo* NamePool::findInfo(const llvm::StringRef& pName) const { 1375460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao Table::const_iterator iter = m_Table.find(pName); 1385460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao return iter.getEntry(); 1395460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao} 1405460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 1415460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao/// findSymbol - find the resolved output LDSymbol 14237b74a387bb3993387029859c2d9d051c41c724eStephen HinesLDSymbol* NamePool::findSymbol(const llvm::StringRef& pName) { 1435460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao ResolveInfo* info = findInfo(pName); 14437b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (info == NULL) 1455460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao return NULL; 1465460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao return info->outSymbol(); 1475460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao} 1485460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 1495460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao/// findSymbol - find the resolved output LDSymbol 15037b74a387bb3993387029859c2d9d051c41c724eStephen Hinesconst LDSymbol* NamePool::findSymbol(const llvm::StringRef& pName) const { 1515460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao const ResolveInfo* info = findInfo(pName); 15237b74a387bb3993387029859c2d9d051c41c724eStephen Hines if (info == NULL) 1535460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao return NULL; 1545460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao return info->outSymbol(); 1555460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao} 1565460a1f25d9ddecb5c70667267d66d51af177a99Shih-wei Liao 15737b74a387bb3993387029859c2d9d051c41c724eStephen Hines} // namespace mcld 158