X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FMC%2FMCContext.cpp;h=6e4d82b6e7650b73dffe78c9162ff8fbe60cf0f1;hb=d6f0c34273dd3536102f2d643403252468dfc4a3;hp=477bd17c0d57c62e12e28b46dbe514f77e1bde3e;hpb=f145c135f3a28e2c59bd02e475fbf09f4157c9fb;p=oota-llvm.git diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp index 477bd17c0d5..6e4d82b6e76 100644 --- a/lib/MC/MCContext.cpp +++ b/lib/MC/MCContext.cpp @@ -8,21 +8,23 @@ //===----------------------------------------------------------------------===// #include "llvm/MC/MCContext.h" +#include "llvm/ADT/SmallString.h" +#include "llvm/ADT/Twine.h" #include "llvm/MC/MCAsmInfo.h" +#include "llvm/MC/MCDwarf.h" +#include "llvm/MC/MCLabel.h" #include "llvm/MC/MCObjectFileInfo.h" #include "llvm/MC/MCRegisterInfo.h" -#include "llvm/MC/MCSectionMachO.h" -#include "llvm/MC/MCSectionELF.h" #include "llvm/MC/MCSectionCOFF.h" +#include "llvm/MC/MCSectionELF.h" +#include "llvm/MC/MCSectionMachO.h" #include "llvm/MC/MCSymbol.h" -#include "llvm/MC/MCLabel.h" -#include "llvm/MC/MCDwarf.h" -#include "llvm/ADT/SmallString.h" -#include "llvm/ADT/Twine.h" #include "llvm/Support/ELF.h" #include "llvm/Support/ErrorHandling.h" -#include "llvm/Support/SourceMgr.h" +#include "llvm/Support/FileSystem.h" +#include "llvm/Support/MemoryBuffer.h" #include "llvm/Support/Signals.h" +#include "llvm/Support/SourceMgr.h" using namespace llvm; typedef StringMap MachOUniqueMapTy; @@ -30,13 +32,20 @@ typedef StringMap ELFUniqueMapTy; typedef StringMap COFFUniqueMapTy; -MCContext::MCContext(const MCAsmInfo &mai, const MCRegisterInfo &mri, - const MCObjectFileInfo *mofi, const SourceMgr *mgr) : +MCContext::MCContext(const MCAsmInfo *mai, const MCRegisterInfo *mri, + const MCObjectFileInfo *mofi, const SourceMgr *mgr, + bool DoAutoReset) : SrcMgr(mgr), MAI(mai), MRI(mri), MOFI(mofi), Allocator(), Symbols(Allocator), UsedNames(Allocator), NextUniqueID(0), - CurrentDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0), - AllowTemporaryLabels(true) { + CurrentDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0), + DwarfLocSeen(false), GenDwarfForAssembly(false), GenDwarfFileNumber(0), + AllowTemporaryLabels(true), DwarfCompileUnitID(0), AutoReset(DoAutoReset) { + + error_code EC = llvm::sys::fs::current_path(CompilationDir); + assert(!EC && "Could not determine the current directory"); + (void)EC; + MachOUniquingMap = 0; ELFUniquingMap = 0; COFFUniquingMap = 0; @@ -45,22 +54,56 @@ MCContext::MCContext(const MCAsmInfo &mai, const MCRegisterInfo &mri, SecureLog = 0; SecureLogUsed = false; - DwarfLocSeen = false; - GenDwarfForAssembly = false; - GenDwarfFileNumber = 0; + if (SrcMgr && SrcMgr->getNumBuffers() > 0) + MainFileName = SrcMgr->getMemoryBuffer(0)->getBufferIdentifier(); + else + MainFileName = ""; } MCContext::~MCContext() { + + if (AutoReset) + reset(); + // NOTE: The symbols are all allocated out of a bump pointer allocator, // we don't need to free them here. + + // If the stream for the .secure_log_unique directive was created free it. + delete (raw_ostream*)SecureLog; +} + +//===----------------------------------------------------------------------===// +// Module Lifetime Management +//===----------------------------------------------------------------------===// + +void MCContext::reset() { + UsedNames.clear(); + Symbols.clear(); + Allocator.Reset(); + Instances.clear(); + MCDwarfFilesCUMap.clear(); + MCDwarfDirsCUMap.clear(); + MCGenDwarfLabelEntries.clear(); + DwarfDebugFlags = StringRef(); + MCLineSections.clear(); + MCLineSectionOrder.clear(); + DwarfCompileUnitID = 0; + MCLineTableSymbols.clear(); + CurrentDwarfLoc = MCDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0); // If we have the MachO uniquing map, free it. delete (MachOUniqueMapTy*)MachOUniquingMap; delete (ELFUniqueMapTy*)ELFUniquingMap; delete (COFFUniqueMapTy*)COFFUniquingMap; + MachOUniquingMap = 0; + ELFUniquingMap = 0; + COFFUniquingMap = 0; - // If the stream for the .secure_log_unique directive was created free it. - delete (raw_ostream*)SecureLog; + NextUniqueID = 0; + AllowTemporaryLabels = true; + DwarfLocSeen = false; + GenDwarfForAssembly = false; + GenDwarfFileNumber = 0; } //===----------------------------------------------------------------------===// @@ -87,7 +130,7 @@ MCSymbol *MCContext::CreateSymbol(StringRef Name) { // Determine whether this is an assembler temporary or normal label, if used. bool isTemporary = false; if (AllowTemporaryLabels) - isTemporary = Name.startswith(MAI.getPrivateGlobalPrefix()); + isTemporary = Name.startswith(MAI->getPrivateGlobalPrefix()); StringMapEntry *NameEntry = &UsedNames.GetOrCreateValue(Name); if (NameEntry->getValue()) { @@ -117,7 +160,7 @@ MCSymbol *MCContext::GetOrCreateSymbol(const Twine &Name) { MCSymbol *MCContext::CreateTempSymbol() { SmallString<128> NameSV; raw_svector_ostream(NameSV) - << MAI.getPrivateGlobalPrefix() << "tmp" << NextUniqueID++; + << MAI->getPrivateGlobalPrefix() << "tmp" << NextUniqueID++; return CreateSymbol(NameSV); } @@ -136,14 +179,14 @@ unsigned MCContext::GetInstance(int64_t LocalLabelVal) { } MCSymbol *MCContext::CreateDirectionalLocalSymbol(int64_t LocalLabelVal) { - return GetOrCreateSymbol(Twine(MAI.getPrivateGlobalPrefix()) + + return GetOrCreateSymbol(Twine(MAI->getPrivateGlobalPrefix()) + Twine(LocalLabelVal) + "\2" + Twine(NextInstance(LocalLabelVal))); } MCSymbol *MCContext::GetDirectionalLocalSymbol(int64_t LocalLabelVal, int bORf) { - return GetOrCreateSymbol(Twine(MAI.getPrivateGlobalPrefix()) + + return GetOrCreateSymbol(Twine(MAI->getPrivateGlobalPrefix()) + Twine(LocalLabelVal) + "\2" + Twine(GetInstance(LocalLabelVal) + bORf)); @@ -231,10 +274,10 @@ const MCSectionELF *MCContext::CreateELFGroupSection() { return Result; } -const MCSection *MCContext::getCOFFSection(StringRef Section, - unsigned Characteristics, - int Selection, - SectionKind Kind) { +const MCSectionCOFF *MCContext::getCOFFSection(StringRef Section, + unsigned Characteristics, + SectionKind Kind, int Selection, + const MCSectionCOFF *Assoc) { if (COFFUniquingMap == 0) COFFUniquingMap = new COFFUniqueMapTy(); COFFUniqueMapTy &Map = *(COFFUniqueMapTy*)COFFUniquingMap; @@ -245,12 +288,20 @@ const MCSection *MCContext::getCOFFSection(StringRef Section, MCSectionCOFF *Result = new (*this) MCSectionCOFF(Entry.getKey(), Characteristics, - Selection, Kind); + Selection, Assoc, Kind); Entry.setValue(Result); return Result; } +const MCSectionCOFF *MCContext::getCOFFSection(StringRef Section) { + if (COFFUniquingMap == 0) + COFFUniquingMap = new COFFUniqueMapTy(); + COFFUniqueMapTy &Map = *(COFFUniqueMapTy*)COFFUniquingMap; + + return Map.lookup(Section); +} + //===----------------------------------------------------------------------===// // Dwarf Management //===----------------------------------------------------------------------===// @@ -260,11 +311,13 @@ const MCSection *MCContext::getCOFFSection(StringRef Section, /// error and zero is returned and the client reports the error, else the /// allocated file number is returned. The file numbers may be in any order. unsigned MCContext::GetDwarfFile(StringRef Directory, StringRef FileName, - unsigned FileNumber) { + unsigned FileNumber, unsigned CUID) { // TODO: a FileNumber of zero says to use the next available file number. // Note: in GenericAsmParser::ParseDirectiveFile() FileNumber was checked // to not be less than one. This needs to be change to be not less than zero. + SmallVectorImpl& MCDwarfFiles = MCDwarfFilesCUMap[CUID]; + SmallVectorImpl& MCDwarfDirs = MCDwarfDirsCUMap[CUID]; // Make space for this FileNumber in the MCDwarfFiles vector if needed. if (FileNumber >= MCDwarfFiles.size()) { MCDwarfFiles.resize(FileNumber + 1); @@ -324,7 +377,8 @@ unsigned MCContext::GetDwarfFile(StringRef Directory, StringRef FileName, /// isValidDwarfFileNumber - takes a dwarf file number and returns true if it /// currently is assigned and false otherwise. -bool MCContext::isValidDwarfFileNumber(unsigned FileNumber) { +bool MCContext::isValidDwarfFileNumber(unsigned FileNumber, unsigned CUID) { + SmallVectorImpl& MCDwarfFiles = MCDwarfFilesCUMap[CUID]; if(FileNumber == 0 || FileNumber >= MCDwarfFiles.size()) return false;