//===----------------------------------------------------------------------===//
#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/FileSystem.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/SourceMgr.h"
+#include <map>
+
using namespace llvm;
-typedef StringMap<const MCSectionMachO*> MachOUniqueMapTy;
-typedef StringMap<const MCSectionELF*> ELFUniqueMapTy;
-typedef StringMap<const MCSectionCOFF*> COFFUniqueMapTy;
+typedef std::pair<std::string, std::string> SectionGroupPair;
+typedef StringMap<const MCSectionMachO*> MachOUniqueMapTy;
+typedef std::map<SectionGroupPair, const MCSectionELF *> ELFUniqueMapTy;
+typedef std::map<SectionGroupPair, const MCSectionCOFF *> COFFUniqueMapTy;
-MCContext::MCContext(const MCAsmInfo &mai, const MCRegisterInfo &mri,
- const MCObjectFileInfo *mofi) :
- MAI(mai), MRI(mri), MOFI(mofi),
+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) {
+ DwarfLocSeen(false), GenDwarfForAssembly(false), GenDwarfFileNumber(0),
+ AllowTemporaryLabels(true), DwarfCompileUnitID(0), AutoReset(DoAutoReset) {
+
+ error_code EC = llvm::sys::fs::current_path(CompilationDir);
+ if (EC)
+ CompilationDir.clear();
+
MachOUniquingMap = 0;
ELFUniquingMap = 0;
COFFUniquingMap = 0;
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();
+ MCDwarfFileTablesCUMap.clear();
+ MCGenDwarfLabelEntries.clear();
+ DwarfDebugFlags = StringRef();
+ DwarfCompileUnitID = 0;
+ 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;
}
//===----------------------------------------------------------------------===//
// 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<bool> *NameEntry = &UsedNames.GetOrCreateValue(Name);
if (NameEntry->getValue()) {
- assert(isTemporary && "Cannot rename non temporary symbols");
+ assert(isTemporary && "Cannot rename non-temporary symbols");
SmallString<128> NewName = Name;
do {
NewName.resize(Name.size());
MCSymbol *MCContext::GetOrCreateSymbol(const Twine &Name) {
SmallString<128> NameSV;
- Name.toVector(NameSV);
- return GetOrCreateSymbol(NameSV.str());
+ return GetOrCreateSymbol(Name.toStringRef(NameSV));
}
MCSymbol *MCContext::CreateTempSymbol() {
SmallString<128> NameSV;
raw_svector_ostream(NameSV)
- << MAI.getPrivateGlobalPrefix() << "tmp" << NextUniqueID++;
+ << MAI->getPrivateGlobalPrefix() << "tmp" << NextUniqueID++;
return CreateSymbol(NameSV);
}
}
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));
return Symbols.lookup(Name);
}
+MCSymbol *MCContext::LookupSymbol(const Twine &Name) const {
+ SmallString<128> NameSV;
+ Name.toVector(NameSV);
+ return LookupSymbol(NameSV.str());
+}
+
//===----------------------------------------------------------------------===//
// Section Management
//===----------------------------------------------------------------------===//
ELFUniqueMapTy &Map = *(ELFUniqueMapTy*)ELFUniquingMap;
// Do the lookup, if we have a hit, return it.
- StringMapEntry<const MCSectionELF*> &Entry = Map.GetOrCreateValue(Section);
- if (Entry.getValue()) return Entry.getValue();
+ std::pair<ELFUniqueMapTy::iterator, bool> Entry = Map.insert(
+ std::make_pair(SectionGroupPair(Section, Group), (MCSectionELF *)0));
+ if (!Entry.second) return Entry.first->second;
// Possibly refine the entry size first.
if (!EntrySize) {
if (!Group.empty())
GroupSym = GetOrCreateSymbol(Group);
- MCSectionELF *Result = new (*this) MCSectionELF(Entry.getKey(), Type, Flags,
- Kind, EntrySize, GroupSym);
- Entry.setValue(Result);
+ MCSectionELF *Result = new (*this) MCSectionELF(
+ Entry.first->first.first, Type, Flags, Kind, EntrySize, GroupSym);
+ Entry.first->second = Result;
return Result;
}
return Result;
}
-const MCSection *MCContext::getCOFFSection(StringRef Section,
- unsigned Characteristics,
- int Selection,
- SectionKind Kind) {
+const MCSectionCOFF *
+MCContext::getCOFFSection(StringRef Section, unsigned Characteristics,
+ SectionKind Kind, StringRef COMDATSymName,
+ int Selection, const MCSectionCOFF *Assoc) {
if (COFFUniquingMap == 0)
COFFUniquingMap = new COFFUniqueMapTy();
COFFUniqueMapTy &Map = *(COFFUniqueMapTy*)COFFUniquingMap;
// Do the lookup, if we have a hit, return it.
- StringMapEntry<const MCSectionCOFF*> &Entry = Map.GetOrCreateValue(Section);
- if (Entry.getValue()) return Entry.getValue();
- MCSectionCOFF *Result = new (*this) MCSectionCOFF(Entry.getKey(),
- Characteristics,
- Selection, Kind);
+ SectionGroupPair P(Section, COMDATSymName);
+ std::pair<COFFUniqueMapTy::iterator, bool> Entry =
+ Map.insert(std::make_pair(P, (MCSectionCOFF *)0));
+ COFFUniqueMapTy::iterator Iter = Entry.first;
+ if (!Entry.second)
+ return Iter->second;
- Entry.setValue(Result);
+ const MCSymbol *COMDATSymbol = NULL;
+ if (!COMDATSymName.empty())
+ COMDATSymbol = GetOrCreateSymbol(COMDATSymName);
+
+ MCSectionCOFF *Result =
+ new (*this) MCSectionCOFF(Iter->first.first, Characteristics,
+ COMDATSymbol, Selection, Assoc, Kind);
+
+ Iter->second = Result;
return Result;
}
+const MCSectionCOFF *
+MCContext::getCOFFSection(StringRef Section, unsigned Characteristics,
+ SectionKind Kind) {
+ return getCOFFSection(Section, Characteristics, Kind, "", 0);
+}
+
+const MCSectionCOFF *MCContext::getCOFFSection(StringRef Section) {
+ if (COFFUniquingMap == 0)
+ COFFUniquingMap = new COFFUniqueMapTy();
+ COFFUniqueMapTy &Map = *(COFFUniqueMapTy*)COFFUniquingMap;
+
+ SectionGroupPair P(Section, "");
+ COFFUniqueMapTy::iterator Iter = Map.find(P);
+ if (Iter == Map.end())
+ return 0;
+ return Iter->second;
+}
+
//===----------------------------------------------------------------------===//
// Dwarf Management
//===----------------------------------------------------------------------===//
/// 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.
+ MCDwarfFileTable &Table = MCDwarfFileTablesCUMap[CUID];
+ SmallVectorImpl<MCDwarfFile *>& MCDwarfFiles = Table.getMCDwarfFiles();
+ SmallVectorImpl<StringRef>& MCDwarfDirs = Table.getMCDwarfDirs();
// Make space for this FileNumber in the MCDwarfFiles vector if needed.
if (FileNumber >= MCDwarfFiles.size()) {
MCDwarfFiles.resize(FileNumber + 1);
if (Directory.empty()) {
// Separate the directory part from the basename of the FileName.
- std::pair<StringRef, StringRef> Slash = FileName.rsplit('/');
- Directory = Slash.second;
- if (!Directory.empty()) {
- Directory = Slash.first;
- FileName = Slash.second;
+ StringRef tFileName = sys::path::filename(FileName);
+ if (!tFileName.empty()) {
+ Directory = sys::path::parent_path(FileName);
+ if (!Directory.empty())
+ FileName = tFileName;
}
}
- // Find or make a entry in the MCDwarfDirs vector for this Directory.
+ // Find or make an entry in the MCDwarfDirs vector for this Directory.
// Capture directory name.
unsigned DirIndex;
if (Directory.empty()) {
/// 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) {
+ const SmallVectorImpl<MCDwarfFile *>& MCDwarfFiles = getMCDwarfFiles(CUID);
if(FileNumber == 0 || FileNumber >= MCDwarfFiles.size())
return false;
return MCDwarfFiles[FileNumber] != 0;
}
+
+void MCContext::FatalError(SMLoc Loc, const Twine &Msg) {
+ // If we have a source manager and a location, use it. Otherwise just
+ // use the generic report_fatal_error().
+ if (!SrcMgr || Loc == SMLoc())
+ report_fatal_error(Msg);
+
+ // Use the source manager to print the message.
+ SrcMgr->PrintMessage(Loc, SourceMgr::DK_Error, Msg);
+
+ // If we reached here, we are failing ungracefully. Run the interrupt handlers
+ // to make sure any special cleanups get done, in particular that we remove
+ // files registered with RemoveFileOnSignal.
+ sys::RunInterruptHandlers();
+ exit(1);
+}
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