//===----------------------------------------------------------------------===//
#include "llvm/MC/MCContext.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCSectionMachO.h"
-#include "llvm/MC/MCSectionELF.h"
+#include "llvm/MC/MCDwarf.h"
+#include "llvm/MC/MCLabel.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCRegisterInfo.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/Target/TargetAsmInfo.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, 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),
+ 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();
-MCContext::MCContext(const MCAsmInfo &mai, const TargetAsmInfo *tai) :
- MAI(mai), TAI(tai), NextUniqueID(0),
- CurrentDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0) {
MachOUniquingMap = 0;
ELFUniquingMap = 0;
COFFUniquingMap = 0;
SecureLog = 0;
SecureLogUsed = false;
- DwarfLocSeen = false;
+ 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;
-
- delete TAI;
+ NextUniqueID = 0;
+ AllowTemporaryLabels = true;
+ DwarfLocSeen = false;
+ GenDwarfForAssembly = false;
+ GenDwarfFileNumber = 0;
}
//===----------------------------------------------------------------------===//
}
MCSymbol *MCContext::CreateSymbol(StringRef Name) {
- // Determine whether this is an assembler temporary or normal label.
- bool isTemporary = Name.startswith(MAI.getPrivateGlobalPrefix());
+ // Determine whether this is an assembler temporary or normal label, if used.
+ bool isTemporary = false;
+ if (AllowTemporaryLabels)
+ isTemporary = Name.startswith(MAI->getPrivateGlobalPrefix());
StringMapEntry<bool> *NameEntry = &UsedNames.GetOrCreateValue(Name);
if (NameEntry->getValue()) {
- assert(isTemporary && "Cannot rename non temporary symbols");
- SmallString<128> NewName;
+ assert(isTemporary && "Cannot rename non-temporary symbols");
+ SmallString<128> NewName = Name;
do {
- Twine T = Name + Twine(NextUniqueID++);
- T.toVector(NewName);
- StringRef foo = NewName;
- NameEntry = &UsedNames.GetOrCreateValue(foo);
+ NewName.resize(Name.size());
+ raw_svector_ostream(NewName) << NextUniqueID++;
+ NameEntry = &UsedNames.GetOrCreateValue(NewName);
} while (NameEntry->getValue());
}
NameEntry->setValue(true);
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;
- Twine Name = Twine(MAI.getPrivateGlobalPrefix()) + "tmp" +
- Twine(NextUniqueID++);
- Name.toVector(NameSV);
+ raw_svector_ostream(NameSV)
+ << 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;
+
+ const MCSymbol *COMDATSymbol = NULL;
+ if (!COMDATSymName.empty())
+ COMDATSymbol = GetOrCreateSymbol(COMDATSymName);
- Entry.setValue(Result);
+ 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
//===----------------------------------------------------------------------===//
/// directory tables. If the file number has already been allocated it is an
/// 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 FileName, unsigned FileNumber) {
+unsigned MCContext::GetDwarfFile(StringRef Directory, StringRef FileName,
+ 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<MCDwarfFile *>& MCDwarfFiles = MCDwarfFilesCUMap[CUID];
+ SmallVectorImpl<StringRef>& MCDwarfDirs = MCDwarfDirsCUMap[CUID];
// Make space for this FileNumber in the MCDwarfFiles vector if needed.
if (FileNumber >= MCDwarfFiles.size()) {
MCDwarfFiles.resize(FileNumber + 1);
// Get the new MCDwarfFile slot for this FileNumber.
MCDwarfFile *&File = MCDwarfFiles[FileNumber];
- // Separate the directory part from the basename of the FileName.
- std::pair<StringRef, StringRef> Slash = FileName.rsplit('/');
+ if (Directory.empty()) {
+ // Separate the directory part from the basename of the FileName.
+ 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.
- StringRef Name;
- unsigned DirIndex;
// Capture directory name.
- if (Slash.second.empty()) {
- Name = Slash.first;
- DirIndex = 0; // For FileNames with no directories a DirIndex of 0 is used.
+ unsigned DirIndex;
+ if (Directory.empty()) {
+ // For FileNames with no directories a DirIndex of 0 is used.
+ DirIndex = 0;
} else {
- StringRef Directory = Slash.first;
- Name = Slash.second;
- for (DirIndex = 0; DirIndex < MCDwarfDirs.size(); DirIndex++) {
+ DirIndex = 0;
+ for (unsigned End = MCDwarfDirs.size(); DirIndex < End; DirIndex++) {
if (Directory == MCDwarfDirs[DirIndex])
break;
}
}
// The DirIndex is one based, as DirIndex of 0 is used for FileNames with
// no directories. MCDwarfDirs[] is unlike MCDwarfFiles[] in that the
- // directory names are stored at MCDwarfDirs[DirIndex-1] where FileNames are
- // stored at MCDwarfFiles[FileNumber].Name .
+ // directory names are stored at MCDwarfDirs[DirIndex-1] where FileNames
+ // are stored at MCDwarfFiles[FileNumber].Name .
DirIndex++;
}
// Now make the MCDwarfFile entry and place it in the slot in the MCDwarfFiles
// vector.
- char *Buf = static_cast<char *>(Allocate(Name.size()));
- memcpy(Buf, Name.data(), Name.size());
- File = new (*this) MCDwarfFile(StringRef(Buf, Name.size()), DirIndex);
+ char *Buf = static_cast<char *>(Allocate(FileName.size()));
+ memcpy(Buf, FileName.data(), FileName.size());
+ File = new (*this) MCDwarfFile(StringRef(Buf, FileName.size()), DirIndex);
// return the allocated FileNumber.
return FileNumber;
/// 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<MCDwarfFile *>& MCDwarfFiles = MCDwarfFilesCUMap[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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