#ifndef LLVM_MC_MCCONTEXT_H
#define LLVM_MC_MCCONTEXT_H
-#include "llvm/MC/SectionKind.h"
-#include "llvm/MC/MCDwarf.h"
#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
+#include "llvm/MC/MCDwarf.h"
+#include "llvm/MC/SectionKind.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/raw_ostream.h"
+#include <map>
#include <vector> // FIXME: Shouldn't be needed.
namespace llvm {
class Twine;
class MCSectionMachO;
class MCSectionELF;
+ class MCSectionCOFF;
/// MCContext - Context object for machine code objects. This class owns all
/// of the sections that it creates.
const SourceMgr *SrcMgr;
/// The MCAsmInfo for this target.
- const MCAsmInfo &MAI;
+ const MCAsmInfo *MAI;
/// The MCRegisterInfo for this target.
- const MCRegisterInfo &MRI;
+ const MCRegisterInfo *MRI;
/// The MCObjectFileInfo for this target.
const MCObjectFileInfo *MOFI;
/// .secure_log_reset appearing between them.
bool SecureLogUsed;
+ /// The compilation directory to use for DW_AT_comp_dir.
+ SmallString<128> CompilationDir;
+
+ /// The main file name if passed in explicitly.
+ std::string MainFileName;
+
/// The dwarf file and directory tables from the dwarf .file directive.
- std::vector<MCDwarfFile *> MCDwarfFiles;
- std::vector<StringRef> MCDwarfDirs;
+ /// We now emit a line table for each compile unit. To reduce the prologue
+ /// size of each line table, the files and directories used by each compile
+ /// unit are separated.
+ typedef std::map<unsigned, SmallVector<MCDwarfFile *, 4> > MCDwarfFilesMap;
+ MCDwarfFilesMap MCDwarfFilesCUMap;
+ std::map<unsigned, SmallVector<StringRef, 4> > MCDwarfDirsCUMap;
/// The current dwarf line information from the last dwarf .loc directive.
MCDwarfLoc CurrentDwarfLoc;
/// non-empty.
StringRef DwarfDebugFlags;
+ /// The string to embed in as the dwarf AT_producer for the compile unit, if
+ /// non-empty.
+ StringRef DwarfDebugProducer;
+
/// Honor temporary labels, this is useful for debugging semantic
/// differences between temporary and non-temporary labels (primarily on
/// Darwin).
/// We need a deterministic iteration order, so we remember the order
/// the elements were added.
std::vector<const MCSection *> MCLineSectionOrder;
+ /// The Compile Unit ID that we are currently processing.
+ unsigned DwarfCompileUnitID;
+ /// The line table start symbol for each Compile Unit.
+ DenseMap<unsigned, MCSymbol *> MCLineTableSymbols;
void *MachOUniquingMap, *ELFUniquingMap, *COFFUniquingMap;
+ /// Do automatic reset in destructor
+ bool AutoReset;
+
MCSymbol *CreateSymbol(StringRef Name);
public:
- explicit MCContext(const MCAsmInfo &MAI, const MCRegisterInfo &MRI,
- const MCObjectFileInfo *MOFI, const SourceMgr *Mgr = 0);
+ explicit MCContext(const MCAsmInfo *MAI, const MCRegisterInfo *MRI,
+ const MCObjectFileInfo *MOFI, const SourceMgr *Mgr = 0,
+ bool DoAutoReset = true);
~MCContext();
const SourceMgr *getSourceManager() const { return SrcMgr; }
- const MCAsmInfo &getAsmInfo() const { return MAI; }
+ const MCAsmInfo *getAsmInfo() const { return MAI; }
- const MCRegisterInfo &getRegisterInfo() const { return MRI; }
+ const MCRegisterInfo *getRegisterInfo() const { return MRI; }
const MCObjectFileInfo *getObjectFileInfo() const { return MOFI; }
void setAllowTemporaryLabels(bool Value) { AllowTemporaryLabels = Value; }
+ /// @name Module Lifetime Management
+ /// @{
+
+ /// reset - return object to right after construction state to prepare
+ /// to process a new module
+ void reset();
+
+ /// @}
+
/// @name Symbol Management
/// @{
const MCSectionELF *CreateELFGroupSection();
- const MCSection *getCOFFSection(StringRef Section, unsigned Characteristics,
- int Selection, SectionKind Kind);
+ const MCSectionCOFF *getCOFFSection(StringRef Section,
+ unsigned Characteristics,
+ SectionKind Kind,
+ StringRef COMDATSymName,
+ int Selection,
+ const MCSectionCOFF *Assoc = 0);
- const MCSection *getCOFFSection(StringRef Section, unsigned Characteristics,
- SectionKind Kind) {
- return getCOFFSection (Section, Characteristics, 0, Kind);
- }
+ const MCSectionCOFF *getCOFFSection(StringRef Section,
+ unsigned Characteristics,
+ SectionKind Kind);
+ const MCSectionCOFF *getCOFFSection(StringRef Section);
/// @}
/// @name Dwarf Management
/// @{
+ /// \brief Get the compilation directory for DW_AT_comp_dir
+ /// This can be overridden by clients which want to control the reported
+ /// compilation directory and have it be something other than the current
+ /// working directory.
+ StringRef getCompilationDir() const { return CompilationDir; }
+
+ /// \brief Set the compilation directory for DW_AT_comp_dir
+ /// Override the default (CWD) compilation directory.
+ void setCompilationDir(StringRef S) { CompilationDir = S.str(); }
+
+ /// \brief Get the main file name for use in error messages and debug
+ /// info. This can be set to ensure we've got the correct file name
+ /// after preprocessing or for -save-temps.
+ const std::string &getMainFileName() const { return MainFileName; }
+
+ /// \brief Set the main file name and override the default.
+ void setMainFileName(StringRef S) { MainFileName = S.str(); }
+
/// GetDwarfFile - creates an entry in the dwarf file and directory tables.
unsigned GetDwarfFile(StringRef Directory, StringRef FileName,
- unsigned FileNumber);
+ unsigned FileNumber, unsigned CUID);
- bool isValidDwarfFileNumber(unsigned FileNumber);
+ bool isValidDwarfFileNumber(unsigned FileNumber, unsigned CUID = 0);
bool hasDwarfFiles() const {
- return !MCDwarfFiles.empty();
+ // Traverse MCDwarfFilesCUMap and check whether each entry is empty.
+ MCDwarfFilesMap::const_iterator MapB, MapE;
+ for (MapB = MCDwarfFilesCUMap.begin(), MapE = MCDwarfFilesCUMap.end();
+ MapB != MapE; MapB++)
+ if (!MapB->second.empty())
+ return true;
+ return false;
}
- const std::vector<MCDwarfFile *> &getMCDwarfFiles() {
- return MCDwarfFiles;
+ const SmallVectorImpl<MCDwarfFile *> &getMCDwarfFiles(unsigned CUID = 0) {
+ return MCDwarfFilesCUMap[CUID];
}
- const std::vector<StringRef> &getMCDwarfDirs() {
- return MCDwarfDirs;
+ const SmallVectorImpl<StringRef> &getMCDwarfDirs(unsigned CUID = 0) {
+ return MCDwarfDirsCUMap[CUID];
}
const DenseMap<const MCSection *, MCLineSection *>
MCLineSections[Sec] = Line;
MCLineSectionOrder.push_back(Sec);
}
+ unsigned getDwarfCompileUnitID() {
+ return DwarfCompileUnitID;
+ }
+ void setDwarfCompileUnitID(unsigned CUIndex) {
+ DwarfCompileUnitID = CUIndex;
+ }
+ const DenseMap<unsigned, MCSymbol *> &getMCLineTableSymbols() const {
+ return MCLineTableSymbols;
+ }
+ MCSymbol *getMCLineTableSymbol(unsigned ID) const {
+ DenseMap<unsigned, MCSymbol *>::const_iterator CIter =
+ MCLineTableSymbols.find(ID);
+ if (CIter == MCLineTableSymbols.end())
+ return NULL;
+ return CIter->second;
+ }
+ void setMCLineTableSymbol(MCSymbol *Sym, unsigned ID) {
+ MCLineTableSymbols[ID] = Sym;
+ }
/// setCurrentDwarfLoc - saves the information from the currently parsed
/// dwarf .loc directive and sets DwarfLocSeen. When the next instruction
void setDwarfDebugFlags(StringRef S) { DwarfDebugFlags = S; }
StringRef getDwarfDebugFlags() { return DwarfDebugFlags; }
+ void setDwarfDebugProducer(StringRef S) { DwarfDebugProducer = S; }
+ StringRef getDwarfDebugProducer() { return DwarfDebugProducer; }
+
/// @}
char *getSecureLogFile() { return SecureLogFile; }
void Deallocate(void *Ptr) {
}
- // Unrecoverable error has occured. Display the best diagnostic we can
+ // Unrecoverable error has occurred. Display the best diagnostic we can
// and bail via exit(1). For now, most MC backend errors are unrecoverable.
// FIXME: We should really do something about that.
LLVM_ATTRIBUTE_NORETURN void FatalError(SMLoc L, const Twine &Msg);
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