#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/StringMap.h"
#include "llvm/Support/Allocator.h"
+#include "llvm/Support/raw_ostream.h"
+#include <vector> // FIXME: Shouldn't be needed.
namespace llvm {
class MCAsmInfo;
class MCExpr;
class MCSection;
class MCSymbol;
+ class MCLabel;
+ class MCDwarfFile;
+ class MCDwarfLoc;
+ class MCLineSection;
class StringRef;
class Twine;
+ class MCSectionMachO;
+ class MCSectionELF;
/// MCContext - Context object for machine code objects. This class owns all
/// of the sections that it creates.
/// The MCAsmInfo for this target.
const MCAsmInfo &MAI;
-
- /// Sections - Bindings of names to allocated sections.
- StringMap<MCSection*> Sections;
/// Symbols - Bindings of names to symbols.
StringMap<MCSymbol*> Symbols;
/// NextUniqueID - The next ID to dole out to an unnamed assembler temporary
/// symbol.
unsigned NextUniqueID;
+
+ /// Instances of directional local labels.
+ DenseMap<unsigned, MCLabel *> Instances;
+ /// NextInstance() creates the next instance of the directional local label
+ /// for the LocalLabelVal and adds it to the map if needed.
+ unsigned NextInstance(int64_t LocalLabelVal);
+ /// GetInstance() gets the current instance of the directional local label
+ /// for the LocalLabelVal and adds it to the map if needed.
+ unsigned GetInstance(int64_t LocalLabelVal);
+ /// The file name of the log file from the enviromment variable
+ /// AS_SECURE_LOG_FILE. Which must be set before the .secure_log_unique
+ /// directive is used or it is an error.
+ char *SecureLogFile;
+ /// The stream that gets written to for the .secure_log_unique directive.
+ raw_ostream *SecureLog;
+ /// Boolean toggled when .secure_log_unique / .secure_log_reset is seen to
+ /// catch errors if .secure_log_unique appears twice without
+ /// .secure_log_reset appearing between them.
+ bool SecureLogUsed;
+
+ /// The dwarf file and directory tables from the dwarf .file directive.
+ std::vector<MCDwarfFile *> MCDwarfFiles;
+ std::vector<StringRef> MCDwarfDirs;
+
+ /// The current dwarf line information from the last dwarf .loc directive.
+ MCDwarfLoc CurrentDwarfLoc;
+ bool DwarfLocSeen;
+
+ /// The dwarf line information from the .loc directives for the sections
+ /// with assembled machine instructions have after seeing .loc directives.
+ DenseMap<const MCSection *, MCLineSection *> MCLineSections;
+ /// We need a deterministic iteration order, so we remember the order
+ /// the elements were added.
+ std::vector<const MCSection *> MCLineSectionOrder;
+
/// Allocator - Allocator object used for creating machine code objects.
///
/// We use a bump pointer allocator to avoid the need to track all allocated
/// objects.
BumpPtrAllocator Allocator;
+
+ void *MachOUniquingMap, *ELFUniquingMap, *COFFUniquingMap;
public:
explicit MCContext(const MCAsmInfo &MAI);
~MCContext();
/// with a unique but unspecified name.
MCSymbol *CreateTempSymbol();
+ /// CreateDirectionalLocalSymbol - Create the defintion of a directional
+ /// local symbol for numbered label (used for "1:" defintions).
+ MCSymbol *CreateDirectionalLocalSymbol(int64_t LocalLabelVal);
+
+ /// GetDirectionalLocalSymbol - Create and return a directional local
+ /// symbol for numbered label (used for "1b" or 1f" references).
+ MCSymbol *GetDirectionalLocalSymbol(int64_t LocalLabelVal, int bORf);
+
/// GetOrCreateSymbol - Lookup the symbol inside with the specified
/// @p Name. If it exists, return it. If not, create a forward
/// reference and return it.
MCSymbol *LookupSymbol(StringRef Name) const;
/// @}
+
+ /// @name Section Managment
+ /// @{
+
+ /// getMachOSection - Return the MCSection for the specified mach-o section.
+ /// This requires the operands to be valid.
+ const MCSectionMachO *getMachOSection(StringRef Segment,
+ StringRef Section,
+ unsigned TypeAndAttributes,
+ unsigned Reserved2,
+ SectionKind K);
+ const MCSectionMachO *getMachOSection(StringRef Segment,
+ StringRef Section,
+ unsigned TypeAndAttributes,
+ SectionKind K) {
+ return getMachOSection(Segment, Section, TypeAndAttributes, 0, K);
+ }
+
+ const MCSectionELF *getELFSection(StringRef Section, unsigned Type,
+ unsigned Flags, SectionKind Kind);
+
+ const MCSectionELF *getELFSection(StringRef Section, unsigned Type,
+ unsigned Flags, SectionKind Kind,
+ unsigned EntrySize, StringRef Group);
+
+ const MCSectionELF *CreateELFGroupSection();
+
+ const MCSection *getCOFFSection(StringRef Section, unsigned Characteristics,
+ int Selection, SectionKind Kind);
+
+ const MCSection *getCOFFSection(StringRef Section, unsigned Characteristics,
+ SectionKind Kind) {
+ return getCOFFSection (Section, Characteristics, 0, Kind);
+ }
+
+
+ /// @}
+
+ /// @name Dwarf Managment
+ /// @{
+
+ /// GetDwarfFile - creates an entry in the dwarf file and directory tables.
+ unsigned GetDwarfFile(StringRef FileName, unsigned FileNumber);
+
+ bool isValidDwarfFileNumber(unsigned FileNumber);
+
+ bool hasDwarfFiles(void) {
+ return MCDwarfFiles.size() != 0;
+ }
+
+ const std::vector<MCDwarfFile *> &getMCDwarfFiles() {
+ return MCDwarfFiles;
+ }
+ const std::vector<StringRef> &getMCDwarfDirs() {
+ return MCDwarfDirs;
+ }
+
+ const DenseMap<const MCSection *, MCLineSection *>
+ &getMCLineSections() const {
+ return MCLineSections;
+ }
+ const std::vector<const MCSection *> &getMCLineSectionOrder() const {
+ return MCLineSectionOrder;
+ }
+ void addMCLineSection(const MCSection *Sec, MCLineSection *Line) {
+ MCLineSections[Sec] = Line;
+ MCLineSectionOrder.push_back(Sec);
+ }
+
+ /// setCurrentDwarfLoc - saves the information from the currently parsed
+ /// dwarf .loc directive and sets DwarfLocSeen. When the next instruction
+ /// is assembled an entry in the line number table with this information and
+ /// the address of the instruction will be created.
+ void setCurrentDwarfLoc(unsigned FileNum, unsigned Line, unsigned Column,
+ unsigned Flags, unsigned Isa,
+ unsigned Discriminator) {
+ CurrentDwarfLoc.setFileNum(FileNum);
+ CurrentDwarfLoc.setLine(Line);
+ CurrentDwarfLoc.setColumn(Column);
+ CurrentDwarfLoc.setFlags(Flags);
+ CurrentDwarfLoc.setIsa(Isa);
+ CurrentDwarfLoc.setDiscriminator(Discriminator);
+ DwarfLocSeen = true;
+ }
+ void ClearDwarfLocSeen() { DwarfLocSeen = false; }
+
+ bool getDwarfLocSeen() { return DwarfLocSeen; }
+ const MCDwarfLoc &getCurrentDwarfLoc() { return CurrentDwarfLoc; }
+
+ /// @}
+
+ char *getSecureLogFile() { return SecureLogFile; }
+ raw_ostream *getSecureLog() { return SecureLog; }
+ bool getSecureLogUsed() { return SecureLogUsed; }
+ void setSecureLog(raw_ostream *Value) {
+ SecureLog = Value;
+ }
+ void setSecureLogUsed(bool Value) {
+ SecureLogUsed = Value;
+ }
void *Allocate(unsigned Size, unsigned Align = 8) {
return Allocator.Allocate(Size, Align);
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