#ifndef LLVM_MC_MCSTREAMER_H
#define LLVM_MC_MCSTREAMER_H
-#include "llvm/Support/DataTypes.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/SmallVector.h"
#include "llvm/MC/MCDirectives.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCWin64EH.h"
-#include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/SmallVector.h"
+#include "llvm/Support/DataTypes.h"
namespace llvm {
class MCAsmBackend;
- class MCAsmInfo;
class MCCodeEmitter;
class MCContext;
class MCExpr;
class MCSection;
class MCSymbol;
class StringRef;
- class TargetLoweringObjectFile;
class Twine;
class raw_ostream;
class formatted_raw_ostream;
class MCStreamer {
MCContext &Context;
- MCStreamer(const MCStreamer&); // DO NOT IMPLEMENT
- MCStreamer &operator=(const MCStreamer&); // DO NOT IMPLEMENT
+ MCStreamer(const MCStreamer&) LLVM_DELETED_FUNCTION;
+ MCStreamer &operator=(const MCStreamer&) LLVM_DELETED_FUNCTION;
bool EmitEHFrame;
bool EmitDebugFrame;
std::vector<MCDwarfFrameInfo> FrameInfos;
MCDwarfFrameInfo *getCurrentFrameInfo();
+ MCSymbol *EmitCFICommon();
void EnsureValidFrame();
std::vector<MCWin64EHUnwindInfo *> W64UnwindInfos;
SmallVector<std::pair<const MCSection *,
const MCSection *>, 4> SectionStack;
- unsigned UniqueCodeBeginSuffix;
- unsigned UniqueDataBeginSuffix;
+ bool AutoInitSections;
protected:
- /// Indicator of whether the previous data-or-code indicator was for
- /// code or not. Used to determine when we need to emit a new indicator.
- enum DataType {
- Data,
- Code,
- JumpTable8,
- JumpTable16,
- JumpTable32
- };
- DataType RegionIndicator;
-
-
MCStreamer(MCContext &Ctx);
const MCExpr *BuildSymbolDiff(MCContext &Context, const MCSymbol *A,
const MCExpr *ForceExpAbs(const MCExpr* Expr);
+ void RecordProcStart(MCDwarfFrameInfo &Frame);
+ virtual void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame);
+ void RecordProcEnd(MCDwarfFrameInfo &Frame);
+ virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &CurFrame);
void EmitFrames(bool usingCFI);
MCWin64EHUnwindInfo *getCurrentW64UnwindInfo(){return CurrentW64UnwindInfo;}
public:
virtual ~MCStreamer();
+ /// State management
+ ///
+ virtual void reset();
+
MCContext &getContext() const { return Context; }
unsigned getNumFrameInfos() {
SectionStack.back().first = Section;
}
+ /// Initialize the streamer.
+ void InitStreamer() {
+ if (AutoInitSections)
+ InitSections();
+ }
+
+ /// Tell this MCStreamer to call InitSections upon initialization.
+ void setAutoInitSections(bool AutoInitSections) {
+ this->AutoInitSections = AutoInitSections;
+ }
+
/// InitSections - Create the default sections and set the initial one.
virtual void InitSections() = 0;
/// used in an assignment.
virtual void EmitLabel(MCSymbol *Symbol);
- /// EmitDataRegion - Emit a label that marks the beginning of a data
- /// region.
- /// On ELF targets, this corresponds to an assembler statement such as:
- /// $d.1:
- virtual void EmitDataRegion();
-
- /// EmitJumpTable8Region - Emit a label that marks the beginning of a
- /// jump table composed of 8-bit offsets.
- /// On ELF targets, this corresponds to an assembler statement such as:
- /// $d.1:
- virtual void EmitJumpTable8Region();
-
- /// EmitJumpTable16Region - Emit a label that marks the beginning of a
- /// jump table composed of 16-bit offsets.
- /// On ELF targets, this corresponds to an assembler statement such as:
- /// $d.1:
- virtual void EmitJumpTable16Region();
-
- /// EmitJumpTable32Region - Emit a label that marks the beginning of a
- /// jump table composed of 32-bit offsets.
- /// On ELF targets, this corresponds to an assembler statement such as:
- /// $d.1:
- virtual void EmitJumpTable32Region();
-
- /// EmitCodeRegion - Emit a label that marks the beginning of a code
- /// region.
- /// On ELF targets, this corresponds to an assembler statement such as:
- /// $a.1:
- virtual void EmitCodeRegion();
-
- /// ForceCodeRegion - Forcibly sets the current region mode to code. Used
- /// at function entry points.
- void ForceCodeRegion() { RegionIndicator = Code; }
-
+ virtual void EmitDebugLabel(MCSymbol *Symbol);
virtual void EmitEHSymAttributes(const MCSymbol *Symbol,
MCSymbol *EHSymbol);
- /// EmitAssemblerFlag - Note in the output the specified @p Flag
+ /// EmitAssemblerFlag - Note in the output the specified @p Flag.
virtual void EmitAssemblerFlag(MCAssemblerFlag Flag) = 0;
+ /// EmitDataRegion - Note in the output the specified region @p Kind.
+ virtual void EmitDataRegion(MCDataRegionType Kind) {}
+
/// EmitThumbFunc - Note in the output that the specified @p Func is
/// a Thumb mode function (ARM target only).
virtual void EmitThumbFunc(MCSymbol *Func) = 0;
/// EndCOFFSymbolDef - Marks the end of the symbol definition.
virtual void EndCOFFSymbolDef() = 0;
+ /// EmitCOFFSecRel32 - Emits a COFF section relative relocation.
+ ///
+ /// @param Symbol - Symbol the section relative realocation should point to.
+ virtual void EmitCOFFSecRel32(MCSymbol const *Symbol);
+
/// EmitELFSize - Emit an ELF .size directive.
///
/// This corresponds to an assembler statement such as:
/// @param ByteAlignment - The alignment of the zerofill symbol if
/// non-zero. This must be a power of 2 on some targets.
virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
- unsigned Size = 0,unsigned ByteAlignment = 0) = 0;
+ uint64_t Size = 0,unsigned ByteAlignment = 0) = 0;
/// EmitTBSSSymbol - Emit a thread local bss (.tbss) symbol.
///
/// @name Generating Data
/// @{
- /// EmitBytes - Emit the bytes in \arg Data into the output.
+ /// EmitBytes - Emit the bytes in \p Data into the output.
///
/// This is used to implement assembler directives such as .byte, .ascii,
/// etc.
void EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
unsigned AddrSpace = 0);
+ /// EmitGPRel64Value - Emit the expression @p Value into the output as a
+ /// gprel64 (64-bit GP relative) value.
+ ///
+ /// This is used to implement assembler directives such as .gpdword on
+ /// targets that support them.
+ virtual void EmitGPRel64Value(const MCExpr *Value);
+
/// EmitGPRel32Value - Emit the expression @p Value into the output as a
/// gprel32 (32-bit GP relative) value.
///
/// @param Offset - The offset to reach. This may be an expression, but the
/// expression must be associated with the current section.
/// @param Value - The value to use when filling bytes.
- virtual void EmitValueToOffset(const MCExpr *Offset,
+ /// @return false on success, true if the offset was invalid.
+ virtual bool EmitValueToOffset(const MCExpr *Offset,
unsigned char Value = 0) = 0;
/// @}
virtual void EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding);
virtual void EmitCFISections(bool EH, bool Debug);
- virtual void EmitCFIStartProc();
- virtual void EmitCFIEndProc();
+ void EmitCFIStartProc();
+ void EmitCFIEndProc();
virtual void EmitCFIDefCfa(int64_t Register, int64_t Offset);
virtual void EmitCFIDefCfaOffset(int64_t Offset);
virtual void EmitCFIDefCfaRegister(int64_t Register);
virtual void EmitCFIRememberState();
virtual void EmitCFIRestoreState();
virtual void EmitCFISameValue(int64_t Register);
+ virtual void EmitCFIRestore(int64_t Register);
virtual void EmitCFIRelOffset(int64_t Register, int64_t Offset);
virtual void EmitCFIAdjustCfaOffset(int64_t Adjustment);
+ virtual void EmitCFIEscape(StringRef Values);
+ virtual void EmitCFISignalFrame();
+ virtual void EmitCFIUndefined(int64_t Register);
+ virtual void EmitCFIRegister(int64_t Register1, int64_t Register2);
virtual void EmitWin64EHStartProc(const MCSymbol *Symbol);
virtual void EmitWin64EHEndProc();
virtual void EmitRegSave(const SmallVectorImpl<unsigned> &RegList,
bool isVector);
+ /// PPC-related methods.
+ /// FIXME: Eventually replace it with some "target MC streamer" and move
+ /// these methods there.
+ virtual void EmitTCEntry(const MCSymbol &S);
+
+ /// FinishImpl - Streamer specific finalization.
+ virtual void FinishImpl() = 0;
/// Finish - Finish emission of machine code.
- virtual void Finish() = 0;
+ void Finish();
};
/// createNullStreamer - Create a dummy machine code streamer, which does
/// InstPrint.
///
/// \param CE - If given, a code emitter to use to show the instruction
- /// encoding inline with the assembly. This method takes ownership of \arg CE.
+ /// encoding inline with the assembly. This method takes ownership of \p CE.
///
/// \param TAB - If given, a target asm backend to use to show the fixup
/// information in conjunction with encoding information. This method takes
- /// ownership of \arg TAB.
+ /// ownership of \p TAB.
///
/// \param ShowInst - Whether to show the MCInst representation inline with
/// the assembly.
- ///
- /// \param DecodeLSDA - If true, emit comments that translates the LSDA into a
- /// human readable format. Only usable with CFI.
MCStreamer *createAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
bool isVerboseAsm,
bool useLoc,
/// createMachOStreamer - Create a machine code streamer which will generate
/// Mach-O format object files.
///
- /// Takes ownership of \arg TAB and \arg CE.
+ /// Takes ownership of \p TAB and \p CE.
MCStreamer *createMachOStreamer(MCContext &Ctx, MCAsmBackend &TAB,
raw_ostream &OS, MCCodeEmitter *CE,
bool RelaxAll = false);
/// createWinCOFFStreamer - Create a machine code streamer which will
/// generate Microsoft COFF format object files.
///
- /// Takes ownership of \arg TAB and \arg CE.
+ /// Takes ownership of \p TAB and \p CE.
MCStreamer *createWinCOFFStreamer(MCContext &Ctx,
MCAsmBackend &TAB,
MCCodeEmitter &CE, raw_ostream &OS,
/// createELFStreamer - Create a machine code streamer which will generate
/// ELF format object files.
MCStreamer *createELFStreamer(MCContext &Ctx, MCAsmBackend &TAB,
- raw_ostream &OS, MCCodeEmitter *CE,
- bool RelaxAll, bool NoExecStack);
-
- /// createLoggingStreamer - Create a machine code streamer which just logs the
- /// API calls and then dispatches to another streamer.
- ///
- /// The new streamer takes ownership of the \arg Child.
- MCStreamer *createLoggingStreamer(MCStreamer *Child, raw_ostream &OS);
+ raw_ostream &OS, MCCodeEmitter *CE,
+ bool RelaxAll, bool NoExecStack);
/// createPureStreamer - Create a machine code streamer which will generate
/// "pure" MC object files, for use with MC-JIT and testing tools.
///
- /// Takes ownership of \arg TAB and \arg CE.
+ /// Takes ownership of \p TAB and \p CE.
MCStreamer *createPureStreamer(MCContext &Ctx, MCAsmBackend &TAB,
raw_ostream &OS, MCCodeEmitter *CE);
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