9#ifndef LLVM_MC_MCOBJECTSTREAMER_H
10#define LLVM_MC_MCOBJECTSTREAMER_H
24struct MCDwarfFrameInfo;
33class raw_pwrite_stream;
43 std::unique_ptr<MCAssembler> Assembler;
49 unsigned CurSubsectionIdx = 0;
50 struct PendingMCFixup {
59 struct PendingAssignment {
74 void resolvePendingFixups();
78 std::unique_ptr<MCObjectWriter> OW,
79 std::unique_ptr<MCCodeEmitter>
Emitter);
84 void reset()
override;
98 F->setParent(CurSection);
156 unsigned ValueSize = 1,
157 unsigned MaxBytesToEmit = 0)
override;
159 unsigned MaxBytesToEmit = 0)
override;
163 unsigned Flags,
unsigned Isa,
164 unsigned Discriminator,
168 unsigned PointerSize)
override;
173 unsigned Column,
bool PrologueEnd,
bool IsStmt,
178 unsigned SourceFileId,
179 unsigned SourceLineNum,
183 ArrayRef<std::pair<const MCSymbol *, const MCSymbol *>> Ranges,
194 std::optional<std::pair<bool, std::string>>
202 void emitNops(int64_t NumBytes, int64_t ControlledNopLength,
SMLoc Loc,
223 unsigned Size)
override;
dxil DXContainer Global Emitter
PowerPC TLS Dynamic Call Fixup
This file implements a set that has insertion order iteration characteristics.
This file defines the SmallVector class.
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory),...
Generic interface to target specific assembler backends.
Context object for machine code objects.
Fragment for data and encoded instructions.
Base class for the full range of assembler expressions which are needed for parsing.
Encode information on a single operation to perform on a byte sequence (e.g., an encoded instruction)...
Instances of this class represent a single low-level machine instruction.
Streaming object file generation interface.
void reset() override
state management
void emitFill(const MCExpr &NumBytes, uint64_t FillValue, SMLoc Loc=SMLoc()) override
Emit Size bytes worth of the value specified by FillValue.
void emitDwarfLineEndEntry(MCSection *Section, MCSymbol *LastLabel) override
Emit the debug line end entry.
void emitValueToAlignment(Align Alignment, int64_t Value=0, unsigned ValueSize=1, unsigned MaxBytesToEmit=0) override
Emit some number of copies of Value until the byte alignment ByteAlignment is reached.
void emitAssignment(MCSymbol *Symbol, const MCExpr *Value) override
Emit an assignment of Value to Symbol.
void emitULEB128Value(const MCExpr *Value) override
void emitSLEB128Value(const MCExpr *Value) override
void emitNops(int64_t NumBytes, int64_t ControlledNopLength, SMLoc Loc, const MCSubtargetInfo &STI) override
MCDataFragment * getOrCreateDataFragment(const MCSubtargetInfo *STI=nullptr)
Get a data fragment to write into, creating a new one if the current fragment is not a data fragment.
void emitCVInlineLinetableDirective(unsigned PrimaryFunctionId, unsigned SourceFileId, unsigned SourceLineNum, const MCSymbol *FnStartSym, const MCSymbol *FnEndSym) override
This implements the CodeView '.cv_inline_linetable' assembler directive.
void emitCVStringTableDirective() override
This implements the CodeView '.cv_stringtable' assembler directive.
void emitBundleAlignMode(Align Alignment) override
Set the bundle alignment mode from now on in the section.
MCAssembler & getAssembler()
void emitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override
Emit an weak reference from Alias to Symbol.
void emitDwarfAdvanceLineAddr(int64_t LineDelta, const MCSymbol *LastLabel, const MCSymbol *Label, unsigned PointerSize) override
If targets does not support representing debug line section by .loc/.file directives in assembly outp...
void emitCVLocDirective(unsigned FunctionId, unsigned FileNo, unsigned Line, unsigned Column, bool PrologueEnd, bool IsStmt, StringRef FileName, SMLoc Loc) override
This implements the CodeView '.cv_loc' assembler directive.
void emitDTPRel32Value(const MCExpr *Value) override
Emit the expression Value into the output as a dtprel (32-bit DTP relative) value.
void emitBytes(StringRef Data) override
Emit the bytes in Data into the output.
void emitBundleLock(bool AlignToEnd) override
The following instructions are a bundle-locked group.
void emitPendingAssignments(MCSymbol *Symbol)
Emits pending conditional assignments that depend on Symbol being emitted.
void emitFileDirective(StringRef Filename) override
Switch to a new logical file.
void emitCVDefRangeDirective(ArrayRef< std::pair< const MCSymbol *, const MCSymbol * > > Ranges, StringRef FixedSizePortion) override
This implements the CodeView '.cv_def_range' assembler directive.
void emitGPRel64Value(const MCExpr *Value) override
Emit the expression Value into the output as a gprel64 (64-bit GP relative) value.
MCAssembler * getAssemblerPtr() override
void flushPendingLabels()
Create a data fragment for any pending labels across all Sections and Subsections.
virtual void emitLabelAtPos(MCSymbol *Symbol, SMLoc Loc, MCFragment *F, uint64_t Offset)
std::optional< std::pair< bool, std::string > > emitRelocDirective(const MCExpr &Offset, StringRef Name, const MCExpr *Expr, SMLoc Loc, const MCSubtargetInfo &STI) override
Record a relocation described by the .reloc directive.
void emitAddrsigSym(const MCSymbol *Sym) override
bool isIntegratedAssemblerRequired() const override
Object streamers require the integrated assembler.
void emitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override
Emit the given Instruction into the current section.
void visitUsedSymbol(const MCSymbol &Sym) override
void emitGPRel32Value(const MCExpr *Value) override
Emit the expression Value into the output as a gprel32 (32-bit GP relative) value.
void insert(MCFragment *F)
virtual void emitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &)
Emit an instruction to a special fragment, because this instruction can change its size during relaxa...
void emitLabel(MCSymbol *Symbol, SMLoc Loc=SMLoc()) override
Emit a label for Symbol into the current section.
void emitValueImpl(const MCExpr *Value, unsigned Size, SMLoc Loc=SMLoc()) override
Emit the expression Value into the output as a native integer of the given Size bytes.
void finishImpl() override
Streamer specific finalization.
void emitAbsoluteSymbolDiffAsULEB128(const MCSymbol *Hi, const MCSymbol *Lo) override
Emit the absolute difference between two symbols encoded with ULEB128.
void emitBundleUnlock() override
Ends a bundle-locked group.
bool changeSectionImpl(MCSection *Section, const MCExpr *Subsection)
void emitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel, const MCSymbol *Label, SMLoc Loc)
void emitCFISections(bool EH, bool Debug) override
void emitDwarfLocDirective(unsigned FileNo, unsigned Line, unsigned Column, unsigned Flags, unsigned Isa, unsigned Discriminator, StringRef FileName) override
This implements the DWARF2 '.loc fileno lineno ...' assembler directive.
void addPendingLabel(MCSymbol *label)
Assign a label to the current Section and Subsection even though a fragment is not yet present.
bool mayHaveInstructions(MCSection &Sec) const override
MCFragment * getCurrentFragment() const
void emitCodeAlignment(Align ByteAlignment, const MCSubtargetInfo *STI, unsigned MaxBytesToEmit=0) override
Emit nops until the byte alignment ByteAlignment is reached.
void emitFrames(MCAsmBackend *MAB)
void changeSection(MCSection *Section, const MCExpr *Subsection) override
Update streamer for a new active section.
void emitTPRel64Value(const MCExpr *Value) override
Emit the expression Value into the output as a tprel (64-bit TP relative) value.
void emitCVFileChecksumOffsetDirective(unsigned FileNo) override
This implements the CodeView '.cv_filechecksumoffset' assembler directive.
void emitTPRel32Value(const MCExpr *Value) override
Emit the expression Value into the output as a tprel (32-bit TP relative) value.
void emitAddrsig() override
void emitConditionalAssignment(MCSymbol *Symbol, const MCExpr *Value) override
Emit an assignment of Value to Symbol, but only if Value is also emitted.
void emitCVFileChecksumsDirective() override
This implements the CodeView '.cv_filechecksums' assembler directive.
void emitCVLinetableDirective(unsigned FunctionId, const MCSymbol *Begin, const MCSymbol *End) override
This implements the CodeView '.cv_linetable' assembler directive.
void emitDTPRel64Value(const MCExpr *Value) override
Emit the expression Value into the output as a dtprel (64-bit DTP relative) value.
void emitValueToOffset(const MCExpr *Offset, unsigned char Value, SMLoc Loc) override
Emit some number of copies of Value until the byte offset Offset is reached.
void emitAbsoluteSymbolDiff(const MCSymbol *Hi, const MCSymbol *Lo, unsigned Size) override
Emit the absolute difference between two symbols if possible.
Instances of this class represent a uniqued identifier for a section in the current translation unit.
MCSection::FragmentListType & getFragmentList()
FragmentListType::iterator iterator
Streaming machine code generation interface.
MCSection * getCurrentSectionOnly() const
void emitFill(uint64_t NumBytes, uint8_t FillValue)
Emit NumBytes bytes worth of the value specified by FillValue.
Generic base class for all target subtargets.
MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...
Represents a location in source code.
A SetVector that performs no allocations if smaller than a certain size.
This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.
StringRef - Represent a constant reference to a string, i.e.
LLVM Value Representation.
iterator insert(iterator where, pointer New)
This is an optimization pass for GlobalISel generic memory operations.
This struct is a compact representation of a valid (non-zero power of two) alignment.