9#ifndef LLVM_MC_MCOBJECTSTREAMER_H
10#define LLVM_MC_MCOBJECTSTREAMER_H
40 std::unique_ptr<MCAssembler> Assembler;
45 struct PendingAssignment {
69 std::unique_ptr<MCObjectWriter> OW,
70 std::unique_ptr<MCCodeEmitter>
Emitter);
75 void reset()
override;
101 template <
typename FT,
typename... Args>
103 auto *
F =
new (SpecialFragAllocator.Allocate(
sizeof(FT),
alignof(FT)))
104 FT(std::forward<Args>(
args)...);
105 addSpecialFragment(
F);
137 unsigned MaxBytesToEmit = 0)
override;
139 unsigned MaxBytesToEmit = 0)
override;
143 unsigned Flags,
unsigned Isa,
144 unsigned Discriminator,
StringRef FileName,
147 const MCSymbol *Label,
148 unsigned PointerSize)
override;
150 MCSymbol *EndLabel =
nullptr)
override;
152 const MCSymbol *Label, SMLoc Loc);
154 unsigned Column,
bool PrologueEnd,
bool IsStmt,
155 StringRef FileName, SMLoc Loc)
override;
157 const MCSymbol *End)
override;
159 unsigned SourceFileId,
160 unsigned SourceLineNum,
161 const MCSymbol *FnStartSym,
162 const MCSymbol *FnEndSym)
override;
164 ArrayRef<std::pair<const MCSymbol *, const MCSymbol *>> Ranges,
165 StringRef FixedSizePortion)
override;
170 const MCExpr *Expr, SMLoc Loc = {})
override;
172 void emitFill(
const MCExpr &NumBytes, uint64_t FillValue,
173 SMLoc Loc = SMLoc())
override;
174 void emitFill(
const MCExpr &NumValues, int64_t
Size, int64_t Expr,
175 SMLoc Loc = SMLoc())
override;
176 void emitNops(int64_t NumBytes, int64_t ControlledNopLength, SMLoc Loc,
177 const MCSubtargetInfo &STI)
override;
180 StringRef TimeStamp, StringRef Description)
override;
197 unsigned Size)
override;
200 const MCSymbol *
Lo)
override;
dxil DXContainer Global Emitter
static ManagedStatic< cl::opt< bool, true >, CreateDebug > Debug
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.
MCCodeEmitter - Generic instruction encoding interface.
Context object for machine code objects.
Base class for the full range of assembler expressions which are needed for parsing.
Instances of this class represent a single low-level machine instruction.
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.
FT * newSpecialFragment(Args &&...args)
void emitValueToAlignment(Align Alignment, int64_t Fill=0, uint8_t FillLen=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 emitCFISections(bool EH, bool Debug, bool SFrame) override
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
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.
MCAssembler & getAssembler()
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 emitWeakReference(MCSymbol *Alias, const MCSymbol *Target) override
Emit an weak reference from Alias to Symbol.
void appendContents(ArrayRef< char > Contents)
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 emitRelocDirective(const MCExpr &Offset, StringRef Name, const MCExpr *Expr, SMLoc Loc={}) override
Record a relocation described by the .reloc directive.
void emitBytes(StringRef Data) override
Emit the bytes in Data into the output.
void emitPendingAssignments(MCSymbol *Symbol)
Emits pending conditional assignments that depend on Symbol being emitted.
void addFixup(const MCExpr *Value, MCFixupKind Kind)
void emitFileDirective(StringRef Filename) override
Switch to a new logical file.
void emitDwarfLocDirective(unsigned FileNo, unsigned Line, unsigned Column, unsigned Flags, unsigned Isa, unsigned Discriminator, StringRef FileName, StringRef Comment={}) override
This implements the DWARF2 '.loc fileno lineno ...' assembler directive.
MCSymbol * emitCFILabel() override
When emitting an object file, create and emit a real label.
void emitCVDefRangeDirective(ArrayRef< std::pair< const MCSymbol *, const MCSymbol * > > Ranges, StringRef FixedSizePortion) override
This implements the CodeView '.cv_def_range' assembler directive.
MCAssembler * getAssemblerPtr() override
void emitAddrsigSym(const MCSymbol *Sym) override
bool isIntegratedAssemblerRequired() const override
Object streamers require the integrated assembler.
void emitDwarfLineEndEntry(MCSection *Section, MCSymbol *LastLabel, MCSymbol *EndLabel=nullptr) override
Emit the debug line end entry.
void emitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override
Emit the given Instruction into the current section.
void visitUsedSymbol(const MCSymbol &Sym) override
void emitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &)
Emit an instruction to a special fragment, because this instruction can change its size during relaxa...
virtual void emitLabelAtPos(MCSymbol *Symbol, SMLoc Loc, MCFragment &F, uint64_t Offset)
void emitLabel(MCSymbol *Symbol, SMLoc Loc=SMLoc()) override
Emit a label for Symbol into the current section.
MCObjectStreamer(MCContext &Context, std::unique_ptr< MCAsmBackend > TAB, std::unique_ptr< MCObjectWriter > OW, std::unique_ptr< MCCodeEmitter > Emitter)
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 changeSection(MCSection *Section, uint32_t Subsection=0) override
This is called by popSection and switchSection, if the current section changes.
void emitAbsoluteSymbolDiffAsULEB128(const MCSymbol *Hi, const MCSymbol *Lo) override
Emit the absolute difference between two symbols encoded with ULEB128.
MCFragment * allocFragSpace(size_t Headroom)
void emitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel, const MCSymbol *Label, SMLoc Loc)
bool mayHaveInstructions(MCSection &Sec) const override
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 ensureHeadroom(size_t Headroom)
void emitCVFileChecksumOffsetDirective(unsigned FileNo) override
This implements the CodeView '.cv_filechecksumoffset' assembler directive.
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 emitValueToOffset(const MCExpr *Offset, unsigned char Value, SMLoc Loc) override
Emit some number of copies of Value until the byte offset Offset is reached.
uint8_t * getCurFragEnd() const
void emitAbsoluteSymbolDiff(const MCSymbol *Hi, const MCSymbol *Lo, unsigned Size) override
Emit the absolute difference between two symbols if possible.
Defines the object file and target independent interfaces used by the assembler backend to write nati...
Instances of this class represent a uniqued identifier for a section in the current translation unit.
MCStreamer(MCContext &Ctx)
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.
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.
Target - Wrapper for Target specific information.
LLVM Value Representation.
This class implements an extremely fast bulk output stream that can only output to a stream.
An abstract base class for streams implementations that also support a pwrite operation.
This is an optimization pass for GlobalISel generic memory operations.
uint16_t MCFixupKind
Extensible enumeration to represent the type of a fixup.
BumpPtrAllocatorImpl BumpPtrAllocator
The standard BumpPtrAllocator which just uses the default template parameters.
FunctionAddr VTableAddr uintptr_t uintptr_t Data
ArrayRef(const T &OneElt) -> ArrayRef< T >
This struct is a compact representation of a valid (non-zero power of two) alignment.