#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCDirectives.h"
#include "llvm/MC/MCDwarf.h"
+#include "llvm/MC/MCLinkerOptimizationHint.h"
#include "llvm/MC/MCWin64EH.h"
#include "llvm/Support/DataTypes.h"
#include <string>
class MCSection;
class MCStreamer;
class MCSymbol;
+class MCSymbolRefExpr;
+class MCSubtargetInfo;
class StringRef;
class Twine;
class raw_ostream;
class formatted_raw_ostream;
+class AssemblerConstantPools;
typedef std::pair<const MCSection *, const MCExpr *> MCSectionSubPair;
/// be treated differently. Callers should always talk to a FooTargetStreamer.
class MCTargetStreamer {
protected:
- MCStreamer *Streamer;
+ MCStreamer &Streamer;
public:
+ MCTargetStreamer(MCStreamer &S);
virtual ~MCTargetStreamer();
- void setStreamer(MCStreamer *S) { Streamer = S; }
+
+ const MCStreamer &getStreamer() { return Streamer; }
+
+ // Allow a target to add behavior to the EmitLabel of MCStreamer.
+ virtual void emitLabel(MCSymbol *Symbol);
+ // Allow a target to add behavior to the emitAssignment of MCStreamer.
+ virtual void emitAssignment(MCSymbol *Symbol, const MCExpr *Value);
+
+ virtual void finish();
+};
+
+class AArch64TargetStreamer : public MCTargetStreamer {
+public:
+ AArch64TargetStreamer(MCStreamer &S);
+ ~AArch64TargetStreamer();
+
+
+ void finish() override;
+
+ /// Callback used to implement the ldr= pseudo.
+ /// Add a new entry to the constant pool for the current section and return an
+ /// MCExpr that can be used to refer to the constant pool location.
+ const MCExpr *addConstantPoolEntry(const MCExpr *);
+
+ /// Callback used to implemnt the .ltorg directive.
+ /// Emit contents of constant pool for the current section.
+ void emitCurrentConstantPool();
+
+private:
+ std::unique_ptr<AssemblerConstantPools> ConstantPools;
};
// FIXME: declared here because it is used from
// lib/CodeGen/AsmPrinter/ARMException.cpp.
class ARMTargetStreamer : public MCTargetStreamer {
- virtual void anchor();
public:
- virtual void emitFnStart() = 0;
- virtual void emitFnEnd() = 0;
- virtual void emitCantUnwind() = 0;
- virtual void emitPersonality(const MCSymbol *Personality) = 0;
- virtual void emitHandlerData() = 0;
+ ARMTargetStreamer(MCStreamer &S);
+ ~ARMTargetStreamer();
+
+ virtual void emitFnStart();
+ virtual void emitFnEnd();
+ virtual void emitCantUnwind();
+ virtual void emitPersonality(const MCSymbol *Personality);
+ virtual void emitPersonalityIndex(unsigned Index);
+ virtual void emitHandlerData();
virtual void emitSetFP(unsigned FpReg, unsigned SpReg,
- int64_t Offset = 0) = 0;
- virtual void emitPad(int64_t Offset) = 0;
+ int64_t Offset = 0);
+ virtual void emitMovSP(unsigned Reg, int64_t Offset = 0);
+ virtual void emitPad(int64_t Offset);
virtual void emitRegSave(const SmallVectorImpl<unsigned> &RegList,
- bool isVector) = 0;
-
- virtual void switchVendor(StringRef Vendor) = 0;
- virtual void emitAttribute(unsigned Attribute, unsigned Value) = 0;
- virtual void emitTextAttribute(unsigned Attribute, StringRef String) = 0;
- virtual void emitFPU(unsigned FPU) = 0;
- virtual void emitArch(unsigned Arch) = 0;
- virtual void finishAttributeSection() = 0;
- virtual void emitInst(uint32_t Inst, char Suffix = '\0') = 0;
+ bool isVector);
+ virtual void emitUnwindRaw(int64_t StackOffset,
+ const SmallVectorImpl<uint8_t> &Opcodes);
+
+ virtual void switchVendor(StringRef Vendor);
+ virtual void emitAttribute(unsigned Attribute, unsigned Value);
+ virtual void emitTextAttribute(unsigned Attribute, StringRef String);
+ virtual void emitIntTextAttribute(unsigned Attribute, unsigned IntValue,
+ StringRef StringValue = "");
+ virtual void emitFPU(unsigned FPU);
+ virtual void emitArch(unsigned Arch);
+ virtual void emitObjectArch(unsigned Arch);
+ virtual void finishAttributeSection();
+ virtual void emitInst(uint32_t Inst, char Suffix = '\0');
+
+ virtual void AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *SRE);
+
+ virtual void emitThumbSet(MCSymbol *Symbol, const MCExpr *Value);
+
+ void finish() override;
+
+ /// Callback used to implement the ldr= pseudo.
+ /// Add a new entry to the constant pool for the current section and return an
+ /// MCExpr that can be used to refer to the constant pool location.
+ const MCExpr *addConstantPoolEntry(const MCExpr *);
+
+ /// Callback used to implemnt the .ltorg directive.
+ /// Emit contents of constant pool for the current section.
+ void emitCurrentConstantPool();
+
+private:
+ std::unique_ptr<AssemblerConstantPools> ConstantPools;
};
/// MCStreamer - Streaming machine code generation interface. This interface
///
class MCStreamer {
MCContext &Context;
- OwningPtr<MCTargetStreamer> TargetStreamer;
+ std::unique_ptr<MCTargetStreamer> TargetStreamer;
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 setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame);
void EnsureValidW64UnwindInfo();
- MCSymbol *LastSymbol;
-
// SymbolOrdering - Tracks an index to represent the order
// a symbol was emitted in. Zero means we did not emit that symbol.
DenseMap<const MCSymbol *, unsigned> SymbolOrdering;
/// values saved by PushSection.
SmallVector<std::pair<MCSectionSubPair, MCSectionSubPair>, 4> SectionStack;
- bool AutoInitSections;
-
protected:
- MCStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer);
+ MCStreamer(MCContext &Ctx);
const MCExpr *BuildSymbolDiff(MCContext &Context, const MCSymbol *A,
const MCSymbol *B);
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(MCAsmBackend *MAB, bool usingCFI);
MCWin64EHUnwindInfo *getCurrentW64UnwindInfo() {
return CurrentW64UnwindInfo;
public:
virtual ~MCStreamer();
+ void visitUsedExpr(const MCExpr &Expr);
+ virtual void visitUsedSymbol(const MCSymbol &Sym);
+
+ void setTargetStreamer(MCTargetStreamer *TS) {
+ TargetStreamer.reset(TS);
+ }
+
/// State management
///
virtual void reset();
MCContext &getContext() const { return Context; }
- MCTargetStreamer &getTargetStreamer() {
- assert(TargetStreamer);
- return *TargetStreamer;
+ MCTargetStreamer *getTargetStreamer() {
+ return TargetStreamer.get();
}
unsigned getNumFrameInfos() { return FrameInfos.size(); }
/// unformatted text to the .s file with EmitRawText.
virtual bool hasRawTextSupport() const { return false; }
+ /// Is the integrated assembler required for this streamer to function
+ /// correctly?
+ virtual bool isIntegratedAssemblerRequired() const { return false; }
+
/// AddComment - Add a comment that can be emitted to the generated .s
/// file if applicable as a QoI issue to make the output of the compiler
/// more readable. This only affects the MCAsmStreamer, and only when
/// use this method.
virtual raw_ostream &GetCommentOS();
+ /// Print T and prefix it with the comment string (normally #) and optionally
+ /// a tab. This prints the comment immediately, not at the end of the
+ /// current line. It is basically a safe version of EmitRawText: since it
+ /// only prints comments, the object streamer ignores it instead of asserting.
+ virtual void emitRawComment(const Twine &T, bool TabPrefix = true);
+
/// AddBlankLine - Emit a blank line to a .s file to pretty it up.
virtual void AddBlankLine() {}
///
/// This is called by PopSection and SwitchSection, if the current
/// section changes.
- virtual void ChangeSection(const MCSection *, const MCExpr *) = 0;
+ virtual void ChangeSection(const MCSection *, const MCExpr *);
/// pushSection - Save the current and previous section on the
/// section stack.
/// @p Section. This is required to update CurSection.
///
/// This corresponds to assembler directives like .section, .text, etc.
- void SwitchSection(const MCSection *Section, const MCExpr *Subsection = 0) {
+ void SwitchSection(const MCSection *Section,
+ const MCExpr *Subsection = nullptr) {
assert(Section && "Cannot switch to a null section!");
MCSectionSubPair curSection = SectionStack.back().first;
SectionStack.back().second = curSection;
/// emitted to @p Section. This is required to update CurSection. This
/// version does not call ChangeSection.
void SwitchSectionNoChange(const MCSection *Section,
- const MCExpr *Subsection = 0) {
+ const MCExpr *Subsection = nullptr) {
assert(Section && "Cannot switch to a null section!");
MCSectionSubPair curSection = SectionStack.back().first;
SectionStack.back().second = curSection;
SectionStack.back().first = MCSectionSubPair(Section, Subsection);
}
- /// 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;
-
- /// InitToTextSection - Create a text section and switch the streamer to it.
- virtual void InitToTextSection() = 0;
+ /// Create the default sections and set the initial one.
+ virtual void InitSections();
/// AssignSection - Sets the symbol's section.
///
// add the section we're emitting it to later.
virtual void EmitLabel(MCSymbol *Symbol);
- virtual void EmitDebugLabel(MCSymbol *Symbol);
-
virtual void EmitEHSymAttributes(const MCSymbol *Symbol, MCSymbol *EHSymbol);
/// EmitAssemblerFlag - Note in the output the specified @p Flag.
- virtual void EmitAssemblerFlag(MCAssemblerFlag Flag) = 0;
+ virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
/// EmitLinkerOptions - Emit the given list @p Options of strings as linker
/// options into the output.
/// EmitDataRegion - Note in the output the specified region @p Kind.
virtual void EmitDataRegion(MCDataRegionType Kind) {}
+ /// EmitVersionMin - Specify the MachO minimum deployment target version.
+ virtual void EmitVersionMin(MCVersionMinType, unsigned Major, unsigned Minor,
+ unsigned Update) {}
+
/// EmitThumbFunc - Note in the output that the specified @p Func is
/// a Thumb mode function (ARM target only).
- virtual void EmitThumbFunc(MCSymbol *Func) = 0;
-
- /// getOrCreateSymbolData - Get symbol data for given symbol.
- virtual MCSymbolData &getOrCreateSymbolData(MCSymbol *Symbol);
+ virtual void EmitThumbFunc(MCSymbol *Func);
/// EmitAssignment - Emit an assignment of @p Value to @p Symbol.
///
///
/// @param Symbol - The symbol being assigned to.
/// @param Value - The value for the symbol.
- virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) = 0;
+ virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
/// EmitWeakReference - Emit an weak reference from @p Alias to @p Symbol.
///
///
/// @param Alias - The alias that is being created.
/// @param Symbol - The symbol being aliased.
- virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) = 0;
+ virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol);
/// EmitSymbolAttribute - Add the given @p Attribute to @p Symbol.
virtual bool EmitSymbolAttribute(MCSymbol *Symbol,
///
/// @param Symbol - The symbol to have its n_desc field set.
/// @param DescValue - The value to set into the n_desc field.
- virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) = 0;
+ virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
/// BeginCOFFSymbolDef - Start emitting COFF symbol definition
///
/// @param Symbol - The symbol to have its External & Type fields set.
- virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol) = 0;
+ virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol);
/// EmitCOFFSymbolStorageClass - Emit the storage class of the symbol.
///
/// @param StorageClass - The storage class the symbol should have.
- virtual void EmitCOFFSymbolStorageClass(int StorageClass) = 0;
+ virtual void EmitCOFFSymbolStorageClass(int StorageClass);
/// EmitCOFFSymbolType - Emit the type of the symbol.
///
/// @param Type - A COFF type identifier (see COFF::SymbolType in X86COFF.h)
- virtual void EmitCOFFSymbolType(int Type) = 0;
+ virtual void EmitCOFFSymbolType(int Type);
/// EndCOFFSymbolDef - Marks the end of the symbol definition.
- virtual void EndCOFFSymbolDef() = 0;
+ virtual void EndCOFFSymbolDef();
+
+ /// EmitCOFFSectionIndex - Emits a COFF section index.
+ ///
+ /// @param Symbol - Symbol the section number relocation should point to.
+ virtual void EmitCOFFSectionIndex(MCSymbol const *Symbol);
/// EmitCOFFSecRel32 - Emits a COFF section relative relocation.
///
/// This corresponds to an assembler statement such as:
/// .size symbol, expression
///
- virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) = 0;
+ virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value);
+
+ /// \brief Emit a Linker Optimization Hint (LOH) directive.
+ /// \param Args - Arguments of the LOH.
+ virtual void EmitLOHDirective(MCLOHType Kind, const MCLOHArgs &Args) {}
/// EmitCommonSymbol - Emit a common symbol.
///
/// @param Size - The size of the common symbol.
/// @param ByteAlignment - The alignment of the common symbol in bytes.
virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
- unsigned ByteAlignment) = 0;
+ unsigned ByteAlignment);
/// EmitZerofill - Emit the zerofill section and an optional symbol.
///
/// @param Size - The size of the zerofill symbol.
/// @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,
- uint64_t Size = 0, unsigned ByteAlignment = 0) = 0;
+ virtual void EmitZerofill(const MCSection *Section,
+ MCSymbol *Symbol = nullptr, uint64_t Size = 0,
+ unsigned ByteAlignment = 0) = 0;
/// EmitTBSSSymbol - Emit a thread local bss (.tbss) symbol.
///
/// @param ByteAlignment - The alignment of the thread local common symbol
/// if non-zero. This must be a power of 2 on some targets.
virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
- uint64_t Size, unsigned ByteAlignment = 0) = 0;
+ uint64_t Size, unsigned ByteAlignment = 0);
/// @}
/// @name Generating Data
///
/// This is used to implement assembler directives such as .byte, .ascii,
/// etc.
- virtual void EmitBytes(StringRef Data) = 0;
+ virtual void EmitBytes(StringRef Data);
/// EmitValue - Emit the expression @p Value into the output as a native
/// integer of the given @p Size bytes.
/// @param Value - The value to emit.
/// @param Size - The size of the integer (in bytes) to emit. This must
/// match a native machine width.
- virtual void EmitValueImpl(const MCExpr *Value, unsigned Size) = 0;
+ /// @param Loc - The location of the expression for error reporting.
+ virtual void EmitValueImpl(const MCExpr *Value, unsigned Size,
+ const SMLoc &Loc = SMLoc());
- void EmitValue(const MCExpr *Value, unsigned Size);
+ void EmitValue(const MCExpr *Value, unsigned Size,
+ const SMLoc &Loc = SMLoc());
/// EmitIntValue - Special case of EmitValue that avoids the client having
/// to pass in a MCExpr for constant integers.
/// .long foo
void EmitAbsValue(const MCExpr *Value, unsigned Size);
- virtual void EmitULEB128Value(const MCExpr *Value) = 0;
+ virtual void EmitULEB128Value(const MCExpr *Value);
- virtual void EmitSLEB128Value(const MCExpr *Value) = 0;
+ virtual void EmitSLEB128Value(const MCExpr *Value);
/// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
/// client having to pass in a MCExpr for constant integers.
/// emitted.
virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0,
unsigned ValueSize = 1,
- unsigned MaxBytesToEmit = 0) = 0;
+ unsigned MaxBytesToEmit = 0);
/// EmitCodeAlignment - Emit nops until the byte alignment @p ByteAlignment
/// is reached.
/// the alignment cannot be reached in this many bytes, no bytes are
/// emitted.
virtual void EmitCodeAlignment(unsigned ByteAlignment,
- unsigned MaxBytesToEmit = 0) = 0;
+ unsigned MaxBytesToEmit = 0);
/// EmitValueToOffset - Emit some number of copies of @p Value until the
/// byte offset @p Offset is reached.
/// @param Value - The value to use when filling bytes.
/// @return false on success, true if the offset was invalid.
virtual bool EmitValueToOffset(const MCExpr *Offset,
- unsigned char Value = 0) = 0;
+ unsigned char Value = 0);
/// @}
/// EmitFileDirective - Switch to a new logical file. This is used to
/// implement the '.file "foo.c"' assembler directive.
- virtual void EmitFileDirective(StringRef Filename) = 0;
+ virtual void EmitFileDirective(StringRef Filename);
/// Emit the "identifiers" directive. This implements the
/// '.ident "version foo"' assembler directive.
/// EmitDwarfFileDirective - Associate a filename with a specified logical
/// file number. This implements the DWARF2 '.file 4 "foo.c"' assembler
/// directive.
- virtual bool EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
- StringRef Filename, unsigned CUID = 0);
+ virtual unsigned EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
+ StringRef Filename,
+ unsigned CUID = 0);
/// EmitDwarfLocDirective - This implements the DWARF2
// '.loc fileno lineno ...' assembler directive.
unsigned Isa, unsigned Discriminator,
StringRef FileName);
- virtual void EmitDwarfAdvanceLineAddr(int64_t LineDelta,
- const MCSymbol *LastLabel,
- const MCSymbol *Label,
- unsigned PointerSize) = 0;
-
- virtual void EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
- const MCSymbol *Label) {}
+ virtual MCSymbol *getDwarfLineTableSymbol(unsigned CUID);
void EmitDwarfSetLineAddr(int64_t LineDelta, const MCSymbol *Label,
int PointerSize);
virtual void EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding);
virtual void EmitCFISections(bool EH, bool Debug);
- void EmitCFIStartProc();
+ void EmitCFIStartProc(bool IsSimple);
void EmitCFIEndProc();
virtual void EmitCFIDefCfa(int64_t Register, int64_t Offset);
virtual void EmitCFIDefCfaOffset(int64_t Offset);
/// EmitInstruction - Emit the given @p Instruction into the current
/// section.
- virtual void EmitInstruction(const MCInst &Inst) = 0;
+ virtual void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI);
/// \brief Set the bundle alignment mode from now on in the section.
/// The argument is the power of 2 to which the alignment is set. The
/// value 0 means turn the bundle alignment off.
- virtual void EmitBundleAlignMode(unsigned AlignPow2) = 0;
+ virtual void EmitBundleAlignMode(unsigned AlignPow2);
/// \brief The following instructions are a bundle-locked group.
///
/// \param AlignToEnd - If true, the bundle-locked group will be aligned to
/// the end of a bundle.
- virtual void EmitBundleLock(bool AlignToEnd) = 0;
+ virtual void EmitBundleLock(bool AlignToEnd);
/// \brief Ends a bundle-locked group.
- virtual void EmitBundleUnlock() = 0;
+ virtual void EmitBundleUnlock();
/// EmitRawText - If this file is backed by a assembly streamer, this dumps
/// the specified string in the output .s file. This capability is
virtual void Flush() {}
/// FinishImpl - Streamer specific finalization.
- virtual void FinishImpl() = 0;
+ virtual void FinishImpl();
/// Finish - Finish emission of machine code.
void Finish();
+
+ virtual bool mayHaveInstructions() const { return true; }
};
/// createNullStreamer - Create a dummy machine code streamer, which does
///
/// \param ShowInst - Whether to show the MCInst representation inline with
/// the assembly.
-MCStreamer *createAsmStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer,
- formatted_raw_ostream &OS, bool isVerboseAsm,
- bool useLoc, bool useCFI, bool useDwarfDirectory,
- MCInstPrinter *InstPrint = 0,
- MCCodeEmitter *CE = 0, MCAsmBackend *TAB = 0,
- bool ShowInst = false);
+MCStreamer *createAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
+ bool isVerboseAsm, bool useDwarfDirectory,
+ MCInstPrinter *InstPrint, MCCodeEmitter *CE,
+ MCAsmBackend *TAB, bool ShowInst);
/// createMachOStreamer - Create a machine code streamer which will generate
/// Mach-O format object files.
/// 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 \p TAB and \p CE.
-MCStreamer *createWinCOFFStreamer(MCContext &Ctx, MCAsmBackend &TAB,
- MCCodeEmitter &CE, raw_ostream &OS,
- bool RelaxAll = false);
+ bool RelaxAll = false,
+ bool LabelSections = false);
/// createELFStreamer - Create a machine code streamer which will generate
/// ELF format object files.
-MCStreamer *createELFStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer,
- MCAsmBackend &TAB, raw_ostream &OS,
- MCCodeEmitter *CE, bool RelaxAll,
+MCStreamer *createELFStreamer(MCContext &Ctx, MCAsmBackend &TAB,
+ 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 \p TAB and \p CE.
-MCStreamer *createPureStreamer(MCContext &Ctx, MCAsmBackend &TAB,
- raw_ostream &OS, MCCodeEmitter *CE);
-
} // end namespace llvm
#endif
projects / oota-llvm.git / blobdiff