#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallVector.h"
-#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCDirectives.h"
#include "llvm/MC/MCDwarf.h"
-#include "llvm/MC/MCWin64EH.h"
+#include "llvm/MC/MCLinkerOptimizationHint.h"
+#include "llvm/MC/MCWinEH.h"
#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/SMLoc.h"
#include <string>
namespace llvm {
class MCSection;
class MCStreamer;
class MCSymbol;
+class MCSymbolELF;
class MCSymbolRefExpr;
class MCSubtargetInfo;
class StringRef;
class formatted_raw_ostream;
class AssemblerConstantPools;
-typedef std::pair<const MCSection *, const MCExpr *> MCSectionSubPair;
+typedef std::pair<MCSection *, const MCExpr *> MCSectionSubPair;
/// Target specific streamer interface. This is used so that targets can
/// implement support for target specific assembly directives.
///
/// If target foo wants to use this, it should implement 3 classes:
/// * FooTargetStreamer : public MCTargetStreamer
-/// * FooTargetAsmSreamer : public FooTargetStreamer
+/// * FooTargetAsmStreamer : public FooTargetStreamer
/// * FooTargetELFStreamer : public FooTargetStreamer
///
/// FooTargetStreamer should have a pure virtual method for each directive. For
/// example, for a ".bar symbol_name" directive, it should have
/// virtual emitBar(const MCSymbol &Symbol) = 0;
///
-/// The FooTargetAsmSreamer and FooTargetELFStreamer classes implement the
+/// The FooTargetAsmStreamer and FooTargetELFStreamer classes implement the
/// method. The assembly streamer just prints ".bar symbol_name". The object
/// streamer does whatever is needed to implement .bar in the object file.
///
/// MCTargetStreamer &TS = OutStreamer.getTargetStreamer();
/// FooTargetStreamer &ATS = static_cast<FooTargetStreamer &>(TS);
///
-/// The base classes FooTargetAsmSreamer and FooTargetELFStreamer should *never*
-/// be treated differently. Callers should always talk to a FooTargetStreamer.
+/// The base classes FooTargetAsmStreamer and FooTargetELFStreamer should
+/// *never* be treated differently. Callers should always talk to a
+/// FooTargetStreamer.
class MCTargetStreamer {
protected:
MCStreamer &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 ARMTargetStreamer : public MCTargetStreamer {
public:
ARMTargetStreamer(MCStreamer &S);
- ~ARMTargetStreamer();
+ ~ARMTargetStreamer() override;
virtual void emitFnStart();
virtual void emitFnEnd();
StringRef StringValue = "");
virtual void emitFPU(unsigned FPU);
virtual void emitArch(unsigned Arch);
+ virtual void emitArchExtension(unsigned ArchExt);
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 finish();
+ 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
std::unique_ptr<AssemblerConstantPools> ConstantPools;
};
-/// MCStreamer - Streaming machine code generation interface. This interface
-/// is intended to provide a programatic interface that is very similar to the
-/// level that an assembler .s file provides. It has callbacks to emit bytes,
-/// handle directives, etc. The implementation of this interface retains
-/// state to know what the current section is etc.
+/// \brief Streaming machine code generation interface.
+///
+/// This interface is intended to provide a programatic interface that is very
+/// similar to the level that an assembler .s file provides. It has callbacks
+/// to emit bytes, handle directives, etc. The implementation of this interface
+/// retains state to know what the current section is etc.
///
/// There are multiple implementations of this interface: one for writing out
/// a .s file, and implementations that write out .o files of various formats.
MCContext &Context;
std::unique_ptr<MCTargetStreamer> TargetStreamer;
- MCStreamer(const MCStreamer &) LLVM_DELETED_FUNCTION;
- MCStreamer &operator=(const MCStreamer &) LLVM_DELETED_FUNCTION;
+ MCStreamer(const MCStreamer &) = delete;
+ MCStreamer &operator=(const MCStreamer &) = delete;
- bool EmitEHFrame;
- bool EmitDebugFrame;
+ std::vector<MCDwarfFrameInfo> DwarfFrameInfos;
+ MCDwarfFrameInfo *getCurrentDwarfFrameInfo();
+ void EnsureValidDwarfFrame();
- std::vector<MCDwarfFrameInfo> FrameInfos;
- MCDwarfFrameInfo *getCurrentFrameInfo();
MCSymbol *EmitCFICommon();
- void EnsureValidFrame();
- std::vector<MCWin64EHUnwindInfo *> W64UnwindInfos;
- MCWin64EHUnwindInfo *CurrentW64UnwindInfo;
- void setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame);
- void EnsureValidW64UnwindInfo();
+ std::vector<WinEH::FrameInfo *> WinFrameInfos;
+ WinEH::FrameInfo *CurrentWinFrameInfo;
+ void EnsureValidWinFrameInfo();
- MCSymbol *LastSymbol;
-
- // SymbolOrdering - Tracks an index to represent the order
- // a symbol was emitted in. Zero means we did not emit that symbol.
+ /// \brief 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;
- /// SectionStack - This is stack of current and previous section
- /// values saved by PushSection.
+ /// \brief This is stack of current and previous section values saved by
+ /// PushSection.
SmallVector<std::pair<MCSectionSubPair, MCSectionSubPair>, 4> SectionStack;
protected:
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;
+ WinEH::FrameInfo *getCurrentWinFrameInfo() {
+ return CurrentWinFrameInfo;
}
- void EmitW64Tables();
+
+ virtual void EmitWindowsUnwindTables();
virtual void EmitRawTextImpl(StringRef String);
public:
virtual ~MCStreamer();
+ void visitUsedExpr(const MCExpr &Expr);
+ virtual void visitUsedSymbol(const MCSymbol &Sym);
+
void setTargetStreamer(MCTargetStreamer *TS) {
TargetStreamer.reset(TS);
}
return TargetStreamer.get();
}
- unsigned getNumFrameInfos() { return FrameInfos.size(); }
-
- const MCDwarfFrameInfo &getFrameInfo(unsigned i) { return FrameInfos[i]; }
-
- ArrayRef<MCDwarfFrameInfo> getFrameInfos() const { return FrameInfos; }
-
- unsigned getNumW64UnwindInfos() { return W64UnwindInfos.size(); }
+ unsigned getNumFrameInfos() { return DwarfFrameInfos.size(); }
+ ArrayRef<MCDwarfFrameInfo> getDwarfFrameInfos() const {
+ return DwarfFrameInfos;
+ }
- MCWin64EHUnwindInfo &getW64UnwindInfo(unsigned i) {
- return *W64UnwindInfos[i];
+ unsigned getNumWinFrameInfos() { return WinFrameInfos.size(); }
+ ArrayRef<WinEH::FrameInfo *> getWinFrameInfos() const {
+ return WinFrameInfos;
}
void generateCompactUnwindEncodings(MCAsmBackend *MAB);
- /// @name Assembly File Formatting.
+ /// \name Assembly File Formatting.
/// @{
- /// isVerboseAsm - Return true if this streamer supports verbose assembly
- /// and if it is enabled.
+ /// \brief Return true if this streamer supports verbose assembly and if it is
+ /// enabled.
virtual bool isVerboseAsm() const { return false; }
- /// hasRawTextSupport - Return true if this asm streamer supports emitting
- /// unformatted text to the .s file with EmitRawText.
+ /// \brief Return true if this asm streamer supports emitting unformatted text
+ /// to the .s file with EmitRawText.
virtual bool hasRawTextSupport() const { return false; }
- /// Is the integrated assembler required for this streamer to function
+ /// \brief 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
+ /// \brief Add a textual command.
+ ///
+ /// Typically for comments 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
/// verbose assembly output is enabled.
/// prefix as appropriate. The added comment should not end with a \n.
virtual void AddComment(const Twine &T) {}
- /// GetCommentOS - Return a raw_ostream that comments can be written to.
- /// Unlike AddComment, you are required to terminate comments with \n if you
- /// use this method.
+ /// \brief Return a raw_ostream that comments can be written to. Unlike
+ /// AddComment, you are required to terminate comments with \n if you 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
+ /// \brief 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);
/// @}
- /// @name Symbol & Section Management
+ /// \name Symbol & Section Management
/// @{
- /// getCurrentSection - Return the current section that the streamer is
- /// emitting code to.
+ /// \brief Return the current section that the streamer is emitting code to.
MCSectionSubPair getCurrentSection() const {
if (!SectionStack.empty())
return SectionStack.back().first;
return MCSectionSubPair();
}
+ MCSection *getCurrentSectionOnly() const { return getCurrentSection().first; }
- /// getPreviousSection - Return the previous section that the streamer is
- /// emitting code to.
+ /// \brief Return the previous section that the streamer is emitting code to.
MCSectionSubPair getPreviousSection() const {
if (!SectionStack.empty())
return SectionStack.back().second;
return MCSectionSubPair();
}
- /// GetSymbolOrder - Returns an index to represent the order
- /// a symbol was emitted in. (zero if we did not emit that symbol)
+ /// \brief Returns an index to represent the order a symbol was emitted in.
+ /// (zero if we did not emit that symbol)
unsigned GetSymbolOrder(const MCSymbol *Sym) const {
return SymbolOrdering.lookup(Sym);
}
- /// ChangeSection - Update streamer for a new active section.
+ /// \brief Update streamer for a new active section.
///
/// This is called by PopSection and SwitchSection, if the current
/// section changes.
- virtual void ChangeSection(const MCSection *, const MCExpr *) = 0;
+ virtual void ChangeSection(MCSection *, const MCExpr *);
- /// pushSection - Save the current and previous section on the
- /// section stack.
+ /// \brief Save the current and previous section on the section stack.
void PushSection() {
SectionStack.push_back(
std::make_pair(getCurrentSection(), getPreviousSection()));
}
- /// popSection - Restore the current and previous section from
- /// the section stack. Calls ChangeSection as needed.
+ /// \brief Restore the current and previous section from the section stack.
+ /// Calls ChangeSection as needed.
///
/// Returns false if the stack was empty.
bool PopSection() {
if (SectionStack.size() <= 1)
return false;
- MCSectionSubPair oldSection = SectionStack.pop_back_val().first;
- MCSectionSubPair curSection = SectionStack.back().first;
-
- if (oldSection != curSection)
- ChangeSection(curSection.first, curSection.second);
+ auto I = SectionStack.end();
+ --I;
+ MCSectionSubPair OldSection = I->first;
+ --I;
+ MCSectionSubPair NewSection = I->first;
+
+ if (OldSection != NewSection)
+ ChangeSection(NewSection.first, NewSection.second);
+ SectionStack.pop_back();
return true;
}
return true;
}
- /// SwitchSection - Set the current section where code is being emitted to
- /// @p Section. This is required to update CurSection.
+ /// Set the current section where code is being emitted to \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) {
- assert(Section && "Cannot switch to a null section!");
- MCSectionSubPair curSection = SectionStack.back().first;
- SectionStack.back().second = curSection;
- if (MCSectionSubPair(Section, Subsection) != curSection) {
- SectionStack.back().first = MCSectionSubPair(Section, Subsection);
- ChangeSection(Section, Subsection);
- }
- }
-
- /// SwitchSectionNoChange - Set the current section where code is being
- /// 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) {
+ virtual void SwitchSection(MCSection *Section,
+ const MCExpr *Subsection = nullptr);
+
+ /// \brief Set the current section where code is being emitted to \p Section.
+ /// This is required to update CurSection. This version does not call
+ /// ChangeSection.
+ void SwitchSectionNoChange(MCSection *Section,
+ 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);
}
- /// Create the default sections and set the initial one.
- virtual void InitSections();
+ /// \brief Create the default sections and set the initial one.
+ virtual void InitSections(bool NoExecStack);
+
+ MCSymbol *endSection(MCSection *Section);
- /// AssignSection - Sets the symbol's section.
+ /// \brief Sets the symbol's section.
///
/// Each emitted symbol will be tracked in the ordering table,
/// so we can sort on them later.
- void AssignSection(MCSymbol *Symbol, const MCSection *Section);
+ void AssignSection(MCSymbol *Symbol, MCSection *Section);
- /// EmitLabel - Emit a label for @p Symbol into the current section.
+ /// \brief Emit a label for \p Symbol into the current section.
///
/// This corresponds to an assembler statement such as:
/// foo:
///
- /// @param Symbol - The symbol to emit. A given symbol should only be
+ /// \param Symbol - The symbol to emit. A given symbol should only be
/// emitted as a label once, and symbols emitted as a label should never be
/// used in an assignment.
// FIXME: These emission are non-const because we mutate the symbol to
// 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;
+ /// \brief Note in the output the specified \p Flag.
+ virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
- /// EmitLinkerOptions - Emit the given list @p Options of strings as linker
+ /// \brief Emit the given list \p Options of strings as linker
/// options into the output.
virtual void EmitLinkerOptions(ArrayRef<std::string> Kind) {}
- /// EmitDataRegion - Note in the output the specified region @p Kind.
+ /// \brief 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;
+ /// \brief Specify the MachO minimum deployment target version.
+ virtual void EmitVersionMin(MCVersionMinType, unsigned Major, unsigned Minor,
+ unsigned Update) {}
- /// getOrCreateSymbolData - Get symbol data for given symbol.
- virtual MCSymbolData &getOrCreateSymbolData(MCSymbol *Symbol);
+ /// \brief Note in the output that the specified \p Func is a Thumb mode
+ /// function (ARM target only).
+ virtual void EmitThumbFunc(MCSymbol *Func);
- /// EmitAssignment - Emit an assignment of @p Value to @p Symbol.
+ /// \brief Emit an assignment of \p Value to \p Symbol.
///
/// This corresponds to an assembler statement such as:
/// symbol = value
/// value in the current context. For the assembly streamer, this prints the
/// binding into the .s file.
///
- /// @param Symbol - The symbol being assigned to.
- /// @param Value - The value for the symbol.
- virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) = 0;
+ /// \param Symbol - The symbol being assigned to.
+ /// \param Value - The value for the symbol.
+ virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
- /// EmitWeakReference - Emit an weak reference from @p Alias to @p Symbol.
+ /// \brief Emit an weak reference from \p Alias to \p Symbol.
///
/// This corresponds to an assembler statement such as:
/// .weakref alias, symbol
///
- /// @param Alias - The alias that is being created.
- /// @param Symbol - The symbol being aliased.
- virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) = 0;
+ /// \param Alias - The alias that is being created.
+ /// \param Symbol - The symbol being aliased.
+ virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol);
- /// EmitSymbolAttribute - Add the given @p Attribute to @p Symbol.
+ /// \brief Add the given \p Attribute to \p Symbol.
virtual bool EmitSymbolAttribute(MCSymbol *Symbol,
MCSymbolAttr Attribute) = 0;
- /// EmitSymbolDesc - Set the @p DescValue for the @p Symbol.
+ /// \brief Set the \p DescValue for the \p 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;
+ /// \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);
- /// BeginCOFFSymbolDef - Start emitting COFF symbol definition
+ /// \brief Start emitting COFF symbol definition
///
- /// @param Symbol - The symbol to have its External & Type fields set.
- virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol) = 0;
+ /// \param Symbol - The symbol to have its External & Type fields set.
+ virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol);
- /// EmitCOFFSymbolStorageClass - Emit the storage class of the symbol.
+ /// \brief Emit the storage class of the symbol.
///
- /// @param StorageClass - The storage class the symbol should have.
- virtual void EmitCOFFSymbolStorageClass(int StorageClass) = 0;
+ /// \param StorageClass - The storage class the symbol should have.
+ virtual void EmitCOFFSymbolStorageClass(int StorageClass);
- /// EmitCOFFSymbolType - Emit the type of the symbol.
+ /// \brief Emit the type of the symbol.
///
- /// @param Type - A COFF type identifier (see COFF::SymbolType in X86COFF.h)
- virtual void EmitCOFFSymbolType(int Type) = 0;
+ /// \param Type - A COFF type identifier (see COFF::SymbolType in X86COFF.h)
+ virtual void EmitCOFFSymbolType(int Type);
- /// EndCOFFSymbolDef - Marks the end of the symbol definition.
- virtual void EndCOFFSymbolDef() = 0;
+ /// \brief Marks the end of the symbol definition.
+ virtual void EndCOFFSymbolDef();
- /// EmitCOFFSectionIndex - Emits a COFF section index.
+ virtual void EmitCOFFSafeSEH(MCSymbol const *Symbol);
+
+ /// \brief Emits a COFF section index.
///
- /// @param Symbol - Symbol the section number relocation should point to.
+ /// \param Symbol - Symbol the section number relocation should point to.
virtual void EmitCOFFSectionIndex(MCSymbol const *Symbol);
- /// EmitCOFFSecRel32 - Emits a COFF section relative relocation.
+ /// \brief Emits a COFF section relative relocation.
///
- /// @param Symbol - Symbol the section relative relocation should point to.
+ /// \param Symbol - Symbol the section relative relocation should point to.
virtual void EmitCOFFSecRel32(MCSymbol const *Symbol);
- /// EmitELFSize - Emit an ELF .size directive.
+ /// \brief Emit an ELF .size directive.
///
/// This corresponds to an assembler statement such as:
/// .size symbol, expression
- ///
- virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) = 0;
+ virtual void emitELFSize(MCSymbolELF *Symbol, const MCExpr *Value);
- /// EmitCommonSymbol - Emit a common symbol.
+ /// \brief Emit a Linker Optimization Hint (LOH) directive.
+ /// \param Args - Arguments of the LOH.
+ virtual void EmitLOHDirective(MCLOHType Kind, const MCLOHArgs &Args) {}
+
+ /// \brief Emit a common symbol.
///
- /// @param Symbol - The common symbol to emit.
- /// @param Size - The size of the common symbol.
- /// @param ByteAlignment - The alignment of the symbol if
+ /// \param Symbol - The common symbol to emit.
+ /// \param Size - The size of the common symbol.
+ /// \param ByteAlignment - The alignment of the symbol if
/// non-zero. This must be a power of 2.
virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) = 0;
- /// EmitLocalCommonSymbol - Emit a local common (.lcomm) symbol.
+ /// \brief Emit a local common (.lcomm) symbol.
///
- /// @param Symbol - The common symbol to emit.
- /// @param Size - The size of the common symbol.
- /// @param ByteAlignment - The alignment of the common symbol in bytes.
+ /// \param Symbol - The common symbol to emit.
+ /// \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.
+ /// \brief Emit the zerofill section and an optional symbol.
///
- /// @param Section - The zerofill section to create and or to put the symbol
- /// @param Symbol - The zerofill symbol to emit, if non-NULL.
- /// @param Size - The size of the zerofill symbol.
- /// @param ByteAlignment - The alignment of the zerofill symbol if
+ /// \param Section - The zerofill section to create and or to put the symbol
+ /// \param Symbol - The zerofill symbol to emit, if non-NULL.
+ /// \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,
+ virtual void EmitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
uint64_t Size = 0, unsigned ByteAlignment = 0) = 0;
- /// EmitTBSSSymbol - Emit a thread local bss (.tbss) symbol.
+ /// \brief Emit a thread local bss (.tbss) symbol.
///
- /// @param Section - The thread local common section.
- /// @param Symbol - The thread local common symbol to emit.
- /// @param Size - The size of the symbol.
- /// @param ByteAlignment - The alignment of the thread local common symbol
+ /// \param Section - The thread local common section.
+ /// \param Symbol - The thread local common symbol to emit.
+ /// \param Size - The size of the 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;
+ virtual void EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol,
+ uint64_t Size, unsigned ByteAlignment = 0);
/// @}
- /// @name Generating Data
+ /// \name Generating Data
/// @{
- /// EmitBytes - Emit the bytes in \p Data into the output.
+ /// \brief Emit the bytes in \p Data into the output.
///
/// 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.
+ /// \brief Emit the expression \p Value into the output as a native
+ /// integer of the given \p Size bytes.
///
/// This is used to implement assembler directives such as .word, .quad,
/// etc.
///
- /// @param Value - The value to emit.
- /// @param Size - The size of the integer (in bytes) to emit. This must
+ /// \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
+ /// \brief Special case of EmitValue that avoids the client having
/// to pass in a MCExpr for constant integers.
virtual void EmitIntValue(uint64_t Value, unsigned Size);
- /// EmitAbsValue - Emit the Value, but try to avoid relocations. On MachO
- /// this is done by producing
- /// foo = value
- /// .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.
+ /// \brief Special case of EmitULEB128Value that avoids the client having to
+ /// pass in a MCExpr for constant integers.
void EmitULEB128IntValue(uint64_t Value, unsigned Padding = 0);
- /// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
- /// client having to pass in a MCExpr for constant integers.
+ /// \brief Special case of EmitSLEB128Value that avoids the client having to
+ /// pass in a MCExpr for constant integers.
void EmitSLEB128IntValue(int64_t Value);
- /// EmitSymbolValue - Special case of EmitValue that avoids the client
- /// having to pass in a MCExpr for MCSymbols.
- void EmitSymbolValue(const MCSymbol *Sym, unsigned Size);
+ /// \brief Special case of EmitValue that avoids the client having to pass in
+ /// a MCExpr for MCSymbols.
+ void EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
+ bool IsSectionRelative = false);
- /// EmitGPRel64Value - Emit the expression @p Value into the output as a
- /// gprel64 (64-bit GP relative) value.
+ /// \brief 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.
+ /// \brief Emit the expression \p Value into the output as a gprel32 (32-bit
+ /// GP relative) value.
///
/// This is used to implement assembler directives such as .gprel32 on
/// targets that support them.
virtual void EmitGPRel32Value(const MCExpr *Value);
- /// EmitFill - Emit NumBytes bytes worth of the value specified by
- /// FillValue. This implements directives such as '.space'.
+ /// \brief Emit NumBytes bytes worth of the value specified by FillValue.
+ /// This implements directives such as '.space'.
virtual void EmitFill(uint64_t NumBytes, uint8_t FillValue);
/// \brief Emit NumBytes worth of zeros.
/// This function properly handles data in virtual sections.
virtual void EmitZeros(uint64_t NumBytes);
- /// EmitValueToAlignment - Emit some number of copies of @p Value until
- /// the byte alignment @p ByteAlignment is reached.
+ /// \brief Emit some number of copies of \p Value until the byte alignment \p
+ /// ByteAlignment is reached.
///
/// If the number of bytes need to emit for the alignment is not a multiple
- /// of @p ValueSize, then the contents of the emitted fill bytes is
+ /// of \p ValueSize, then the contents of the emitted fill bytes is
/// undefined.
///
/// This used to implement the .align assembler directive.
///
- /// @param ByteAlignment - The alignment to reach. This must be a power of
+ /// \param ByteAlignment - The alignment to reach. This must be a power of
/// two on some targets.
- /// @param Value - The value to use when filling bytes.
- /// @param ValueSize - The size of the integer (in bytes) to emit for
- /// @p Value. This must match a native machine width.
- /// @param MaxBytesToEmit - The maximum numbers of bytes to emit, or 0. If
+ /// \param Value - The value to use when filling bytes.
+ /// \param ValueSize - The size of the integer (in bytes) to emit for
+ /// \p Value. This must match a native machine width.
+ /// \param MaxBytesToEmit - The maximum numbers of bytes to emit, or 0. If
/// the alignment cannot be reached in this many bytes, no bytes are
/// 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.
+ /// \brief Emit nops until the byte alignment \p ByteAlignment is reached.
///
/// This used to align code where the alignment bytes may be executed. This
/// can emit different bytes for different sizes to optimize execution.
///
- /// @param ByteAlignment - The alignment to reach. This must be a power of
+ /// \param ByteAlignment - The alignment to reach. This must be a power of
/// two on some targets.
- /// @param MaxBytesToEmit - The maximum numbers of bytes to emit, or 0. If
+ /// \param MaxBytesToEmit - The maximum numbers of bytes to emit, or 0. If
/// 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.
+ /// \brief Emit some number of copies of \p Value until the byte offset \p
+ /// Offset is reached.
///
/// This is used to implement assembler directives such as .org.
///
- /// @param Offset - The offset to reach. This may be an expression, but the
+ /// \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.
- /// @return false on success, true if the offset was invalid.
+ /// \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;
+ /// \brief Switch to a new logical file. This is used to implement the '.file
+ /// "foo.c"' assembler directive.
+ virtual void EmitFileDirective(StringRef Filename);
- /// Emit the "identifiers" directive. This implements the
+ /// \brief Emit the "identifiers" directive. This implements the
/// '.ident "version foo"' assembler directive.
virtual void EmitIdent(StringRef IdentString) {}
- /// 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);
+ /// \brief Associate a filename with a specified logical file number. This
+ /// implements the DWARF2 '.file 4 "foo.c"' assembler directive.
+ virtual unsigned EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
+ StringRef Filename,
+ unsigned CUID = 0);
- /// EmitDwarfLocDirective - This implements the DWARF2
- // '.loc fileno lineno ...' assembler directive.
+ /// \brief This implements the DWARF2 '.loc fileno lineno ...' assembler
+ /// directive.
virtual void EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
unsigned Column, unsigned Flags,
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) {}
-
- void EmitDwarfSetLineAddr(int64_t LineDelta, const MCSymbol *Label,
- int PointerSize);
+ /// Emit the absolute difference between two symbols.
+ ///
+ /// \pre Offset of \c Hi is greater than the offset \c Lo.
+ virtual void emitAbsoluteSymbolDiff(const MCSymbol *Hi, const MCSymbol *Lo,
+ unsigned Size);
- virtual void EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding);
+ virtual MCSymbol *getDwarfLineTableSymbol(unsigned CUID);
virtual void EmitCFISections(bool EH, bool Debug);
void EmitCFIStartProc(bool IsSimple);
void EmitCFIEndProc();
virtual void EmitCFIRegister(int64_t Register1, int64_t Register2);
virtual void EmitCFIWindowSave();
- virtual void EmitWin64EHStartProc(const MCSymbol *Symbol);
- virtual void EmitWin64EHEndProc();
- virtual void EmitWin64EHStartChained();
- virtual void EmitWin64EHEndChained();
- virtual void EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
- bool Except);
- virtual void EmitWin64EHHandlerData();
- virtual void EmitWin64EHPushReg(unsigned Register);
- virtual void EmitWin64EHSetFrame(unsigned Register, unsigned Offset);
- virtual void EmitWin64EHAllocStack(unsigned Size);
- virtual void EmitWin64EHSaveReg(unsigned Register, unsigned Offset);
- virtual void EmitWin64EHSaveXMM(unsigned Register, unsigned Offset);
- virtual void EmitWin64EHPushFrame(bool Code);
- virtual void EmitWin64EHEndProlog();
-
- /// EmitInstruction - Emit the given @p Instruction into the current
- /// section.
- virtual void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) = 0;
+ virtual void EmitWinCFIStartProc(const MCSymbol *Symbol);
+ virtual void EmitWinCFIEndProc();
+ virtual void EmitWinCFIStartChained();
+ virtual void EmitWinCFIEndChained();
+ virtual void EmitWinCFIPushReg(unsigned Register);
+ virtual void EmitWinCFISetFrame(unsigned Register, unsigned Offset);
+ virtual void EmitWinCFIAllocStack(unsigned Size);
+ virtual void EmitWinCFISaveReg(unsigned Register, unsigned Offset);
+ virtual void EmitWinCFISaveXMM(unsigned Register, unsigned Offset);
+ virtual void EmitWinCFIPushFrame(bool Code);
+ virtual void EmitWinCFIEndProlog();
+
+ virtual void EmitWinEHHandler(const MCSymbol *Sym, bool Unwind, bool Except);
+ virtual void EmitWinEHHandlerData();
+
+ /// \brief Emit the given \p Instruction into the current section.
+ 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
- /// indicated by the hasRawTextSupport() predicate. By default this aborts.
+ /// \brief If this file is backed by a assembly streamer, this dumps the
+ /// specified string in the output .s file. This capability is indicated by
+ /// the hasRawTextSupport() predicate. By default this aborts.
void EmitRawText(const Twine &String);
- /// Flush - Causes any cached state to be written out.
+ /// \brief Causes any cached state to be written out.
virtual void Flush() {}
- /// FinishImpl - Streamer specific finalization.
- virtual void FinishImpl() = 0;
- /// Finish - Finish emission of machine code.
+ /// \brief Streamer specific finalization.
+ virtual void FinishImpl();
+ /// \brief Finish emission of machine code.
void Finish();
+
+ virtual bool mayHaveInstructions(MCSection &Sec) const { return true; }
};
-/// createNullStreamer - Create a dummy machine code streamer, which does
-/// nothing. This is useful for timing the assembler front end.
+/// Create a dummy machine code streamer, which does nothing. This is useful for
+/// timing the assembler front end.
MCStreamer *createNullStreamer(MCContext &Ctx);
-/// createAsmStreamer - Create a machine code streamer which will print out
-/// assembly for the native target, suitable for compiling with a native
-/// assembler.
+/// Create a machine code streamer which will print out assembly for the native
+/// target, suitable for compiling with a native assembler.
///
/// \param InstPrint - If given, the instruction printer to use. If not given
/// the MCInst representation will be printed. This method takes ownership of
///
/// \param ShowInst - Whether to show the MCInst representation inline with
/// the assembly.
-MCStreamer *createAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
- bool isVerboseAsm, bool useCFI,
- 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);
-
-/// 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);
-
+MCStreamer *createAsmStreamer(MCContext &Ctx,
+ std::unique_ptr<formatted_raw_ostream> OS,
+ bool isVerboseAsm, bool useDwarfDirectory,
+ MCInstPrinter *InstPrint, MCCodeEmitter *CE,
+ MCAsmBackend *TAB, bool ShowInst);
} // end namespace llvm
#endif
projects / oota-llvm.git / blobdiff