diff options
Diffstat (limited to 'include/llvm/MC/MCStreamer.h')
| -rw-r--r-- | include/llvm/MC/MCStreamer.h | 86 |
1 files changed, 84 insertions, 2 deletions
diff --git a/include/llvm/MC/MCStreamer.h b/include/llvm/MC/MCStreamer.h index 04d143ffef66d..cd710ee434251 100644 --- a/include/llvm/MC/MCStreamer.h +++ b/include/llvm/MC/MCStreamer.h @@ -183,6 +183,12 @@ class MCStreamer { /// PushSection. SmallVector<std::pair<MCSectionSubPair, MCSectionSubPair>, 4> SectionStack; + /// The next unique ID to use when creating a WinCFI-related section (.pdata + /// or .xdata). This ID ensures that we have a one-to-one mapping from + /// code section to unwind info section, which MSVC's incremental linker + /// requires. + unsigned NextWinCFIID = 0; + protected: MCStreamer(MCContext &Ctx); @@ -222,6 +228,8 @@ public: return DwarfFrameInfos; } + bool hasUnfinishedDwarfFrameInfo(); + unsigned getNumWinFrameInfos() { return WinFrameInfos.size(); } ArrayRef<WinEH::FrameInfo *> getWinFrameInfos() const { return WinFrameInfos; @@ -244,7 +252,7 @@ public: /// correctly? virtual bool isIntegratedAssemblerRequired() const { return false; } - /// \brief Add a textual command. + /// \brief Add a textual comment. /// /// 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 @@ -266,6 +274,12 @@ public: /// only prints comments, the object streamer ignores it instead of asserting. virtual void emitRawComment(const Twine &T, bool TabPrefix = true); + /// \brief Add explicit comment T. T is required to be a valid + /// comment in the output and does not need to be escaped. + virtual void addExplicitComment(const Twine &T); + /// \brief Emit added explicit comments. + virtual void emitExplicitComments(); + /// AddBlankLine - Emit a blank line to a .s file to pretty it up. virtual void AddBlankLine() {} @@ -515,6 +529,10 @@ public: /// etc. virtual void EmitBytes(StringRef Data); + /// Functionally identical to EmitBytes. When emitting textual assembly, this + /// method uses .byte directives instead of .ascii or .asciz for readability. + virtual void EmitBinaryData(StringRef Data); + /// \brief Emit the expression \p Value into the output as a native /// integer of the given \p Size bytes. /// @@ -567,7 +585,29 @@ public: /// \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); + virtual void emitFill(uint64_t NumBytes, uint8_t FillValue); + + /// \brief Emit \p Size bytes worth of the value specified by \p FillValue. + /// + /// This is used to implement assembler directives such as .space or .skip. + /// + /// \param NumBytes - The number of bytes to emit. + /// \param FillValue - The value to use when filling bytes. + /// \param Loc - The location of the expression for error reporting. + virtual void emitFill(const MCExpr &NumBytes, uint64_t FillValue, + SMLoc Loc = SMLoc()); + + /// \brief Emit \p NumValues copies of \p Size bytes. Each \p Size bytes is + /// taken from the lowest order 4 bytes of \p Expr expression. + /// + /// This is used to implement assembler directives such as .fill. + /// + /// \param NumValues - The number of copies of \p Size bytes to emit. + /// \param Size - The size (in bytes) of each repeated value. + /// \param Expr - The expression from which \p Size bytes are used. + virtual void emitFill(uint64_t NumValues, int64_t Size, int64_t Expr); + virtual void emitFill(const MCExpr &NumValues, int64_t Size, int64_t Expr, + SMLoc Loc = SMLoc()); /// \brief Emit NumBytes worth of zeros. /// This function properly handles data in virtual sections. @@ -640,6 +680,40 @@ public: unsigned Isa, unsigned Discriminator, StringRef FileName); + /// \brief Associate a filename with a specified logical file number. This + /// implements the '.cv_file 4 "foo.c"' assembler directive. + virtual unsigned EmitCVFileDirective(unsigned FileNo, StringRef Filename); + + /// \brief This implements the CodeView '.cv_loc' assembler directive. + virtual void EmitCVLocDirective(unsigned FunctionId, unsigned FileNo, + unsigned Line, unsigned Column, + bool PrologueEnd, bool IsStmt, + StringRef FileName); + + /// \brief This implements the CodeView '.cv_linetable' assembler directive. + virtual void EmitCVLinetableDirective(unsigned FunctionId, + const MCSymbol *FnStart, + const MCSymbol *FnEnd); + + /// \brief This implements the CodeView '.cv_inline_linetable' assembler + /// directive. + virtual void EmitCVInlineLinetableDirective( + unsigned PrimaryFunctionId, unsigned SourceFileId, unsigned SourceLineNum, + const MCSymbol *FnStartSym, const MCSymbol *FnEndSym, + ArrayRef<unsigned> SecondaryFunctionIds); + + /// \brief This implements the CodeView '.cv_def_range' assembler + /// directive. + virtual void EmitCVDefRangeDirective( + ArrayRef<std::pair<const MCSymbol *, const MCSymbol *>> Ranges, + StringRef FixedSizePortion); + + /// \brief This implements the CodeView '.cv_stringtable' assembler directive. + virtual void EmitCVStringTableDirective() {} + + /// \brief This implements the CodeView '.cv_filechecksums' assembler directive. + virtual void EmitCVFileChecksumsDirective() {} + /// Emit the absolute difference between two symbols. /// /// \pre Offset of \c Hi is greater than the offset \c Lo. @@ -684,6 +758,14 @@ public: virtual void EmitWinEHHandler(const MCSymbol *Sym, bool Unwind, bool Except); virtual void EmitWinEHHandlerData(); + /// Get the .pdata section used for the given section. Typically the given + /// section is either the main .text section or some other COMDAT .text + /// section, but it may be any section containing code. + MCSection *getAssociatedPDataSection(const MCSection *TextSec); + + /// Get the .xdata section used for the given section. + MCSection *getAssociatedXDataSection(const MCSection *TextSec); + virtual void EmitSyntaxDirective(); /// \brief Emit a .reloc directive. |