[llvm] r210633 - MC: clang-format MCAsmInfo
Saleem Abdulrasool
compnerd at compnerd.org
Tue Jun 10 21:19:19 PDT 2014
Author: compnerd
Date: Tue Jun 10 23:19:19 2014
New Revision: 210633
URL: http://llvm.org/viewvc/llvm-project?rev=210633&view=rev
Log:
MC: clang-format MCAsmInfo
Apply clang-format over the header. Reformat the docs to current LLVM style.
NFC.
Modified:
llvm/trunk/include/llvm/MC/MCAsmInfo.h
Modified: llvm/trunk/include/llvm/MC/MCAsmInfo.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/MC/MCAsmInfo.h?rev=210633&r1=210632&r2=210633&view=diff
==============================================================================
--- llvm/trunk/include/llvm/MC/MCAsmInfo.h (original)
+++ llvm/trunk/include/llvm/MC/MCAsmInfo.h Tue Jun 10 23:19:19 2014
@@ -23,546 +23,477 @@
#include <vector>
namespace llvm {
- class MCExpr;
- class MCSection;
- class MCStreamer;
- class MCSymbol;
- class MCContext;
-
- namespace ExceptionHandling {
- enum ExceptionsType { None, DwarfCFI, SjLj, ARM, Win64 };
- }
-
- namespace LCOMM {
- enum LCOMMType { NoAlignment, ByteAlignment, Log2Alignment };
- }
-
- /// MCAsmInfo - This class is intended to be used as a base class for asm
- /// properties and features specific to the target.
- class MCAsmInfo {
- protected:
- //===------------------------------------------------------------------===//
- // Properties to be set by the target writer, used to configure asm printer.
- //
-
- /// PointerSize - Pointer size in bytes.
- /// Default is 4.
- unsigned PointerSize;
-
- /// CalleeSaveStackSlotSize - Size of the stack slot reserved for
- /// callee-saved registers, in bytes.
- /// Default is same as pointer size.
- unsigned CalleeSaveStackSlotSize;
-
- /// IsLittleEndian - True if target is little endian.
- /// Default is true.
- bool IsLittleEndian;
-
- /// StackGrowsUp - True if target stack grow up.
- /// Default is false.
- bool StackGrowsUp;
-
- /// HasSubsectionsViaSymbols - True if this target has the MachO
- /// .subsections_via_symbols directive.
- bool HasSubsectionsViaSymbols; // Default is false.
-
- /// HasMachoZeroFillDirective - True if this is a MachO target that supports
- /// the macho-specific .zerofill directive for emitting BSS Symbols.
- bool HasMachoZeroFillDirective; // Default is false.
-
- /// HasMachoTBSSDirective - True if this is a MachO target that supports
- /// the macho-specific .tbss directive for emitting thread local BSS Symbols
- bool HasMachoTBSSDirective; // Default is false.
-
- /// HasStaticCtorDtorReferenceInStaticMode - True if the compiler should
- /// emit a ".reference .constructors_used" or ".reference .destructors_used"
- /// directive after the a static ctor/dtor list. This directive is only
- /// emitted in Static relocation model.
- bool HasStaticCtorDtorReferenceInStaticMode; // Default is false.
-
- /// LinkerRequiresNonEmptyDwarfLines - True if the linker has a bug and
- /// requires that the debug_line section be of a minimum size. In practice
- /// such a linker requires a non-empty line sequence if a file is present.
- bool LinkerRequiresNonEmptyDwarfLines; // Default to false.
-
- /// MaxInstLength - This is the maximum possible length of an instruction,
- /// which is needed to compute the size of an inline asm.
- unsigned MaxInstLength; // Defaults to 4.
-
- /// MinInstAlignment - Every possible instruction length is a multiple of
- /// this value. Factored out in .debug_frame and .debug_line.
- unsigned MinInstAlignment; // Defaults to 1.
-
- /// DollarIsPC - The '$' token, when not referencing an identifier or
- /// constant, refers to the current PC.
- bool DollarIsPC; // Defaults to false.
-
- /// SeparatorString - This string, if specified, is used to separate
- /// instructions from each other when on the same line.
- const char *SeparatorString; // Defaults to ';'
-
- /// CommentString - This indicates the comment character used by the
- /// assembler.
- const char *CommentString; // Defaults to "#"
-
- /// LabelSuffix - This is appended to emitted labels.
- const char *LabelSuffix; // Defaults to ":"
-
- /// LabelSuffix - This is appended to emitted labels.
- const char *DebugLabelSuffix; // Defaults to ":"
-
- /// This prefix is used for globals like constant pool entries that are
- /// completely private to the .s file and should not have names in the .o
- /// file.
- const char *PrivateGlobalPrefix; // Defaults to "L"
-
- /// This prefix is used for symbols that should be passed through the
- /// assembler but be removed by the linker. This is 'l' on Darwin,
- /// currently used for some ObjC metadata.
- /// The default of "" meast that for this system a plain private symbol
- /// should be used.
- const char *LinkerPrivateGlobalPrefix; // Defaults to "".
-
- /// InlineAsmStart/End - If these are nonempty, they contain a directive to
- /// emit before and after an inline assembly statement.
- const char *InlineAsmStart; // Defaults to "#APP\n"
- const char *InlineAsmEnd; // Defaults to "#NO_APP\n"
-
- /// Code16Directive, Code32Directive, Code64Directive - These are assembly
- /// directives that tells the assembler to interpret the following
- /// instructions differently.
- const char *Code16Directive; // Defaults to ".code16"
- const char *Code32Directive; // Defaults to ".code32"
- const char *Code64Directive; // Defaults to ".code64"
-
- /// AssemblerDialect - Which dialect of an assembler variant to use.
- unsigned AssemblerDialect; // Defaults to 0
-
- /// \brief This is true if the assembler allows @ characters in symbol
- /// names. Defaults to false.
- bool AllowAtInName;
-
- /// UseDataRegionDirectives - This is true if data region markers should
- /// be printed as ".data_region/.end_data_region" directives. If false,
- /// use "$d/$a" labels instead.
- bool UseDataRegionDirectives;
-
- //===--- Data Emission Directives -------------------------------------===//
-
- /// ZeroDirective - this should be set to the directive used to get some
- /// number of zero bytes emitted to the current section. Common cases are
- /// "\t.zero\t" and "\t.space\t". If this is set to null, the
- /// Data*bitsDirective's will be used to emit zero bytes.
- const char *ZeroDirective; // Defaults to "\t.zero\t"
-
- /// AsciiDirective - This directive allows emission of an ascii string with
- /// the standard C escape characters embedded into it.
- const char *AsciiDirective; // Defaults to "\t.ascii\t"
-
- /// AscizDirective - If not null, this allows for special handling of
- /// zero terminated strings on this target. This is commonly supported as
- /// ".asciz". If a target doesn't support this, it can be set to null.
- const char *AscizDirective; // Defaults to "\t.asciz\t"
-
- /// DataDirectives - These directives are used to output some unit of
- /// integer data to the current section. If a data directive is set to
- /// null, smaller data directives will be used to emit the large sizes.
- const char *Data8bitsDirective; // Defaults to "\t.byte\t"
- const char *Data16bitsDirective; // Defaults to "\t.short\t"
- const char *Data32bitsDirective; // Defaults to "\t.long\t"
- const char *Data64bitsDirective; // Defaults to "\t.quad\t"
-
- /// GPRel64Directive - if non-null, a directive that is used to emit a word
- /// which should be relocated as a 64-bit GP-relative offset, e.g. .gpdword
- /// on Mips.
- const char *GPRel64Directive; // Defaults to NULL.
-
- /// GPRel32Directive - if non-null, a directive that is used to emit a word
- /// which should be relocated as a 32-bit GP-relative offset, e.g. .gpword
- /// on Mips or .gprel32 on Alpha.
- const char *GPRel32Directive; // Defaults to NULL.
-
- /// SunStyleELFSectionSwitchSyntax - This is true if this target uses "Sun
- /// Style" syntax for section switching ("#alloc,#write" etc) instead of the
- /// normal ELF syntax (,"a,w") in .section directives.
- bool SunStyleELFSectionSwitchSyntax; // Defaults to false.
-
- /// UsesELFSectionDirectiveForBSS - This is true if this target uses ELF
- /// '.section' directive before the '.bss' one. It's used for PPC/Linux
- /// which doesn't support the '.bss' directive only.
- bool UsesELFSectionDirectiveForBSS; // Defaults to false.
-
- bool NeedsDwarfSectionOffsetDirective;
-
- //===--- Alignment Information ----------------------------------------===//
-
- /// AlignmentIsInBytes - If this is true (the default) then the asmprinter
- /// emits ".align N" directives, where N is the number of bytes to align to.
- /// Otherwise, it emits ".align log2(N)", e.g. 3 to align to an 8 byte
- /// boundary.
- bool AlignmentIsInBytes; // Defaults to true
-
- /// TextAlignFillValue - If non-zero, this is used to fill the executable
- /// space created as the result of a alignment directive.
- unsigned TextAlignFillValue; // Defaults to 0
-
- //===--- Global Variable Emission Directives --------------------------===//
-
- /// GlobalDirective - This is the directive used to declare a global entity.
- ///
- const char *GlobalDirective; // Defaults to NULL.
-
- /// HasSetDirective - True if the assembler supports the .set directive.
- bool HasSetDirective; // Defaults to true.
-
- /// HasAggressiveSymbolFolding - False if the assembler requires that we use
- /// Lc = a - b
- /// .long Lc
- /// instead of
- /// .long a - b
- bool HasAggressiveSymbolFolding; // Defaults to true.
-
- /// COMMDirectiveAlignmentIsInBytes - True is .comm's and .lcomms optional
- /// alignment is to be specified in bytes instead of log2(n).
- bool COMMDirectiveAlignmentIsInBytes; // Defaults to true;
-
- /// LCOMMDirectiveAlignment - Describes if the .lcomm directive for the
- /// target supports an alignment argument and how it is interpreted.
- LCOMM::LCOMMType LCOMMDirectiveAlignmentType; // Defaults to NoAlignment.
-
- /// HasDotTypeDotSizeDirective - True if the target has .type and .size
- /// directives, this is true for most ELF targets.
- bool HasDotTypeDotSizeDirective; // Defaults to true.
-
- /// HasSingleParameterDotFile - True if the target has a single parameter
- /// .file directive, this is true for ELF targets.
- bool HasSingleParameterDotFile; // Defaults to true.
-
- /// hasIdentDirective - True if the target has a .ident directive, this is
- /// true for ELF targets.
- bool HasIdentDirective; // Defaults to false.
-
- /// HasNoDeadStrip - True if this target supports the MachO .no_dead_strip
- /// directive.
- bool HasNoDeadStrip; // Defaults to false.
-
- /// WeakRefDirective - This directive, if non-null, is used to declare a
- /// global as being a weak undefined symbol.
- const char *WeakRefDirective; // Defaults to NULL.
-
- /// True if we have a directive to declare a global as being a weak
- /// defined symbol.
- bool HasWeakDefDirective; // Defaults to false.
-
- /// True if we have a directive to declare a global as being a weak
- /// defined symbol that can be hidden (unexported).
- bool HasWeakDefCanBeHiddenDirective; // Defaults to false.
-
- /// True if we have a .linkonce directive. This is used on cygwin/mingw.
- bool HasLinkOnceDirective; // Defaults to false.
-
- /// HiddenVisibilityAttr - This attribute, if not MCSA_Invalid, is used to
- /// declare a symbol as having hidden visibility.
- MCSymbolAttr HiddenVisibilityAttr; // Defaults to MCSA_Hidden.
-
- /// HiddenDeclarationVisibilityAttr - This attribute, if not MCSA_Invalid,
- /// is used to declare an undefined symbol as having hidden visibility.
- MCSymbolAttr HiddenDeclarationVisibilityAttr; // Defaults to MCSA_Hidden.
-
-
- /// ProtectedVisibilityAttr - This attribute, if not MCSA_Invalid, is used
- /// to declare a symbol as having protected visibility.
- MCSymbolAttr ProtectedVisibilityAttr; // Defaults to MCSA_Protected
-
- //===--- Dwarf Emission Directives -----------------------------------===//
-
- /// HasLEB128 - True if target asm supports leb128 directives.
- bool HasLEB128; // Defaults to false.
-
- /// SupportsDebugInformation - True if target supports emission of debugging
- /// information.
- bool SupportsDebugInformation; // Defaults to false.
-
- /// SupportsExceptionHandling - True if target supports exception handling.
- ExceptionHandling::ExceptionsType ExceptionsType; // Defaults to None
-
- /// DwarfUsesRelocationsAcrossSections - True if Dwarf2 output generally
- /// uses relocations for references to other .debug_* sections.
- bool DwarfUsesRelocationsAcrossSections;
-
- /// DwarfFDESymbolsUseAbsDiff - true if DWARF FDE symbol reference
- /// relocations should be replaced by an absolute difference.
- bool DwarfFDESymbolsUseAbsDiff;
-
- /// DwarfRegNumForCFI - True if dwarf register numbers are printed
- /// instead of symbolic register names in .cfi_* directives.
- bool DwarfRegNumForCFI; // Defaults to false;
-
- /// UseParensForSymbolVariant - True if target uses parens to indicate the
- /// symbol variant instead of @. For example, foo(plt) instead of foo at plt.
- bool UseParensForSymbolVariant; // Defaults to false;
-
- //===--- Prologue State ----------------------------------------------===//
-
- std::vector<MCCFIInstruction> InitialFrameState;
-
- //===--- Integrated Assembler State ----------------------------------===//
- /// Should we use the integrated assembler?
- /// The integrated assembler should be enabled by default (by the
- /// constructors) when failing to parse a valid piece of assembly (inline
- /// or otherwise) is considered a bug. It may then be overridden after
- /// construction (see LLVMTargetMachine::initAsmInfo()).
- bool UseIntegratedAssembler;
-
- /// Compress DWARF debug sections. Defaults to false.
- bool CompressDebugSections;
-
- public:
- explicit MCAsmInfo();
- virtual ~MCAsmInfo();
-
- /// getPointerSize - Get the pointer size in bytes.
- unsigned getPointerSize() const {
- return PointerSize;
- }
-
- /// getCalleeSaveStackSlotSize - Get the callee-saved register stack slot
- /// size in bytes.
- unsigned getCalleeSaveStackSlotSize() const {
- return CalleeSaveStackSlotSize;
- }
-
- /// isLittleEndian - True if the target is little endian.
- bool isLittleEndian() const {
- return IsLittleEndian;
- }
-
- /// isStackGrowthDirectionUp - True if target stack grow up.
- bool isStackGrowthDirectionUp() const {
- return StackGrowsUp;
- }
-
- bool hasSubsectionsViaSymbols() const { return HasSubsectionsViaSymbols; }
-
- // Data directive accessors.
- //
- const char *getData8bitsDirective() const {
- return Data8bitsDirective;
- }
- const char *getData16bitsDirective() const {
- return Data16bitsDirective;
- }
- const char *getData32bitsDirective() const {
- return Data32bitsDirective;
- }
- const char *getData64bitsDirective() const {
- return Data64bitsDirective;
- }
- const char *getGPRel64Directive() const { return GPRel64Directive; }
- const char *getGPRel32Directive() const { return GPRel32Directive; }
-
- /// getNonexecutableStackSection - Targets can implement this method to
- /// specify a section to switch to if the translation unit doesn't have any
- /// trampolines that require an executable stack.
- virtual const MCSection *getNonexecutableStackSection(MCContext &Ctx) const{
- return nullptr;
- }
-
- virtual const MCExpr *
- getExprForPersonalitySymbol(const MCSymbol *Sym,
- unsigned Encoding,
- MCStreamer &Streamer) const;
-
- virtual const MCExpr *
- getExprForFDESymbol(const MCSymbol *Sym,
- unsigned Encoding,
- MCStreamer &Streamer) const;
-
- bool usesSunStyleELFSectionSwitchSyntax() const {
- return SunStyleELFSectionSwitchSyntax;
- }
-
- bool usesELFSectionDirectiveForBSS() const {
- return UsesELFSectionDirectiveForBSS;
- }
-
- bool needsDwarfSectionOffsetDirective() const {
- return NeedsDwarfSectionOffsetDirective;
- }
-
- // Accessors.
- //
- bool hasMachoZeroFillDirective() const { return HasMachoZeroFillDirective; }
- bool hasMachoTBSSDirective() const { return HasMachoTBSSDirective; }
- bool hasStaticCtorDtorReferenceInStaticMode() const {
- return HasStaticCtorDtorReferenceInStaticMode;
- }
- bool getLinkerRequiresNonEmptyDwarfLines() const {
- return LinkerRequiresNonEmptyDwarfLines;
- }
- unsigned getMaxInstLength() const {
- return MaxInstLength;
- }
- unsigned getMinInstAlignment() const {
- return MinInstAlignment;
- }
- bool getDollarIsPC() const {
- return DollarIsPC;
- }
- const char *getSeparatorString() const {
- return SeparatorString;
- }
-
- /// This indicates the column (zero-based) at which asm comments should be
- /// printed.
- unsigned getCommentColumn() const {
- return 40;
- }
-
- const char *getCommentString() const {
- return CommentString;
- }
- const char *getLabelSuffix() const {
- return LabelSuffix;
- }
-
- const char *getDebugLabelSuffix() const {
- return DebugLabelSuffix;
- }
- const char *getPrivateGlobalPrefix() const {
- return PrivateGlobalPrefix;
- }
- bool hasLinkerPrivateGlobalPrefix() const {
- return LinkerPrivateGlobalPrefix[0] != '\0';
- }
- const char *getLinkerPrivateGlobalPrefix() const {
- if (hasLinkerPrivateGlobalPrefix())
- return LinkerPrivateGlobalPrefix;
- return getPrivateGlobalPrefix();
- }
- const char *getInlineAsmStart() const {
- return InlineAsmStart;
- }
- const char *getInlineAsmEnd() const {
- return InlineAsmEnd;
- }
- const char *getCode16Directive() const {
- return Code16Directive;
- }
- const char *getCode32Directive() const {
- return Code32Directive;
- }
- const char *getCode64Directive() const {
- return Code64Directive;
- }
- unsigned getAssemblerDialect() const {
- return AssemblerDialect;
- }
- bool doesAllowAtInName() const {
- return AllowAtInName;
- }
- bool doesSupportDataRegionDirectives() const {
- return UseDataRegionDirectives;
- }
- const char *getZeroDirective() const {
- return ZeroDirective;
- }
- const char *getAsciiDirective() const {
- return AsciiDirective;
- }
- const char *getAscizDirective() const {
- return AscizDirective;
- }
- bool getAlignmentIsInBytes() const {
- return AlignmentIsInBytes;
- }
- unsigned getTextAlignFillValue() const {
- return TextAlignFillValue;
- }
- const char *getGlobalDirective() const {
- return GlobalDirective;
- }
- bool hasSetDirective() const { return HasSetDirective; }
- bool hasAggressiveSymbolFolding() const {
- return HasAggressiveSymbolFolding;
- }
- bool getCOMMDirectiveAlignmentIsInBytes() const {
- return COMMDirectiveAlignmentIsInBytes;
- }
- LCOMM::LCOMMType getLCOMMDirectiveAlignmentType() const {
- return LCOMMDirectiveAlignmentType;
- }
- bool hasDotTypeDotSizeDirective() const {return HasDotTypeDotSizeDirective;}
- bool hasSingleParameterDotFile() const { return HasSingleParameterDotFile; }
- bool hasIdentDirective() const { return HasIdentDirective; }
- bool hasNoDeadStrip() const { return HasNoDeadStrip; }
- const char *getWeakRefDirective() const { return WeakRefDirective; }
- bool hasWeakDefDirective() const { return HasWeakDefDirective; }
- bool hasWeakDefCanBeHiddenDirective() const {
- return HasWeakDefCanBeHiddenDirective;
- }
- bool hasLinkOnceDirective() const { return HasLinkOnceDirective; }
-
- MCSymbolAttr getHiddenVisibilityAttr() const { return HiddenVisibilityAttr;}
- MCSymbolAttr getHiddenDeclarationVisibilityAttr() const {
- return HiddenDeclarationVisibilityAttr;
- }
- MCSymbolAttr getProtectedVisibilityAttr() const {
- return ProtectedVisibilityAttr;
- }
- bool hasLEB128() const {
- return HasLEB128;
- }
- bool doesSupportDebugInformation() const {
- return SupportsDebugInformation;
- }
- bool doesSupportExceptionHandling() const {
- return ExceptionsType != ExceptionHandling::None;
- }
- ExceptionHandling::ExceptionsType getExceptionHandlingType() const {
- return ExceptionsType;
- }
- bool isExceptionHandlingDwarf() const {
- return
- (ExceptionsType == ExceptionHandling::DwarfCFI ||
- ExceptionsType == ExceptionHandling::ARM ||
- ExceptionsType == ExceptionHandling::Win64);
- }
- bool doesDwarfUseRelocationsAcrossSections() const {
- return DwarfUsesRelocationsAcrossSections;
- }
- bool doDwarfFDESymbolsUseAbsDiff() const {
- return DwarfFDESymbolsUseAbsDiff;
- }
- bool useDwarfRegNumForCFI() const {
- return DwarfRegNumForCFI;
- }
- bool useParensForSymbolVariant() const {
- return UseParensForSymbolVariant;
- }
-
- void addInitialFrameState(const MCCFIInstruction &Inst) {
- InitialFrameState.push_back(Inst);
- }
-
- const std::vector<MCCFIInstruction> &getInitialFrameState() const {
- return InitialFrameState;
- }
-
- /// Return true if assembly (inline or otherwise) should be parsed.
- bool useIntegratedAssembler() const { return UseIntegratedAssembler; }
-
- /// Set whether assembly (inline or otherwise) should be parsed.
- virtual void setUseIntegratedAssembler(bool Value) {
- UseIntegratedAssembler = Value;
- }
-
- bool compressDebugSections() const { return CompressDebugSections; }
-
- void setCompressDebugSections(bool CompressDebugSections) {
- this->CompressDebugSections = CompressDebugSections;
- }
- };
+class MCExpr;
+class MCSection;
+class MCStreamer;
+class MCSymbol;
+class MCContext;
+
+namespace ExceptionHandling {
+enum ExceptionsType { None, DwarfCFI, SjLj, ARM, Win64 };
+}
+
+namespace LCOMM {
+enum LCOMMType { NoAlignment, ByteAlignment, Log2Alignment };
+}
+
+/// This class is intended to be used as a base class for asm
+/// properties and features specific to the target.
+class MCAsmInfo {
+protected:
+ //===------------------------------------------------------------------===//
+ // Properties to be set by the target writer, used to configure asm printer.
+ //
+
+ /// Pointer size in bytes. Default is 4.
+ unsigned PointerSize;
+
+ /// Size of the stack slot reserved for callee-saved registers, in bytes.
+ /// Default is same as pointer size.
+ unsigned CalleeSaveStackSlotSize;
+
+ /// True if target is little endian. Default is true.
+ bool IsLittleEndian;
+
+ /// True if target stack grow up. Default is false.
+ bool StackGrowsUp;
+
+ /// True if this target has the MachO .subsections_via_symbols directive.
+ /// Default is false.
+ bool HasSubsectionsViaSymbols;
+
+ /// True if this is a MachO target that supports the macho-specific .zerofill
+ /// directive for emitting BSS Symbols. Default is false.
+ bool HasMachoZeroFillDirective;
+
+ /// True if this is a MachO target that supports the macho-specific .tbss
+ /// directive for emitting thread local BSS Symbols. Default is false.
+ bool HasMachoTBSSDirective;
+
+ /// True if the compiler should emit a ".reference .constructors_used" or
+ /// ".reference .destructors_used" directive after the a static ctor/dtor
+ /// list. This directive is only emitted in Static relocation model. Default
+ /// is false.
+ bool HasStaticCtorDtorReferenceInStaticMode;
+
+ /// True if the linker has a bug and requires that the debug_line section be
+ /// of a minimum size. In practice such a linker requires a non-empty line
+ /// sequence if a file is present. Default to false.
+ bool LinkerRequiresNonEmptyDwarfLines;
+
+ /// This is the maximum possible length of an instruction, which is needed to
+ /// compute the size of an inline asm. Defaults to 4.
+ unsigned MaxInstLength;
+
+ /// Every possible instruction length is a multiple of this value. Factored
+ /// out in .debug_frame and .debug_line. Defaults to 1.
+ unsigned MinInstAlignment;
+
+ /// The '$' token, when not referencing an identifier or constant, refers to
+ /// the current PC. Defaults to false.
+ bool DollarIsPC;
+
+ /// This string, if specified, is used to separate instructions from each
+ /// other when on the same line. Defaults to ';'
+ const char *SeparatorString;
+
+ /// This indicates the comment character used by the assembler. Defaults to
+ /// "#"
+ const char *CommentString;
+
+ /// This is appended to emitted labels. Defaults to ":"
+ const char *LabelSuffix;
+
+ /// This is appended to emitted labels. Defaults to ":"
+ const char *DebugLabelSuffix;
+
+ /// This prefix is used for globals like constant pool entries that are
+ /// completely private to the .s file and should not have names in the .o
+ /// file. Defaults to "L"
+ const char *PrivateGlobalPrefix;
+
+ /// This prefix is used for symbols that should be passed through the
+ /// assembler but be removed by the linker. This is 'l' on Darwin, currently
+ /// used for some ObjC metadata. The default of "" meast that for this system
+ /// a plain private symbol should be used. Defaults to "".
+ const char *LinkerPrivateGlobalPrefix;
+
+ /// If these are nonempty, they contain a directive to emit before and after
+ /// an inline assembly statement. Defaults to "#APP\n", "#NO_APP\n"
+ const char *InlineAsmStart;
+ const char *InlineAsmEnd;
+
+ /// These are assembly directives that tells the assembler to interpret the
+ /// following instructions differently. Defaults to ".code16", ".code32",
+ /// ".code64".
+ const char *Code16Directive;
+ const char *Code32Directive;
+ const char *Code64Directive;
+
+ /// Which dialect of an assembler variant to use. Defaults to 0
+ unsigned AssemblerDialect;
+
+ /// This is true if the assembler allows @ characters in symbol names.
+ /// Defaults to false.
+ bool AllowAtInName;
+
+ /// This is true if data region markers should be printed as
+ /// ".data_region/.end_data_region" directives. If false, use "$d/$a" labels
+ /// instead.
+ bool UseDataRegionDirectives;
+
+ //===--- Data Emission Directives -------------------------------------===//
+
+ /// This should be set to the directive used to get some number of zero bytes
+ /// emitted to the current section. Common cases are "\t.zero\t" and
+ /// "\t.space\t". If this is set to null, the Data*bitsDirective's will be
+ /// used to emit zero bytes. Defaults to "\t.zero\t"
+ const char *ZeroDirective;
+
+ /// This directive allows emission of an ascii string with the standard C
+ /// escape characters embedded into it. Defaults to "\t.ascii\t"
+ const char *AsciiDirective;
+
+ /// If not null, this allows for special handling of zero terminated strings
+ /// on this target. This is commonly supported as ".asciz". If a target
+ /// doesn't support this, it can be set to null. Defaults to "\t.asciz\t"
+ const char *AscizDirective;
+
+ /// These directives are used to output some unit of integer data to the
+ /// current section. If a data directive is set to null, smaller data
+ /// directives will be used to emit the large sizes. Defaults to "\t.byte\t",
+ /// "\t.short\t", "\t.long\t", "\t.quad\t"
+ const char *Data8bitsDirective;
+ const char *Data16bitsDirective;
+ const char *Data32bitsDirective;
+ const char *Data64bitsDirective;
+
+ /// If non-null, a directive that is used to emit a word which should be
+ /// relocated as a 64-bit GP-relative offset, e.g. .gpdword on Mips. Defaults
+ /// to NULL.
+ const char *GPRel64Directive;
+
+ /// If non-null, a directive that is used to emit a word which should be
+ /// relocated as a 32-bit GP-relative offset, e.g. .gpword on Mips or .gprel32
+ /// on Alpha. Defaults to NULL.
+ const char *GPRel32Directive;
+
+ /// This is true if this target uses "Sun Style" syntax for section switching
+ /// ("#alloc,#write" etc) instead of the normal ELF syntax (,"a,w") in
+ /// .section directives. Defaults to false.
+ bool SunStyleELFSectionSwitchSyntax;
+
+ /// This is true if this target uses ELF '.section' directive before the
+ /// '.bss' one. It's used for PPC/Linux which doesn't support the '.bss'
+ /// directive only. Defaults to false.
+ bool UsesELFSectionDirectiveForBSS;
+
+ bool NeedsDwarfSectionOffsetDirective;
+
+ //===--- Alignment Information ----------------------------------------===//
+
+ /// If this is true (the default) then the asmprinter emits ".align N"
+ /// directives, where N is the number of bytes to align to. Otherwise, it
+ /// emits ".align log2(N)", e.g. 3 to align to an 8 byte boundary. Defaults
+ /// to true.
+ bool AlignmentIsInBytes;
+
+ /// If non-zero, this is used to fill the executable space created as the
+ /// result of a alignment directive. Defaults to 0
+ unsigned TextAlignFillValue;
+
+ //===--- Global Variable Emission Directives --------------------------===//
+
+ /// This is the directive used to declare a global entity. Defaults to NULL.
+ const char *GlobalDirective;
+
+ /// True if the assembler supports the .set directive. Defaults to true.
+ bool HasSetDirective;
+
+ /// False if the assembler requires that we use
+ /// \code
+ /// Lc = a - b
+ /// .long Lc
+ /// \endcode
+ //
+ /// instead of
+ //
+ /// \code
+ /// .long a - b
+ /// \endcode
+ ///
+ /// Defaults to true.
+ bool HasAggressiveSymbolFolding;
+
+ /// True is .comm's and .lcomms optional alignment is to be specified in bytes
+ /// instead of log2(n). Defaults to true.
+ bool COMMDirectiveAlignmentIsInBytes;
+
+ /// Describes if the .lcomm directive for the target supports an alignment
+ /// argument and how it is interpreted. Defaults to NoAlignment.
+ LCOMM::LCOMMType LCOMMDirectiveAlignmentType;
+
+ /// True if the target has .type and .size directives, this is true for most
+ /// ELF targets. Defaults to true.
+ bool HasDotTypeDotSizeDirective;
+
+ /// True if the target has a single parameter .file directive, this is true
+ /// for ELF targets. Defaults to true.
+ bool HasSingleParameterDotFile;
+
+ /// True if the target has a .ident directive, this is true for ELF targets.
+ /// Defaults to false.
+ bool HasIdentDirective;
+
+ /// True if this target supports the MachO .no_dead_strip directive. Defaults
+ /// to false.
+ bool HasNoDeadStrip;
+
+ /// This directive, if non-null, is used to declare a global as being a weak
+ /// undefined symbol. Defaults to NULL.
+ const char *WeakRefDirective;
+
+ /// True if we have a directive to declare a global as being a weak defined
+ /// symbol. Defaults to false.
+ bool HasWeakDefDirective;
+
+ /// True if we have a directive to declare a global as being a weak defined
+ /// symbol that can be hidden (unexported). Defaults to false.
+ bool HasWeakDefCanBeHiddenDirective;
+
+ /// True if we have a .linkonce directive. This is used on cygwin/mingw.
+ /// Defaults to false.
+ bool HasLinkOnceDirective;
+
+ /// This attribute, if not MCSA_Invalid, is used to declare a symbol as having
+ /// hidden visibility. Defaults to MCSA_Hidden.
+ MCSymbolAttr HiddenVisibilityAttr;
+
+ /// This attribute, if not MCSA_Invalid, is used to declare an undefined
+ /// symbol as having hidden visibility. Defaults to MCSA_Hidden.
+ MCSymbolAttr HiddenDeclarationVisibilityAttr;
+
+ /// This attribute, if not MCSA_Invalid, is used to declare a symbol as having
+ /// protected visibility. Defaults to MCSA_Protected
+ MCSymbolAttr ProtectedVisibilityAttr;
+
+ //===--- Dwarf Emission Directives -----------------------------------===//
+
+ /// True if target asm supports leb128 directives. Defaults to false.
+ bool HasLEB128;
+
+ /// True if target supports emission of debugging information. Defaults to
+ /// false.
+ bool SupportsDebugInformation;
+
+ /// True if target supports exception handling. Defaults to None
+ ExceptionHandling::ExceptionsType ExceptionsType;
+
+ /// True if Dwarf2 output generally uses relocations for references to other
+ /// .debug_* sections.
+ bool DwarfUsesRelocationsAcrossSections;
+
+ /// True if DWARF FDE symbol reference relocations should be replaced by an
+ /// absolute difference.
+ bool DwarfFDESymbolsUseAbsDiff;
+
+ /// True if dwarf register numbers are printed instead of symbolic register
+ /// names in .cfi_* directives. Defaults to false.
+ bool DwarfRegNumForCFI;
+
+ /// True if target uses parens to indicate the symbol variant instead of @.
+ /// For example, foo(plt) instead of foo at plt. Defaults to false.
+ bool UseParensForSymbolVariant;
+
+ //===--- Prologue State ----------------------------------------------===//
+
+ std::vector<MCCFIInstruction> InitialFrameState;
+
+ //===--- Integrated Assembler State ----------------------------------===//
+
+ /// Should we use the integrated assembler?
+ /// The integrated assembler should be enabled by default (by the
+ /// constructors) when failing to parse a valid piece of assembly (inline
+ /// or otherwise) is considered a bug. It may then be overridden after
+ /// construction (see LLVMTargetMachine::initAsmInfo()).
+ bool UseIntegratedAssembler;
+
+ /// Compress DWARF debug sections. Defaults to false.
+ bool CompressDebugSections;
+
+public:
+ explicit MCAsmInfo();
+ virtual ~MCAsmInfo();
+
+ /// Get the pointer size in bytes.
+ unsigned getPointerSize() const { return PointerSize; }
+
+ /// Get the callee-saved register stack slot
+ /// size in bytes.
+ unsigned getCalleeSaveStackSlotSize() const {
+ return CalleeSaveStackSlotSize;
+ }
+
+ /// True if the target is little endian.
+ bool isLittleEndian() const { return IsLittleEndian; }
+
+ /// True if target stack grow up.
+ bool isStackGrowthDirectionUp() const { return StackGrowsUp; }
+
+ bool hasSubsectionsViaSymbols() const { return HasSubsectionsViaSymbols; }
+
+ // Data directive accessors.
+
+ const char *getData8bitsDirective() const { return Data8bitsDirective; }
+ const char *getData16bitsDirective() const { return Data16bitsDirective; }
+ const char *getData32bitsDirective() const { return Data32bitsDirective; }
+ const char *getData64bitsDirective() const { return Data64bitsDirective; }
+ const char *getGPRel64Directive() const { return GPRel64Directive; }
+ const char *getGPRel32Directive() const { return GPRel32Directive; }
+
+ /// Targets can implement this method to specify a section to switch to if the
+ /// translation unit doesn't have any trampolines that require an executable
+ /// stack.
+ virtual const MCSection *getNonexecutableStackSection(MCContext &Ctx) const {
+ return nullptr;
+ }
+
+ virtual const MCExpr *getExprForPersonalitySymbol(const MCSymbol *Sym,
+ unsigned Encoding,
+ MCStreamer &Streamer) const;
+
+ virtual const MCExpr *getExprForFDESymbol(const MCSymbol *Sym,
+ unsigned Encoding,
+ MCStreamer &Streamer) const;
+
+ bool usesSunStyleELFSectionSwitchSyntax() const {
+ return SunStyleELFSectionSwitchSyntax;
+ }
+
+ bool usesELFSectionDirectiveForBSS() const {
+ return UsesELFSectionDirectiveForBSS;
+ }
+
+ bool needsDwarfSectionOffsetDirective() const {
+ return NeedsDwarfSectionOffsetDirective;
+ }
+
+ // Accessors.
+
+ bool hasMachoZeroFillDirective() const { return HasMachoZeroFillDirective; }
+ bool hasMachoTBSSDirective() const { return HasMachoTBSSDirective; }
+ bool hasStaticCtorDtorReferenceInStaticMode() const {
+ return HasStaticCtorDtorReferenceInStaticMode;
+ }
+ bool getLinkerRequiresNonEmptyDwarfLines() const {
+ return LinkerRequiresNonEmptyDwarfLines;
+ }
+ unsigned getMaxInstLength() const { return MaxInstLength; }
+ unsigned getMinInstAlignment() const { return MinInstAlignment; }
+ bool getDollarIsPC() const { return DollarIsPC; }
+ const char *getSeparatorString() const { return SeparatorString; }
+
+ /// This indicates the column (zero-based) at which asm comments should be
+ /// printed.
+ unsigned getCommentColumn() const { return 40; }
+
+ const char *getCommentString() const { return CommentString; }
+ const char *getLabelSuffix() const { return LabelSuffix; }
+
+ const char *getDebugLabelSuffix() const { return DebugLabelSuffix; }
+ const char *getPrivateGlobalPrefix() const { return PrivateGlobalPrefix; }
+ bool hasLinkerPrivateGlobalPrefix() const {
+ return LinkerPrivateGlobalPrefix[0] != '\0';
+ }
+ const char *getLinkerPrivateGlobalPrefix() const {
+ if (hasLinkerPrivateGlobalPrefix())
+ return LinkerPrivateGlobalPrefix;
+ return getPrivateGlobalPrefix();
+ }
+ const char *getInlineAsmStart() const { return InlineAsmStart; }
+ const char *getInlineAsmEnd() const { return InlineAsmEnd; }
+ const char *getCode16Directive() const { return Code16Directive; }
+ const char *getCode32Directive() const { return Code32Directive; }
+ const char *getCode64Directive() const { return Code64Directive; }
+ unsigned getAssemblerDialect() const { return AssemblerDialect; }
+ bool doesAllowAtInName() const { return AllowAtInName; }
+ bool doesSupportDataRegionDirectives() const {
+ return UseDataRegionDirectives;
+ }
+ const char *getZeroDirective() const { return ZeroDirective; }
+ const char *getAsciiDirective() const { return AsciiDirective; }
+ const char *getAscizDirective() const { return AscizDirective; }
+ bool getAlignmentIsInBytes() const { return AlignmentIsInBytes; }
+ unsigned getTextAlignFillValue() const { return TextAlignFillValue; }
+ const char *getGlobalDirective() const { return GlobalDirective; }
+ bool hasSetDirective() const { return HasSetDirective; }
+ bool hasAggressiveSymbolFolding() const { return HasAggressiveSymbolFolding; }
+ bool getCOMMDirectiveAlignmentIsInBytes() const {
+ return COMMDirectiveAlignmentIsInBytes;
+ }
+ LCOMM::LCOMMType getLCOMMDirectiveAlignmentType() const {
+ return LCOMMDirectiveAlignmentType;
+ }
+ bool hasDotTypeDotSizeDirective() const { return HasDotTypeDotSizeDirective; }
+ bool hasSingleParameterDotFile() const { return HasSingleParameterDotFile; }
+ bool hasIdentDirective() const { return HasIdentDirective; }
+ bool hasNoDeadStrip() const { return HasNoDeadStrip; }
+ const char *getWeakRefDirective() const { return WeakRefDirective; }
+ bool hasWeakDefDirective() const { return HasWeakDefDirective; }
+ bool hasWeakDefCanBeHiddenDirective() const {
+ return HasWeakDefCanBeHiddenDirective;
+ }
+ bool hasLinkOnceDirective() const { return HasLinkOnceDirective; }
+
+ MCSymbolAttr getHiddenVisibilityAttr() const { return HiddenVisibilityAttr; }
+ MCSymbolAttr getHiddenDeclarationVisibilityAttr() const {
+ return HiddenDeclarationVisibilityAttr;
+ }
+ MCSymbolAttr getProtectedVisibilityAttr() const {
+ return ProtectedVisibilityAttr;
+ }
+ bool hasLEB128() const { return HasLEB128; }
+ bool doesSupportDebugInformation() const { return SupportsDebugInformation; }
+ bool doesSupportExceptionHandling() const {
+ return ExceptionsType != ExceptionHandling::None;
+ }
+ ExceptionHandling::ExceptionsType getExceptionHandlingType() const {
+ return ExceptionsType;
+ }
+ bool isExceptionHandlingDwarf() const {
+ return (ExceptionsType == ExceptionHandling::DwarfCFI ||
+ ExceptionsType == ExceptionHandling::ARM ||
+ ExceptionsType == ExceptionHandling::Win64);
+ }
+ bool doesDwarfUseRelocationsAcrossSections() const {
+ return DwarfUsesRelocationsAcrossSections;
+ }
+ bool doDwarfFDESymbolsUseAbsDiff() const { return DwarfFDESymbolsUseAbsDiff; }
+ bool useDwarfRegNumForCFI() const { return DwarfRegNumForCFI; }
+ bool useParensForSymbolVariant() const { return UseParensForSymbolVariant; }
+
+ void addInitialFrameState(const MCCFIInstruction &Inst) {
+ InitialFrameState.push_back(Inst);
+ }
+
+ const std::vector<MCCFIInstruction> &getInitialFrameState() const {
+ return InitialFrameState;
+ }
+
+ /// Return true if assembly (inline or otherwise) should be parsed.
+ bool useIntegratedAssembler() const { return UseIntegratedAssembler; }
+
+ /// Set whether assembly (inline or otherwise) should be parsed.
+ virtual void setUseIntegratedAssembler(bool Value) {
+ UseIntegratedAssembler = Value;
+ }
+
+ bool compressDebugSections() const { return CompressDebugSections; }
+
+ void setCompressDebugSections(bool CompressDebugSections) {
+ this->CompressDebugSections = CompressDebugSections;
+ }
+};
}
#endif
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