diff options
Diffstat (limited to 'include/llvm/MC/MCAsmInfo.h')
| -rw-r--r-- | include/llvm/MC/MCAsmInfo.h | 102 |
1 files changed, 66 insertions, 36 deletions
diff --git a/include/llvm/MC/MCAsmInfo.h b/include/llvm/MC/MCAsmInfo.h index 43952e0..9cfd004 100644 --- a/include/llvm/MC/MCAsmInfo.h +++ b/include/llvm/MC/MCAsmInfo.h @@ -22,10 +22,12 @@ namespace llvm { class MCSection; class MCContext; - + /// MCAsmInfo - This class is intended to be used as a base class for asm /// properties and features specific to the target. - namespace ExceptionHandling { enum ExceptionsType { None, Dwarf, SjLj }; } + namespace ExceptionHandling { + enum ExceptionsType { None, DwarfTable, DwarfCFI, SjLj }; + } class MCAsmInfo { protected: @@ -36,25 +38,30 @@ namespace llvm { /// 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. - + /// PCSymbol - The symbol used to represent the current PC. Used in PC /// relative expressions. const char *PCSymbol; // Defaults to "$". @@ -72,6 +79,9 @@ namespace llvm { /// assembler. const char *CommentString; // Defaults to "#" + /// LabelSuffix - This is appended to emitted labels. + const char *LabelSuffix; // Defaults to ":" + /// GlobalPrefix - If this is set to a non-empty string, it is prepended /// onto all global symbols. This is often used for "_" or ".". const char *GlobalPrefix; // Defaults to "" @@ -80,12 +90,12 @@ namespace llvm { /// pool entries that are completely private to the .s file and should not /// have names in the .o file. This is often "." or "L". const char *PrivateGlobalPrefix; // Defaults to "." - + /// LinkerPrivateGlobalPrefix - 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. 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" @@ -117,7 +127,7 @@ namespace llvm { /// 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. @@ -135,7 +145,7 @@ namespace llvm { /// 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. - + /// getDataASDirective - Return the directive that should be used to emit /// data of the specified size to the specified numeric address space. virtual const char *getDataASDirective(unsigned Size, unsigned AS) const { @@ -149,15 +159,15 @@ namespace llvm { 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 + /// '.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. - + /// HasMicrosoftFastStdCallMangling - True if this target uses microsoft /// style mangling for functions with X86_StdCall/X86_FastCall calling /// convention. bool HasMicrosoftFastStdCallMangling; // Defaults to false. - + //===--- Alignment Information ----------------------------------------===// /// AlignDirective - The directive used to emit round up to an alignment @@ -176,27 +186,34 @@ namespace llvm { 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. - /// ExternDirective - This is the directive used to declare external + /// ExternDirective - This is the directive used to declare external /// globals. /// const char *ExternDirective; // 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. + /// HasLCOMMDirective - This is true if the target supports the .lcomm /// directive. bool HasLCOMMDirective; // Defaults to false. - + /// COMMDirectiveAlignmentIsInBytes - True is COMMDirective's optional /// alignment is to be specified in bytes instead of log2(n). bool COMMDirectiveAlignmentIsInBytes; // Defaults to true; - + /// HasDotTypeDotSizeDirective - True if the target has .type and .size /// directives, this is true for most ELF targets. bool HasDotTypeDotSizeDirective; // Defaults to true. @@ -209,10 +226,14 @@ namespace llvm { /// directive. bool HasNoDeadStrip; // Defaults to false. + /// HasSymbolResolver - True if this target supports the MachO + /// .symbol_resolver directive. + bool HasSymbolResolver; // 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. - + /// WeakDefDirective - This directive, if non-null, is used to declare a /// global as being a weak defined symbol. const char *WeakDefDirective; // Defaults to NULL. @@ -220,7 +241,7 @@ namespace llvm { /// LinkOnceDirective - This directive, if non-null is used to declare a /// global as being a weak defined symbol. This is used on cygwin/mingw. const char *LinkOnceDirective; // Defaults to NULL. - + /// HiddenVisibilityAttr - This attribute, if not MCSA_Invalid, is used to /// declare a symbol as having hidden visibility. MCSymbolAttr HiddenVisibilityAttr; // Defaults to MCSA_Hidden. @@ -234,10 +255,6 @@ namespace llvm { /// HasLEB128 - True if target asm supports leb128 directives. bool HasLEB128; // Defaults to false. - /// hasDotLocAndDotFile - True if target asm supports .loc and .file - /// directives for emitting debugging information. - bool HasDotLocAndDotFile; // Defaults to false. - /// SupportsDebugInformation - True if target supports emission of debugging /// information. bool SupportsDebugInformation; // Defaults to false. @@ -254,8 +271,8 @@ namespace llvm { /// DwarfSectionOffsetDirective - Special section offset directive. const char* DwarfSectionOffsetDirective; // Defaults to NULL - - /// DwarfUsesAbsoluteLabelForStmtList - True if DW_AT_stmt_list needs + + /// DwarfUsesAbsoluteLabelForStmtList - True if DW_AT_stmt_list needs /// absolute label instead of offset. bool DwarfUsesAbsoluteLabelForStmtList; // Defaults to true; @@ -276,7 +293,7 @@ namespace llvm { static unsigned getULEB128Size(unsigned Value); bool hasSubsectionsViaSymbols() const { return HasSubsectionsViaSymbols; } - + // Data directive accessors. // const char *getData8bitsDirective(unsigned AS = 0) const { @@ -299,11 +316,11 @@ namespace llvm { virtual const MCSection *getNonexecutableStackSection(MCContext &Ctx) const{ return 0; } - + bool usesSunStyleELFSectionSwitchSyntax() const { return SunStyleELFSectionSwitchSyntax; } - + bool usesELFSectionDirectiveForBSS() const { return UsesELFSectionDirectiveForBSS; } @@ -311,7 +328,7 @@ namespace llvm { bool hasMicrosoftFastStdCallMangling() const { return HasMicrosoftFastStdCallMangling; } - + // Accessors. // bool hasMachoZeroFillDirective() const { return HasMachoZeroFillDirective; } @@ -319,6 +336,9 @@ namespace llvm { bool hasStaticCtorDtorReferenceInStaticMode() const { return HasStaticCtorDtorReferenceInStaticMode; } + bool getLinkerRequiresNonEmptyDwarfLines() const { + return LinkerRequiresNonEmptyDwarfLines; + } unsigned getMaxInstLength() const { return MaxInstLength; } @@ -334,6 +354,9 @@ namespace llvm { const char *getCommentString() const { return CommentString; } + const char *getLabelSuffix() const { + return LabelSuffix; + } const char *getGlobalPrefix() const { return GlobalPrefix; } @@ -386,6 +409,9 @@ namespace llvm { return ExternDirective; } bool hasSetDirective() const { return HasSetDirective; } + bool hasAggressiveSymbolFolding() const { + return HasAggressiveSymbolFolding; + } bool hasLCOMMDirective() const { return HasLCOMMDirective; } bool hasDotTypeDotSizeDirective() const {return HasDotTypeDotSizeDirective;} bool getCOMMDirectiveAlignmentIsInBytes() const { @@ -393,10 +419,11 @@ namespace llvm { } bool hasSingleParameterDotFile() const { return HasSingleParameterDotFile; } bool hasNoDeadStrip() const { return HasNoDeadStrip; } + bool hasSymbolResolver() const { return HasSymbolResolver; } const char *getWeakRefDirective() const { return WeakRefDirective; } const char *getWeakDefDirective() const { return WeakDefDirective; } const char *getLinkOnceDirective() const { return LinkOnceDirective; } - + MCSymbolAttr getHiddenVisibilityAttr() const { return HiddenVisibilityAttr;} MCSymbolAttr getProtectedVisibilityAttr() const { return ProtectedVisibilityAttr; @@ -404,9 +431,6 @@ namespace llvm { bool hasLEB128() const { return HasLEB128; } - bool hasDotLocAndDotFile() const { - return HasDotLocAndDotFile; - } bool doesSupportDebugInformation() const { return SupportsDebugInformation; } @@ -416,6 +440,12 @@ namespace llvm { ExceptionHandling::ExceptionsType getExceptionHandlingType() const { return ExceptionsType; } + bool isExceptionHandlingDwarf() const { + return + (ExceptionsType == ExceptionHandling::DwarfTable || + ExceptionsType == ExceptionHandling::DwarfCFI); + } + bool doesDwarfRequireFrameSection() const { return DwarfRequiresFrameSection; } |
