diff options
Diffstat (limited to 'include/llvm/MC/MCAsmInfo.h')
| -rw-r--r-- | include/llvm/MC/MCAsmInfo.h | 41 |
1 files changed, 30 insertions, 11 deletions
diff --git a/include/llvm/MC/MCAsmInfo.h b/include/llvm/MC/MCAsmInfo.h index 4f38aac..ee245e9 100644 --- a/include/llvm/MC/MCAsmInfo.h +++ b/include/llvm/MC/MCAsmInfo.h @@ -42,11 +42,11 @@ enum class EncodingType { } enum class ExceptionHandling { - None, /// No exception support - DwarfCFI, /// DWARF-like instruction based exceptions - SjLj, /// setjmp/longjmp based exceptions - ARM, /// ARM EHABI - ItaniumWinEH, /// Itanium EH built on Windows unwind info (.pdata and .xdata) + None, /// No exception support + DwarfCFI, /// DWARF-like instruction based exceptions + SjLj, /// setjmp/longjmp based exceptions + ARM, /// ARM EHABI + WinEH, /// Windows Exception Handling }; namespace LCOMM { @@ -123,6 +123,10 @@ protected: /// file. Defaults to "L" const char *PrivateGlobalPrefix; + /// This prefix is used for labels for basic blocks. Defaults to the same as + /// PrivateGlobalPrefix. + const char *PrivateLabelPrefix; + /// 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 @@ -215,7 +219,8 @@ protected: //===--- Global Variable Emission Directives --------------------------===// - /// This is the directive used to declare a global entity. Defaults to NULL. + /// This is the directive used to declare a global entity. Defaults to + /// ".globl". const char *GlobalDirective; /// True if the expression @@ -264,6 +269,9 @@ protected: /// to false. bool HasNoDeadStrip; + /// Used to declare a global as being a weak symbol. Defaults to ".weak". + const char *WeakDirective; + /// This directive, if non-null, is used to declare a global as being a weak /// undefined symbol. Defaults to NULL. const char *WeakRefDirective; @@ -373,6 +381,12 @@ public: return nullptr; } + /// \brief True if the section is atomized using the symbols in it. + /// This is false if the section is not atomized at all (most ELF sections) or + /// if it is atomized based on its contents (MachO' __TEXT,__cstring for + /// example). + virtual bool isSectionAtomizableBySymbols(const MCSection &Section) const; + virtual const MCExpr *getExprForPersonalitySymbol(const MCSymbol *Sym, unsigned Encoding, MCStreamer &Streamer) const; @@ -414,6 +428,7 @@ public: bool useAssignmentForEHBegin() const { return UseAssignmentForEHBegin; } const char *getPrivateGlobalPrefix() const { return PrivateGlobalPrefix; } + const char *getPrivateLabelPrefix() const { return PrivateLabelPrefix; } bool hasLinkerPrivateGlobalPrefix() const { return LinkerPrivateGlobalPrefix[0] != '\0'; } @@ -452,6 +467,7 @@ public: bool hasSingleParameterDotFile() const { return HasSingleParameterDotFile; } bool hasIdentDirective() const { return HasIdentDirective; } bool hasNoDeadStrip() const { return HasNoDeadStrip; } + const char *getWeakDirective() const { return WeakDirective; } const char *getWeakRefDirective() const { return WeakRefDirective; } bool hasWeakDefDirective() const { return HasWeakDefDirective; } bool hasWeakDefCanBeHiddenDirective() const { @@ -473,13 +489,16 @@ public: ExceptionHandling getExceptionHandlingType() const { return ExceptionsType; } WinEH::EncodingType getWinEHEncodingType() const { return WinEHEncodingType; } - /// Return true if the exception handling type uses the language-specific data - /// area (LSDA) format specified by the Itanium C++ ABI. - bool usesItaniumLSDAForExceptions() const { + /// Returns true if the exception handling method for the platform uses call + /// frame information to unwind. + bool usesCFIForEH() const { return (ExceptionsType == ExceptionHandling::DwarfCFI || ExceptionsType == ExceptionHandling::ARM || - // This Windows EH type uses the Itanium LSDA encoding. - ExceptionsType == ExceptionHandling::ItaniumWinEH); + ExceptionsType == ExceptionHandling::WinEH); + } + + bool usesWindowsCFI() const { + return ExceptionsType == ExceptionHandling::WinEH; } bool doesDwarfUseRelocationsAcrossSections() const { |