X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FTarget%2FTargetAsmInfo.h;h=589c9a6efc9b052f04be92297cd9a6f1c5522dea;hb=fb2bbbe78674a34e5ec2ec6f8c566ac5cbb26154;hp=6194e163cd5ba3e3983803eea78f717383282006;hpb=265c5259ab98b5a4f9f25fbe9f2e470d0933cb38;p=oota-llvm.git diff --git a/include/llvm/Target/TargetAsmInfo.h b/include/llvm/Target/TargetAsmInfo.h index 6194e163cd5..589c9a6efc9 100644 --- a/include/llvm/Target/TargetAsmInfo.h +++ b/include/llvm/Target/TargetAsmInfo.h @@ -16,7 +16,10 @@ #ifndef LLVM_TARGET_ASM_INFO_H #define LLVM_TARGET_ASM_INFO_H +#include "llvm/ADT/DenseMap.h" +#include "llvm/ADT/StringMap.h" #include "llvm/Support/DataTypes.h" +#include namespace llvm { // DWARF encoding query type @@ -37,73 +40,145 @@ namespace llvm { ROData, ///< Readonly data section RODataMergeStr, ///< Readonly data section (mergeable strings) RODataMergeConst, ///< Readonly data section (mergeable constants) + SmallData, ///< Small data section + SmallBSS, ///< Small bss section + SmallROData, ///< Small readonly section ThreadData, ///< Initialized TLS data objects ThreadBSS ///< Uninitialized TLS data objects }; + + static inline bool isReadOnly(Kind K) { + return (K == SectionKind::ROData || + K == SectionKind::RODataMergeConst || + K == SectionKind::RODataMergeStr || + K == SectionKind::SmallROData); + } + + static inline bool isBSS(Kind K) { + return (K == SectionKind::BSS || + K == SectionKind::SmallBSS); + } } namespace SectionFlags { - enum Flags { - None = 0, - Code = 1 << 0, ///< Section contains code - Writeable = 1 << 1, ///< Section is writeable - BSS = 1 << 2, ///< Section contains only zeroes - Mergeable = 1 << 3, ///< Section contains mergeable data - Strings = 1 << 4, ///< Section contains null-terminated strings - TLS = 1 << 5, ///< Section contains thread-local data - Debug = 1 << 6, ///< Section contains debug data - Linkonce = 1 << 7, ///< Section is linkonce - // Some gap for future flags - EntitySize = 0xFF << 24 ///< Entity size for mergeable sections + const unsigned Invalid = -1U; + const unsigned None = 0; + const unsigned Code = 1 << 0; ///< Section contains code + const unsigned Writeable = 1 << 1; ///< Section is writeable + const unsigned BSS = 1 << 2; ///< Section contains only zeroes + const unsigned Mergeable = 1 << 3; ///< Section contains mergeable data + const unsigned Strings = 1 << 4; ///< Section contains C-type strings + const unsigned TLS = 1 << 5; ///< Section contains thread-local data + const unsigned Debug = 1 << 6; ///< Section contains debug data + const unsigned Linkonce = 1 << 7; ///< Section is linkonce + const unsigned Small = 1 << 8; ///< Section is small + const unsigned TypeFlags = 0xFF; + // Some gap for future flags + const unsigned Named = 1 << 23; ///< Section is named + const unsigned EntitySize = 0xFF << 24; ///< Entity size for mergeable stuff + + static inline unsigned getEntitySize(unsigned Flags) { + return (Flags >> 24) & 0xFF; + } + + static inline unsigned setEntitySize(unsigned Flags, unsigned Size) { + return ((Flags & ~EntitySize) | ((Size & 0xFF) << 24)); + } + + struct KeyInfo { + static inline unsigned getEmptyKey() { return Invalid; } + static inline unsigned getTombstoneKey() { return Invalid - 1; } + static unsigned getHashValue(const unsigned &Key) { return Key; } + static bool isEqual(unsigned LHS, unsigned RHS) { return LHS == RHS; } + static bool isPod() { return true; } }; - static inline unsigned getEntitySize(unsigned flags) { - return (flags >> 24) & 0xFF; - } - - static inline unsigned setEntitySize(unsigned flags, unsigned size) { - return ((flags & ~EntitySize) | ((size & 0xFF) << 24)); - } + typedef DenseMap FlagsStringsMapType; } class TargetMachine; class CallInst; class GlobalValue; + class Type; + class Mangler; + + class Section { + friend class TargetAsmInfo; + friend class StringMapEntry
; + + std::string Name; + unsigned Flags; + + explicit Section(unsigned F = SectionFlags::Invalid):Flags(F) { } + public: + bool isNamed() const { return Flags & SectionFlags::Named; } + unsigned getEntitySize() const { return (Flags >> 24) & 0xFF; } + const std::string& getName() const { return Name; } + }; /// TargetAsmInfo - This class is intended to be used as a base class for asm /// properties and features specific to the target. class TargetAsmInfo { + private: + mutable StringMap
Sections; + mutable SectionFlags::FlagsStringsMapType FlagsStrings; protected: //===------------------------------------------------------------------===// // Properties to be set by the target writer, used to configure asm printer. // - + /// TextSection - Section directive for standard text. /// const char *TextSection; // Defaults to ".text". - + const Section *TextSection_; + /// DataSection - Section directive for standard data. /// const char *DataSection; // Defaults to ".data". + const Section *DataSection_; /// BSSSection - Section directive for uninitialized data. Null if this /// target doesn't support a BSS section. /// const char *BSSSection; // Default to ".bss". + const Section *BSSSection_; + + /// ReadOnlySection - This is the directive that is emitted to switch to a + /// read-only section for constant data (e.g. data declared const, + /// jump tables). + const char *ReadOnlySection; // Defaults to NULL + const Section *ReadOnlySection_; + + /// SmallDataSection - This is the directive that is emitted to switch to a + /// small data section. + /// + const Section *SmallDataSection; // Defaults to NULL + + /// SmallBSSSection - This is the directive that is emitted to switch to a + /// small bss section. + /// + const Section *SmallBSSSection; // Defaults to NULL + + /// SmallRODataSection - This is the directive that is emitted to switch to + /// a small read-only data section. + /// + const Section *SmallRODataSection; // Defaults to NULL /// TLSDataSection - Section directive for Thread Local data. /// const char *TLSDataSection;// Defaults to ".section .tdata,"awT",@progbits". + const Section *TLSDataSection_; /// TLSBSSSection - Section directive for Thread Local uninitialized data. /// Null if this target doesn't support a BSS section. /// const char *TLSBSSSection;// Default to ".section .tbss,"awT",@nobits". + const Section *TLSBSSSection_; /// ZeroFillDirective - Directive for emitting a global to the ZeroFill /// section on this target. Null if this target doesn't support zerofill. const char *ZeroFillDirective; // Default is null. - + /// NonexecutableStackDirective - Directive for declaring to the /// linker and beyond that the emitted code does not require stack /// memory to be executable. @@ -142,10 +217,15 @@ namespace llvm { const char *GlobalPrefix; // Defaults to "" /// PrivateGlobalPrefix - This prefix is used for globals like constant - /// pool entries that are completely private to the .o file and should not + /// 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 "." + /// LessPrivateGlobalPrefix - 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 *LessPrivateGlobalPrefix; // Defaults to "" + /// JumpTableSpecialLabelPrefix - If not null, a extra (dead) label is /// emitted before jump tables with the specified prefix. const char *JumpTableSpecialLabelPrefix; // Default to null. @@ -271,6 +351,7 @@ namespace llvm { /// other null bytes) on this target. This is commonly supported as /// ".cstring". const char *CStringSection; // Defaults to NULL + const Section *CStringSection_; /// StaticCtorsSection - This is the directive that is emitted to switch to /// a section to emit the static constructor list. @@ -286,13 +367,11 @@ namespace llvm { /// SixteenByteConstantSection - These are special sections where we place /// 4-, 8-, and 16- byte constant literals. const char *FourByteConstantSection; + const Section *FourByteConstantSection_; const char *EightByteConstantSection; + const Section *EightByteConstantSection_; const char *SixteenByteConstantSection; - - /// ReadOnlySection - This is the directive that is emitted to switch to a - /// read-only section for constant data (e.g. data declared const, - /// jump tables). - const char *ReadOnlySection; // Defaults to NULL + const Section *SixteenByteConstantSection_; //===--- Global Variable Emission Directives --------------------------===// @@ -446,6 +525,13 @@ namespace llvm { TargetAsmInfo(); virtual ~TargetAsmInfo(); + const Section* getNamedSection(const char *Name, + unsigned Flags = SectionFlags::None, + bool Override = false) const; + const Section* getUnnamedSection(const char *Directive, + unsigned Flags = SectionFlags::None, + bool Override = false) const; + /// Measure the specified inline asm to determine an approximation of its /// length. virtual unsigned getInlineAsmLength(const char *Str) const; @@ -458,6 +544,13 @@ namespace llvm { return false; } + /// emitUsedDirectiveFor - This hook allows targets to selectively decide + /// not to emit the UsedDirective for some symbols in llvm.used. + virtual bool emitUsedDirectiveFor(const GlobalValue *GV, + Mangler *Mang) const { + return (GV!=0); + } + /// PreferredEHDataFormat - This hook allows the target to select data /// format used for encoding pointers in exception handling data. Reason is /// 0 for data, 1 for code labels, 2 for function pointers. Global is true @@ -485,27 +578,70 @@ namespace llvm { virtual std::string UniqueSectionForGlobal(const GlobalValue* GV, SectionKind::Kind kind) const; - virtual std::string PrintSectionFlags(unsigned flags) const { return ""; } + const std::string& getSectionFlags(unsigned Flags) const; + virtual std::string printSectionFlags(unsigned flags) const { return ""; } + + virtual const Section* SelectSectionForGlobal(const GlobalValue *GV) const; - virtual std::string SelectSectionForGlobal(const GlobalValue *GV) const; + virtual const Section* SelectSectionForMachineConst(const Type *Ty) const; + + /// getSLEB128Size - Compute the number of bytes required for a signed + /// leb128 value. + + static unsigned getSLEB128Size(int Value); + + /// getULEB128Size - Compute the number of bytes required for an unsigned + /// leb128 value. + + static unsigned getULEB128Size(unsigned Value); // Accessors. // const char *getTextSection() const { return TextSection; } + const Section *getTextSection_() const { + return TextSection_; + } const char *getDataSection() const { return DataSection; } + const Section *getDataSection_() const { + return DataSection_; + } const char *getBSSSection() const { return BSSSection; } + const Section *getBSSSection_() const { + return BSSSection_; + } + const char *getReadOnlySection() const { + return ReadOnlySection; + } + const Section *getReadOnlySection_() const { + return ReadOnlySection_; + } + const Section *getSmallDataSection() const { + return SmallDataSection; + } + const Section *getSmallBSSSection() const { + return SmallBSSSection; + } + const Section *getSmallRODataSection() const { + return SmallRODataSection; + } const char *getTLSDataSection() const { return TLSDataSection; } + const Section *getTLSDataSection_() const { + return TLSDataSection_; + } const char *getTLSBSSSection() const { return TLSBSSSection; } + const Section *getTLSBSSSection_() const { + return TLSBSSSection_; + } const char *getZeroFillDirective() const { return ZeroFillDirective; } @@ -530,6 +666,9 @@ namespace llvm { const char *getPrivateGlobalPrefix() const { return PrivateGlobalPrefix; } + const char *getLessPrivateGlobalPrefix() const { + return LessPrivateGlobalPrefix; + } const char *getJumpTableSpecialLabelPrefix() const { return JumpTableSpecialLabelPrefix; } @@ -623,6 +762,9 @@ namespace llvm { const char *getCStringSection() const { return CStringSection; } + const Section *getCStringSection_() const { + return CStringSection_; + } const char *getStaticCtorsSection() const { return StaticCtorsSection; } @@ -632,14 +774,20 @@ namespace llvm { const char *getFourByteConstantSection() const { return FourByteConstantSection; } + const Section *getFourByteConstantSection_() const { + return FourByteConstantSection_; + } const char *getEightByteConstantSection() const { return EightByteConstantSection; } + const Section *getEightByteConstantSection_() const { + return EightByteConstantSection_; + } const char *getSixteenByteConstantSection() const { return SixteenByteConstantSection; } - const char *getReadOnlySection() const { - return ReadOnlySection; + const Section *getSixteenByteConstantSection_() const { + return SixteenByteConstantSection_; } const char *getGlobalDirective() const { return GlobalDirective;