#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 <cassert>
#include <string>
namespace llvm {
- // DWARF encoding query type
- namespace DwarfEncoding {
- enum Target {
- Data = 0,
- CodeLabels = 1,
- Functions = 2
- };
- }
-
- namespace SectionKind {
- enum Kind {
- Unknown = 0, ///< Custom section
- Text, ///< Text section
- Data, ///< Data section
- BSS, ///< BSS section
- 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 {
- 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; }
- };
-
- typedef DenseMap<unsigned, std::string, KeyInfo> FlagsStringsMapType;
- }
-
- class TargetMachine;
- class CallInst;
- class GlobalValue;
- class Type;
-
- class Section {
- friend class TargetAsmInfo;
- friend class StringMapEntry<Section>;
-
- 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; }
- };
-
+ template <typename T> class SmallVectorImpl;
+
/// 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<Section> 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.
/// measure inline asm instructions.
char SeparatorChar; // Defaults to ';'
+ /// CommentColumn - This indicates the comment num (zero-based) at
+ /// which asm comments should be printed.
+ unsigned CommentColumn; // Defaults to 60
+
/// CommentString - This indicates the comment character used by the
/// assembler.
const char *CommentString; // Defaults to "#"
+ /// FirstOperandColumn - The output column where the first operand
+ /// should be printed
+ unsigned FirstOperandColumn; // Defaults to 0 (ignored)
+
+ /// MaxOperandLength - The maximum length of any printed asm
+ /// operand
+ unsigned MaxOperandLength; // Defaults to 0 (ignored)
+
/// 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 ""
/// 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 "."
+ /// 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 ""
+
/// JumpTableSpecialLabelPrefix - If not null, a extra (dead) label is
/// emitted before jump tables with the specified prefix.
const char *JumpTableSpecialLabelPrefix; // Default to null.
/// FunctionAddrPrefix/Suffix - If these are nonempty, these strings
/// will enclose any GlobalVariable that points to a function.
- /// For example, this is used by the IA64 backend to materialize
- /// function descriptors, by decorating the ".data8" object with the
- /// @verbatim @fptr( ) @endverbatim
- /// link-relocation operator.
///
const char *FunctionAddrPrefix; // Defaults to ""
const char *FunctionAddrSuffix; // Defaults to ""
/// AssemblerDialect - Which dialect of an assembler variant to use.
unsigned AssemblerDialect; // Defaults to 0
- /// StringConstantPrefix - Prefix for FEs to use when generating unnamed
- /// constant strings. These names get run through the Mangler later; if
- /// you want the Mangler not to add the GlobalPrefix as well,
- /// use '\1' as the first character.
- const char *StringConstantPrefix; // Defaults to ".str"
-
+ /// AllowQuotesInName - This is true if the assembler allows for complex
+ /// symbol names to be surrounded in quotes. This defaults to false.
+ bool AllowQuotesInName;
+
//===--- Data Emission Directives -------------------------------------===//
/// ZeroDirective - this should be set to the directive used to get some
const char *Data32bitsDirective; // Defaults to "\t.long\t"
const char *Data64bitsDirective; // Defaults to "\t.quad\t"
+ /// 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 {
+ assert(AS != 0 && "Don't know the directives for default addr space");
+ return NULL;
+ }
+
//===--- Alignment Information ----------------------------------------===//
/// AlignDirective - The directive used to emit round up to an alignment
/// section with the section name and this suffix printed.
const char *SectionEndDirectiveSuffix;// Defaults to null.
- /// ConstantPoolSection - This is the section that we SwitchToSection right
- /// before emitting the constant pool for a function.
- const char *ConstantPoolSection; // Defaults to "\t.section .rodata"
-
- /// JumpTableDataSection - This is the section that we SwitchToSection right
- /// before emitting the jump tables for a function when the relocation model
- /// is not PIC.
- const char *JumpTableDataSection; // Defaults to "\t.section .rodata"
-
/// JumpTableDirective - if non-null, the directive to emit before a jump
/// table.
const char *JumpTableDirective;
- /// CStringSection - If not null, this allows for special handling of
- /// cstring constants (null terminated string that does not contain any
- /// 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.
- /// Defaults to "\t.section .ctors,\"aw\",@progbits".
- const char *StaticCtorsSection;
-
- /// StaticDtorsSection - This is the directive that is emitted to switch to
- /// a section to emit the static destructor list.
- /// Defaults to "\t.section .dtors,\"aw\",@progbits".
- const char *StaticDtorsSection;
-
- /// FourByteConstantSection, EightByteConstantSection,
- /// 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;
- const Section *SixteenByteConstantSection_;
-
//===--- 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
+ /// globals.
+ ///
+ const char *ExternDirective; // Defaults to NULL.
/// SetDirective - This is the name of a directive that can be used to tell
/// the assembler to set the value of a variable to some expression.
/// 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.
+
/// UsedDirective - This directive, if non-null, is used to declare a global
/// as being used somehow that the assembler can't see. This prevents dead
/// code elimination on some targets.
/// 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;
-
+
/// SupportsExceptionHandling - True if target supports
/// exception handling.
///
bool SupportsExceptionHandling; // Defaults to false.
-
+
/// RequiresFrameSection - true if the Dwarf2 output needs a frame section
///
bool DwarfRequiresFrameSection; // Defaults to true.
+ /// DwarfUsesInlineInfoSection - True if DwarfDebugInlineSection is used to
+ /// encode inline subroutine information.
+ bool DwarfUsesInlineInfoSection; // Defaults to false.
+
+ /// Is_EHSymbolPrivate - If set, the "_foo.eh" is made private so that it
+ /// doesn't show up in the symbol table of the object file.
+ bool Is_EHSymbolPrivate; // Defaults to true.
+
/// GlobalEHDirective - This is the directive used to make exception frame
/// tables globally visible.
///
/// DwarfPubTypesSection - Section directive for Dwarf info.
///
const char *DwarfPubTypesSection; // Defaults to ".debug_pubtypes".
-
+
+ /// DwarfDebugInlineSection - Section directive for inline info.
+ ///
+ const char *DwarfDebugInlineSection; // Defaults to ".debug_inlined"
+
/// DwarfStrSection - Section directive for Dwarf info.
///
const char *DwarfStrSection; // Defaults to ".debug_str".
///
const char *DwarfRangesSection; // Defaults to ".debug_ranges".
- /// DwarfMacInfoSection - Section directive for Dwarf info.
+ /// DwarfMacroInfoSection - Section directive for DWARF macro info.
///
- const char *DwarfMacInfoSection; // Defaults to ".debug_macinfo".
+ const char *DwarfMacroInfoSection; // Defaults to ".debug_macinfo".
/// DwarfEHFrameSection - Section directive for Exception frames.
///
const char *DwarfEHFrameSection; // Defaults to ".eh_frame".
- /// DwarfExceptionSection - Section directive for Exception table.
- ///
- const char *DwarfExceptionSection; // Defaults to ".gcc_except_table".
-
//===--- CBE Asm Translation Table -----------------------------------===//
const char *const *AsmTransCBE; // Defaults to empty
public:
- TargetAsmInfo();
+ explicit TargetAsmInfo();
virtual ~TargetAsmInfo();
- const Section* getNamedSection(const char *Name,
- unsigned Flags = SectionFlags::None) const;
- const Section* getUnnamedSection(const char *Directive,
- unsigned Flags = SectionFlags::None) const;
-
- /// Measure the specified inline asm to determine an approximation of its
- /// length.
- virtual unsigned getInlineAsmLength(const char *Str) const;
-
- /// ExpandInlineAsm - This hook allows the target to expand an inline asm
- /// call to be explicit llvm code if it wants to. This is useful for
- /// turning simple inline asms into LLVM intrinsics, which gives the
- /// compiler more information about the behavior of the code.
- virtual bool ExpandInlineAsm(CallInst *CI) const {
- return false;
- }
-
- /// 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
- /// if the symbol can be relocated.
- virtual unsigned PreferredEHDataFormat(DwarfEncoding::Target Reason,
- bool Global) const;
-
- /// SectionKindForGlobal - This hook allows the target to select proper
- /// section kind used for global emission.
- virtual SectionKind::Kind
- SectionKindForGlobal(const GlobalValue *GV) const;
-
-
- /// SectionFlagsForGlobal - This hook allows the target to select proper
- /// section flags either for given global or for section.
- virtual unsigned
- SectionFlagsForGlobal(const GlobalValue *GV = NULL,
- const char* name = NULL) const;
-
- /// SectionForGlobal - This hooks returns proper section name for given
- /// global with all necessary flags and marks.
- virtual std::string SectionForGlobal(const GlobalValue *GV) const;
-
- // Helper methods for SectionForGlobal
- virtual std::string UniqueSectionForGlobal(const GlobalValue* GV,
- SectionKind::Kind kind) const;
+ /// getSLEB128Size - Compute the number of bytes required for a signed
+ /// leb128 value.
+ static unsigned getSLEB128Size(int Value);
- const std::string& getSectionFlags(unsigned Flags) const;
- virtual std::string printSectionFlags(unsigned flags) const { return ""; }
+ /// getULEB128Size - Compute the number of bytes required for an unsigned
+ /// leb128 value.
+ static unsigned getULEB128Size(unsigned Value);
- virtual const Section* SelectSectionForGlobal(const GlobalValue *GV) const;
-
- virtual const Section* SelectSectionForMachineConst(const Type *Ty) const;
-
- // Accessors.
+ // Data directive 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 *getData8bitsDirective(unsigned AS = 0) const {
+ return AS == 0 ? Data8bitsDirective : getDataASDirective(8, AS);
}
- const char *getBSSSection() const {
- return BSSSection;
+ const char *getData16bitsDirective(unsigned AS = 0) const {
+ return AS == 0 ? Data16bitsDirective : getDataASDirective(16, AS);
}
- const Section *getBSSSection_() const {
- return BSSSection_;
+ const char *getData32bitsDirective(unsigned AS = 0) const {
+ return AS == 0 ? Data32bitsDirective : getDataASDirective(32, AS);
}
- 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 *getData64bitsDirective(unsigned AS = 0) const {
+ return AS == 0 ? Data64bitsDirective : getDataASDirective(64, AS);
}
+
+
+ // Accessors.
+ //
const char *getZeroFillDirective() const {
return ZeroFillDirective;
}
bool needsSet() const {
return NeedsSet;
}
+ unsigned getMaxInstLength() const {
+ return MaxInstLength;
+ }
const char *getPCSymbol() const {
return PCSymbol;
}
char getSeparatorChar() const {
return SeparatorChar;
}
+ unsigned getCommentColumn() const {
+ return CommentColumn;
+ }
const char *getCommentString() const {
return CommentString;
}
+ unsigned getOperandColumn(int operand) const {
+ return FirstOperandColumn + (MaxOperandLength+1)*(operand-1);
+ }
const char *getGlobalPrefix() const {
return GlobalPrefix;
}
const char *getPrivateGlobalPrefix() const {
return PrivateGlobalPrefix;
}
+ const char *getLinkerPrivateGlobalPrefix() const {
+ return LinkerPrivateGlobalPrefix;
+ }
const char *getJumpTableSpecialLabelPrefix() const {
return JumpTableSpecialLabelPrefix;
}
unsigned getAssemblerDialect() const {
return AssemblerDialect;
}
- const char *getStringConstantPrefix() const {
- return StringConstantPrefix;
+ bool doesAllowQuotesInName() const {
+ return AllowQuotesInName;
}
const char *getZeroDirective() const {
return ZeroDirective;
const char *getAscizDirective() const {
return AscizDirective;
}
- 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 *getJumpTableDirective() const {
return JumpTableDirective;
}
const char *getSectionEndDirectiveSuffix() const {
return SectionEndDirectiveSuffix;
}
- const char *getConstantPoolSection() const {
- return ConstantPoolSection;
- }
- const char *getJumpTableDataSection() const {
- return JumpTableDataSection;
- }
- const char *getCStringSection() const {
- return CStringSection;
- }
- const Section *getCStringSection_() const {
- return CStringSection_;
- }
- const char *getStaticCtorsSection() const {
- return StaticCtorsSection;
- }
- const char *getStaticDtorsSection() const {
- return StaticDtorsSection;
- }
- 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 Section *getSixteenByteConstantSection_() const {
- return SixteenByteConstantSection_;
- }
const char *getGlobalDirective() const {
return GlobalDirective;
}
+ const char *getExternDirective() const {
+ return ExternDirective;
+ }
const char *getSetDirective() const {
return SetDirective;
}
bool hasDotTypeDotSizeDirective() const {
return HasDotTypeDotSizeDirective;
}
+ bool hasSingleParameterDotFile() const {
+ return HasSingleParameterDotFile;
+ }
const char *getUsedDirective() const {
return UsedDirective;
}
bool doesDwarfRequireFrameSection() const {
return DwarfRequiresFrameSection;
}
+ bool doesDwarfUsesInlineInfoSection() const {
+ return DwarfUsesInlineInfoSection;
+ }
+ bool is_EHSymbolPrivate() const {
+ return Is_EHSymbolPrivate;
+ }
const char *getGlobalEHDirective() const {
return GlobalEHDirective;
}
const char *getDwarfPubTypesSection() const {
return DwarfPubTypesSection;
}
+ const char *getDwarfDebugInlineSection() const {
+ return DwarfDebugInlineSection;
+ }
const char *getDwarfStrSection() const {
return DwarfStrSection;
}
const char *getDwarfRangesSection() const {
return DwarfRangesSection;
}
- const char *getDwarfMacInfoSection() const {
- return DwarfMacInfoSection;
+ const char *getDwarfMacroInfoSection() const {
+ return DwarfMacroInfoSection;
}
const char *getDwarfEHFrameSection() const {
return DwarfEHFrameSection;
}
- const char *getDwarfExceptionSection() const {
- return DwarfExceptionSection;
- }
const char *const *getAsmCBE() const {
return AsmTransCBE;
}
}
#endif
-
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