| //===-- llvm/BinaryFormat/Dwarf.h ---Dwarf Constants-------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| /// \file |
| /// This file contains constants used for implementing Dwarf |
| /// debug support. |
| /// |
| /// For details on the Dwarf specfication see the latest DWARF Debugging |
| /// Information Format standard document on http://www.dwarfstd.org. This |
| /// file often includes support for non-released standard features. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_BINARYFORMAT_DWARF_H |
| #define LLVM_BINARYFORMAT_DWARF_H |
| |
| #include "llvm/ADT/Optional.h" |
| #include "llvm/Support/Compiler.h" |
| #include "llvm/Support/DataTypes.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/Format.h" |
| #include "llvm/Support/FormatVariadicDetails.h" |
| |
| namespace llvm { |
| class StringRef; |
| |
| namespace dwarf { |
| |
| //===----------------------------------------------------------------------===// |
| // DWARF constants as gleaned from the DWARF Debugging Information Format V.5 |
| // reference manual http://www.dwarfstd.org/. |
| // |
| |
| // Do not mix the following two enumerations sets. DW_TAG_invalid changes the |
| // enumeration base type. |
| |
| enum LLVMConstants : uint32_t { |
| // LLVM mock tags (see also llvm/BinaryFormat/Dwarf.def). |
| DW_TAG_invalid = ~0U, // Tag for invalid results. |
| DW_VIRTUALITY_invalid = ~0U, // Virtuality for invalid results. |
| DW_MACINFO_invalid = ~0U, // Macinfo type for invalid results. |
| |
| // Other constants. |
| DWARF_VERSION = 4, // Default dwarf version we output. |
| DW_PUBTYPES_VERSION = 2, // Section version number for .debug_pubtypes. |
| DW_PUBNAMES_VERSION = 2, // Section version number for .debug_pubnames. |
| DW_ARANGES_VERSION = 2, // Section version number for .debug_aranges. |
| // Identifiers we use to distinguish vendor extensions. |
| DWARF_VENDOR_DWARF = 0, // Defined in v2 or later of the DWARF standard. |
| DWARF_VENDOR_APPLE = 1, |
| DWARF_VENDOR_BORLAND = 2, |
| DWARF_VENDOR_GNU = 3, |
| DWARF_VENDOR_GOOGLE = 4, |
| DWARF_VENDOR_LLVM = 5, |
| DWARF_VENDOR_MIPS = 6 |
| }; |
| |
| /// Constants that define the DWARF format as 32 or 64 bit. |
| enum DwarfFormat : uint8_t { DWARF32, DWARF64 }; |
| |
| /// Special ID values that distinguish a CIE from a FDE in DWARF CFI. |
| /// Not inside an enum because a 64-bit value is needed. |
| /// @{ |
| const uint32_t DW_CIE_ID = UINT32_MAX; |
| const uint64_t DW64_CIE_ID = UINT64_MAX; |
| /// @} |
| |
| /// Identifier of an invalid DIE offset in the .debug_info section. |
| const uint32_t DW_INVALID_OFFSET = UINT32_MAX; |
| |
| enum Tag : uint16_t { |
| #define HANDLE_DW_TAG(ID, NAME, VERSION, VENDOR) DW_TAG_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_TAG_lo_user = 0x4080, |
| DW_TAG_hi_user = 0xffff, |
| DW_TAG_user_base = 0x1000 ///< Recommended base for user tags. |
| }; |
| |
| inline bool isType(Tag T) { |
| switch (T) { |
| case DW_TAG_array_type: |
| case DW_TAG_class_type: |
| case DW_TAG_interface_type: |
| case DW_TAG_enumeration_type: |
| case DW_TAG_pointer_type: |
| case DW_TAG_reference_type: |
| case DW_TAG_rvalue_reference_type: |
| case DW_TAG_string_type: |
| case DW_TAG_structure_type: |
| case DW_TAG_subroutine_type: |
| case DW_TAG_union_type: |
| case DW_TAG_ptr_to_member_type: |
| case DW_TAG_set_type: |
| case DW_TAG_subrange_type: |
| case DW_TAG_base_type: |
| case DW_TAG_const_type: |
| case DW_TAG_file_type: |
| case DW_TAG_packed_type: |
| case DW_TAG_volatile_type: |
| case DW_TAG_typedef: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| /// Attributes. |
| enum Attribute : uint16_t { |
| #define HANDLE_DW_AT(ID, NAME, VERSION, VENDOR) DW_AT_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_AT_lo_user = 0x2000, |
| DW_AT_hi_user = 0x3fff, |
| }; |
| |
| enum Form : uint16_t { |
| #define HANDLE_DW_FORM(ID, NAME, VERSION, VENDOR) DW_FORM_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_FORM_lo_user = 0x1f00, ///< Not specified by DWARF. |
| }; |
| |
| enum LocationAtom { |
| #define HANDLE_DW_OP(ID, NAME, VERSION, VENDOR) DW_OP_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_OP_lo_user = 0xe0, |
| DW_OP_hi_user = 0xff, |
| DW_OP_LLVM_fragment = 0x1000 ///< Only used in LLVM metadata. |
| }; |
| |
| enum TypeKind : uint8_t { |
| #define HANDLE_DW_ATE(ID, NAME, VERSION, VENDOR) DW_ATE_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_ATE_lo_user = 0x80, |
| DW_ATE_hi_user = 0xff |
| }; |
| |
| enum DecimalSignEncoding { |
| // Decimal sign attribute values |
| DW_DS_unsigned = 0x01, |
| DW_DS_leading_overpunch = 0x02, |
| DW_DS_trailing_overpunch = 0x03, |
| DW_DS_leading_separate = 0x04, |
| DW_DS_trailing_separate = 0x05 |
| }; |
| |
| enum EndianityEncoding { |
| // Endianity attribute values |
| #define HANDLE_DW_END(ID, NAME) DW_END_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_END_lo_user = 0x40, |
| DW_END_hi_user = 0xff |
| }; |
| |
| enum AccessAttribute { |
| // Accessibility codes |
| DW_ACCESS_public = 0x01, |
| DW_ACCESS_protected = 0x02, |
| DW_ACCESS_private = 0x03 |
| }; |
| |
| enum VisibilityAttribute { |
| // Visibility codes |
| DW_VIS_local = 0x01, |
| DW_VIS_exported = 0x02, |
| DW_VIS_qualified = 0x03 |
| }; |
| |
| enum VirtualityAttribute { |
| #define HANDLE_DW_VIRTUALITY(ID, NAME) DW_VIRTUALITY_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_VIRTUALITY_max = 0x02 |
| }; |
| |
| enum DefaultedMemberAttribute { |
| #define HANDLE_DW_DEFAULTED(ID, NAME) DW_DEFAULTED_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_DEFAULTED_max = 0x02 |
| }; |
| |
| enum SourceLanguage { |
| #define HANDLE_DW_LANG(ID, NAME, VERSION, VENDOR) DW_LANG_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_LANG_lo_user = 0x8000, |
| DW_LANG_hi_user = 0xffff |
| }; |
| |
| enum CaseSensitivity { |
| // Identifier case codes |
| DW_ID_case_sensitive = 0x00, |
| DW_ID_up_case = 0x01, |
| DW_ID_down_case = 0x02, |
| DW_ID_case_insensitive = 0x03 |
| }; |
| |
| enum CallingConvention { |
| // Calling convention codes |
| #define HANDLE_DW_CC(ID, NAME) DW_CC_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_CC_lo_user = 0x40, |
| DW_CC_hi_user = 0xff |
| }; |
| |
| enum InlineAttribute { |
| // Inline codes |
| DW_INL_not_inlined = 0x00, |
| DW_INL_inlined = 0x01, |
| DW_INL_declared_not_inlined = 0x02, |
| DW_INL_declared_inlined = 0x03 |
| }; |
| |
| enum ArrayDimensionOrdering { |
| // Array ordering |
| DW_ORD_row_major = 0x00, |
| DW_ORD_col_major = 0x01 |
| }; |
| |
| enum DiscriminantList { |
| // Discriminant descriptor values |
| DW_DSC_label = 0x00, |
| DW_DSC_range = 0x01 |
| }; |
| |
| /// Line Number Standard Opcode Encodings. |
| enum LineNumberOps : uint8_t { |
| #define HANDLE_DW_LNS(ID, NAME) DW_LNS_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| }; |
| |
| /// Line Number Extended Opcode Encodings. |
| enum LineNumberExtendedOps { |
| #define HANDLE_DW_LNE(ID, NAME) DW_LNE_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_LNE_lo_user = 0x80, |
| DW_LNE_hi_user = 0xff |
| }; |
| |
| enum LineNumberEntryFormat { |
| #define HANDLE_DW_LNCT(ID, NAME) DW_LNCT_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_LNCT_lo_user = 0x2000, |
| DW_LNCT_hi_user = 0x3fff, |
| }; |
| |
| enum MacinfoRecordType { |
| // Macinfo Type Encodings |
| DW_MACINFO_define = 0x01, |
| DW_MACINFO_undef = 0x02, |
| DW_MACINFO_start_file = 0x03, |
| DW_MACINFO_end_file = 0x04, |
| DW_MACINFO_vendor_ext = 0xff |
| }; |
| |
| /// DWARF v5 macro information entry type encodings. |
| enum MacroEntryType { |
| #define HANDLE_DW_MACRO(ID, NAME) DW_MACRO_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_MACRO_lo_user = 0xe0, |
| DW_MACRO_hi_user = 0xff |
| }; |
| |
| /// DWARF v5 range list entry encoding values. |
| enum RangeListEntries { |
| #define HANDLE_DW_RLE(ID, NAME) DW_RLE_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| }; |
| |
| /// Call frame instruction encodings. |
| enum CallFrameInfo { |
| #define HANDLE_DW_CFA(ID, NAME) DW_CFA_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_CFA_extended = 0x00, |
| |
| DW_CFA_lo_user = 0x1c, |
| DW_CFA_hi_user = 0x3f |
| }; |
| |
| enum Constants { |
| // Children flag |
| DW_CHILDREN_no = 0x00, |
| DW_CHILDREN_yes = 0x01, |
| |
| DW_EH_PE_absptr = 0x00, |
| DW_EH_PE_omit = 0xff, |
| DW_EH_PE_uleb128 = 0x01, |
| DW_EH_PE_udata2 = 0x02, |
| DW_EH_PE_udata4 = 0x03, |
| DW_EH_PE_udata8 = 0x04, |
| DW_EH_PE_sleb128 = 0x09, |
| DW_EH_PE_sdata2 = 0x0A, |
| DW_EH_PE_sdata4 = 0x0B, |
| DW_EH_PE_sdata8 = 0x0C, |
| DW_EH_PE_signed = 0x08, |
| DW_EH_PE_pcrel = 0x10, |
| DW_EH_PE_textrel = 0x20, |
| DW_EH_PE_datarel = 0x30, |
| DW_EH_PE_funcrel = 0x40, |
| DW_EH_PE_aligned = 0x50, |
| DW_EH_PE_indirect = 0x80 |
| }; |
| |
| /// Constants for location lists in DWARF v5. |
| enum LocationListEntry : unsigned char { |
| DW_LLE_end_of_list = 0x00, |
| DW_LLE_base_addressx = 0x01, |
| DW_LLE_startx_endx = 0x02, |
| DW_LLE_startx_length = 0x03, |
| DW_LLE_offset_pair = 0x04, |
| DW_LLE_default_location = 0x05, |
| DW_LLE_base_address = 0x06, |
| DW_LLE_start_end = 0x07, |
| DW_LLE_start_length = 0x08 |
| }; |
| |
| /// Constants for the DW_APPLE_PROPERTY_attributes attribute. |
| /// Keep this list in sync with clang's DeclSpec.h ObjCPropertyAttributeKind! |
| enum ApplePropertyAttributes { |
| #define HANDLE_DW_APPLE_PROPERTY(ID, NAME) DW_APPLE_PROPERTY_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| }; |
| |
| /// Constants for unit types in DWARF v5. |
| enum UnitType : unsigned char { |
| #define HANDLE_DW_UT(ID, NAME) DW_UT_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_UT_lo_user = 0x80, |
| DW_UT_hi_user = 0xff |
| }; |
| |
| enum Index { |
| #define HANDLE_DW_IDX(ID, NAME) DW_IDX_##NAME = ID, |
| #include "llvm/BinaryFormat/Dwarf.def" |
| DW_IDX_lo_user = 0x2000, |
| DW_IDX_hi_user = 0x3fff |
| }; |
| |
| inline bool isUnitType(uint8_t UnitType) { |
| switch (UnitType) { |
| case DW_UT_compile: |
| case DW_UT_type: |
| case DW_UT_partial: |
| case DW_UT_skeleton: |
| case DW_UT_split_compile: |
| case DW_UT_split_type: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| inline bool isUnitType(dwarf::Tag T) { |
| switch (T) { |
| case DW_TAG_compile_unit: |
| case DW_TAG_type_unit: |
| case DW_TAG_partial_unit: |
| case DW_TAG_skeleton_unit: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| // Constants for the DWARF v5 Accelerator Table Proposal |
| enum AcceleratorTable { |
| // Data layout descriptors. |
| DW_ATOM_null = 0u, /// Marker as the end of a list of atoms. |
| DW_ATOM_die_offset = 1u, // DIE offset in the debug_info section. |
| DW_ATOM_cu_offset = 2u, // Offset of the compile unit header that contains the |
| // item in question. |
| DW_ATOM_die_tag = 3u, // A tag entry. |
| DW_ATOM_type_flags = 4u, // Set of flags for a type. |
| |
| DW_ATOM_type_type_flags = 5u, // Dsymutil type extension. |
| DW_ATOM_qual_name_hash = 6u, // Dsymutil qualified hash extension. |
| |
| // DW_ATOM_type_flags values. |
| |
| // Always set for C++, only set for ObjC if this is the @implementation for a |
| // class. |
| DW_FLAG_type_implementation = 2u, |
| |
| // Hash functions. |
| |
| // Daniel J. Bernstein hash. |
| DW_hash_function_djb = 0u |
| }; |
| |
| // Constants for the GNU pubnames/pubtypes extensions supporting gdb index. |
| enum GDBIndexEntryKind { |
| GIEK_NONE, |
| GIEK_TYPE, |
| GIEK_VARIABLE, |
| GIEK_FUNCTION, |
| GIEK_OTHER, |
| GIEK_UNUSED5, |
| GIEK_UNUSED6, |
| GIEK_UNUSED7 |
| }; |
| |
| enum GDBIndexEntryLinkage { GIEL_EXTERNAL, GIEL_STATIC }; |
| |
| /// \defgroup DwarfConstantsDumping Dwarf constants dumping functions |
| /// |
| /// All these functions map their argument's value back to the |
| /// corresponding enumerator name or return an empty StringRef if the value |
| /// isn't known. |
| /// |
| /// @{ |
| StringRef TagString(unsigned Tag); |
| StringRef ChildrenString(unsigned Children); |
| StringRef AttributeString(unsigned Attribute); |
| StringRef FormEncodingString(unsigned Encoding); |
| StringRef OperationEncodingString(unsigned Encoding); |
| StringRef AttributeEncodingString(unsigned Encoding); |
| StringRef DecimalSignString(unsigned Sign); |
| StringRef EndianityString(unsigned Endian); |
| StringRef AccessibilityString(unsigned Access); |
| StringRef VisibilityString(unsigned Visibility); |
| StringRef VirtualityString(unsigned Virtuality); |
| StringRef LanguageString(unsigned Language); |
| StringRef CaseString(unsigned Case); |
| StringRef ConventionString(unsigned Convention); |
| StringRef InlineCodeString(unsigned Code); |
| StringRef ArrayOrderString(unsigned Order); |
| StringRef LNStandardString(unsigned Standard); |
| StringRef LNExtendedString(unsigned Encoding); |
| StringRef MacinfoString(unsigned Encoding); |
| StringRef RangeListEncodingString(unsigned Encoding); |
| StringRef CallFrameString(unsigned Encoding); |
| StringRef ApplePropertyString(unsigned); |
| StringRef UnitTypeString(unsigned); |
| StringRef AtomTypeString(unsigned Atom); |
| StringRef GDBIndexEntryKindString(GDBIndexEntryKind Kind); |
| StringRef GDBIndexEntryLinkageString(GDBIndexEntryLinkage Linkage); |
| StringRef IndexString(unsigned Idx); |
| /// @} |
| |
| /// \defgroup DwarfConstantsParsing Dwarf constants parsing functions |
| /// |
| /// These functions map their strings back to the corresponding enumeration |
| /// value or return 0 if there is none, except for these exceptions: |
| /// |
| /// \li \a getTag() returns \a DW_TAG_invalid on invalid input. |
| /// \li \a getVirtuality() returns \a DW_VIRTUALITY_invalid on invalid input. |
| /// \li \a getMacinfo() returns \a DW_MACINFO_invalid on invalid input. |
| /// |
| /// @{ |
| unsigned getTag(StringRef TagString); |
| unsigned getOperationEncoding(StringRef OperationEncodingString); |
| unsigned getVirtuality(StringRef VirtualityString); |
| unsigned getLanguage(StringRef LanguageString); |
| unsigned getCallingConvention(StringRef LanguageString); |
| unsigned getAttributeEncoding(StringRef EncodingString); |
| unsigned getMacinfo(StringRef MacinfoString); |
| /// @} |
| |
| /// \defgroup DwarfConstantsVersioning Dwarf version for constants |
| /// |
| /// For constants defined by DWARF, returns the DWARF version when the constant |
| /// was first defined. For vendor extensions, if there is a version-related |
| /// policy for when to emit it, returns a version number for that policy. |
| /// Otherwise returns 0. |
| /// |
| /// @{ |
| unsigned TagVersion(Tag T); |
| unsigned AttributeVersion(Attribute A); |
| unsigned FormVersion(Form F); |
| unsigned OperationVersion(LocationAtom O); |
| unsigned AttributeEncodingVersion(TypeKind E); |
| unsigned LanguageVersion(SourceLanguage L); |
| /// @} |
| |
| /// \defgroup DwarfConstantsVendor Dwarf "vendor" for constants |
| /// |
| /// These functions return an identifier describing "who" defined the constant, |
| /// either the DWARF standard itself or the vendor who defined the extension. |
| /// |
| /// @{ |
| unsigned TagVendor(Tag T); |
| unsigned AttributeVendor(Attribute A); |
| unsigned FormVendor(Form F); |
| unsigned OperationVendor(LocationAtom O); |
| unsigned AttributeEncodingVendor(TypeKind E); |
| unsigned LanguageVendor(SourceLanguage L); |
| /// @} |
| |
| /// A helper struct providing information about the byte size of DW_FORM |
| /// values that vary in size depending on the DWARF version, address byte |
| /// size, or DWARF32/DWARF64. |
| struct FormParams { |
| uint16_t Version; |
| uint8_t AddrSize; |
| DwarfFormat Format; |
| |
| /// The definition of the size of form DW_FORM_ref_addr depends on the |
| /// version. In DWARF v2 it's the size of an address; after that, it's the |
| /// size of a reference. |
| uint8_t getRefAddrByteSize() const { |
| if (Version == 2) |
| return AddrSize; |
| return getDwarfOffsetByteSize(); |
| } |
| |
| /// The size of a reference is determined by the DWARF 32/64-bit format. |
| uint8_t getDwarfOffsetByteSize() const { |
| switch (Format) { |
| case DwarfFormat::DWARF32: |
| return 4; |
| case DwarfFormat::DWARF64: |
| return 8; |
| } |
| llvm_unreachable("Invalid Format value"); |
| } |
| |
| explicit operator bool() const { return Version && AddrSize; } |
| }; |
| |
| /// Get the fixed byte size for a given form. |
| /// |
| /// If the form has a fixed byte size, then an Optional with a value will be |
| /// returned. If the form is always encoded using a variable length storage |
| /// format (ULEB or SLEB numbers or blocks) then None will be returned. |
| /// |
| /// \param Form DWARF form to get the fixed byte size for. |
| /// \param Params DWARF parameters to help interpret forms. |
| /// \returns Optional<uint8_t> value with the fixed byte size or None if |
| /// \p Form doesn't have a fixed byte size. |
| Optional<uint8_t> getFixedFormByteSize(dwarf::Form Form, FormParams Params); |
| |
| /// Tells whether the specified form is defined in the specified version, |
| /// or is an extension if extensions are allowed. |
| bool isValidFormForVersion(Form F, unsigned Version, bool ExtensionsOk = true); |
| |
| /// Returns the symbolic string representing Val when used as a value |
| /// for attribute Attr. |
| StringRef AttributeValueString(uint16_t Attr, unsigned Val); |
| |
| /// Returns the symbolic string representing Val when used as a value |
| /// for atom Atom. |
| StringRef AtomValueString(uint16_t Atom, unsigned Val); |
| |
| /// Describes an entry of the various gnu_pub* debug sections. |
| /// |
| /// The gnu_pub* kind looks like: |
| /// |
| /// 0-3 reserved |
| /// 4-6 symbol kind |
| /// 7 0 == global, 1 == static |
| /// |
| /// A gdb_index descriptor includes the above kind, shifted 24 bits up with the |
| /// offset of the cu within the debug_info section stored in those 24 bits. |
| struct PubIndexEntryDescriptor { |
| GDBIndexEntryKind Kind; |
| GDBIndexEntryLinkage Linkage; |
| PubIndexEntryDescriptor(GDBIndexEntryKind Kind, GDBIndexEntryLinkage Linkage) |
| : Kind(Kind), Linkage(Linkage) {} |
| /* implicit */ PubIndexEntryDescriptor(GDBIndexEntryKind Kind) |
| : Kind(Kind), Linkage(GIEL_EXTERNAL) {} |
| explicit PubIndexEntryDescriptor(uint8_t Value) |
| : Kind( |
| static_cast<GDBIndexEntryKind>((Value & KIND_MASK) >> KIND_OFFSET)), |
| Linkage(static_cast<GDBIndexEntryLinkage>((Value & LINKAGE_MASK) >> |
| LINKAGE_OFFSET)) {} |
| uint8_t toBits() const { |
| return Kind << KIND_OFFSET | Linkage << LINKAGE_OFFSET; |
| } |
| |
| private: |
| enum { |
| KIND_OFFSET = 4, |
| KIND_MASK = 7 << KIND_OFFSET, |
| LINKAGE_OFFSET = 7, |
| LINKAGE_MASK = 1 << LINKAGE_OFFSET |
| }; |
| }; |
| |
| template <typename Enum> struct EnumTraits : public std::false_type {}; |
| |
| template <> struct EnumTraits<Attribute> : public std::true_type { |
| static constexpr char Type[3] = "AT"; |
| static constexpr StringRef (*StringFn)(unsigned) = &AttributeString; |
| }; |
| |
| template <> struct EnumTraits<Form> : public std::true_type { |
| static constexpr char Type[5] = "FORM"; |
| static constexpr StringRef (*StringFn)(unsigned) = &FormEncodingString; |
| }; |
| |
| template <> struct EnumTraits<Index> : public std::true_type { |
| static constexpr char Type[4] = "IDX"; |
| static constexpr StringRef (*StringFn)(unsigned) = &IndexString; |
| }; |
| |
| template <> struct EnumTraits<Tag> : public std::true_type { |
| static constexpr char Type[4] = "TAG"; |
| static constexpr StringRef (*StringFn)(unsigned) = &TagString; |
| }; |
| } // End of namespace dwarf |
| |
| /// Dwarf constants format_provider |
| /// |
| /// Specialization of the format_provider template for dwarf enums. Unlike the |
| /// dumping functions above, these format unknown enumerator values as |
| /// DW_TYPE_unknown_1234 (e.g. DW_TAG_unknown_ffff). |
| template <typename Enum> |
| struct format_provider< |
| Enum, typename std::enable_if<dwarf::EnumTraits<Enum>::value>::type> { |
| static void format(const Enum &E, raw_ostream &OS, StringRef Style) { |
| StringRef Str = dwarf::EnumTraits<Enum>::StringFn(E); |
| if (Str.empty()) { |
| OS << "DW_" << dwarf::EnumTraits<Enum>::Type << "_unknown_" |
| << llvm::format("%x", E); |
| } else |
| OS << Str; |
| } |
| }; |
| } // End of namespace llvm |
| |
| #endif |