diff options
Diffstat (limited to 'lib/CodeGen/DwarfWriter.cpp')
| -rw-r--r-- | lib/CodeGen/DwarfWriter.cpp | 913 |
1 files changed, 357 insertions, 556 deletions
diff --git a/lib/CodeGen/DwarfWriter.cpp b/lib/CodeGen/DwarfWriter.cpp index c714cad5ce..fee0a654d3 100644 --- a/lib/CodeGen/DwarfWriter.cpp +++ b/lib/CodeGen/DwarfWriter.cpp @@ -26,563 +26,338 @@ #include <iostream> using namespace llvm; +using namespace dwarf; static cl::opt<bool> DwarfVerbose("dwarf-verbose", cl::Hidden, cl::desc("Add comments to Dwarf directives.")); +namespace llvm { + //===----------------------------------------------------------------------===// +// Forward declarations. +// +class CompileUnit; +class DIE; -/// TagString - Return the string for the specified tag. -/// -static const char *TagString(unsigned Tag) { - switch(Tag) { - case DW_TAG_array_type: return "TAG_array_type"; - case DW_TAG_class_type: return "TAG_class_type"; - case DW_TAG_entry_point: return "TAG_entry_point"; - case DW_TAG_enumeration_type: return "TAG_enumeration_type"; - case DW_TAG_formal_parameter: return "TAG_formal_parameter"; - case DW_TAG_imported_declaration: return "TAG_imported_declaration"; - case DW_TAG_label: return "TAG_label"; - case DW_TAG_lexical_block: return "TAG_lexical_block"; - case DW_TAG_member: return "TAG_member"; - case DW_TAG_pointer_type: return "TAG_pointer_type"; - case DW_TAG_reference_type: return "TAG_reference_type"; - case DW_TAG_compile_unit: return "TAG_compile_unit"; - case DW_TAG_string_type: return "TAG_string_type"; - case DW_TAG_structure_type: return "TAG_structure_type"; - case DW_TAG_subroutine_type: return "TAG_subroutine_type"; - case DW_TAG_typedef: return "TAG_typedef"; - case DW_TAG_union_type: return "TAG_union_type"; - case DW_TAG_unspecified_parameters: return "TAG_unspecified_parameters"; - case DW_TAG_variant: return "TAG_variant"; - case DW_TAG_common_block: return "TAG_common_block"; - case DW_TAG_common_inclusion: return "TAG_common_inclusion"; - case DW_TAG_inheritance: return "TAG_inheritance"; - case DW_TAG_inlined_subroutine: return "TAG_inlined_subroutine"; - case DW_TAG_module: return "TAG_module"; - case DW_TAG_ptr_to_member_type: return "TAG_ptr_to_member_type"; - case DW_TAG_set_type: return "TAG_set_type"; - case DW_TAG_subrange_type: return "TAG_subrange_type"; - case DW_TAG_with_stmt: return "TAG_with_stmt"; - case DW_TAG_access_declaration: return "TAG_access_declaration"; - case DW_TAG_base_type: return "TAG_base_type"; - case DW_TAG_catch_block: return "TAG_catch_block"; - case DW_TAG_const_type: return "TAG_const_type"; - case DW_TAG_constant: return "TAG_constant"; - case DW_TAG_enumerator: return "TAG_enumerator"; - case DW_TAG_file_type: return "TAG_file_type"; - case DW_TAG_friend: return "TAG_friend"; - case DW_TAG_namelist: return "TAG_namelist"; - case DW_TAG_namelist_item: return "TAG_namelist_item"; - case DW_TAG_packed_type: return "TAG_packed_type"; - case DW_TAG_subprogram: return "TAG_subprogram"; - case DW_TAG_template_type_parameter: return "TAG_template_type_parameter"; - case DW_TAG_template_value_parameter: return "TAG_template_value_parameter"; - case DW_TAG_thrown_type: return "TAG_thrown_type"; - case DW_TAG_try_block: return "TAG_try_block"; - case DW_TAG_variant_part: return "TAG_variant_part"; - case DW_TAG_variable: return "TAG_variable"; - case DW_TAG_volatile_type: return "TAG_volatile_type"; - case DW_TAG_dwarf_procedure: return "TAG_dwarf_procedure"; - case DW_TAG_restrict_type: return "TAG_restrict_type"; - case DW_TAG_interface_type: return "TAG_interface_type"; - case DW_TAG_namespace: return "TAG_namespace"; - case DW_TAG_imported_module: return "TAG_imported_module"; - case DW_TAG_unspecified_type: return "TAG_unspecified_type"; - case DW_TAG_partial_unit: return "TAG_partial_unit"; - case DW_TAG_imported_unit: return "TAG_imported_unit"; - case DW_TAG_condition: return "TAG_condition"; - case DW_TAG_shared_type: return "TAG_shared_type"; - case DW_TAG_lo_user: return "TAG_lo_user"; - case DW_TAG_hi_user: return "TAG_hi_user"; +//===----------------------------------------------------------------------===// +// DIEAbbrevData - Dwarf abbreviation data, describes the one attribute of a +// Dwarf abbreviation. +class DIEAbbrevData { +private: + unsigned Attribute; // Dwarf attribute code. + unsigned Form; // Dwarf form code. + +public: + DIEAbbrevData(unsigned A, unsigned F) + : Attribute(A) + , Form(F) + {} + + // Accessors + unsigned getAttribute() const { return Attribute; } + unsigned getForm() const { return Form; } + + /// operator== - Used by DIEAbbrev to locate entry. + /// + bool operator==(const DIEAbbrevData &DAD) const { + return Attribute == DAD.Attribute && Form == DAD.Form; } - assert(0 && "Unknown Dwarf Tag"); - return ""; -} -/// ChildrenString - Return the string for the specified children flag. -/// -static const char *ChildrenString(unsigned Children) { - switch(Children) { - case DW_CHILDREN_no: return "CHILDREN_no"; - case DW_CHILDREN_yes: return "CHILDREN_yes"; + /// operator!= - Used by DIEAbbrev to locate entry. + /// + bool operator!=(const DIEAbbrevData &DAD) const { + return Attribute != DAD.Attribute || Form != DAD.Form; } - assert(0 && "Unknown Dwarf ChildrenFlag"); - return ""; -} - -/// AttributeString - Return the string for the specified attribute. -/// -static const char *AttributeString(unsigned Attribute) { - switch(Attribute) { - case DW_AT_sibling: return "AT_sibling"; - case DW_AT_location: return "AT_location"; - case DW_AT_name: return "AT_name"; - case DW_AT_ordering: return "AT_ordering"; - case DW_AT_byte_size: return "AT_byte_size"; - case DW_AT_bit_offset: return "AT_bit_offset"; - case DW_AT_bit_size: return "AT_bit_size"; - case DW_AT_stmt_list: return "AT_stmt_list"; - case DW_AT_low_pc: return "AT_low_pc"; - case DW_AT_high_pc: return "AT_high_pc"; - case DW_AT_language: return "AT_language"; - case DW_AT_discr: return "AT_discr"; - case DW_AT_discr_value: return "AT_discr_value"; - case DW_AT_visibility: return "AT_visibility"; - case DW_AT_import: return "AT_import"; - case DW_AT_string_length: return "AT_string_length"; - case DW_AT_common_reference: return "AT_common_reference"; - case DW_AT_comp_dir: return "AT_comp_dir"; - case DW_AT_const_value: return "AT_const_value"; - case DW_AT_containing_type: return "AT_containing_type"; - case DW_AT_default_value: return "AT_default_value"; - case DW_AT_inline: return "AT_inline"; - case DW_AT_is_optional: return "AT_is_optional"; - case DW_AT_lower_bound: return "AT_lower_bound"; - case DW_AT_producer: return "AT_producer"; - case DW_AT_prototyped: return "AT_prototyped"; - case DW_AT_return_addr: return "AT_return_addr"; - case DW_AT_start_scope: return "AT_start_scope"; - case DW_AT_bit_stride: return "AT_bit_stride"; - case DW_AT_upper_bound: return "AT_upper_bound"; - case DW_AT_abstract_origin: return "AT_abstract_origin"; - case DW_AT_accessibility: return "AT_accessibility"; - case DW_AT_address_class: return "AT_address_class"; - case DW_AT_artificial: return "AT_artificial"; - case DW_AT_base_types: return "AT_base_types"; - case DW_AT_calling_convention: return "AT_calling_convention"; - case DW_AT_count: return "AT_count"; - case DW_AT_data_member_location: return "AT_data_member_location"; - case DW_AT_decl_column: return "AT_decl_column"; - case DW_AT_decl_file: return "AT_decl_file"; - case DW_AT_decl_line: return "AT_decl_line"; - case DW_AT_declaration: return "AT_declaration"; - case DW_AT_discr_list: return "AT_discr_list"; - case DW_AT_encoding: return "AT_encoding"; - case DW_AT_external: return "AT_external"; - case DW_AT_frame_base: return "AT_frame_base"; - case DW_AT_friend: return "AT_friend"; - case DW_AT_identifier_case: return "AT_identifier_case"; - case DW_AT_macro_info: return "AT_macro_info"; - case DW_AT_namelist_item: return "AT_namelist_item"; - case DW_AT_priority: return "AT_priority"; - case DW_AT_segment: return "AT_segment"; - case DW_AT_specification: return "AT_specification"; - case DW_AT_static_link: return "AT_static_link"; - case DW_AT_type: return "AT_type"; - case DW_AT_use_location: return "AT_use_location"; - case DW_AT_variable_parameter: return "AT_variable_parameter"; - case DW_AT_virtuality: return "AT_virtuality"; - case DW_AT_vtable_elem_location: return "AT_vtable_elem_location"; - case DW_AT_allocated: return "AT_allocated"; - case DW_AT_associated: return "AT_associated"; - case DW_AT_data_location: return "AT_data_location"; - case DW_AT_byte_stride: return "AT_byte_stride"; - case DW_AT_entry_pc: return "AT_entry_pc"; - case DW_AT_use_UTF8: return "AT_use_UTF8"; - case DW_AT_extension: return "AT_extension"; - case DW_AT_ranges: return "AT_ranges"; - case DW_AT_trampoline: return "AT_trampoline"; - case DW_AT_call_column: return "AT_call_column"; - case DW_AT_call_file: return "AT_call_file"; - case DW_AT_call_line: return "AT_call_line"; - case DW_AT_description: return "AT_description"; - case DW_AT_binary_scale: return "AT_binary_scale"; - case DW_AT_decimal_scale: return "AT_decimal_scale"; - case DW_AT_small: return "AT_small"; - case DW_AT_decimal_sign: return "AT_decimal_sign"; - case DW_AT_digit_count: return "AT_digit_count"; - case DW_AT_picture_string: return "AT_picture_string"; - case DW_AT_mutable: return "AT_mutable"; - case DW_AT_threads_scaled: return "AT_threads_scaled"; - case DW_AT_explicit: return "AT_explicit"; - case DW_AT_object_pointer: return "AT_object_pointer"; - case DW_AT_endianity: return "AT_endianity"; - case DW_AT_elemental: return "AT_elemental"; - case DW_AT_pure: return "AT_pure"; - case DW_AT_recursive: return "AT_recursive"; - case DW_AT_lo_user: return "AT_lo_user"; - case DW_AT_hi_user: return "AT_hi_user"; + + /// operator< - Used by DIEAbbrev to locate entry. + /// + bool operator<(const DIEAbbrevData &DAD) const { + return Attribute < DAD.Attribute || + (Attribute == DAD.Attribute && Form < DAD.Form); } - assert(0 && "Unknown Dwarf Attribute"); - return ""; -} +}; -/// FormEncodingString - Return the string for the specified form encoding. -/// -static const char *FormEncodingString(unsigned Encoding) { - switch(Encoding) { - case DW_FORM_addr: return "FORM_addr"; - case DW_FORM_block2: return "FORM_block2"; - case DW_FORM_block4: return "FORM_block4"; - case DW_FORM_data2: return "FORM_data2"; - case DW_FORM_data4: return "FORM_data4"; - case DW_FORM_data8: return "FORM_data8"; - case DW_FORM_string: return "FORM_string"; - case DW_FORM_block: return "FORM_block"; - case DW_FORM_block1: return "FORM_block1"; - case DW_FORM_data1: return "FORM_data1"; - case DW_FORM_flag: return "FORM_flag"; - case DW_FORM_sdata: return "FORM_sdata"; - case DW_FORM_strp: return "FORM_strp"; - case DW_FORM_udata: return "FORM_udata"; - case DW_FORM_ref_addr: return "FORM_ref_addr"; - case DW_FORM_ref1: return "FORM_ref1"; - case DW_FORM_ref2: return "FORM_ref2"; - case DW_FORM_ref4: return "FORM_ref4"; - case DW_FORM_ref8: return "FORM_ref8"; - case DW_FORM_ref_udata: return "FORM_ref_udata"; - case DW_FORM_indirect: return "FORM_indirect"; - } - assert(0 && "Unknown Dwarf Form Encoding"); - return ""; -} - -/// OperationEncodingString - Return the string for the specified operation -/// encoding. -static const char *OperationEncodingString(unsigned Encoding) { - switch(Encoding) { - case DW_OP_addr: return "OP_addr"; - case DW_OP_deref: return "OP_deref"; - case DW_OP_const1u: return "OP_const1u"; - case DW_OP_const1s: return "OP_const1s"; - case DW_OP_const2u: return "OP_const2u"; - case DW_OP_const2s: return "OP_const2s"; - case DW_OP_const4u: return "OP_const4u"; - case DW_OP_const4s: return "OP_const4s"; - case DW_OP_const8u: return "OP_const8u"; - case DW_OP_const8s: return "OP_const8s"; - case DW_OP_constu: return "OP_constu"; - case DW_OP_consts: return "OP_consts"; - case DW_OP_dup: return "OP_dup"; - case DW_OP_drop: return "OP_drop"; - case DW_OP_over: return "OP_over"; - case DW_OP_pick: return "OP_pick"; - case DW_OP_swap: return "OP_swap"; - case DW_OP_rot: return "OP_rot"; - case DW_OP_xderef: return "OP_xderef"; - case DW_OP_abs: return "OP_abs"; - case DW_OP_and: return "OP_and"; - case DW_OP_div: return "OP_div"; - case DW_OP_minus: return "OP_minus"; - case DW_OP_mod: return "OP_mod"; - case DW_OP_mul: return "OP_mul"; - case DW_OP_neg: return "OP_neg"; - case DW_OP_not: return "OP_not"; - case DW_OP_or: return "OP_or"; - case DW_OP_plus: return "OP_plus"; - case DW_OP_plus_uconst: return "OP_plus_uconst"; - case DW_OP_shl: return "OP_shl"; - case DW_OP_shr: return "OP_shr"; - case DW_OP_shra: return "OP_shra"; - case DW_OP_xor: return "OP_xor"; - case DW_OP_skip: return "OP_skip"; - case DW_OP_bra: return "OP_bra"; - case DW_OP_eq: return "OP_eq"; - case DW_OP_ge: return "OP_ge"; - case DW_OP_gt: return "OP_gt"; - case DW_OP_le: return "OP_le"; - case DW_OP_lt: return "OP_lt"; - case DW_OP_ne: return "OP_ne"; - case DW_OP_lit0: return "OP_lit0"; - case DW_OP_lit1: return "OP_lit1"; - case DW_OP_lit31: return "OP_lit31"; - case DW_OP_reg0: return "OP_reg0"; - case DW_OP_reg1: return "OP_reg1"; - case DW_OP_reg31: return "OP_reg31"; - case DW_OP_breg0: return "OP_breg0"; - case DW_OP_breg1: return "OP_breg1"; - case DW_OP_breg31: return "OP_breg31"; - case DW_OP_regx: return "OP_regx"; - case DW_OP_fbreg: return "OP_fbreg"; - case DW_OP_bregx: return "OP_bregx"; - case DW_OP_piece: return "OP_piece"; - case DW_OP_deref_size: return "OP_deref_size"; - case DW_OP_xderef_size: return "OP_xderef_size"; - case DW_OP_nop: return "OP_nop"; - case DW_OP_push_object_address: return "OP_push_object_address"; - case DW_OP_call2: return "OP_call2"; - case DW_OP_call4: return "OP_call4"; - case DW_OP_call_ref: return "OP_call_ref"; - case DW_OP_form_tls_address: return "OP_form_tls_address"; - case DW_OP_call_frame_cfa: return "OP_call_frame_cfa"; - case DW_OP_lo_user: return "OP_lo_user"; - case DW_OP_hi_user: return "OP_hi_user"; - } - assert(0 && "Unknown Dwarf Operation Encoding"); - return ""; -} - -/// AttributeEncodingString - Return the string for the specified attribute -/// encoding. -static const char *AttributeEncodingString(unsigned Encoding) { - switch(Encoding) { - case DW_ATE_address: return "ATE_address"; - case DW_ATE_boolean: return "ATE_boolean"; - case DW_ATE_complex_float: return "ATE_complex_float"; - case DW_ATE_float: return "ATE_float"; - case DW_ATE_signed: return "ATE_signed"; - case DW_ATE_signed_char: return "ATE_signed_char"; - case DW_ATE_unsigned: return "ATE_unsigned"; - case DW_ATE_unsigned_char: return "ATE_unsigned_char"; - case DW_ATE_imaginary_float: return "ATE_imaginary_float"; - case DW_ATE_packed_decimal: return "ATE_packed_decimal"; - case DW_ATE_numeric_string: return "ATE_numeric_string"; - case DW_ATE_edited: return "ATE_edited"; - case DW_ATE_signed_fixed: return "ATE_signed_fixed"; - case DW_ATE_unsigned_fixed: return "ATE_unsigned_fixed"; - case DW_ATE_decimal_float: return "ATE_decimal_float"; - case DW_ATE_lo_user: return "ATE_lo_user"; - case DW_ATE_hi_user: return "ATE_hi_user"; - } - assert(0 && "Unknown Dwarf Attribute Encoding"); - return ""; -} - -/// DecimalSignString - Return the string for the specified decimal sign -/// attribute. -static const char *DecimalSignString(unsigned Sign) { - switch(Sign) { - case DW_DS_unsigned: return "DS_unsigned"; - case DW_DS_leading_overpunch: return "DS_leading_overpunch"; - case DW_DS_trailing_overpunch: return "DS_trailing_overpunch"; - case DW_DS_leading_separate: return "DS_leading_separate"; - case DW_DS_trailing_separate: return "DS_trailing_separate"; +//===----------------------------------------------------------------------===// +// DIEAbbrev - Dwarf abbreviation, describes the organization of a debug +// information object. +class DIEAbbrev { +private: + unsigned Tag; // Dwarf tag code. + unsigned ChildrenFlag; // Dwarf children flag. + std::vector<DIEAbbrevData> Data; // Raw data bytes for abbreviation. + +public: + + DIEAbbrev(unsigned T, unsigned C) + : Tag(T) + , ChildrenFlag(C) + , Data() + {} + ~DIEAbbrev() {} + + // Accessors + unsigned getTag() const { return Tag; } + unsigned getChildrenFlag() const { return ChildrenFlag; } + const std::vector<DIEAbbrevData> &getData() const { return Data; } + void setChildrenFlag(unsigned CF) { ChildrenFlag = CF; } + + /// operator== - Used by UniqueVector to locate entry. + /// + bool operator==(const DIEAbbrev &DA) const; + + /// operator< - Used by UniqueVector to locate entry. + /// + bool operator<(const DIEAbbrev &DA) const; + + /// AddAttribute - Adds another set of attribute information to the + /// abbreviation. + void AddAttribute(unsigned Attribute, unsigned Form) { + Data.push_back(DIEAbbrevData(Attribute, Form)); } - assert(0 && "Unknown Dwarf Decimal Sign Attribute"); - return ""; -} + + /// Emit - Print the abbreviation using the specified Dwarf writer. + /// + void Emit(const DwarfWriter &DW) const; + +#ifndef NDEBUG + void print(std::ostream &O); + void dump(); +#endif +}; -/// EndianityString - Return the string for the specified endianity. -/// -static const char *EndianityString(unsigned Endian) { - switch(Endian) { - case DW_END_default: return "END_default"; - case DW_END_big: return "END_big"; - case DW_END_little: return "END_little"; - case DW_END_lo_user: return "END_lo_user"; - case DW_END_hi_user: return "END_hi_user"; - } - assert(0 && "Unknown Dwarf Endianity"); - return ""; -} +//===----------------------------------------------------------------------===// +// DIEValue - A debug information entry value. +// +class DIEValue { +public: + enum { + isInteger, + isString, + isLabel, + isAsIsLabel, + isDelta, + isEntry + }; + + unsigned Type; // Type of the value + + DIEValue(unsigned T) : Type(T) {} + virtual ~DIEValue() {} + + // Implement isa/cast/dyncast. + static bool classof(const DIEValue *) { return true; } + + /// EmitValue - Emit value via the Dwarf writer. + /// + virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const = 0; + + /// SizeOf - Return the size of a value in bytes. + /// + virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const = 0; +}; -/// AccessibilityString - Return the string for the specified accessibility. -/// -static const char *AccessibilityString(unsigned Access) { - switch(Access) { - // Accessibility codes - case DW_ACCESS_public: return "ACCESS_public"; - case DW_ACCESS_protected: return "ACCESS_protected"; - case DW_ACCESS_private: return "ACCESS_private"; - } - assert(0 && "Unknown Dwarf Accessibility"); - return ""; -} +//===----------------------------------------------------------------------===// +// DWInteger - An integer value DIE. +// +class DIEInteger : public DIEValue { +private: + uint64_t Integer; + +public: + DIEInteger(uint64_t I) : DIEValue(isInteger), Integer(I) {} -/// VisibilityString - Return the string for the specified visibility. -/// -static const char *VisibilityString(unsigned Visibility) { - switch(Visibility) { - case DW_VIS_local: return "VIS_local"; - case DW_VIS_exported: return "VIS_exported"; - case DW_VIS_qualified: return "VIS_qualified"; - } - assert(0 && "Unknown Dwarf Visibility"); - return ""; -} + // Implement isa/cast/dyncast. + static bool classof(const DIEInteger *) { return true; } + static bool classof(const DIEValue *I) { return I->Type == isInteger; } + + /// EmitValue - Emit integer of appropriate size. + /// + virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const; + + /// SizeOf - Determine size of integer value in bytes. + /// + virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const; +}; -/// VirtualityString - Return the string for the specified virtuality. -/// -static const char *VirtualityString(unsigned Virtuality) { - switch(Virtuality) { - case DW_VIRTUALITY_none: return "VIRTUALITY_none"; - case DW_VIRTUALITY_virtual: return "VIRTUALITY_virtual"; - case DW_VIRTUALITY_pure_virtual: return "VIRTUALITY_pure_virtual"; - } - assert(0 && "Unknown Dwarf Virtuality"); - return ""; -} +//===----------------------------------------------------------------------===// +// DIEString - A string value DIE. +// +struct DIEString : public DIEValue { + const std::string String; + + DIEString(const std::string &S) : DIEValue(isString), String(S) {} -/// LanguageString - Return the string for the specified language. -/// -static const char *LanguageString(unsigned Language) { - switch(Language) { - case DW_LANG_C89: return "LANG_C89"; - case DW_LANG_C: return "LANG_C"; - case DW_LANG_Ada83: return "LANG_Ada83"; - case DW_LANG_C_plus_plus: return "LANG_C_plus_plus"; - case DW_LANG_Cobol74: return "LANG_Cobol74"; - case DW_LANG_Cobol85: return "LANG_Cobol85"; - case DW_LANG_Fortran77: return "LANG_Fortran77"; - case DW_LANG_Fortran90: return "LANG_Fortran90"; - case DW_LANG_Pascal83: return "LANG_Pascal83"; - case DW_LANG_Modula2: return "LANG_Modula2"; - case DW_LANG_Java: return "LANG_Java"; - case DW_LANG_C99: return "LANG_C99"; - case DW_LANG_Ada95: return "LANG_Ada95"; - case DW_LANG_Fortran95: return "LANG_Fortran95"; - case DW_LANG_PLI: return "LANG_PLI"; - case DW_LANG_ObjC: return "LANG_ObjC"; - case DW_LANG_ObjC_plus_plus: return "LANG_ObjC_plus_plus"; - case DW_LANG_UPC: return "LANG_UPC"; - case DW_LANG_D: return "LANG_D"; - case DW_LANG_lo_user: return "LANG_lo_user"; - case DW_LANG_hi_user: return "LANG_hi_user"; - } - assert(0 && "Unknown Dwarf Language"); - return ""; -} + // Implement isa/cast/dyncast. + static bool classof(const DIEString *) { return true; } + static bool classof(const DIEValue *S) { return S->Type == isString; } + + /// EmitValue - Emit string value. + /// + virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const; + + /// SizeOf - Determine size of string value in bytes. + /// + virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const; +}; -/// CaseString - Return the string for the specified identifier case. -/// -static const char *CaseString(unsigned Case) { - switch(Case) { - case DW_ID_case_sensitive: return "ID_case_sensitive"; - case DW_ID_up_case: return "ID_up_case"; - case DW_ID_down_case: return "ID_down_case"; - case DW_ID_case_insensitive: return "ID_case_insensitive"; - } - assert(0 && "Unknown Dwarf Identifier Case"); - return ""; -} +//===----------------------------------------------------------------------===// +// DIEDwarfLabel - A Dwarf internal label expression DIE. +// +struct DIEDwarfLabel : public DIEValue { + const DWLabel Label; + + DIEDwarfLabel(const DWLabel &L) : DIEValue(isLabel), Label(L) {} -/// ConventionString - Return the string for the specified calling convention. -/// -static const char *ConventionString(unsigned Convention) { - switch(Convention) { - case DW_CC_normal: return "CC_normal"; - case DW_CC_program: return "CC_program"; - case DW_CC_nocall: return "CC_nocall"; - case DW_CC_lo_user: return "CC_lo_user"; - case DW_CC_hi_user: return "CC_hi_user"; - } - assert(0 && "Unknown Dwarf Calling Convention"); - return ""; -} + // Implement isa/cast/dyncast. + static bool classof(const DIEDwarfLabel *) { return true; } + static bool classof(const DIEValue *L) { return L->Type == isLabel; } + + /// EmitValue - Emit label value. + /// + virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const; + + /// SizeOf - Determine size of label value in bytes. + /// + virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const; +}; -/// InlineCodeString - Return the string for the specified inline code. -/// -static const char *InlineCodeString(unsigned Code) { - switch(Code) { - case DW_INL_not_inlined: return "INL_not_inlined"; - case DW_INL_inlined: return "INL_inlined"; - case DW_INL_declared_not_inlined: return "INL_declared_not_inlined"; - case DW_INL_declared_inlined: return "INL_declared_inlined"; - } - assert(0 && "Unknown Dwarf Inline Code"); - return ""; -} -/// ArrayOrderString - Return the string for the specified array order. -/// -static const char *ArrayOrderString(unsigned Order) { - switch(Order) { - case DW_ORD_row_major: return "ORD_row_major"; - case DW_ORD_col_major: return "ORD_col_major"; - } - assert(0 && "Unknown Dwarf Array Order"); - return ""; -} +//===----------------------------------------------------------------------===// +// DIEObjectLabel - A label to an object in code or data. +// +struct DIEObjectLabel : public DIEValue { + const std::string Label; + + DIEObjectLabel(const std::string &L) : DIEValue(isAsIsLabel), Label(L) {} -/// DiscriminantString - Return the string for the specified discriminant -/// descriptor. -static const char *DiscriminantString(unsigned Discriminant) { - switch(Discriminant) { - case DW_DSC_label: return "DSC_label"; - case DW_DSC_range: return "DSC_range"; - } - assert(0 && "Unknown Dwarf Discriminant Descriptor"); - return ""; -} + // Implement isa/cast/dyncast. + static bool classof(const DIEObjectLabel *) { return true; } + static bool classof(const DIEValue *L) { return L->Type == isAsIsLabel; } + + /// EmitValue - Emit label value. + /// + virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const; + + /// SizeOf - Determine size of label value in bytes. + /// + virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const; +}; -/// LNStandardString - Return the string for the specified line number standard. -/// -static const char *LNStandardString(unsigned Standard) { - switch(Standard) { - case DW_LNS_copy: return "LNS_copy"; - case DW_LNS_advance_pc: return "LNS_advance_pc"; - case DW_LNS_advance_line: return "LNS_advance_line"; - case DW_LNS_set_file: return "LNS_set_file"; - case DW_LNS_set_column: return "LNS_set_column"; - case DW_LNS_negate_stmt: return "LNS_negate_stmt"; - case DW_LNS_set_basic_block: return "LNS_set_basic_block"; - case DW_LNS_const_add_pc: return "LNS_const_add_pc"; - case DW_LNS_fixed_advance_pc: return "LNS_fixed_advance_pc"; - case DW_LNS_set_prologue_end: return "LNS_set_prologue_end"; - case DW_LNS_set_epilogue_begin: return "LNS_set_epilogue_begin"; - case DW_LNS_set_isa: return "LNS_set_isa"; - } - assert(0 && "Unknown Dwarf Line Number Standard"); - return ""; -} - -/// LNExtendedString - Return the string for the specified line number extended -/// opcode encodings. -static const char *LNExtendedString(unsigned Encoding) { - switch(Encoding) { - // Line Number Extended Opcode Encodings - case DW_LNE_end_sequence: return "LNE_end_sequence"; - case DW_LNE_set_address: return "LNE_set_address"; - case DW_LNE_define_file: return "LNE_define_file"; - case DW_LNE_lo_user: return "LNE_lo_user"; - case DW_LNE_hi_user: return "LNE_hi_user"; - } - assert(0 && "Unknown Dwarf Line Number Extended Opcode Encoding"); - return ""; -} +//===----------------------------------------------------------------------===// +// DIEDelta - A simple label difference DIE. +// +struct DIEDelta : public DIEValue { + const DWLabel LabelHi; + const DWLabel LabelLo; + + DIEDelta(const DWLabel &Hi, const DWLabel &Lo) + : DIEValue(isDelta), LabelHi(Hi), LabelLo(Lo) {} -/// MacinfoString - Return the string for the specified macinfo type encodings. -/// -static const char *MacinfoString(unsigned Encoding) { - switch(Encoding) { - // Macinfo Type Encodings - case DW_MACINFO_define: return "MACINFO_define"; - case DW_MACINFO_undef: return "MACINFO_undef"; - case DW_MACINFO_start_file: return "MACINFO_start_file"; - case DW_MACINFO_end_file: return "MACINFO_end_file"; - case DW_MACINFO_vendor_ext: return "MACINFO_vendor_ext"; - } - assert(0 && "Unknown Dwarf Macinfo Type Encodings"); - return ""; -} - -/// CallFrameString - Return the string for the specified call frame instruction -/// encodings. -static const char *CallFrameString(unsigned Encoding) { - switch(Encoding) { - case DW_CFA_advance_loc: return "CFA_advance_loc"; - case DW_CFA_offset: return "CFA_offset"; - case DW_CFA_restore: return "CFA_restore"; - case DW_CFA_set_loc: return "CFA_set_loc"; - case DW_CFA_advance_loc1: return "CFA_advance_loc1"; - case DW_CFA_advance_loc2: return "CFA_advance_loc2"; - case DW_CFA_advance_loc4: return "CFA_advance_loc4"; - case DW_CFA_offset_extended: return "CFA_offset_extended"; - case DW_CFA_restore_extended: return "CFA_restore_extended"; - case DW_CFA_undefined: return "CFA_undefined"; - case DW_CFA_same_value: return "CFA_same_value"; - case DW_CFA_register: return "CFA_register"; - case DW_CFA_remember_state: return "CFA_remember_state"; - case DW_CFA_restore_state: return "CFA_restore_state"; - case DW_CFA_def_cfa: return "CFA_def_cfa"; - case DW_CFA_def_cfa_register: return "CFA_def_cfa_register"; - case DW_CFA_def_cfa_offset: return "CFA_def_cfa_offset"; - case DW_CFA_def_cfa_expression: return "CFA_def_cfa_expression"; - case DW_CFA_expression: return "CFA_expression"; - case DW_CFA_offset_extended_sf: return "CFA_offset_extended_sf"; - case DW_CFA_def_cfa_sf: return "CFA_def_cfa_sf"; - case DW_CFA_def_cfa_offset_sf: return "CFA_def_cfa_offset_sf"; - case DW_CFA_val_offset: return "CFA_val_offset"; - case DW_CFA_val_offset_sf: return "CFA_val_offset_sf"; - case DW_CFA_val_expression: return "CFA_val_expression"; - case DW_CFA_lo_user: return "CFA_lo_user"; - case DW_CFA_hi_user: return "CFA_hi_user"; - } - assert(0 && "Unknown Dwarf Call Frame Instruction Encodings"); - return ""; -} + // Implement isa/cast/dyncast. + static bool classof(const DIEDelta *) { return true; } + static bool classof(const DIEValue *D) { return D->Type == isDelta; } + + /// EmitValue - Emit delta value. + /// + virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const; + + /// SizeOf - Determine size of delta value in bytes. + /// + virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const; +}; + +//===----------------------------------------------------------------------===// +// DIEntry - A pointer to a debug information entry. +// +struct DIEntry : public DIEValue { + DIE *Entry; + + DIEntry(DIE *E) : DIEValue(isEntry), Entry(E) {} + + // Implement isa/cast/dyncast. + static bool classof(const DIEntry *) { return true; } + static bool classof(const DIEValue *E) { return E->Type == isEntry; } + + /// EmitValue - Emit delta value. + /// + virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const; + + /// SizeOf - Determine size of delta value in bytes. + /// + virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const; +}; + +//===----------------------------------------------------------------------===// +// DIE - A structured debug information entry. Has an abbreviation which +// describes it's organization. +class DIE { +private: + DIEAbbrev *Abbrev; // Temporary buffer for abbreviation. + unsigned AbbrevID; // Decribing abbreviation ID. + unsigned Offset; // Offset in debug info section. + unsigned Size; // Size of instance + children. + std::vector<DIE *> Children; // Children DIEs. + std::vector<DIEValue *> Values; // Attributes values. + +public: + DIE(unsigned Tag); + ~DIE(); + + // Accessors + unsigned getAbbrevID() const { return AbbrevID; } + unsigned getOffset() const { return Offset; } + unsigned getSize() const { return Size; } + const std::vector<DIE *> &getChildren() const { return Children; } + const std::vector<DIEValue *> &getValues() const { return Values; } + void setOffset(unsigned O) { Offset = O; } + void setSize(unsigned S) { Size = S; } + + /// SiblingOffset - Return the offset of the debug information entry's + /// sibling. + unsigned SiblingOffset() const { return Offset + Size; } + + /// AddUInt - Add an unsigned integer attribute data and value. + /// + void AddUInt(unsigned Attribute, unsigned Form, uint64_t Integer); + + /// AddSInt - Add an signed integer attribute data and value. + /// + void AddSInt(unsigned Attribute, unsigned Form, int64_t Integer); + + /// AddString - Add a std::string attribute data and value. + /// + void AddString(unsigned Attribute, unsigned Form, + const std::string &String); + + /// AddLabel - Add a Dwarf label attribute data and value. + /// < |