| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/developer/debug/zxdb/symbols/dwarf_tag.h" |
| |
| #include <iterator> |
| |
| #include "src/lib/fxl/strings/string_printf.h" |
| |
| namespace zxdb { |
| |
| namespace { |
| |
| // Undefined values will be null. |
| const char* kDwarfTagNames[] = { |
| "<none>", // 0x00 |
| "DW_TAG_array_type", // 0x01 |
| "DW_TAG_class_type", // 0x02 |
| "DW_TAG_entry_point", // 0x03 |
| "DW_TAG_enumeration_type", // 0x04 |
| "DW_TAG_formal_parameter", // 0x05 |
| nullptr, // 0x06 |
| nullptr, // 0x07 |
| "DW_TAG_imported_declaration", // 0x08 |
| nullptr, // 0x09 |
| "DW_TAG_label", // 0x0a |
| "DW_TAG_lexical_block", // 0x0b |
| nullptr, // 0x0c |
| "DW_TAG_member", // 0x0d |
| nullptr, // 0x0e |
| "DW_TAG_pointer_type", // 0x0f |
| "DW_TAG_reference_type", // 0x10 |
| "DW_TAG_compile_unit", // 0x11 |
| "DW_TAG_string_type", // 0x12 |
| "DW_TAG_structure_type", // 0x13 |
| nullptr, // 0x14 |
| "DW_TAG_subroutine_type", // 0x15 |
| "DW_TAG_typedef", // 0x16 |
| "DW_TAG_union_type", // 0x17 |
| "DW_TAG_unspecified_parameters", // 0x18 |
| "DW_TAG_variant", // 0x19 |
| "DW_TAG_common_block", // 0x1a |
| "DW_TAG_common_inclusion", // 0x1b |
| "DW_TAG_inheritance", // 0x1c |
| "DW_TAG_inlined_subroutine", // 0x1d |
| "DW_TAG_module", // 0x1e |
| "DW_TAG_ptr_to_member_type", // 0x1f |
| "DW_TAG_set_type", // 0x20 |
| "DW_TAG_subrange_type", // 0x21 |
| "DW_TAG_with_stmt", // 0x22 |
| "DW_TAG_access_declaration", // 0x23 |
| "DW_TAG_base_type", // 0x24 |
| "DW_TAG_catch_block", // 0x25 |
| "DW_TAG_const_type", // 0x26 |
| "DW_TAG_constant", // 0x27 |
| "DW_TAG_enumerator", // 0x28 |
| "DW_TAG_file_type", // 0x29 |
| "DW_TAG_friend", // 0x2a |
| "DW_TAG_namelist", // 0x2b |
| "DW_TAG_namelist_item", // 0x2c |
| "DW_TAG_packed_type", // 0x2d |
| "DW_TAG_subprogram", // 0x2e |
| "DW_TAG_template_type_parameter", // 0x2f |
| "DW_TAG_template_value_parameter", // 0x30 |
| "DW_TAG_thrown_type", // 0x31 |
| "DW_TAG_try_block", // 0x32 |
| "DW_TAG_variant_part", // 0x33 |
| "DW_TAG_variable", // 0x34 |
| "DW_TAG_volatile_type", // 0x35 |
| "DW_TAG_dwarf_procedure", // 0x36 |
| "DW_TAG_restrict_type", // 0x37 |
| "DW_TAG_interface_type", // 0x38 |
| "DW_TAG_namespace", // 0x39 |
| "DW_TAG_imported_module", // 0x3a |
| "DW_TAG_unspecified_type", // 0x3b |
| "DW_TAG_partial_unit", // 0x3c |
| "DW_TAG_imported_unit", // 0x3d |
| nullptr, // 0x3e |
| "DW_TAG_condition", // 0x3f |
| "DW_TAG_shared_type", // 0x40 |
| "DW_TAG_type_unit", // 0x41 |
| "DW_TAG_rvalue_reference_type", // 0x42 |
| "DW_TAG_template_alias", // 0x43 |
| "DW_TAG_coarray_type", // 0x44 |
| "DW_TAG_generic_subrange", // 0x45 |
| "DW_TAG_dynamic_type", // 0x46 |
| "DW_TAG_atomic_type", // 0x47 |
| "DW_TAG_call_site", // 0x48 |
| "DW_TAG_call_site_parameter", // 0x49 |
| "DW_TAG_skeleton_unit", // 0x4a |
| "DW_TAG_immutable_type", // 0x4b |
| }; |
| |
| constexpr size_t kDwarfTagNameCount = static_cast<size_t>(DwarfTag::kLastDefined); |
| static_assert(std::size(kDwarfTagNames) == kDwarfTagNameCount, |
| "Update DWARF tag name array for changes to enum."); |
| |
| } // namespace |
| |
| bool DwarfTagIsType(DwarfTag tag) { |
| return DwarfTagIsTypeModifier(tag) || tag == DwarfTag::kArrayType || tag == DwarfTag::kBaseType || |
| tag == DwarfTag::kClassType || tag == DwarfTag::kEnumerationType || |
| tag == DwarfTag::kPtrToMemberType || tag == DwarfTag::kStringType || |
| tag == DwarfTag::kStructureType || tag == DwarfTag::kSubroutineType || |
| tag == DwarfTag::kUnionType || tag == DwarfTag::kUnspecifiedType; |
| |
| // Types in languages we ignore for now: |
| // kInterfaceType |
| // kSetType |
| // kSharedType |
| // kPackedType |
| // kFileType |
| } |
| |
| bool DwarfTagIsTypeModifier(DwarfTag tag) { |
| return tag == DwarfTag::kConstType || tag == DwarfTag::kPointerType || |
| tag == DwarfTag::kReferenceType || tag == DwarfTag::kRestrictType || |
| tag == DwarfTag::kRvalueReferenceType || tag == DwarfTag::kTypedef || |
| tag == DwarfTag::kVolatileType || tag == DwarfTag::kImportedDeclaration || |
| tag == DwarfTag::kAtomicType; |
| } |
| |
| bool DwarfTagIsCVQualifier(DwarfTag tag) { |
| return tag == DwarfTag::kConstType || tag == DwarfTag::kVolatileType || |
| tag == DwarfTag::kRestrictType || tag == DwarfTag::kAtomicType; |
| } |
| |
| bool DwarfTagIsEitherReference(DwarfTag tag) { |
| return tag == DwarfTag::kReferenceType || tag == DwarfTag::kRvalueReferenceType; |
| } |
| |
| bool DwarfTagIsPointerOrReference(DwarfTag tag) { |
| return DwarfTagIsEitherReference(tag) || tag == DwarfTag::kPointerType; |
| } |
| |
| std::string DwarfTagToString(DwarfTag tag, bool include_number) { |
| unsigned int_tag = static_cast<unsigned>(tag); |
| if (int_tag < kDwarfTagNameCount && kDwarfTagNames[int_tag]) { |
| if (include_number) |
| return fxl::StringPrintf("%s (0x%02x)", kDwarfTagNames[int_tag], int_tag); |
| return kDwarfTagNames[int_tag]; |
| } |
| return fxl::StringPrintf("<undefined (0x%x)>", static_cast<unsigned>(int_tag)); |
| } |
| |
| } // namespace zxdb |
