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//===-- DWARFDIETest.cpp ----------------------------------------------=---===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "Plugins/SymbolFile/DWARF/DWARFDIE.h"
#include "Plugins/SymbolFile/DWARF/DWARFDebugInfo.h"
#include "Plugins/SymbolFile/DWARF/DWARFDeclContext.h"
#include "Plugins/SymbolFile/DWARF/DebugNamesDWARFIndex.h"
#include "TestingSupport/Symbol/YAMLModuleTester.h"
#include "llvm/ADT/STLExtras.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::plugin::dwarf;
using StringRef = llvm::StringRef;
static void
check_num_matches(DebugNamesDWARFIndex &index, int expected_num_matches,
llvm::ArrayRef<DWARFDeclContext::Entry> ctx_entries) {
DWARFDeclContext ctx(ctx_entries);
int num_matches = 0;
index.GetFullyQualifiedType(ctx, [&](DWARFDIE die) {
num_matches++;
return true;
});
ASSERT_EQ(num_matches, expected_num_matches);
}
static DWARFDeclContext::Entry make_entry(const char *c) {
return DWARFDeclContext::Entry(dwarf::DW_TAG_class_type, c);
}
TEST(DWARFDebugNamesIndexTest, FullyQualifiedQueryWithIDXParent) {
const char *yamldata = R"(
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_386
DWARF:
debug_str:
- '1'
- '2'
- '3'
debug_abbrev:
- Table:
# We intentionally don't nest types in debug_info: if the nesting is not
# inferred from debug_names, we want the test to fail.
- Code: 0x1
Tag: DW_TAG_compile_unit
Children: DW_CHILDREN_yes
- Code: 0x2
Tag: DW_TAG_class_type
Children: DW_CHILDREN_no
Attributes:
- Attribute: DW_AT_name
Form: DW_FORM_strp
debug_info:
- Version: 4
AddrSize: 8
Entries:
- AbbrCode: 0x1
- AbbrCode: 0x2
Values:
- Value: 0x0 # Name "1"
- AbbrCode: 0x2
Values:
- Value: 0x2 # Name "2"
- AbbrCode: 0x2
Values:
- Value: 0x4 # Name "3"
- AbbrCode: 0x0
debug_names:
Abbreviations:
- Code: 0x11
Tag: DW_TAG_class_type
Indices:
- Idx: DW_IDX_parent
Form: DW_FORM_flag_present
- Idx: DW_IDX_die_offset
Form: DW_FORM_ref4
- Code: 0x22
Tag: DW_TAG_class_type
Indices:
- Idx: DW_IDX_parent
Form: DW_FORM_ref4
- Idx: DW_IDX_die_offset
Form: DW_FORM_ref4
Entries:
- Name: 0x0 # strp to Name1
Code: 0x11
Values:
- 0xc # Die offset to entry named "1"
- Name: 0x2 # strp to Name2
Code: 0x22
Values:
- 0x0 # Parent = First entry ("1")
- 0x11 # Die offset to entry named "1:2"
- Name: 0x4 # strp to Name3
Code: 0x22
Values:
- 0x6 # Parent = Second entry ("1::2")
- 0x16 # Die offset to entry named "1::2::3"
- Name: 0x4 # strp to Name3
Code: 0x11
Values:
- 0x16 # Die offset to entry named "3"
)";
YAMLModuleTester t(yamldata);
auto *symbol_file =
llvm::cast<SymbolFileDWARF>(t.GetModule()->GetSymbolFile());
auto *index = static_cast<DebugNamesDWARFIndex *>(symbol_file->getIndex());
ASSERT_NE(index, nullptr);
check_num_matches(*index, 1, {make_entry("1")});
check_num_matches(*index, 1, {make_entry("2"), make_entry("1")});
check_num_matches(*index, 1,
{make_entry("3"), make_entry("2"), make_entry("1")});
check_num_matches(*index, 0, {make_entry("2")});
check_num_matches(*index, 1, {make_entry("3")});
}
TEST(DWARFDebugNamesIndexTest, FullyQualifiedQueryWithoutIDXParent) {
const char *yamldata = R"(
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_386
DWARF:
debug_str:
- '1'
- '2'
debug_abbrev:
- Table:
- Code: 0x1
Tag: DW_TAG_compile_unit
Children: DW_CHILDREN_yes
- Code: 0x2
Tag: DW_TAG_class_type
Children: DW_CHILDREN_yes
Attributes:
- Attribute: DW_AT_name
Form: DW_FORM_strp
- Code: 0x3
Tag: DW_TAG_class_type
Children: DW_CHILDREN_no
Attributes:
- Attribute: DW_AT_name
Form: DW_FORM_strp
debug_info:
- Version: 4
AddrSize: 8
Entries:
- AbbrCode: 0x1
- AbbrCode: 0x2
Values:
- Value: 0x0 # Name "1"
- AbbrCode: 0x3
Values:
- Value: 0x2 # Name "2"
- AbbrCode: 0x0
- AbbrCode: 0x3
Values:
- Value: 0x2 # Name "2"
- AbbrCode: 0x0
debug_names:
Abbreviations:
- Code: 0x1
Tag: DW_TAG_class_type
Indices:
- Idx: DW_IDX_die_offset
Form: DW_FORM_ref4
Entries:
- Name: 0x0 # strp to Name1
Code: 0x1
Values:
- 0xc # Die offset to entry named "1"
- Name: 0x2 # strp to Name2
Code: 0x1
Values:
- 0x11 # Die offset to entry named "1::2"
- Name: 0x2 # strp to Name2
Code: 0x1
Values:
- 0x17 # Die offset to entry named "2"
)";
YAMLModuleTester t(yamldata);
auto *symbol_file =
llvm::cast<SymbolFileDWARF>(t.GetModule()->GetSymbolFile());
auto *index = static_cast<DebugNamesDWARFIndex *>(symbol_file->getIndex());
ASSERT_NE(index, nullptr);
check_num_matches(*index, 1, {make_entry("1")});
check_num_matches(*index, 1, {make_entry("2"), make_entry("1")});
check_num_matches(*index, 1, {make_entry("2")});
}
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