1//===-- DWARFUnitTest.cpp -------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "Plugins/SymbolFile/DWARF/DWARFUnit.h"
10#include "TestingSupport/Symbol/YAMLModuleTester.h"
11#include "gmock/gmock.h"
12#include "gtest/gtest.h"
13
14using namespace lldb;
15using namespace lldb_private;
16using namespace lldb_private::plugin::dwarf;
17
18TEST(DWARFUnitTest, NullUnitDie) {
19 // Make sure we don't crash parsing a null unit DIE.
20 const char *yamldata = R"(
21--- !ELF
22FileHeader:
23 Class: ELFCLASS64
24 Data: ELFDATA2LSB
25 Type: ET_EXEC
26 Machine: EM_386
27DWARF:
28 debug_abbrev:
29 - Table:
30 - Code: 0x00000001
31 Tag: DW_TAG_compile_unit
32 Children: DW_CHILDREN_yes
33 Attributes:
34 - Attribute: DW_AT_language
35 Form: DW_FORM_data2
36 debug_info:
37 - Version: 4
38 AddrSize: 8
39 Entries:
40 - AbbrCode: 0x00000000
41)";
42
43 YAMLModuleTester t(yamldata);
44 ASSERT_TRUE((bool)t.GetDwarfUnit());
45
46 DWARFUnit *unit = t.GetDwarfUnit();
47 const DWARFDebugInfoEntry *die_first = unit->DIE().GetDIE();
48 ASSERT_NE(die_first, nullptr);
49 EXPECT_TRUE(die_first->IsNULL());
50}
51
52TEST(DWARFUnitTest, MissingSentinel) {
53 // Make sure we don't crash if the debug info is missing a null DIE sentinel.
54 const char *yamldata = R"(
55--- !ELF
56FileHeader:
57 Class: ELFCLASS64
58 Data: ELFDATA2LSB
59 Type: ET_EXEC
60 Machine: EM_386
61DWARF:
62 debug_abbrev:
63 - Table:
64 - Code: 0x00000001
65 Tag: DW_TAG_compile_unit
66 Children: DW_CHILDREN_yes
67 Attributes:
68 - Attribute: DW_AT_language
69 Form: DW_FORM_data2
70 debug_info:
71 - Version: 4
72 AddrSize: 8
73 Entries:
74 - AbbrCode: 0x00000001
75 Values:
76 - Value: 0x000000000000000C
77)";
78
79 YAMLModuleTester t(yamldata);
80 ASSERT_TRUE((bool)t.GetDwarfUnit());
81
82 DWARFUnit *unit = t.GetDwarfUnit();
83 const DWARFDebugInfoEntry *die_first = unit->DIE().GetDIE();
84 ASSERT_NE(die_first, nullptr);
85 EXPECT_EQ(die_first->GetFirstChild(), nullptr);
86 EXPECT_EQ(die_first->GetSibling(), nullptr);
87}
88
89TEST(DWARFUnitTest, ClangProducer) {
90 const char *yamldata = R"(
91--- !ELF
92FileHeader:
93 Class: ELFCLASS64
94 Data: ELFDATA2LSB
95 Type: ET_EXEC
96 Machine: EM_386
97DWARF:
98 debug_str:
99 - 'Apple clang version 13.0.0 (clang-1300.0.29.3)'
100 debug_abbrev:
101 - Table:
102 - Code: 0x00000001
103 Tag: DW_TAG_compile_unit
104 Children: DW_CHILDREN_yes
105 Attributes:
106 - Attribute: DW_AT_producer
107 Form: DW_FORM_strp
108 debug_info:
109 - Version: 4
110 AddrSize: 8
111 Entries:
112 - AbbrCode: 0x1
113 Values:
114 - Value: 0x0
115 - AbbrCode: 0x0
116)";
117
118 YAMLModuleTester t(yamldata);
119 DWARFUnit *unit = t.GetDwarfUnit();
120 ASSERT_TRUE((bool)unit);
121 EXPECT_EQ(unit->GetProducer(), eProducerClang);
122 EXPECT_EQ(unit->GetProducerVersion(), llvm::VersionTuple(1300, 0, 29, 3));
123}
124
125TEST(DWARFUnitTest, SwiftProducer) {
126 const char *yamldata = R"(
127--- !ELF
128FileHeader:
129 Class: ELFCLASS64
130 Data: ELFDATA2LSB
131 Type: ET_EXEC
132 Machine: EM_386
133DWARF:
134 debug_str:
135 - 'Apple Swift version 5.5 (swiftlang-1300.0.31.1 clang-1300.0.29.1)'
136 debug_abbrev:
137 - Table:
138 - Code: 0x00000001
139 Tag: DW_TAG_compile_unit
140 Children: DW_CHILDREN_yes
141 Attributes:
142 - Attribute: DW_AT_producer
143 Form: DW_FORM_strp
144 debug_info:
145 - Version: 4
146 AddrSize: 8
147 Entries:
148 - AbbrCode: 0x1
149 Values:
150 - Value: 0x0
151 - AbbrCode: 0x0
152)";
153
154 YAMLModuleTester t(yamldata);
155 DWARFUnit *unit = t.GetDwarfUnit();
156 ASSERT_TRUE((bool)unit);
157 EXPECT_EQ(unit->GetProducer(), eProducerSwift);
158 EXPECT_EQ(unit->GetProducerVersion(), llvm::VersionTuple(1300, 0, 31, 1));
159}
160

source code of lldb/unittests/SymbolFile/DWARF/DWARFUnitTest.cpp