1 //===-- SymbolTest.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 "lldb/Symbol/Symbol.h"
10 #include "lldb/Core/DataFileCache.h"
11 #include "lldb/Core/Section.h"
12 #include "lldb/Utility/DataEncoder.h"
13 #include "lldb/Utility/DataExtractor.h"
14
15 #include "gtest/gtest.h"
16
17 using namespace lldb;
18 using namespace lldb_private;
19
EncodeDecode(const Symbol & object,const SectionList * sect_list,ByteOrder byte_order)20 static void EncodeDecode(const Symbol &object, const SectionList *sect_list,
21 ByteOrder byte_order) {
22 const uint8_t addr_size = 8;
23 DataEncoder file(byte_order, addr_size);
24 DataEncoder strtab_encoder(byte_order, addr_size);
25 ConstStringTable const_strtab;
26 object.Encode(file, const_strtab);
27 llvm::ArrayRef<uint8_t> bytes = file.GetData();
28 DataExtractor data(bytes.data(), bytes.size(), byte_order, addr_size);
29
30 const_strtab.Encode(strtab_encoder);
31 llvm::ArrayRef<uint8_t> strtab_bytes = strtab_encoder.GetData();
32 DataExtractor strtab_data(strtab_bytes.data(), strtab_bytes.size(),
33 byte_order, addr_size);
34 StringTableReader strtab_reader;
35 offset_t strtab_data_offset = 0;
36 ASSERT_EQ(strtab_reader.Decode(strtab_data, &strtab_data_offset), true);
37
38 Symbol decoded_object;
39 offset_t data_offset = 0;
40 decoded_object.Decode(data, &data_offset, sect_list, strtab_reader);
41 EXPECT_EQ(object, decoded_object);
42 }
43
EncodeDecode(const Symbol & object,const SectionList * sect_list)44 static void EncodeDecode(const Symbol &object, const SectionList *sect_list) {
45 EncodeDecode(object, sect_list, eByteOrderLittle);
46 EncodeDecode(object, sect_list, eByteOrderBig);
47 }
48
TEST(SymbolTest,EncodeDecodeSymbol)49 TEST(SymbolTest, EncodeDecodeSymbol) {
50
51 SectionSP sect_sp(new Section(
52 /*module_sp=*/ModuleSP(),
53 /*obj_file=*/nullptr,
54 /*sect_id=*/1,
55 /*name=*/ConstString(".text"),
56 /*sect_type=*/eSectionTypeCode,
57 /*file_vm_addr=*/0x1000,
58 /*vm_size=*/0x1000,
59 /*file_offset=*/0,
60 /*file_size=*/0,
61 /*log2align=*/5,
62 /*flags=*/0x10203040));
63
64 SectionList sect_list;
65 sect_list.AddSection(sect_sp);
66
67 Symbol symbol(
68 /*symID=*/0x10203040,
69 /*name=*/"main",
70 /*type=*/eSymbolTypeCode,
71 /*bool external=*/false,
72 /*bool is_debug=*/false,
73 /*bool is_trampoline=*/false,
74 /*bool is_artificial=*/false,
75 /*section_sp=*/sect_sp,
76 /*offset=*/0x0,
77 /*size=*/0x100,
78 /*size_is_valid=*/true,
79 /*contains_linker_annotations=*/false,
80 /*flags=*/0x11223344);
81
82 // Test encoding a symbol with an address.
83 EncodeDecode(symbol, §_list);
84
85 // Test that encoding the bits in the bitfield works for all endianness
86 // combos.
87
88 // Test Symbol.m_is_synthetic
89 symbol.SetIsSynthetic(true);
90 EncodeDecode(symbol, §_list);
91 symbol.SetIsSynthetic(false);
92
93 // Test Symbol.m_is_debug
94 symbol.SetDebug(true);
95 EncodeDecode(symbol, §_list);
96 symbol.SetDebug(false);
97
98 // Test Symbol.m_is_external
99 symbol.SetExternal(true);
100 EncodeDecode(symbol, §_list);
101 symbol.SetExternal(false);
102
103 // Test Symbol.m_size_is_sibling
104 symbol.SetSizeIsSibling(true);
105 EncodeDecode(symbol, §_list);
106 symbol.SetSizeIsSibling(false);
107
108 // Test Symbol.m_size_is_synthesized
109 symbol.SetSizeIsSynthesized(true);
110 EncodeDecode(symbol, §_list);
111 symbol.SetSizeIsSynthesized(false);
112
113 // Test Symbol.m_size_is_synthesized
114 symbol.SetByteSize(0);
115 EncodeDecode(symbol, §_list);
116 symbol.SetByteSize(0x100);
117
118 // Test Symbol.m_demangled_is_synthesized
119 symbol.SetDemangledNameIsSynthesized(true);
120 EncodeDecode(symbol, §_list);
121 symbol.SetDemangledNameIsSynthesized(false);
122
123 // Test Symbol.m_contains_linker_annotations
124 symbol.SetContainsLinkerAnnotations(true);
125 EncodeDecode(symbol, §_list);
126 symbol.SetContainsLinkerAnnotations(false);
127
128 // Test Symbol.m_is_weak
129 symbol.SetIsWeak(true);
130 EncodeDecode(symbol, §_list);
131 symbol.SetIsWeak(false);
132
133 // Test encoding a symbol with no address.
134 symbol.GetAddressRef().SetSection(SectionSP());
135 EncodeDecode(symbol, §_list);
136 }
137