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Side by Side Diff: courgette/disassembler_elf_32.h

Issue 1969543002: Unified usage of vector<unique_ptr<T>> (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Format Created 4 years, 7 months ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved. 1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef COURGETTE_DISASSEMBLER_ELF_32_H_ 5 #ifndef COURGETTE_DISASSEMBLER_ELF_32_H_
6 #define COURGETTE_DISASSEMBLER_ELF_32_H_ 6 #define COURGETTE_DISASSEMBLER_ELF_32_H_
7 7
8 #include <stddef.h> 8 #include <stddef.h>
9 #include <stdint.h> 9 #include <stdint.h>
10 10
11 #include <memory>
11 #include <vector> 12 #include <vector>
12 13
13 #include "base/macros.h" 14 #include "base/macros.h"
14 #include "base/memory/scoped_vector.h"
15 #include "courgette/disassembler.h" 15 #include "courgette/disassembler.h"
16 #include "courgette/image_utils.h" 16 #include "courgette/image_utils.h"
17 #include "courgette/memory_allocator.h" 17 #include "courgette/memory_allocator.h"
18 #include "courgette/types_elf.h" 18 #include "courgette/types_elf.h"
19 19
20 namespace courgette { 20 namespace courgette {
21 21
22 class AssemblyProgram; 22 class AssemblyProgram;
23 23
24 // A Courgette disassembler for 32-bit ELF files. This is only a partial 24 // A Courgette disassembler for 32-bit ELF files. This is only a partial
(...skipping 14 matching lines...) Expand all
39 39
40 virtual ~TypedRVA() { } 40 virtual ~TypedRVA() { }
41 41
42 RVA rva() const { return rva_; } 42 RVA rva() const { return rva_; }
43 RVA relative_target() const { return relative_target_; } 43 RVA relative_target() const { return relative_target_; }
44 FileOffset file_offset() const { return file_offset_; } 44 FileOffset file_offset() const { return file_offset_; }
45 45
46 void set_relative_target(RVA relative_target) { 46 void set_relative_target(RVA relative_target) {
47 relative_target_ = relative_target; 47 relative_target_ = relative_target;
48 } 48 }
49 void set_file_offset(FileOffset file_offset) { 49 void set_file_offset(FileOffset file_offset) { file_offset_ = file_offset; }
50 file_offset_ = file_offset;
51 }
52 50
53 // Computes the relative jump's offset from the op in p. 51 // Computes the relative jump's offset from the op in p.
54 virtual CheckBool ComputeRelativeTarget(const uint8_t* op_pointer) = 0; 52 virtual CheckBool ComputeRelativeTarget(const uint8_t* op_pointer) = 0;
55 53
56 // Emits the courgette instruction corresponding to the RVA type. 54 // Emits the courgette instruction corresponding to the RVA type.
57 virtual CheckBool EmitInstruction(AssemblyProgram* program, 55 virtual CheckBool EmitInstruction(AssemblyProgram* program,
58 RVA target_rva) = 0; 56 RVA target_rva) = 0;
59 57
60 // Returns the size of the instruction containing the RVA. 58 // Returns the size of the instruction containing the RVA.
61 virtual uint16_t op_size() const = 0; 59 virtual uint16_t op_size() const = 0;
62 60
63 // Comparator for sorting, which assumes uniqueness of RVAs. 61 // Comparator for sorting, which assumes uniqueness of RVAs.
64 static bool IsLessThanByRVA(TypedRVA* a, TypedRVA* b) { 62 static bool IsLessThanByRVA(const std::unique_ptr<TypedRVA>& a,
63 const std::unique_ptr<TypedRVA>& b) {
65 return a->rva() < b->rva(); 64 return a->rva() < b->rva();
66 } 65 }
67 66
68 // Comparator for sorting, which assumes uniqueness of file offsets. 67 // Comparator for sorting, which assumes uniqueness of file offsets.
69 static bool IsLessThanByFileOffset(TypedRVA* a, TypedRVA* b) { 68 static bool IsLessThanByFileOffset(const std::unique_ptr<TypedRVA>& a,
69 const std::unique_ptr<TypedRVA>& b) {
70 return a->file_offset() < b->file_offset(); 70 return a->file_offset() < b->file_offset();
71 } 71 }
72 72
73 private: 73 private:
74 const RVA rva_; 74 const RVA rva_;
75 RVA relative_target_ = kNoRVA; 75 RVA relative_target_ = kNoRVA;
76 FileOffset file_offset_ = kNoFileOffset; 76 FileOffset file_offset_ = kNoFileOffset;
77 }; 77 };
78 78
79 public: 79 public:
80 DisassemblerElf32(const void* start, size_t length); 80 DisassemblerElf32(const void* start, size_t length);
81 81
82 ~DisassemblerElf32() override { } 82 ~DisassemblerElf32() override { }
83 83
84 // Disassembler interfaces. 84 // Disassembler interfaces.
85 RVA FileOffsetToRVA(FileOffset file_offset) const override; 85 RVA FileOffsetToRVA(FileOffset file_offset) const override;
86 FileOffset RVAToFileOffset(RVA rva) const override; 86 FileOffset RVAToFileOffset(RVA rva) const override;
87 RVA PointerToTargetRVA(const uint8_t* p) const override; 87 RVA PointerToTargetRVA(const uint8_t* p) const override;
88 virtual ExecutableType kind() const override = 0; 88 virtual ExecutableType kind() const override = 0;
89 bool ParseHeader() override; 89 bool ParseHeader() override;
90 bool Disassemble(AssemblyProgram* target) override; 90 bool Disassemble(AssemblyProgram* target) override;
91 91
92 virtual e_machine_values ElfEM() const = 0; 92 virtual e_machine_values ElfEM() const = 0;
93 93
94 // Public for unittests only 94 // Public for unittests only
95 std::vector<RVA> &Abs32Locations() { return abs32_locations_; } 95 std::vector<RVA>& Abs32Locations() { return abs32_locations_; }
96 ScopedVector<TypedRVA> &Rel32Locations() { return rel32_locations_; } 96 std::vector<std::unique_ptr<TypedRVA>>& Rel32Locations() {
97 return rel32_locations_;
98 }
97 99
98 protected: 100 protected:
99 bool UpdateLength(); 101 bool UpdateLength();
100 102
101 // Misc Section Helpers 103 // Misc Section Helpers
102 104
103 Elf32_Half SectionHeaderCount() const { 105 Elf32_Half SectionHeaderCount() const {
104 return section_header_table_size_; 106 return section_header_table_size_;
105 } 107 }
106 108
(...skipping 25 matching lines...) Expand all
132 134
133 CheckBool IsValidTargetRVA(RVA rva) const WARN_UNUSED_RESULT; 135 CheckBool IsValidTargetRVA(RVA rva) const WARN_UNUSED_RESULT;
134 136
135 // Converts an ELF relocation instruction into an RVA. 137 // Converts an ELF relocation instruction into an RVA.
136 virtual CheckBool RelToRVA(Elf32_Rel rel, RVA* result) 138 virtual CheckBool RelToRVA(Elf32_Rel rel, RVA* result)
137 const WARN_UNUSED_RESULT = 0; 139 const WARN_UNUSED_RESULT = 0;
138 140
139 CheckBool RVAsToFileOffsets(const std::vector<RVA>& rvas, 141 CheckBool RVAsToFileOffsets(const std::vector<RVA>& rvas,
140 std::vector<FileOffset>* file_offsets); 142 std::vector<FileOffset>* file_offsets);
141 143
142 CheckBool RVAsToFileOffsets(ScopedVector<TypedRVA>* typed_rvas); 144 CheckBool RVAsToFileOffsets(
145 std::vector<std::unique_ptr<TypedRVA>>* typed_rvas);
143 146
144 // Parsing code for Disassemble(). 147 // Parsing code for Disassemble().
145 148
146 virtual CheckBool ParseRelocationSection(const Elf32_Shdr* section_header, 149 virtual CheckBool ParseRelocationSection(const Elf32_Shdr* section_header,
147 AssemblyProgram* program) 150 AssemblyProgram* program)
148 WARN_UNUSED_RESULT = 0; 151 WARN_UNUSED_RESULT = 0;
149 152
150 virtual CheckBool ParseRel32RelocsFromSection(const Elf32_Shdr* section) 153 virtual CheckBool ParseRel32RelocsFromSection(const Elf32_Shdr* section)
151 WARN_UNUSED_RESULT = 0; 154 WARN_UNUSED_RESULT = 0;
152 155
153 CheckBool ParseFile(AssemblyProgram* target) WARN_UNUSED_RESULT; 156 CheckBool ParseFile(AssemblyProgram* target) WARN_UNUSED_RESULT;
154 157
155 CheckBool ParseProgbitsSection( 158 CheckBool ParseProgbitsSection(
156 const Elf32_Shdr* section_header, 159 const Elf32_Shdr* section_header,
157 std::vector<FileOffset>::iterator* current_abs_offset, 160 std::vector<FileOffset>::iterator* current_abs_offset,
158 std::vector<FileOffset>::iterator end_abs_offset, 161 std::vector<FileOffset>::iterator end_abs_offset,
159 ScopedVector<TypedRVA>::iterator* current_rel, 162 std::vector<std::unique_ptr<TypedRVA>>::iterator* current_rel,
160 ScopedVector<TypedRVA>::iterator end_rel, 163 std::vector<std::unique_ptr<TypedRVA>>::iterator end_rel,
161 AssemblyProgram* program) WARN_UNUSED_RESULT; 164 AssemblyProgram* program) WARN_UNUSED_RESULT;
162 165
163 CheckBool ParseSimpleRegion(FileOffset start_file_offset, 166 CheckBool ParseSimpleRegion(FileOffset start_file_offset,
164 FileOffset end_file_offset, 167 FileOffset end_file_offset,
165 AssemblyProgram* program) WARN_UNUSED_RESULT; 168 AssemblyProgram* program) WARN_UNUSED_RESULT;
166 169
167 CheckBool ParseAbs32Relocs() WARN_UNUSED_RESULT; 170 CheckBool ParseAbs32Relocs() WARN_UNUSED_RESULT;
168 171
169 CheckBool CheckSection(RVA rva) WARN_UNUSED_RESULT; 172 CheckBool CheckSection(RVA rva) WARN_UNUSED_RESULT;
170 173
(...skipping 11 matching lines...) Expand all
182 std::vector<Elf32_Half> section_header_file_offset_order_; 185 std::vector<Elf32_Half> section_header_file_offset_order_;
183 186
184 const Elf32_Phdr* program_header_table_; 187 const Elf32_Phdr* program_header_table_;
185 Elf32_Half program_header_table_size_; 188 Elf32_Half program_header_table_size_;
186 189
187 // Pointer to string table containing section names. 190 // Pointer to string table containing section names.
188 const char* default_string_section_; 191 const char* default_string_section_;
189 size_t default_string_section_size_; 192 size_t default_string_section_size_;
190 193
191 std::vector<RVA> abs32_locations_; 194 std::vector<RVA> abs32_locations_;
192 ScopedVector<TypedRVA> rel32_locations_; 195 std::vector<std::unique_ptr<TypedRVA>> rel32_locations_;
193 196
194 DISALLOW_COPY_AND_ASSIGN(DisassemblerElf32); 197 DISALLOW_COPY_AND_ASSIGN(DisassemblerElf32);
195 }; 198 };
196 199
197 } // namespace courgette 200 } // namespace courgette
198 201
199 #endif // COURGETTE_DISASSEMBLER_ELF_32_H_ 202 #endif // COURGETTE_DISASSEMBLER_ELF_32_H_
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