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Side by Side Diff: courgette/disassembler_elf_32.h

Issue 15908002: Differential updates for components. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: Sync to LKGR revision 207804. Created 7 years, 6 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 "base/basictypes.h" 8 #include "base/basictypes.h"
9 #include "courgette/disassembler.h" 9 #include "courgette/disassembler.h"
10 #include "courgette/memory_allocator.h" 10 #include "courgette/memory_allocator.h"
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40 // Public for unittests only 40 // Public for unittests only
41 std::vector<RVA> &Abs32Locations() { return abs32_locations_; } 41 std::vector<RVA> &Abs32Locations() { return abs32_locations_; }
42 std::vector<RVA> &Rel32Locations() { return rel32_locations_; } 42 std::vector<RVA> &Rel32Locations() { return rel32_locations_; }
43 43
44 protected: 44 protected:
45 45
46 uint32 DiscoverLength(); 46 uint32 DiscoverLength();
47 47
48 // Misc Section Helpers 48 // Misc Section Helpers
49 49
50 const Elf32_Half SectionHeaderCount() const { 50 Elf32_Half SectionHeaderCount() const {
51 return section_header_table_size_; 51 return section_header_table_size_;
52 } 52 }
53 53
54 const Elf32_Shdr *SectionHeader(int id) const { 54 const Elf32_Shdr *SectionHeader(int id) const {
55 assert(id >= 0 && id < SectionHeaderCount()); 55 assert(id >= 0 && id < SectionHeaderCount());
56 return section_header_table_ + id; 56 return section_header_table_ + id;
57 } 57 }
58 58
59 const uint8 *SectionBody(int id) const { 59 const uint8 *SectionBody(int id) const {
60 return OffsetToPointer(SectionHeader(id)->sh_offset); 60 return OffsetToPointer(SectionHeader(id)->sh_offset);
61 } 61 }
62 62
63 const Elf32_Word SectionBodySize(int id) const { 63 Elf32_Word SectionBodySize(int id) const {
64 return SectionHeader(id)->sh_size; 64 return SectionHeader(id)->sh_size;
65 } 65 }
66 66
67 // Misc Segment Helpers 67 // Misc Segment Helpers
68 68
69 const Elf32_Half ProgramSegmentHeaderCount() const { 69 Elf32_Half ProgramSegmentHeaderCount() const {
70 return program_header_table_size_; 70 return program_header_table_size_;
71 } 71 }
72 72
73 const Elf32_Phdr *ProgramSegmentHeader(int id) const { 73 const Elf32_Phdr *ProgramSegmentHeader(int id) const {
74 assert(id >= 0 && id < ProgramSegmentHeaderCount()); 74 assert(id >= 0 && id < ProgramSegmentHeaderCount());
75 return program_header_table_ + id; 75 return program_header_table_ + id;
76 } 76 }
77 77
78 // The virtual memory address at which this program segment will be loaded 78 // The virtual memory address at which this program segment will be loaded
79 const Elf32_Addr ProgramSegmentMemoryBegin(int id) const { 79 Elf32_Addr ProgramSegmentMemoryBegin(int id) const {
80 return ProgramSegmentHeader(id)->p_vaddr; 80 return ProgramSegmentHeader(id)->p_vaddr;
81 } 81 }
82 82
83 // The number of virtual memory bytes for this program segment 83 // The number of virtual memory bytes for this program segment
84 const Elf32_Word ProgramSegmentMemorySize(int id) const { 84 Elf32_Word ProgramSegmentMemorySize(int id) const {
85 return ProgramSegmentHeader(id)->p_memsz; 85 return ProgramSegmentHeader(id)->p_memsz;
86 } 86 }
87 87
88 // Pointer into the source file for this program segment 88 // Pointer into the source file for this program segment
89 const Elf32_Addr ProgramSegmentFileOffset(int id) const { 89 Elf32_Addr ProgramSegmentFileOffset(int id) const {
90 return ProgramSegmentHeader(id)->p_offset; 90 return ProgramSegmentHeader(id)->p_offset;
91 } 91 }
92 92
93 // Number of file bytes for this program segment. Is <= ProgramMemorySize. 93 // Number of file bytes for this program segment. Is <= ProgramMemorySize.
94 const Elf32_Word ProgramSegmentFileSize(int id) const { 94 Elf32_Word ProgramSegmentFileSize(int id) const {
95 return ProgramSegmentHeader(id)->p_filesz; 95 return ProgramSegmentHeader(id)->p_filesz;
96 } 96 }
97 97
98 // Misc address space helpers 98 // Misc address space helpers
99 99
100 CheckBool IsValidRVA(RVA rva) const WARN_UNUSED_RESULT; 100 CheckBool IsValidRVA(RVA rva) const WARN_UNUSED_RESULT;
101 101
102 // Convert an ELF relocation struction into an RVA 102 // Convert an ELF relocation struction into an RVA
103 virtual CheckBool RelToRVA(Elf32_Rel rel, RVA* result) 103 virtual CheckBool RelToRVA(Elf32_Rel rel, RVA* result)
104 const WARN_UNUSED_RESULT = 0; 104 const WARN_UNUSED_RESULT = 0;
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145 145
146 std::vector<RVA> abs32_locations_; 146 std::vector<RVA> abs32_locations_;
147 std::vector<RVA> rel32_locations_; 147 std::vector<RVA> rel32_locations_;
148 148
149 DISALLOW_COPY_AND_ASSIGN(DisassemblerElf32); 149 DISALLOW_COPY_AND_ASSIGN(DisassemblerElf32);
150 }; 150 };
151 151
152 } // namespace courgette 152 } // namespace courgette
153 153
154 #endif // COURGETTE_DISASSEMBLER_ELF_32_H_ 154 #endif // COURGETTE_DISASSEMBLER_ELF_32_H_
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