|
1 /* |
|
2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * |
|
5 * This program is free software: you can redistribute it and/or modify |
|
6 * it under the terms of the GNU Lesser General Public License as published by |
|
7 * the Free Software Foundation, either version 3 of the License, or |
|
8 * (at your option) any later version. |
|
9 * |
|
10 * This program is distributed in the hope that it will be useful, |
|
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
13 * GNU Lesser General Public License for more details. |
|
14 * |
|
15 * You should have received a copy of the GNU Lesser General Public License |
|
16 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
|
17 */ |
|
18 |
|
19 #include <string.h> |
|
20 |
|
21 #include "elfsectionmanager.h" |
|
22 |
|
23 void ElfSectionManager::GetFileFragmentData(FileFragmentData & aFileFragmentData ){ |
|
24 int nSections = iSections.size(); |
|
25 if (nSections > 0){ |
|
26 iData = new Elf32_Shdr[nSections]; |
|
27 Elf32_Shdr * p = iData; |
|
28 SectionList::iterator aSection = iSections.begin(); |
|
29 SectionList::iterator end = iSections.end(); |
|
30 while (aSection != end) { |
|
31 *p = aSection->GetSectionHeader().iElf32Shdr; |
|
32 p++; |
|
33 aSection++; |
|
34 } |
|
35 SetFileFragmentData(aFileFragmentData, Size(), reinterpret_cast<char *>(iData)); |
|
36 } |
|
37 } |
|
38 |
|
39 size_t ElfSectionManager::Size(){ |
|
40 return SectionHeaderSize(); |
|
41 } |
|
42 |
|
43 void ElfSectionManager::DeleteFileFragmentData(){ |
|
44 if (iData) { |
|
45 Elf32_Shdr * d = iData; |
|
46 iData = NULL; |
|
47 delete[] d; |
|
48 } |
|
49 } |
|
50 |
|
51 void ElfSectionManager::AddData(){ |
|
52 AddData(iOutputFile); |
|
53 } |
|
54 |
|
55 void ElfSectionManager::AddData(OutputFile & aOutputFile){ |
|
56 if (iSections.size() > 0) { |
|
57 SectionList::iterator aSection = iSections.begin(); |
|
58 SectionList::iterator end = iSections.end(); |
|
59 while (aSection != end) { |
|
60 aSection->AddData(aOutputFile); |
|
61 aSection++; |
|
62 } |
|
63 AddSectionTable(); |
|
64 } |
|
65 } |
|
66 |
|
67 void ElfSectionManager::EnsureSectionStringTableSectionAdded(){ |
|
68 if (iSectionStringTableSectionAdded) return; |
|
69 |
|
70 // set iSectionStringTableSectionAdded true now so we don't do the next bit twice; |
|
71 iSectionStringTableSectionAdded = true; |
|
72 |
|
73 // first create the UNDEF section |
|
74 ElfSectionNoData * aUndefData = new ElfSectionNoData(); |
|
75 |
|
76 Elf32_Shdr undef; |
|
77 undef.sh_name = 0; |
|
78 undef.sh_type = SHT_NULL; |
|
79 undef.sh_flags = 0; |
|
80 undef.sh_addr = 0; |
|
81 undef.sh_offset = 0; |
|
82 undef.sh_size = 0; |
|
83 undef.sh_link = 0; |
|
84 undef.sh_info = 0; |
|
85 undef.sh_addralign = 0; |
|
86 undef.sh_entsize = 0; |
|
87 |
|
88 ElfSection aUndefSection(aUndefData, "", undef); |
|
89 AddSection(aUndefSection); |
|
90 |
|
91 ElfSectionElfData * aSectionStringTableSectionData = new ElfSectionElfData(iStringTable); |
|
92 Elf32_Shdr shdr; |
|
93 shdr.sh_name = 0; // for now. |
|
94 shdr.sh_type = SHT_STRTAB; |
|
95 shdr.sh_flags = 0; |
|
96 shdr.sh_addr = 0; |
|
97 shdr.sh_offset = 0; // for now |
|
98 shdr.sh_size = 0; // for now. |
|
99 shdr.sh_link = SHN_UNDEF; |
|
100 shdr.sh_info = 0; |
|
101 shdr.sh_addralign = 0; |
|
102 shdr.sh_entsize = 0; |
|
103 |
|
104 ElfSection aSectionStringTableSection(aSectionStringTableSectionData, ".shstrtab", shdr); |
|
105 AddSection(aSectionStringTableSection); |
|
106 iElf32Header.SetSectionStringNdx(iSections.size() - 1); |
|
107 } |
|
108 void ElfSectionManager::AddSection(ElfSection & aSection){ |
|
109 EnsureSectionStringTableSectionAdded(); |
|
110 if (aSection.GetName().size() > 0){ |
|
111 // rename sections for GDB (yuk!) |
|
112 String sectionName(aSection.GetName()); |
|
113 String ro("ER_RO"); |
|
114 String text(".text"); |
|
115 if (sectionName == ro){ |
|
116 sectionName = text; |
|
117 } else { |
|
118 String rw("ER_RW"); |
|
119 String data(".data"); |
|
120 if (sectionName == rw){ |
|
121 sectionName = data; |
|
122 } else { |
|
123 String zi("ER_ZI"); |
|
124 String bss(".bss"); |
|
125 if (sectionName == zi) |
|
126 sectionName = bss; |
|
127 } |
|
128 } |
|
129 size_t nameOffset = iStringTable.AddName(sectionName); |
|
130 aSection.SetNameOffset(nameOffset); |
|
131 } else { |
|
132 // use the initial Null String. |
|
133 size_t nameOffset = iStringTable.AllocateInitialNullString(); |
|
134 aSection.SetNameOffset(nameOffset); |
|
135 } |
|
136 aSection.SetIndex(iSections.size()); |
|
137 iSections.push_back(aSection); |
|
138 iElf32Header.AddSectionHdr(); |
|
139 } |
|
140 |
|
141 size_t ElfSectionManager::SectionHeaderSize(){ |
|
142 return iSections.size() * sizeof(Elf32_Shdr); |
|
143 } |
|
144 |
|
145 void ElfSectionManager::AddSectionStringTable(){ |
|
146 // Assume the section header already setup and we've got hold of it. We need to say where the strings ended up. |
|
147 const FileFragment & aSectionTableFrag = iOutputFile.GetFileFragment(this); |
|
148 SetOffset(aSectionTableFrag.GetOffset()); |
|
149 } |
|
150 |
|
151 void ElfSectionManager::AddSectionTable(){ |
|
152 const FileFragment & aSectionTableFrag = iOutputFile.GetFileFragment(this); |
|
153 SetOffset(aSectionTableFrag.GetOffset()); |
|
154 iElf32Header.SetSectionHdrOffset(GetOffset()); |
|
155 } |