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f51461c8 | 1 | /** @file\r |
97fa0ee9 | 2 | Elf convert solution\r |
f51461c8 | 3 | \r |
97fa0ee9 | 4 | Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>\r |
f51461c8 LG |
5 | \r |
6 | This program and the accompanying materials are licensed and made available \r | |
7 | under the terms and conditions of the BSD License which accompanies this \r | |
8 | distribution. The full text of the license may be found at \r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include "WinNtInclude.h"\r | |
17 | \r | |
18 | #ifndef __GNUC__\r | |
19 | #include <windows.h>\r | |
20 | #include <io.h>\r | |
21 | #endif\r | |
22 | #include <stdio.h>\r | |
23 | #include <stdlib.h>\r | |
24 | #include <string.h>\r | |
25 | #include <time.h>\r | |
26 | #include <ctype.h>\r | |
27 | \r | |
28 | #include <Common/UefiBaseTypes.h>\r | |
29 | #include <IndustryStandard/PeImage.h>\r | |
30 | \r | |
31 | #include "EfiUtilityMsgs.h"\r | |
32 | \r | |
33 | #include "GenFw.h"\r | |
34 | #include "ElfConvert.h"\r | |
35 | #include "Elf32Convert.h"\r | |
36 | #include "Elf64Convert.h"\r | |
37 | \r | |
38 | //\r | |
39 | // Result Coff file in memory.\r | |
40 | //\r | |
41 | UINT8 *mCoffFile = NULL;\r | |
42 | \r | |
43 | //\r | |
44 | // COFF relocation data\r | |
45 | //\r | |
46 | EFI_IMAGE_BASE_RELOCATION *mCoffBaseRel;\r | |
47 | UINT16 *mCoffEntryRel;\r | |
48 | \r | |
49 | //\r | |
50 | // Current offset in coff file.\r | |
51 | //\r | |
52 | UINT32 mCoffOffset;\r | |
53 | \r | |
54 | //\r | |
55 | // Offset in Coff file of headers and sections.\r | |
56 | //\r | |
57 | UINT32 mTableOffset;\r | |
58 | \r | |
59 | //\r | |
60 | //*****************************************************************************\r | |
61 | // Common ELF Functions\r | |
62 | //*****************************************************************************\r | |
63 | //\r | |
64 | \r | |
65 | VOID\r | |
66 | CoffAddFixupEntry(\r | |
67 | UINT16 Val\r | |
68 | )\r | |
69 | {\r | |
70 | *mCoffEntryRel = Val;\r | |
71 | mCoffEntryRel++;\r | |
72 | mCoffBaseRel->SizeOfBlock += 2;\r | |
73 | mCoffOffset += 2;\r | |
74 | }\r | |
75 | \r | |
76 | VOID\r | |
77 | CoffAddFixup(\r | |
78 | UINT32 Offset,\r | |
79 | UINT8 Type\r | |
80 | )\r | |
81 | {\r | |
82 | if (mCoffBaseRel == NULL\r | |
83 | || mCoffBaseRel->VirtualAddress != (Offset & ~0xfff)) {\r | |
84 | if (mCoffBaseRel != NULL) {\r | |
85 | //\r | |
86 | // Add a null entry (is it required ?)\r | |
87 | //\r | |
88 | CoffAddFixupEntry (0);\r | |
89 | \r | |
90 | //\r | |
91 | // Pad for alignment.\r | |
92 | //\r | |
93 | if (mCoffOffset % 4 != 0)\r | |
94 | CoffAddFixupEntry (0);\r | |
95 | }\r | |
96 | \r | |
97 | mCoffFile = realloc (\r | |
98 | mCoffFile,\r | |
99 | mCoffOffset + sizeof(EFI_IMAGE_BASE_RELOCATION) + 2*0x1000\r | |
100 | );\r | |
101 | memset (\r | |
102 | mCoffFile + mCoffOffset, 0,\r | |
103 | sizeof(EFI_IMAGE_BASE_RELOCATION) + 2*0x1000\r | |
104 | );\r | |
105 | \r | |
106 | mCoffBaseRel = (EFI_IMAGE_BASE_RELOCATION*)(mCoffFile + mCoffOffset);\r | |
107 | mCoffBaseRel->VirtualAddress = Offset & ~0xfff;\r | |
108 | mCoffBaseRel->SizeOfBlock = sizeof(EFI_IMAGE_BASE_RELOCATION);\r | |
109 | \r | |
110 | mCoffEntryRel = (UINT16 *)(mCoffBaseRel + 1);\r | |
111 | mCoffOffset += sizeof(EFI_IMAGE_BASE_RELOCATION);\r | |
112 | }\r | |
113 | \r | |
114 | //\r | |
115 | // Fill the entry.\r | |
116 | //\r | |
117 | CoffAddFixupEntry((UINT16) ((Type << 12) | (Offset & 0xfff)));\r | |
118 | }\r | |
119 | \r | |
120 | VOID\r | |
121 | CreateSectionHeader (\r | |
122 | const CHAR8 *Name,\r | |
123 | UINT32 Offset,\r | |
124 | UINT32 Size,\r | |
125 | UINT32 Flags\r | |
126 | )\r | |
127 | {\r | |
128 | EFI_IMAGE_SECTION_HEADER *Hdr;\r | |
129 | Hdr = (EFI_IMAGE_SECTION_HEADER*)(mCoffFile + mTableOffset);\r | |
130 | \r | |
131 | strcpy((char *)Hdr->Name, Name);\r | |
132 | Hdr->Misc.VirtualSize = Size;\r | |
133 | Hdr->VirtualAddress = Offset;\r | |
134 | Hdr->SizeOfRawData = Size;\r | |
135 | Hdr->PointerToRawData = Offset;\r | |
136 | Hdr->PointerToRelocations = 0;\r | |
137 | Hdr->PointerToLinenumbers = 0;\r | |
138 | Hdr->NumberOfRelocations = 0;\r | |
139 | Hdr->NumberOfLinenumbers = 0;\r | |
140 | Hdr->Characteristics = Flags;\r | |
141 | \r | |
142 | mTableOffset += sizeof (EFI_IMAGE_SECTION_HEADER);\r | |
143 | }\r | |
144 | \r | |
145 | //\r | |
146 | //*****************************************************************************\r | |
147 | // Functions called from GenFw main code.\r | |
148 | //*****************************************************************************\r | |
149 | //\r | |
150 | \r | |
151 | INTN\r | |
152 | IsElfHeader (\r | |
153 | UINT8 *FileBuffer\r | |
154 | )\r | |
155 | {\r | |
156 | return (FileBuffer[EI_MAG0] == ELFMAG0 && \r | |
157 | FileBuffer[EI_MAG1] == ELFMAG1 &&\r | |
158 | FileBuffer[EI_MAG2] == ELFMAG2 &&\r | |
159 | FileBuffer[EI_MAG3] == ELFMAG3);\r | |
160 | }\r | |
161 | \r | |
162 | BOOLEAN\r | |
163 | ConvertElf (\r | |
164 | UINT8 **FileBuffer,\r | |
165 | UINT32 *FileLength\r | |
166 | )\r | |
167 | {\r | |
168 | ELF_FUNCTION_TABLE ElfFunctions;\r | |
169 | UINT8 EiClass;\r | |
170 | \r | |
171 | //\r | |
172 | // Determine ELF type and set function table pointer correctly.\r | |
173 | //\r | |
174 | VerboseMsg ("Check Elf Image Header");\r | |
175 | EiClass = (*FileBuffer)[EI_CLASS];\r | |
176 | if (EiClass == ELFCLASS32) {\r | |
177 | if (!InitializeElf32 (*FileBuffer, &ElfFunctions)) {\r | |
178 | return FALSE;\r | |
179 | }\r | |
180 | } else if (EiClass == ELFCLASS64) {\r | |
181 | if (!InitializeElf64 (*FileBuffer, &ElfFunctions)) {\r | |
182 | return FALSE;\r | |
183 | }\r | |
184 | } else {\r | |
185 | Error (NULL, 0, 3000, "Unsupported", "ELF EI_CLASS not supported.");\r | |
186 | return FALSE;\r | |
187 | }\r | |
188 | \r | |
189 | //\r | |
190 | // Compute sections new address.\r | |
191 | // \r | |
192 | VerboseMsg ("Compute sections new address.");\r | |
193 | ElfFunctions.ScanSections ();\r | |
194 | \r | |
195 | //\r | |
196 | // Write and relocate sections.\r | |
197 | //\r | |
198 | VerboseMsg ("Write and relocate sections.");\r | |
199 | ElfFunctions.WriteSections (SECTION_TEXT);\r | |
200 | ElfFunctions.WriteSections (SECTION_DATA);\r | |
201 | ElfFunctions.WriteSections (SECTION_HII);\r | |
202 | \r | |
203 | //\r | |
204 | // Translate and write relocations.\r | |
205 | //\r | |
206 | VerboseMsg ("Translate and write relocations.");\r | |
207 | ElfFunctions.WriteRelocations ();\r | |
208 | \r | |
209 | //\r | |
210 | // Write debug info.\r | |
211 | //\r | |
212 | VerboseMsg ("Write debug info.");\r | |
213 | ElfFunctions.WriteDebug ();\r | |
214 | \r | |
215 | //\r | |
216 | // Make sure image size is correct before returning the new image.\r | |
217 | //\r | |
218 | VerboseMsg ("Set image size.");\r | |
219 | ElfFunctions.SetImageSize ();\r | |
220 | \r | |
221 | //\r | |
222 | // Replace.\r | |
223 | //\r | |
224 | free (*FileBuffer);\r | |
225 | *FileBuffer = mCoffFile;\r | |
226 | *FileLength = mCoffOffset;\r | |
227 | \r | |
228 | //\r | |
229 | // Free resources used by ELF functions.\r | |
230 | //\r | |
231 | ElfFunctions.CleanUp ();\r | |
232 | \r | |
233 | return TRUE;\r | |
234 | }\r |