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f51461c8 | 1 | /** @file\r |
97fa0ee9 | 2 | Elf32 Convert solution\r |
f51461c8 | 3 | \r |
5aec6991 | 4 | Copyright (c) 2010 - 2016, Intel Corporation. All rights reserved.<BR>\r |
f51461c8 LG |
5 | Portions copyright (c) 2013, ARM Ltd. All rights reserved.<BR>\r |
6 | \r | |
7 | This program and the accompanying materials are licensed and made available\r | |
8 | under the terms and conditions of the BSD License which accompanies this\r | |
9 | distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #include "WinNtInclude.h"\r | |
18 | \r | |
19 | #ifndef __GNUC__\r | |
20 | #include <windows.h>\r | |
21 | #include <io.h>\r | |
22 | #endif\r | |
23 | #include <assert.h>\r | |
ea3e924a | 24 | #include <stdbool.h>\r |
f51461c8 LG |
25 | #include <stdio.h>\r |
26 | #include <stdlib.h>\r | |
27 | #include <string.h>\r | |
28 | #include <time.h>\r | |
29 | #include <ctype.h>\r | |
30 | \r | |
31 | #include <Common/UefiBaseTypes.h>\r | |
32 | #include <IndustryStandard/PeImage.h>\r | |
33 | \r | |
34 | #include "PeCoffLib.h"\r | |
35 | #include "EfiUtilityMsgs.h"\r | |
36 | \r | |
37 | #include "GenFw.h"\r | |
38 | #include "ElfConvert.h"\r | |
39 | #include "Elf32Convert.h"\r | |
40 | \r | |
41 | STATIC\r | |
42 | VOID\r | |
43 | ScanSections32 (\r | |
44 | VOID\r | |
45 | );\r | |
46 | \r | |
47 | STATIC\r | |
48 | BOOLEAN\r | |
49 | WriteSections32 (\r | |
50 | SECTION_FILTER_TYPES FilterType\r | |
51 | );\r | |
52 | \r | |
53 | STATIC\r | |
54 | VOID\r | |
55 | WriteRelocations32 (\r | |
56 | VOID\r | |
57 | );\r | |
58 | \r | |
59 | STATIC\r | |
60 | VOID\r | |
61 | WriteDebug32 (\r | |
62 | VOID\r | |
63 | );\r | |
64 | \r | |
65 | STATIC\r | |
66 | VOID\r | |
67 | SetImageSize32 (\r | |
68 | VOID\r | |
69 | );\r | |
70 | \r | |
71 | STATIC\r | |
72 | VOID\r | |
73 | CleanUp32 (\r | |
74 | VOID\r | |
75 | );\r | |
76 | \r | |
77 | //\r | |
78 | // Rename ELF32 strucutres to common names to help when porting to ELF64.\r | |
79 | //\r | |
80 | typedef Elf32_Shdr Elf_Shdr;\r | |
81 | typedef Elf32_Ehdr Elf_Ehdr;\r | |
82 | typedef Elf32_Rel Elf_Rel;\r | |
83 | typedef Elf32_Sym Elf_Sym;\r | |
84 | typedef Elf32_Phdr Elf_Phdr;\r | |
85 | typedef Elf32_Dyn Elf_Dyn;\r | |
86 | #define ELFCLASS ELFCLASS32\r | |
87 | #define ELF_R_TYPE(r) ELF32_R_TYPE(r)\r | |
88 | #define ELF_R_SYM(r) ELF32_R_SYM(r)\r | |
89 | \r | |
90 | //\r | |
91 | // Well known ELF structures.\r | |
92 | //\r | |
93 | STATIC Elf_Ehdr *mEhdr;\r | |
94 | STATIC Elf_Shdr *mShdrBase;\r | |
95 | STATIC Elf_Phdr *mPhdrBase;\r | |
96 | \r | |
97 | //\r | |
98 | // Coff information\r | |
99 | //\r | |
54b1b57a | 100 | STATIC UINT32 mCoffAlignment = 0x20;\r |
f51461c8 LG |
101 | \r |
102 | //\r | |
103 | // PE section alignment.\r | |
104 | //\r | |
0192b71c | 105 | STATIC const UINT16 mCoffNbrSections = 4;\r |
f51461c8 LG |
106 | \r |
107 | //\r | |
108 | // ELF sections to offset in Coff file.\r | |
109 | //\r | |
110 | STATIC UINT32 *mCoffSectionsOffset = NULL;\r | |
111 | \r | |
112 | //\r | |
113 | // Offsets in COFF file\r | |
114 | //\r | |
115 | STATIC UINT32 mNtHdrOffset;\r | |
116 | STATIC UINT32 mTextOffset;\r | |
117 | STATIC UINT32 mDataOffset;\r | |
118 | STATIC UINT32 mHiiRsrcOffset;\r | |
119 | STATIC UINT32 mRelocOffset;\r | |
0192b71c | 120 | STATIC UINT32 mDebugOffset;\r |
f51461c8 LG |
121 | \r |
122 | //\r | |
123 | // Initialization Function\r | |
124 | //\r | |
125 | BOOLEAN\r | |
126 | InitializeElf32 (\r | |
127 | UINT8 *FileBuffer,\r | |
128 | ELF_FUNCTION_TABLE *ElfFunctions\r | |
129 | )\r | |
130 | {\r | |
131 | //\r | |
132 | // Initialize data pointer and structures.\r | |
133 | //\r | |
134 | mEhdr = (Elf_Ehdr*) FileBuffer; \r | |
135 | \r | |
136 | //\r | |
137 | // Check the ELF32 specific header information.\r | |
138 | //\r | |
139 | if (mEhdr->e_ident[EI_CLASS] != ELFCLASS32) {\r | |
140 | Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS32");\r | |
141 | return FALSE;\r | |
142 | }\r | |
143 | if (mEhdr->e_ident[EI_DATA] != ELFDATA2LSB) {\r | |
144 | Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFDATA2LSB");\r | |
145 | return FALSE;\r | |
146 | } \r | |
147 | if ((mEhdr->e_type != ET_EXEC) && (mEhdr->e_type != ET_DYN)) {\r | |
148 | Error (NULL, 0, 3000, "Unsupported", "ELF e_type not ET_EXEC or ET_DYN");\r | |
149 | return FALSE;\r | |
150 | }\r | |
151 | if (!((mEhdr->e_machine == EM_386) || (mEhdr->e_machine == EM_ARM))) { \r | |
152 | Error (NULL, 0, 3000, "Unsupported", "ELF e_machine not EM_386 or EM_ARM");\r | |
153 | return FALSE;\r | |
154 | }\r | |
155 | if (mEhdr->e_version != EV_CURRENT) {\r | |
156 | Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT);\r | |
157 | return FALSE;\r | |
158 | }\r | |
159 | \r | |
160 | //\r | |
161 | // Update section header pointers\r | |
162 | //\r | |
163 | mShdrBase = (Elf_Shdr *)((UINT8 *)mEhdr + mEhdr->e_shoff);\r | |
164 | mPhdrBase = (Elf_Phdr *)((UINT8 *)mEhdr + mEhdr->e_phoff);\r | |
165 | \r | |
166 | //\r | |
167 | // Create COFF Section offset buffer and zero.\r | |
168 | //\r | |
169 | mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32));\r | |
170 | memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32));\r | |
171 | \r | |
172 | //\r | |
173 | // Fill in function pointers.\r | |
174 | //\r | |
175 | ElfFunctions->ScanSections = ScanSections32;\r | |
176 | ElfFunctions->WriteSections = WriteSections32;\r | |
177 | ElfFunctions->WriteRelocations = WriteRelocations32;\r | |
178 | ElfFunctions->WriteDebug = WriteDebug32;\r | |
179 | ElfFunctions->SetImageSize = SetImageSize32;\r | |
180 | ElfFunctions->CleanUp = CleanUp32;\r | |
181 | \r | |
182 | return TRUE;\r | |
183 | }\r | |
184 | \r | |
185 | \r | |
186 | //\r | |
187 | // Header by Index functions\r | |
188 | //\r | |
189 | STATIC\r | |
190 | Elf_Shdr*\r | |
191 | GetShdrByIndex (\r | |
192 | UINT32 Num\r | |
193 | )\r | |
194 | {\r | |
17751c5f ML |
195 | if (Num >= mEhdr->e_shnum) {\r |
196 | Error (NULL, 0, 3000, "Invalid", "GetShdrByIndex: Index %u is too high.", Num);\r | |
197 | exit(EXIT_FAILURE);\r | |
198 | }\r | |
199 | \r | |
f51461c8 LG |
200 | return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize);\r |
201 | }\r | |
202 | \r | |
203 | STATIC\r | |
204 | Elf_Phdr*\r | |
205 | GetPhdrByIndex (\r | |
206 | UINT32 num\r | |
207 | )\r | |
208 | {\r | |
209 | if (num >= mEhdr->e_phnum) {\r | |
17751c5f ML |
210 | Error (NULL, 0, 3000, "Invalid", "GetPhdrByIndex: Index %u is too high.", num);\r |
211 | exit(EXIT_FAILURE);\r | |
f51461c8 LG |
212 | }\r |
213 | \r | |
214 | return (Elf_Phdr *)((UINT8*)mPhdrBase + num * mEhdr->e_phentsize);\r | |
215 | }\r | |
216 | \r | |
217 | STATIC\r | |
218 | UINT32\r | |
219 | CoffAlign (\r | |
220 | UINT32 Offset\r | |
221 | )\r | |
222 | {\r | |
223 | return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1);\r | |
224 | }\r | |
225 | \r | |
4f7d5c67 AB |
226 | STATIC\r |
227 | UINT32\r | |
228 | DebugRvaAlign (\r | |
229 | UINT32 Offset\r | |
230 | )\r | |
231 | {\r | |
232 | return (Offset + 3) & ~3;\r | |
233 | }\r | |
234 | \r | |
f51461c8 LG |
235 | //\r |
236 | // filter functions\r | |
237 | //\r | |
238 | STATIC\r | |
239 | BOOLEAN\r | |
240 | IsTextShdr (\r | |
241 | Elf_Shdr *Shdr\r | |
242 | )\r | |
243 | {\r | |
244 | return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC);\r | |
245 | }\r | |
246 | \r | |
247 | STATIC\r | |
248 | BOOLEAN\r | |
249 | IsHiiRsrcShdr (\r | |
250 | Elf_Shdr *Shdr\r | |
251 | )\r | |
252 | {\r | |
253 | Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);\r | |
254 | \r | |
255 | return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0);\r | |
256 | }\r | |
257 | \r | |
258 | STATIC\r | |
259 | BOOLEAN\r | |
260 | IsDataShdr (\r | |
261 | Elf_Shdr *Shdr\r | |
262 | )\r | |
263 | {\r | |
264 | if (IsHiiRsrcShdr(Shdr)) {\r | |
265 | return FALSE;\r | |
266 | }\r | |
267 | return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE);\r | |
268 | }\r | |
269 | \r | |
621bb723 ML |
270 | STATIC\r |
271 | BOOLEAN\r | |
272 | IsStrtabShdr (\r | |
273 | Elf_Shdr *Shdr\r | |
274 | )\r | |
275 | {\r | |
276 | Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);\r | |
277 | \r | |
278 | return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_STRTAB_SECTION_NAME) == 0);\r | |
279 | }\r | |
280 | \r | |
281 | STATIC\r | |
282 | Elf_Shdr *\r | |
283 | FindStrtabShdr (\r | |
284 | VOID\r | |
285 | )\r | |
286 | {\r | |
287 | UINT32 i;\r | |
288 | for (i = 0; i < mEhdr->e_shnum; i++) {\r | |
289 | Elf_Shdr *shdr = GetShdrByIndex(i);\r | |
290 | if (IsStrtabShdr(shdr)) {\r | |
291 | return shdr;\r | |
292 | }\r | |
293 | }\r | |
294 | return NULL;\r | |
295 | }\r | |
296 | \r | |
297 | STATIC\r | |
298 | const UINT8 *\r | |
299 | GetSymName (\r | |
300 | Elf_Sym *Sym\r | |
301 | )\r | |
302 | {\r | |
303 | if (Sym->st_name == 0) {\r | |
304 | return NULL;\r | |
305 | }\r | |
306 | \r | |
307 | Elf_Shdr *StrtabShdr = FindStrtabShdr();\r | |
308 | if (StrtabShdr == NULL) {\r | |
309 | return NULL;\r | |
310 | }\r | |
311 | \r | |
312 | assert(Sym->st_name < StrtabShdr->sh_size);\r | |
313 | \r | |
ea3e924a ML |
314 | UINT8* StrtabContents = (UINT8*)mEhdr + StrtabShdr->sh_offset;\r |
315 | \r | |
316 | bool foundEnd = false;\r | |
317 | for (UINT32 i = Sym->st_name; (i < StrtabShdr->sh_size) && !foundEnd; i++) {\r | |
318 | foundEnd = StrtabContents[i] == 0;\r | |
319 | }\r | |
320 | assert(foundEnd);\r | |
321 | \r | |
322 | return StrtabContents + Sym->st_name;\r | |
621bb723 ML |
323 | }\r |
324 | \r | |
f51461c8 LG |
325 | //\r |
326 | // Elf functions interface implementation\r | |
327 | //\r | |
328 | \r | |
329 | STATIC\r | |
330 | VOID\r | |
331 | ScanSections32 (\r | |
332 | VOID\r | |
333 | )\r | |
334 | {\r | |
335 | UINT32 i;\r | |
336 | EFI_IMAGE_DOS_HEADER *DosHdr;\r | |
337 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r | |
338 | UINT32 CoffEntry;\r | |
339 | UINT32 SectionCount;\r | |
234f9ff9 | 340 | BOOLEAN FoundSection;\r |
f51461c8 LG |
341 | \r |
342 | CoffEntry = 0;\r | |
343 | mCoffOffset = 0;\r | |
f51461c8 LG |
344 | \r |
345 | //\r | |
346 | // Coff file start with a DOS header.\r | |
347 | //\r | |
348 | mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40;\r | |
349 | mNtHdrOffset = mCoffOffset;\r | |
350 | switch (mEhdr->e_machine) {\r | |
351 | case EM_386:\r | |
352 | case EM_ARM:\r | |
353 | mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS32);\r | |
354 | break;\r | |
355 | default:\r | |
356 | VerboseMsg ("%s unknown e_machine type. Assume IA-32", (UINTN)mEhdr->e_machine);\r | |
357 | mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS32);\r | |
358 | break;\r | |
359 | }\r | |
360 | \r | |
361 | mTableOffset = mCoffOffset;\r | |
362 | mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER);\r | |
363 | \r | |
54b1b57a AB |
364 | //\r |
365 | // Set mCoffAlignment to the maximum alignment of the input sections\r | |
366 | // we care about\r | |
367 | //\r | |
368 | for (i = 0; i < mEhdr->e_shnum; i++) {\r | |
369 | Elf_Shdr *shdr = GetShdrByIndex(i);\r | |
370 | if (shdr->sh_addralign <= mCoffAlignment) {\r | |
371 | continue;\r | |
372 | }\r | |
373 | if (IsTextShdr(shdr) || IsDataShdr(shdr) || IsHiiRsrcShdr(shdr)) {\r | |
374 | mCoffAlignment = (UINT32)shdr->sh_addralign;\r | |
375 | }\r | |
376 | }\r | |
377 | \r | |
02a5421f AB |
378 | //\r |
379 | // Move the PE/COFF header right before the first section. This will help us\r | |
380 | // save space when converting to TE.\r | |
381 | //\r | |
382 | if (mCoffAlignment > mCoffOffset) {\r | |
383 | mNtHdrOffset += mCoffAlignment - mCoffOffset;\r | |
384 | mTableOffset += mCoffAlignment - mCoffOffset;\r | |
385 | mCoffOffset = mCoffAlignment;\r | |
386 | }\r | |
387 | \r | |
f51461c8 LG |
388 | //\r |
389 | // First text sections.\r | |
390 | //\r | |
391 | mCoffOffset = CoffAlign(mCoffOffset);\r | |
234f9ff9 EB |
392 | mTextOffset = mCoffOffset;\r |
393 | FoundSection = FALSE;\r | |
f51461c8 LG |
394 | SectionCount = 0;\r |
395 | for (i = 0; i < mEhdr->e_shnum; i++) {\r | |
396 | Elf_Shdr *shdr = GetShdrByIndex(i);\r | |
397 | if (IsTextShdr(shdr)) {\r | |
398 | if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {\r | |
399 | // the alignment field is valid\r | |
400 | if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {\r | |
401 | // if the section address is aligned we must align PE/COFF\r | |
402 | mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);\r | |
0bd0d6df AB |
403 | } else {\r |
404 | Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");\r | |
f51461c8 LG |
405 | }\r |
406 | }\r | |
407 | \r | |
408 | /* Relocate entry. */\r | |
409 | if ((mEhdr->e_entry >= shdr->sh_addr) &&\r | |
410 | (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) {\r | |
411 | CoffEntry = mCoffOffset + mEhdr->e_entry - shdr->sh_addr;\r | |
412 | }\r | |
413 | \r | |
414 | //\r | |
415 | // Set mTextOffset with the offset of the first '.text' section\r | |
416 | //\r | |
234f9ff9 | 417 | if (!FoundSection) {\r |
f51461c8 | 418 | mTextOffset = mCoffOffset;\r |
234f9ff9 | 419 | FoundSection = TRUE;\r |
f51461c8 LG |
420 | }\r |
421 | \r | |
422 | mCoffSectionsOffset[i] = mCoffOffset;\r | |
423 | mCoffOffset += shdr->sh_size;\r | |
424 | SectionCount ++;\r | |
425 | }\r | |
426 | }\r | |
427 | \r | |
234f9ff9 | 428 | if (!FoundSection) {\r |
f51461c8 LG |
429 | Error (NULL, 0, 3000, "Invalid", "Did not find any '.text' section.");\r |
430 | assert (FALSE);\r | |
431 | }\r | |
432 | \r | |
4f7d5c67 | 433 | mDebugOffset = DebugRvaAlign(mCoffOffset);\r |
0bd0d6df | 434 | mCoffOffset = CoffAlign(mCoffOffset);\r |
f51461c8 LG |
435 | \r |
436 | if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {\r | |
437 | Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 text section. Source level debug might not work correctly.", mInImageName);\r | |
438 | }\r | |
439 | \r | |
440 | //\r | |
441 | // Then data sections.\r | |
442 | //\r | |
443 | mDataOffset = mCoffOffset;\r | |
234f9ff9 | 444 | FoundSection = FALSE;\r |
f51461c8 LG |
445 | SectionCount = 0;\r |
446 | for (i = 0; i < mEhdr->e_shnum; i++) {\r | |
447 | Elf_Shdr *shdr = GetShdrByIndex(i);\r | |
448 | if (IsDataShdr(shdr)) {\r | |
449 | if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {\r | |
450 | // the alignment field is valid\r | |
451 | if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {\r | |
452 | // if the section address is aligned we must align PE/COFF\r | |
453 | mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);\r | |
0bd0d6df AB |
454 | } else {\r |
455 | Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");\r | |
f51461c8 LG |
456 | }\r |
457 | }\r | |
234f9ff9 EB |
458 | \r |
459 | //\r | |
460 | // Set mDataOffset with the offset of the first '.data' section\r | |
461 | //\r | |
462 | if (!FoundSection) {\r | |
463 | mDataOffset = mCoffOffset;\r | |
464 | FoundSection = TRUE;\r | |
465 | }\r | |
466 | \r | |
f51461c8 LG |
467 | mCoffSectionsOffset[i] = mCoffOffset;\r |
468 | mCoffOffset += shdr->sh_size;\r | |
469 | SectionCount ++;\r | |
470 | }\r | |
471 | }\r | |
f51461c8 LG |
472 | \r |
473 | if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {\r | |
474 | Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 data section. Source level debug might not work correctly.", mInImageName);\r | |
475 | }\r | |
476 | \r | |
0192b71c AB |
477 | //\r |
478 | // Make room for .debug data in .data (or .text if .data is empty) instead of\r | |
479 | // putting it in a section of its own. This is explicitly allowed by the\r | |
480 | // PE/COFF spec, and prevents bloat in the binary when using large values for\r | |
481 | // section alignment.\r | |
482 | //\r | |
483 | if (SectionCount > 0) {\r | |
4f7d5c67 | 484 | mDebugOffset = DebugRvaAlign(mCoffOffset);\r |
0192b71c AB |
485 | }\r |
486 | mCoffOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +\r | |
487 | sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +\r | |
488 | strlen(mInImageName) + 1;\r | |
489 | \r | |
490 | mCoffOffset = CoffAlign(mCoffOffset);\r | |
491 | if (SectionCount == 0) {\r | |
492 | mDataOffset = mCoffOffset;\r | |
493 | }\r | |
494 | \r | |
f51461c8 LG |
495 | //\r |
496 | // The HII resource sections.\r | |
497 | //\r | |
498 | mHiiRsrcOffset = mCoffOffset;\r | |
499 | for (i = 0; i < mEhdr->e_shnum; i++) {\r | |
500 | Elf_Shdr *shdr = GetShdrByIndex(i);\r | |
501 | if (IsHiiRsrcShdr(shdr)) {\r | |
502 | if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {\r | |
503 | // the alignment field is valid\r | |
504 | if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {\r | |
505 | // if the section address is aligned we must align PE/COFF\r | |
506 | mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);\r | |
0bd0d6df AB |
507 | } else {\r |
508 | Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");\r | |
f51461c8 LG |
509 | }\r |
510 | }\r | |
511 | if (shdr->sh_size != 0) {\r | |
234f9ff9 | 512 | mHiiRsrcOffset = mCoffOffset;\r |
f51461c8 LG |
513 | mCoffSectionsOffset[i] = mCoffOffset;\r |
514 | mCoffOffset += shdr->sh_size;\r | |
515 | mCoffOffset = CoffAlign(mCoffOffset);\r | |
516 | SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset);\r | |
517 | }\r | |
518 | break;\r | |
519 | }\r | |
520 | }\r | |
521 | \r | |
522 | mRelocOffset = mCoffOffset;\r | |
523 | \r | |
524 | //\r | |
525 | // Allocate base Coff file. Will be expanded later for relocations.\r | |
526 | //\r | |
527 | mCoffFile = (UINT8 *)malloc(mCoffOffset);\r | |
528 | memset(mCoffFile, 0, mCoffOffset);\r | |
529 | \r | |
530 | //\r | |
531 | // Fill headers.\r | |
532 | //\r | |
533 | DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile;\r | |
534 | DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE;\r | |
535 | DosHdr->e_lfanew = mNtHdrOffset;\r | |
536 | \r | |
537 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset);\r | |
538 | \r | |
539 | NtHdr->Pe32.Signature = EFI_IMAGE_NT_SIGNATURE;\r | |
540 | \r | |
541 | switch (mEhdr->e_machine) {\r | |
542 | case EM_386:\r | |
543 | NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_IA32;\r | |
544 | NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;\r | |
545 | break;\r | |
546 | case EM_ARM:\r | |
547 | NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_ARMT;\r | |
548 | NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;\r | |
549 | break;\r | |
550 | default:\r | |
ea3e924a | 551 | VerboseMsg ("%s unknown e_machine type %hu. Assume IA-32", mInImageName, mEhdr->e_machine);\r |
f51461c8 LG |
552 | NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_IA32;\r |
553 | NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;\r | |
554 | }\r | |
555 | \r | |
556 | NtHdr->Pe32.FileHeader.NumberOfSections = mCoffNbrSections;\r | |
557 | NtHdr->Pe32.FileHeader.TimeDateStamp = (UINT32) time(NULL);\r | |
558 | mImageTimeStamp = NtHdr->Pe32.FileHeader.TimeDateStamp;\r | |
559 | NtHdr->Pe32.FileHeader.PointerToSymbolTable = 0;\r | |
560 | NtHdr->Pe32.FileHeader.NumberOfSymbols = 0;\r | |
561 | NtHdr->Pe32.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32.OptionalHeader);\r | |
562 | NtHdr->Pe32.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE\r | |
563 | | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED\r | |
564 | | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED\r | |
565 | | EFI_IMAGE_FILE_32BIT_MACHINE;\r | |
566 | \r | |
567 | NtHdr->Pe32.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset;\r | |
568 | NtHdr->Pe32.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset;\r | |
569 | NtHdr->Pe32.OptionalHeader.SizeOfUninitializedData = 0;\r | |
570 | NtHdr->Pe32.OptionalHeader.AddressOfEntryPoint = CoffEntry;\r | |
571 | \r | |
572 | NtHdr->Pe32.OptionalHeader.BaseOfCode = mTextOffset;\r | |
573 | \r | |
574 | NtHdr->Pe32.OptionalHeader.BaseOfData = mDataOffset;\r | |
575 | NtHdr->Pe32.OptionalHeader.ImageBase = 0;\r | |
576 | NtHdr->Pe32.OptionalHeader.SectionAlignment = mCoffAlignment;\r | |
577 | NtHdr->Pe32.OptionalHeader.FileAlignment = mCoffAlignment;\r | |
578 | NtHdr->Pe32.OptionalHeader.SizeOfImage = 0;\r | |
579 | \r | |
580 | NtHdr->Pe32.OptionalHeader.SizeOfHeaders = mTextOffset;\r | |
581 | NtHdr->Pe32.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;\r | |
582 | \r | |
583 | //\r | |
584 | // Section headers.\r | |
585 | //\r | |
586 | if ((mDataOffset - mTextOffset) > 0) {\r | |
587 | CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset,\r | |
588 | EFI_IMAGE_SCN_CNT_CODE\r | |
589 | | EFI_IMAGE_SCN_MEM_EXECUTE\r | |
590 | | EFI_IMAGE_SCN_MEM_READ);\r | |
591 | } else {\r | |
592 | // Don't make a section of size 0.\r | |
593 | NtHdr->Pe32.FileHeader.NumberOfSections--;\r | |
594 | }\r | |
595 | \r | |
596 | if ((mHiiRsrcOffset - mDataOffset) > 0) {\r | |
597 | CreateSectionHeader (".data", mDataOffset, mHiiRsrcOffset - mDataOffset,\r | |
598 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA\r | |
599 | | EFI_IMAGE_SCN_MEM_WRITE\r | |
600 | | EFI_IMAGE_SCN_MEM_READ);\r | |
601 | } else {\r | |
602 | // Don't make a section of size 0.\r | |
603 | NtHdr->Pe32.FileHeader.NumberOfSections--;\r | |
604 | }\r | |
605 | \r | |
606 | if ((mRelocOffset - mHiiRsrcOffset) > 0) {\r | |
607 | CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset,\r | |
608 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA\r | |
609 | | EFI_IMAGE_SCN_MEM_READ);\r | |
610 | \r | |
611 | NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset;\r | |
612 | NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset;\r | |
613 | } else {\r | |
614 | // Don't make a section of size 0.\r | |
615 | NtHdr->Pe32.FileHeader.NumberOfSections--;\r | |
616 | }\r | |
617 | \r | |
618 | }\r | |
619 | \r | |
620 | STATIC\r | |
621 | BOOLEAN\r | |
622 | WriteSections32 (\r | |
623 | SECTION_FILTER_TYPES FilterType\r | |
624 | )\r | |
625 | {\r | |
626 | UINT32 Idx;\r | |
627 | Elf_Shdr *SecShdr;\r | |
628 | UINT32 SecOffset;\r | |
629 | BOOLEAN (*Filter)(Elf_Shdr *);\r | |
630 | \r | |
631 | //\r | |
632 | // Initialize filter pointer\r | |
633 | //\r | |
634 | switch (FilterType) {\r | |
635 | case SECTION_TEXT:\r | |
636 | Filter = IsTextShdr;\r | |
637 | break;\r | |
638 | case SECTION_HII:\r | |
639 | Filter = IsHiiRsrcShdr;\r | |
640 | break;\r | |
641 | case SECTION_DATA:\r | |
642 | Filter = IsDataShdr;\r | |
643 | break;\r | |
644 | default:\r | |
645 | return FALSE;\r | |
646 | }\r | |
647 | \r | |
648 | //\r | |
649 | // First: copy sections.\r | |
650 | //\r | |
651 | for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {\r | |
652 | Elf_Shdr *Shdr = GetShdrByIndex(Idx);\r | |
653 | if ((*Filter)(Shdr)) {\r | |
654 | switch (Shdr->sh_type) {\r | |
655 | case SHT_PROGBITS:\r | |
656 | /* Copy. */\r | |
657 | memcpy(mCoffFile + mCoffSectionsOffset[Idx],\r | |
658 | (UINT8*)mEhdr + Shdr->sh_offset,\r | |
659 | Shdr->sh_size);\r | |
660 | break;\r | |
661 | \r | |
662 | case SHT_NOBITS:\r | |
663 | memset(mCoffFile + mCoffSectionsOffset[Idx], 0, Shdr->sh_size);\r | |
664 | break;\r | |
665 | \r | |
666 | default:\r | |
667 | //\r | |
668 | // Ignore for unkown section type.\r | |
669 | //\r | |
670 | VerboseMsg ("%s unknown section type %x. We directly copy this section into Coff file", mInImageName, (unsigned)Shdr->sh_type);\r | |
671 | break;\r | |
672 | }\r | |
673 | }\r | |
674 | }\r | |
675 | \r | |
676 | //\r | |
677 | // Second: apply relocations.\r | |
678 | //\r | |
679 | for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {\r | |
680 | //\r | |
681 | // Determine if this is a relocation section.\r | |
682 | //\r | |
683 | Elf_Shdr *RelShdr = GetShdrByIndex(Idx);\r | |
684 | if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {\r | |
685 | continue;\r | |
686 | }\r | |
687 | \r | |
688 | //\r | |
689 | // Relocation section found. Now extract section information that the relocations\r | |
690 | // apply to in the ELF data and the new COFF data.\r | |
691 | //\r | |
692 | SecShdr = GetShdrByIndex(RelShdr->sh_info);\r | |
693 | SecOffset = mCoffSectionsOffset[RelShdr->sh_info];\r | |
694 | \r | |
695 | //\r | |
696 | // Only process relocations for the current filter type.\r | |
697 | //\r | |
698 | if (RelShdr->sh_type == SHT_REL && (*Filter)(SecShdr)) {\r | |
699 | UINT32 RelOffset;\r | |
700 | \r | |
701 | //\r | |
702 | // Determine the symbol table referenced by the relocation data.\r | |
703 | //\r | |
704 | Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link);\r | |
705 | UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;\r | |
706 | \r | |
707 | //\r | |
708 | // Process all relocation entries for this section.\r | |
709 | //\r | |
710 | for (RelOffset = 0; RelOffset < RelShdr->sh_size; RelOffset += RelShdr->sh_entsize) {\r | |
711 | //\r | |
712 | // Set pointer to relocation entry\r | |
713 | //\r | |
714 | Elf_Rel *Rel = (Elf_Rel *)((UINT8*)mEhdr + RelShdr->sh_offset + RelOffset);\r | |
715 | \r | |
716 | //\r | |
717 | // Set pointer to symbol table entry associated with the relocation entry.\r | |
718 | //\r | |
719 | Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);\r | |
720 | \r | |
721 | Elf_Shdr *SymShdr;\r | |
722 | UINT8 *Targ;\r | |
723 | UINT16 Address;\r | |
724 | \r | |
725 | //\r | |
726 | // Check section header index found in symbol table and get the section \r | |
727 | // header location.\r | |
728 | //\r | |
729 | if (Sym->st_shndx == SHN_UNDEF\r | |
621bb723 ML |
730 | || Sym->st_shndx >= mEhdr->e_shnum) {\r |
731 | const UINT8 *SymName = GetSymName(Sym);\r | |
732 | if (SymName == NULL) {\r | |
733 | SymName = (const UINT8 *)"<unknown>";\r | |
734 | }\r | |
735 | \r | |
736 | Error (NULL, 0, 3000, "Invalid",\r | |
ea3e924a | 737 | "%s: Bad definition for symbol '%s'@%#x or unsupported symbol type. "\r |
621bb723 ML |
738 | "For example, absolute and undefined symbols are not supported.",\r |
739 | mInImageName, SymName, Sym->st_value);\r | |
740 | \r | |
741 | exit(EXIT_FAILURE);\r | |
f51461c8 LG |
742 | }\r |
743 | SymShdr = GetShdrByIndex(Sym->st_shndx);\r | |
744 | \r | |
745 | //\r | |
746 | // Convert the relocation data to a pointer into the coff file.\r | |
747 | //\r | |
748 | // Note: \r | |
749 | // r_offset is the virtual address of the storage unit to be relocated.\r | |
750 | // sh_addr is the virtual address for the base of the section.\r | |
751 | //\r | |
752 | Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr);\r | |
753 | \r | |
754 | //\r | |
755 | // Determine how to handle each relocation type based on the machine type.\r | |
756 | //\r | |
757 | if (mEhdr->e_machine == EM_386) {\r | |
758 | switch (ELF_R_TYPE(Rel->r_info)) {\r | |
759 | case R_386_NONE:\r | |
760 | break;\r | |
761 | case R_386_32:\r | |
762 | //\r | |
763 | // Absolute relocation.\r | |
764 | // Converts Targ from a absolute virtual address to the absolute\r | |
765 | // COFF address.\r | |
766 | //\r | |
767 | *(UINT32 *)Targ = *(UINT32 *)Targ - SymShdr->sh_addr\r | |
768 | + mCoffSectionsOffset[Sym->st_shndx];\r | |
769 | break;\r | |
770 | case R_386_PC32:\r | |
771 | //\r | |
772 | // Relative relocation: Symbol - Ip + Addend\r | |
773 | //\r | |
774 | *(UINT32 *)Targ = *(UINT32 *)Targ\r | |
775 | + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr)\r | |
776 | - (SecOffset - SecShdr->sh_addr);\r | |
777 | break;\r | |
778 | default:\r | |
779 | Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_386 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));\r | |
780 | }\r | |
781 | } else if (mEhdr->e_machine == EM_ARM) {\r | |
782 | switch (ELF32_R_TYPE(Rel->r_info)) {\r | |
783 | case R_ARM_RBASE:\r | |
784 | // No relocation - no action required\r | |
785 | // break skipped\r | |
786 | \r | |
787 | case R_ARM_PC24:\r | |
31643611 | 788 | case R_ARM_REL32:\r |
f51461c8 LG |
789 | case R_ARM_XPC25:\r |
790 | case R_ARM_THM_PC22:\r | |
791 | case R_ARM_THM_JUMP19:\r | |
792 | case R_ARM_CALL:\r | |
793 | case R_ARM_JMP24:\r | |
794 | case R_ARM_THM_JUMP24: \r | |
795 | case R_ARM_PREL31: \r | |
796 | case R_ARM_MOVW_PREL_NC: \r | |
797 | case R_ARM_MOVT_PREL:\r | |
798 | case R_ARM_THM_MOVW_PREL_NC:\r | |
799 | case R_ARM_THM_MOVT_PREL:\r | |
800 | case R_ARM_THM_JMP6:\r | |
801 | case R_ARM_THM_ALU_PREL_11_0:\r | |
802 | case R_ARM_THM_PC12:\r | |
803 | case R_ARM_REL32_NOI:\r | |
804 | case R_ARM_ALU_PC_G0_NC:\r | |
805 | case R_ARM_ALU_PC_G0:\r | |
806 | case R_ARM_ALU_PC_G1_NC:\r | |
807 | case R_ARM_ALU_PC_G1:\r | |
808 | case R_ARM_ALU_PC_G2:\r | |
809 | case R_ARM_LDR_PC_G1:\r | |
810 | case R_ARM_LDR_PC_G2:\r | |
811 | case R_ARM_LDRS_PC_G0:\r | |
812 | case R_ARM_LDRS_PC_G1:\r | |
813 | case R_ARM_LDRS_PC_G2:\r | |
814 | case R_ARM_LDC_PC_G0:\r | |
815 | case R_ARM_LDC_PC_G1:\r | |
816 | case R_ARM_LDC_PC_G2:\r | |
817 | case R_ARM_GOT_PREL:\r | |
818 | case R_ARM_THM_JUMP11:\r | |
819 | case R_ARM_THM_JUMP8:\r | |
820 | case R_ARM_TLS_GD32:\r | |
821 | case R_ARM_TLS_LDM32:\r | |
822 | case R_ARM_TLS_IE32:\r | |
823 | // Thease are all PC-relative relocations and don't require modification\r | |
824 | // GCC does not seem to have the concept of a application that just needs to get relocated.\r | |
825 | break;\r | |
826 | \r | |
827 | case R_ARM_THM_MOVW_ABS_NC:\r | |
828 | // MOVW is only lower 16-bits of the addres\r | |
829 | Address = (UINT16)(Sym->st_value - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);\r | |
830 | ThumbMovtImmediatePatch ((UINT16 *)Targ, Address);\r | |
831 | break;\r | |
832 | \r | |
833 | case R_ARM_THM_MOVT_ABS:\r | |
834 | // MOVT is only upper 16-bits of the addres\r | |
835 | Address = (UINT16)((Sym->st_value - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]) >> 16);\r | |
836 | ThumbMovtImmediatePatch ((UINT16 *)Targ, Address);\r | |
837 | break;\r | |
838 | \r | |
839 | case R_ARM_ABS32:\r | |
840 | case R_ARM_RABS32:\r | |
841 | //\r | |
842 | // Absolute relocation.\r | |
843 | //\r | |
844 | *(UINT32 *)Targ = *(UINT32 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];\r | |
845 | break;\r | |
846 | \r | |
847 | default:\r | |
848 | Error (NULL, 0, 3000, "Invalid", "WriteSections (): %s unsupported ELF EM_ARM relocation 0x%x.", mInImageName, (unsigned) ELF32_R_TYPE(Rel->r_info));\r | |
849 | }\r | |
850 | }\r | |
851 | }\r | |
852 | }\r | |
853 | }\r | |
854 | \r | |
855 | return TRUE;\r | |
856 | }\r | |
857 | \r | |
858 | UINTN gMovwOffset = 0;\r | |
859 | \r | |
860 | STATIC\r | |
861 | VOID\r | |
862 | WriteRelocations32 (\r | |
863 | VOID\r | |
864 | )\r | |
865 | {\r | |
866 | UINT32 Index;\r | |
867 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r | |
868 | EFI_IMAGE_DATA_DIRECTORY *Dir;\r | |
869 | BOOLEAN FoundRelocations;\r | |
870 | Elf_Dyn *Dyn;\r | |
871 | Elf_Rel *Rel;\r | |
872 | UINTN RelElementSize;\r | |
873 | UINTN RelSize;\r | |
874 | UINTN RelOffset;\r | |
875 | UINTN K;\r | |
f51461c8 | 876 | Elf32_Phdr *DynamicSegment;\r |
f51461c8 LG |
877 | \r |
878 | for (Index = 0, FoundRelocations = FALSE; Index < mEhdr->e_shnum; Index++) {\r | |
879 | Elf_Shdr *RelShdr = GetShdrByIndex(Index);\r | |
880 | if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) {\r | |
881 | Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info);\r | |
882 | if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) {\r | |
883 | UINT32 RelIdx;\r | |
884 | \r | |
885 | FoundRelocations = TRUE;\r | |
886 | for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) {\r | |
5aec6991 | 887 | Rel = (Elf_Rel *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);\r |
f51461c8 LG |
888 | \r |
889 | if (mEhdr->e_machine == EM_386) { \r | |
890 | switch (ELF_R_TYPE(Rel->r_info)) {\r | |
891 | case R_386_NONE:\r | |
892 | case R_386_PC32:\r | |
893 | //\r | |
894 | // No fixup entry required.\r | |
895 | //\r | |
896 | break;\r | |
897 | case R_386_32:\r | |
898 | //\r | |
899 | // Creates a relative relocation entry from the absolute entry.\r | |
900 | //\r | |
901 | CoffAddFixup(mCoffSectionsOffset[RelShdr->sh_info]\r | |
902 | + (Rel->r_offset - SecShdr->sh_addr),\r | |
903 | EFI_IMAGE_REL_BASED_HIGHLOW);\r | |
904 | break;\r | |
905 | default:\r | |
906 | Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_386 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));\r | |
907 | }\r | |
908 | } else if (mEhdr->e_machine == EM_ARM) {\r | |
909 | switch (ELF32_R_TYPE(Rel->r_info)) {\r | |
910 | case R_ARM_RBASE:\r | |
911 | // No relocation - no action required\r | |
912 | // break skipped\r | |
913 | \r | |
914 | case R_ARM_PC24:\r | |
31643611 | 915 | case R_ARM_REL32:\r |
f51461c8 LG |
916 | case R_ARM_XPC25:\r |
917 | case R_ARM_THM_PC22:\r | |
918 | case R_ARM_THM_JUMP19:\r | |
919 | case R_ARM_CALL:\r | |
920 | case R_ARM_JMP24:\r | |
921 | case R_ARM_THM_JUMP24: \r | |
922 | case R_ARM_PREL31: \r | |
923 | case R_ARM_MOVW_PREL_NC: \r | |
924 | case R_ARM_MOVT_PREL:\r | |
925 | case R_ARM_THM_MOVW_PREL_NC:\r | |
926 | case R_ARM_THM_MOVT_PREL:\r | |
927 | case R_ARM_THM_JMP6:\r | |
928 | case R_ARM_THM_ALU_PREL_11_0:\r | |
929 | case R_ARM_THM_PC12:\r | |
930 | case R_ARM_REL32_NOI:\r | |
931 | case R_ARM_ALU_PC_G0_NC:\r | |
932 | case R_ARM_ALU_PC_G0:\r | |
933 | case R_ARM_ALU_PC_G1_NC:\r | |
934 | case R_ARM_ALU_PC_G1:\r | |
935 | case R_ARM_ALU_PC_G2:\r | |
936 | case R_ARM_LDR_PC_G1:\r | |
937 | case R_ARM_LDR_PC_G2:\r | |
938 | case R_ARM_LDRS_PC_G0:\r | |
939 | case R_ARM_LDRS_PC_G1:\r | |
940 | case R_ARM_LDRS_PC_G2:\r | |
941 | case R_ARM_LDC_PC_G0:\r | |
942 | case R_ARM_LDC_PC_G1:\r | |
943 | case R_ARM_LDC_PC_G2:\r | |
944 | case R_ARM_GOT_PREL:\r | |
945 | case R_ARM_THM_JUMP11:\r | |
946 | case R_ARM_THM_JUMP8:\r | |
947 | case R_ARM_TLS_GD32:\r | |
948 | case R_ARM_TLS_LDM32:\r | |
949 | case R_ARM_TLS_IE32:\r | |
950 | // Thease are all PC-relative relocations and don't require modification\r | |
951 | break;\r | |
952 | \r | |
953 | case R_ARM_THM_MOVW_ABS_NC:\r | |
954 | CoffAddFixup (\r | |
955 | mCoffSectionsOffset[RelShdr->sh_info]\r | |
956 | + (Rel->r_offset - SecShdr->sh_addr),\r | |
957 | EFI_IMAGE_REL_BASED_ARM_MOV32T\r | |
958 | );\r | |
959 | \r | |
960 | // PE/COFF treats MOVW/MOVT relocation as single 64-bit instruction\r | |
961 | // Track this address so we can log an error for unsupported sequence of MOVW/MOVT\r | |
962 | gMovwOffset = mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr);\r | |
963 | break;\r | |
964 | \r | |
965 | case R_ARM_THM_MOVT_ABS:\r | |
966 | if ((gMovwOffset + 4) != (mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr))) {\r | |
967 | Error (NULL, 0, 3000, "Not Supported", "PE/COFF requires MOVW+MOVT instruction sequence %x +4 != %x.", gMovwOffset, mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr));\r | |
968 | }\r | |
969 | break;\r | |
970 | \r | |
971 | case R_ARM_ABS32:\r | |
972 | case R_ARM_RABS32:\r | |
973 | CoffAddFixup (\r | |
974 | mCoffSectionsOffset[RelShdr->sh_info]\r | |
975 | + (Rel->r_offset - SecShdr->sh_addr),\r | |
976 | EFI_IMAGE_REL_BASED_HIGHLOW\r | |
977 | );\r | |
978 | break;\r | |
979 | \r | |
980 | default:\r | |
981 | Error (NULL, 0, 3000, "Invalid", "WriteRelocations(): %s unsupported ELF EM_ARM relocation 0x%x.", mInImageName, (unsigned) ELF32_R_TYPE(Rel->r_info));\r | |
982 | }\r | |
983 | } else {\r | |
984 | Error (NULL, 0, 3000, "Not Supported", "This tool does not support relocations for ELF with e_machine %u (processor type).", (unsigned) mEhdr->e_machine);\r | |
985 | }\r | |
986 | }\r | |
987 | }\r | |
988 | }\r | |
989 | }\r | |
990 | \r | |
991 | if (!FoundRelocations && (mEhdr->e_machine == EM_ARM)) {\r | |
992 | /* Try again, but look for PT_DYNAMIC instead of SHT_REL */\r | |
993 | \r | |
994 | for (Index = 0; Index < mEhdr->e_phnum; Index++) {\r | |
995 | RelElementSize = 0;\r | |
996 | RelSize = 0;\r | |
997 | RelOffset = 0;\r | |
998 | \r | |
999 | DynamicSegment = GetPhdrByIndex (Index);\r | |
1000 | \r | |
1001 | if (DynamicSegment->p_type == PT_DYNAMIC) {\r | |
1002 | Dyn = (Elf32_Dyn *) ((UINT8 *)mEhdr + DynamicSegment->p_offset);\r | |
1003 | \r | |
1004 | while (Dyn->d_tag != DT_NULL) {\r | |
1005 | switch (Dyn->d_tag) {\r | |
1006 | case DT_REL:\r | |
1007 | RelOffset = Dyn->d_un.d_val;\r | |
1008 | break;\r | |
1009 | \r | |
1010 | case DT_RELSZ:\r | |
1011 | RelSize = Dyn->d_un.d_val;\r | |
1012 | break;\r | |
1013 | \r | |
1014 | case DT_RELENT:\r | |
1015 | RelElementSize = Dyn->d_un.d_val;\r | |
1016 | break;\r | |
1017 | \r | |
1018 | default:\r | |
1019 | break;\r | |
1020 | }\r | |
1021 | Dyn++;\r | |
1022 | }\r | |
1023 | if (( RelOffset == 0 ) || ( RelSize == 0 ) || ( RelElementSize == 0 )) {\r | |
1024 | Error (NULL, 0, 3000, "Invalid", "%s bad ARM dynamic relocations.", mInImageName);\r | |
1025 | }\r | |
1026 | \r | |
088dc245 AB |
1027 | for (Index = 0; Index < mEhdr->e_shnum; Index++) {\r |
1028 | Elf_Shdr *shdr = GetShdrByIndex(Index);\r | |
1029 | \r | |
1030 | //\r | |
1031 | // The PT_DYNAMIC section contains DT_REL relocations whose r_offset\r | |
1032 | // field is relative to the base of a segment (or the entire image),\r | |
1033 | // and not to the base of an ELF input section as is the case for\r | |
1034 | // SHT_REL sections. This means that we cannot fix up such relocations\r | |
1035 | // unless we cross-reference ELF sections and segments, considering\r | |
1036 | // that the output placement recorded in mCoffSectionsOffset[] is\r | |
1037 | // section based, not segment based.\r | |
1038 | //\r | |
1039 | // Fortunately, there is a simple way around this: we require that the\r | |
1040 | // in-memory layout of the ELF and PE/COFF versions of the binary is\r | |
1041 | // identical. That way, r_offset will retain its validity as a PE/COFF\r | |
1042 | // image offset, and we can record it in the COFF fixup table\r | |
1043 | // unmodified.\r | |
1044 | //\r | |
1045 | if (shdr->sh_addr != mCoffSectionsOffset[Index]) {\r | |
1046 | Error (NULL, 0, 3000,\r | |
1047 | "Invalid", "%s: PT_DYNAMIC relocations require identical ELF and PE/COFF section offsets.",\r | |
1048 | mInImageName);\r | |
1049 | }\r | |
1050 | }\r | |
1051 | \r | |
f51461c8 LG |
1052 | for (K = 0; K < RelSize; K += RelElementSize) {\r |
1053 | \r | |
1054 | if (DynamicSegment->p_paddr == 0) {\r | |
1055 | // Older versions of the ARM ELF (SWS ESPC 0003 B-02) specification define DT_REL\r | |
1056 | // as an offset in the dynamic segment. p_paddr is defined to be zero for ARM tools\r | |
1057 | Rel = (Elf32_Rel *) ((UINT8 *) mEhdr + DynamicSegment->p_offset + RelOffset + K);\r | |
1058 | } else {\r | |
1059 | // This is how it reads in the generic ELF specification\r | |
1060 | Rel = (Elf32_Rel *) ((UINT8 *) mEhdr + RelOffset + K);\r | |
1061 | }\r | |
1062 | \r | |
1063 | switch (ELF32_R_TYPE (Rel->r_info)) {\r | |
1064 | case R_ARM_RBASE:\r | |
1065 | break;\r | |
1066 | \r | |
1067 | case R_ARM_RABS32:\r | |
088dc245 | 1068 | CoffAddFixup (Rel->r_offset, EFI_IMAGE_REL_BASED_HIGHLOW);\r |
f51461c8 LG |
1069 | break;\r |
1070 | \r | |
1071 | default:\r | |
1072 | Error (NULL, 0, 3000, "Invalid", "%s bad ARM dynamic relocations, unkown type %d.", mInImageName, ELF32_R_TYPE (Rel->r_info));\r | |
1073 | break;\r | |
1074 | }\r | |
1075 | }\r | |
1076 | break;\r | |
1077 | }\r | |
1078 | }\r | |
1079 | }\r | |
1080 | \r | |
1081 | //\r | |
1082 | // Pad by adding empty entries.\r | |
1083 | //\r | |
1084 | while (mCoffOffset & (mCoffAlignment - 1)) {\r | |
1085 | CoffAddFixupEntry(0);\r | |
1086 | }\r | |
1087 | \r | |
1088 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);\r | |
1089 | Dir = &NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];\r | |
1090 | Dir->Size = mCoffOffset - mRelocOffset;\r | |
1091 | if (Dir->Size == 0) {\r | |
1092 | // If no relocations, null out the directory entry and don't add the .reloc section\r | |
1093 | Dir->VirtualAddress = 0;\r | |
1094 | NtHdr->Pe32.FileHeader.NumberOfSections--;\r | |
1095 | } else {\r | |
1096 | Dir->VirtualAddress = mRelocOffset;\r | |
1097 | CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset,\r | |
1098 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA\r | |
1099 | | EFI_IMAGE_SCN_MEM_DISCARDABLE\r | |
1100 | | EFI_IMAGE_SCN_MEM_READ);\r | |
1101 | }\r | |
1102 | \r | |
1103 | }\r | |
1104 | \r | |
1105 | STATIC\r | |
1106 | VOID\r | |
1107 | WriteDebug32 (\r | |
1108 | VOID\r | |
1109 | )\r | |
1110 | {\r | |
1111 | UINT32 Len;\r | |
f51461c8 LG |
1112 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r |
1113 | EFI_IMAGE_DATA_DIRECTORY *DataDir;\r | |
1114 | EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *Dir;\r | |
1115 | EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10;\r | |
1116 | \r | |
1117 | Len = strlen(mInImageName) + 1;\r | |
f51461c8 | 1118 | \r |
0192b71c | 1119 | Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + mDebugOffset);\r |
f51461c8 LG |
1120 | Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW;\r |
1121 | Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len;\r | |
0192b71c AB |
1122 | Dir->RVA = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r |
1123 | Dir->FileOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r | |
f51461c8 LG |
1124 | \r |
1125 | Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1);\r | |
1126 | Nb10->Signature = CODEVIEW_SIGNATURE_NB10;\r | |
1127 | strcpy ((char *)(Nb10 + 1), mInImageName);\r | |
1128 | \r | |
1129 | \r | |
1130 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);\r | |
1131 | DataDir = &NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG];\r | |
0192b71c AB |
1132 | DataDir->VirtualAddress = mDebugOffset;\r |
1133 | DataDir->Size = Dir->SizeOfData + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r | |
f51461c8 LG |
1134 | }\r |
1135 | \r | |
1136 | STATIC\r | |
1137 | VOID\r | |
1138 | SetImageSize32 (\r | |
1139 | VOID\r | |
1140 | )\r | |
1141 | {\r | |
1142 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r | |
1143 | \r | |
1144 | //\r | |
1145 | // Set image size\r | |
1146 | //\r | |
1147 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);\r | |
1148 | NtHdr->Pe32.OptionalHeader.SizeOfImage = mCoffOffset;\r | |
1149 | }\r | |
1150 | \r | |
1151 | STATIC\r | |
1152 | VOID\r | |
1153 | CleanUp32 (\r | |
1154 | VOID\r | |
1155 | )\r | |
1156 | {\r | |
1157 | if (mCoffSectionsOffset != NULL) {\r | |
1158 | free (mCoffSectionsOffset);\r | |
1159 | }\r | |
1160 | }\r | |
1161 | \r | |
1162 | \r |