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1 | /** @file\r | |
2 | Elf32 Convert solution\r | |
3 | \r | |
4 | Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.<BR>\r | |
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 | |
24 | #include <stdio.h>\r | |
25 | #include <stdlib.h>\r | |
26 | #include <string.h>\r | |
27 | #include <time.h>\r | |
28 | #include <ctype.h>\r | |
29 | \r | |
30 | #include <Common/UefiBaseTypes.h>\r | |
31 | #include <IndustryStandard/PeImage.h>\r | |
32 | \r | |
33 | #include "PeCoffLib.h"\r | |
34 | #include "EfiUtilityMsgs.h"\r | |
35 | \r | |
36 | #include "GenFw.h"\r | |
37 | #include "ElfConvert.h"\r | |
38 | #include "Elf32Convert.h"\r | |
39 | \r | |
40 | STATIC\r | |
41 | VOID\r | |
42 | ScanSections32 (\r | |
43 | VOID\r | |
44 | );\r | |
45 | \r | |
46 | STATIC\r | |
47 | BOOLEAN\r | |
48 | WriteSections32 (\r | |
49 | SECTION_FILTER_TYPES FilterType\r | |
50 | );\r | |
51 | \r | |
52 | STATIC\r | |
53 | VOID\r | |
54 | WriteRelocations32 (\r | |
55 | VOID\r | |
56 | );\r | |
57 | \r | |
58 | STATIC\r | |
59 | VOID\r | |
60 | WriteDebug32 (\r | |
61 | VOID\r | |
62 | );\r | |
63 | \r | |
64 | STATIC\r | |
65 | VOID\r | |
66 | SetImageSize32 (\r | |
67 | VOID\r | |
68 | );\r | |
69 | \r | |
70 | STATIC\r | |
71 | VOID\r | |
72 | CleanUp32 (\r | |
73 | VOID\r | |
74 | );\r | |
75 | \r | |
76 | //\r | |
77 | // Rename ELF32 strucutres to common names to help when porting to ELF64.\r | |
78 | //\r | |
79 | typedef Elf32_Shdr Elf_Shdr;\r | |
80 | typedef Elf32_Ehdr Elf_Ehdr;\r | |
81 | typedef Elf32_Rel Elf_Rel;\r | |
82 | typedef Elf32_Sym Elf_Sym;\r | |
83 | typedef Elf32_Phdr Elf_Phdr;\r | |
84 | typedef Elf32_Dyn Elf_Dyn;\r | |
85 | #define ELFCLASS ELFCLASS32\r | |
86 | #define ELF_R_TYPE(r) ELF32_R_TYPE(r)\r | |
87 | #define ELF_R_SYM(r) ELF32_R_SYM(r)\r | |
88 | \r | |
89 | //\r | |
90 | // Well known ELF structures.\r | |
91 | //\r | |
92 | STATIC Elf_Ehdr *mEhdr;\r | |
93 | STATIC Elf_Shdr *mShdrBase;\r | |
94 | STATIC Elf_Phdr *mPhdrBase;\r | |
95 | \r | |
96 | //\r | |
97 | // Coff information\r | |
98 | //\r | |
99 | STATIC UINT32 mCoffAlignment = 0x20;\r | |
100 | \r | |
101 | //\r | |
102 | // PE section alignment.\r | |
103 | //\r | |
104 | STATIC const UINT16 mCoffNbrSections = 4;\r | |
105 | \r | |
106 | //\r | |
107 | // ELF sections to offset in Coff file.\r | |
108 | //\r | |
109 | STATIC UINT32 *mCoffSectionsOffset = NULL;\r | |
110 | \r | |
111 | //\r | |
112 | // Offsets in COFF file\r | |
113 | //\r | |
114 | STATIC UINT32 mNtHdrOffset;\r | |
115 | STATIC UINT32 mTextOffset;\r | |
116 | STATIC UINT32 mDataOffset;\r | |
117 | STATIC UINT32 mHiiRsrcOffset;\r | |
118 | STATIC UINT32 mRelocOffset;\r | |
119 | STATIC UINT32 mDebugOffset;\r | |
120 | \r | |
121 | //\r | |
122 | // Initialization Function\r | |
123 | //\r | |
124 | BOOLEAN\r | |
125 | InitializeElf32 (\r | |
126 | UINT8 *FileBuffer,\r | |
127 | ELF_FUNCTION_TABLE *ElfFunctions\r | |
128 | )\r | |
129 | {\r | |
130 | //\r | |
131 | // Initialize data pointer and structures.\r | |
132 | //\r | |
133 | mEhdr = (Elf_Ehdr*) FileBuffer; \r | |
134 | \r | |
135 | //\r | |
136 | // Check the ELF32 specific header information.\r | |
137 | //\r | |
138 | if (mEhdr->e_ident[EI_CLASS] != ELFCLASS32) {\r | |
139 | Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS32");\r | |
140 | return FALSE;\r | |
141 | }\r | |
142 | if (mEhdr->e_ident[EI_DATA] != ELFDATA2LSB) {\r | |
143 | Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFDATA2LSB");\r | |
144 | return FALSE;\r | |
145 | } \r | |
146 | if ((mEhdr->e_type != ET_EXEC) && (mEhdr->e_type != ET_DYN)) {\r | |
147 | Error (NULL, 0, 3000, "Unsupported", "ELF e_type not ET_EXEC or ET_DYN");\r | |
148 | return FALSE;\r | |
149 | }\r | |
150 | if (!((mEhdr->e_machine == EM_386) || (mEhdr->e_machine == EM_ARM))) { \r | |
151 | Error (NULL, 0, 3000, "Unsupported", "ELF e_machine not EM_386 or EM_ARM");\r | |
152 | return FALSE;\r | |
153 | }\r | |
154 | if (mEhdr->e_version != EV_CURRENT) {\r | |
155 | Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT);\r | |
156 | return FALSE;\r | |
157 | }\r | |
158 | \r | |
159 | //\r | |
160 | // Update section header pointers\r | |
161 | //\r | |
162 | mShdrBase = (Elf_Shdr *)((UINT8 *)mEhdr + mEhdr->e_shoff);\r | |
163 | mPhdrBase = (Elf_Phdr *)((UINT8 *)mEhdr + mEhdr->e_phoff);\r | |
164 | \r | |
165 | //\r | |
166 | // Create COFF Section offset buffer and zero.\r | |
167 | //\r | |
168 | mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32));\r | |
169 | if (mCoffSectionsOffset == NULL) {\r | |
170 | Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");\r | |
171 | return FALSE;\r | |
172 | }\r | |
173 | memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32));\r | |
174 | \r | |
175 | //\r | |
176 | // Fill in function pointers.\r | |
177 | //\r | |
178 | ElfFunctions->ScanSections = ScanSections32;\r | |
179 | ElfFunctions->WriteSections = WriteSections32;\r | |
180 | ElfFunctions->WriteRelocations = WriteRelocations32;\r | |
181 | ElfFunctions->WriteDebug = WriteDebug32;\r | |
182 | ElfFunctions->SetImageSize = SetImageSize32;\r | |
183 | ElfFunctions->CleanUp = CleanUp32;\r | |
184 | \r | |
185 | return TRUE;\r | |
186 | }\r | |
187 | \r | |
188 | \r | |
189 | //\r | |
190 | // Header by Index functions\r | |
191 | //\r | |
192 | STATIC\r | |
193 | Elf_Shdr*\r | |
194 | GetShdrByIndex (\r | |
195 | UINT32 Num\r | |
196 | )\r | |
197 | {\r | |
198 | if (Num >= mEhdr->e_shnum) {\r | |
199 | Error (NULL, 0, 3000, "Invalid", "GetShdrByIndex: Index %u is too high.", Num);\r | |
200 | exit(EXIT_FAILURE);\r | |
201 | }\r | |
202 | \r | |
203 | return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize);\r | |
204 | }\r | |
205 | \r | |
206 | STATIC\r | |
207 | Elf_Phdr*\r | |
208 | GetPhdrByIndex (\r | |
209 | UINT32 num\r | |
210 | )\r | |
211 | {\r | |
212 | if (num >= mEhdr->e_phnum) {\r | |
213 | Error (NULL, 0, 3000, "Invalid", "GetPhdrByIndex: Index %u is too high.", num);\r | |
214 | exit(EXIT_FAILURE);\r | |
215 | }\r | |
216 | \r | |
217 | return (Elf_Phdr *)((UINT8*)mPhdrBase + num * mEhdr->e_phentsize);\r | |
218 | }\r | |
219 | \r | |
220 | STATIC\r | |
221 | UINT32\r | |
222 | CoffAlign (\r | |
223 | UINT32 Offset\r | |
224 | )\r | |
225 | {\r | |
226 | return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1);\r | |
227 | }\r | |
228 | \r | |
229 | STATIC\r | |
230 | UINT32\r | |
231 | DebugRvaAlign (\r | |
232 | UINT32 Offset\r | |
233 | )\r | |
234 | {\r | |
235 | return (Offset + 3) & ~3;\r | |
236 | }\r | |
237 | \r | |
238 | //\r | |
239 | // filter functions\r | |
240 | //\r | |
241 | STATIC\r | |
242 | BOOLEAN\r | |
243 | IsTextShdr (\r | |
244 | Elf_Shdr *Shdr\r | |
245 | )\r | |
246 | {\r | |
247 | return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC);\r | |
248 | }\r | |
249 | \r | |
250 | STATIC\r | |
251 | BOOLEAN\r | |
252 | IsHiiRsrcShdr (\r | |
253 | Elf_Shdr *Shdr\r | |
254 | )\r | |
255 | {\r | |
256 | Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);\r | |
257 | \r | |
258 | return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0);\r | |
259 | }\r | |
260 | \r | |
261 | STATIC\r | |
262 | BOOLEAN\r | |
263 | IsDataShdr (\r | |
264 | Elf_Shdr *Shdr\r | |
265 | )\r | |
266 | {\r | |
267 | if (IsHiiRsrcShdr(Shdr)) {\r | |
268 | return FALSE;\r | |
269 | }\r | |
270 | return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE);\r | |
271 | }\r | |
272 | \r | |
273 | STATIC\r | |
274 | BOOLEAN\r | |
275 | IsStrtabShdr (\r | |
276 | Elf_Shdr *Shdr\r | |
277 | )\r | |
278 | {\r | |
279 | Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);\r | |
280 | \r | |
281 | return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_STRTAB_SECTION_NAME) == 0);\r | |
282 | }\r | |
283 | \r | |
284 | STATIC\r | |
285 | Elf_Shdr *\r | |
286 | FindStrtabShdr (\r | |
287 | VOID\r | |
288 | )\r | |
289 | {\r | |
290 | UINT32 i;\r | |
291 | for (i = 0; i < mEhdr->e_shnum; i++) {\r | |
292 | Elf_Shdr *shdr = GetShdrByIndex(i);\r | |
293 | if (IsStrtabShdr(shdr)) {\r | |
294 | return shdr;\r | |
295 | }\r | |
296 | }\r | |
297 | return NULL;\r | |
298 | }\r | |
299 | \r | |
300 | STATIC\r | |
301 | const UINT8 *\r | |
302 | GetSymName (\r | |
303 | Elf_Sym *Sym\r | |
304 | )\r | |
305 | {\r | |
306 | Elf_Shdr *StrtabShdr;\r | |
307 | UINT8 *StrtabContents;\r | |
308 | BOOLEAN foundEnd;\r | |
309 | UINT32 i;\r | |
310 | \r | |
311 | if (Sym->st_name == 0) {\r | |
312 | return NULL;\r | |
313 | }\r | |
314 | \r | |
315 | StrtabShdr = FindStrtabShdr();\r | |
316 | if (StrtabShdr == NULL) {\r | |
317 | return NULL;\r | |
318 | }\r | |
319 | \r | |
320 | assert(Sym->st_name < StrtabShdr->sh_size);\r | |
321 | \r | |
322 | StrtabContents = (UINT8*)mEhdr + StrtabShdr->sh_offset;\r | |
323 | \r | |
324 | foundEnd = FALSE;\r | |
325 | for (i = Sym->st_name; (i < StrtabShdr->sh_size) && !foundEnd; i++) {\r | |
326 | foundEnd = (BOOLEAN)(StrtabContents[i] == 0);\r | |
327 | }\r | |
328 | assert(foundEnd);\r | |
329 | \r | |
330 | return StrtabContents + Sym->st_name;\r | |
331 | }\r | |
332 | \r | |
333 | //\r | |
334 | // Elf functions interface implementation\r | |
335 | //\r | |
336 | \r | |
337 | STATIC\r | |
338 | VOID\r | |
339 | ScanSections32 (\r | |
340 | VOID\r | |
341 | )\r | |
342 | {\r | |
343 | UINT32 i;\r | |
344 | EFI_IMAGE_DOS_HEADER *DosHdr;\r | |
345 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r | |
346 | UINT32 CoffEntry;\r | |
347 | UINT32 SectionCount;\r | |
348 | BOOLEAN FoundSection;\r | |
349 | \r | |
350 | CoffEntry = 0;\r | |
351 | mCoffOffset = 0;\r | |
352 | \r | |
353 | //\r | |
354 | // Coff file start with a DOS header.\r | |
355 | //\r | |
356 | mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40;\r | |
357 | mNtHdrOffset = mCoffOffset;\r | |
358 | switch (mEhdr->e_machine) {\r | |
359 | case EM_386:\r | |
360 | case EM_ARM:\r | |
361 | mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS32);\r | |
362 | break;\r | |
363 | default:\r | |
364 | VerboseMsg ("%s unknown e_machine type. Assume IA-32", (UINTN)mEhdr->e_machine);\r | |
365 | mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS32);\r | |
366 | break;\r | |
367 | }\r | |
368 | \r | |
369 | mTableOffset = mCoffOffset;\r | |
370 | mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER);\r | |
371 | \r | |
372 | //\r | |
373 | // Set mCoffAlignment to the maximum alignment of the input sections\r | |
374 | // we care about\r | |
375 | //\r | |
376 | for (i = 0; i < mEhdr->e_shnum; i++) {\r | |
377 | Elf_Shdr *shdr = GetShdrByIndex(i);\r | |
378 | if (shdr->sh_addralign <= mCoffAlignment) {\r | |
379 | continue;\r | |
380 | }\r | |
381 | if (IsTextShdr(shdr) || IsDataShdr(shdr) || IsHiiRsrcShdr(shdr)) {\r | |
382 | mCoffAlignment = (UINT32)shdr->sh_addralign;\r | |
383 | }\r | |
384 | }\r | |
385 | \r | |
386 | //\r | |
387 | // Move the PE/COFF header right before the first section. This will help us\r | |
388 | // save space when converting to TE.\r | |
389 | //\r | |
390 | if (mCoffAlignment > mCoffOffset) {\r | |
391 | mNtHdrOffset += mCoffAlignment - mCoffOffset;\r | |
392 | mTableOffset += mCoffAlignment - mCoffOffset;\r | |
393 | mCoffOffset = mCoffAlignment;\r | |
394 | }\r | |
395 | \r | |
396 | //\r | |
397 | // First text sections.\r | |
398 | //\r | |
399 | mCoffOffset = CoffAlign(mCoffOffset);\r | |
400 | mTextOffset = mCoffOffset;\r | |
401 | FoundSection = FALSE;\r | |
402 | SectionCount = 0;\r | |
403 | for (i = 0; i < mEhdr->e_shnum; i++) {\r | |
404 | Elf_Shdr *shdr = GetShdrByIndex(i);\r | |
405 | if (IsTextShdr(shdr)) {\r | |
406 | if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {\r | |
407 | // the alignment field is valid\r | |
408 | if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {\r | |
409 | // if the section address is aligned we must align PE/COFF\r | |
410 | mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);\r | |
411 | } else {\r | |
412 | Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");\r | |
413 | }\r | |
414 | }\r | |
415 | \r | |
416 | /* Relocate entry. */\r | |
417 | if ((mEhdr->e_entry >= shdr->sh_addr) &&\r | |
418 | (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) {\r | |
419 | CoffEntry = mCoffOffset + mEhdr->e_entry - shdr->sh_addr;\r | |
420 | }\r | |
421 | \r | |
422 | //\r | |
423 | // Set mTextOffset with the offset of the first '.text' section\r | |
424 | //\r | |
425 | if (!FoundSection) {\r | |
426 | mTextOffset = mCoffOffset;\r | |
427 | FoundSection = TRUE;\r | |
428 | }\r | |
429 | \r | |
430 | mCoffSectionsOffset[i] = mCoffOffset;\r | |
431 | mCoffOffset += shdr->sh_size;\r | |
432 | SectionCount ++;\r | |
433 | }\r | |
434 | }\r | |
435 | \r | |
436 | if (!FoundSection) {\r | |
437 | Error (NULL, 0, 3000, "Invalid", "Did not find any '.text' section.");\r | |
438 | assert (FALSE);\r | |
439 | }\r | |
440 | \r | |
441 | mDebugOffset = DebugRvaAlign(mCoffOffset);\r | |
442 | mCoffOffset = CoffAlign(mCoffOffset);\r | |
443 | \r | |
444 | if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {\r | |
445 | Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 text section. Source level debug might not work correctly.", mInImageName);\r | |
446 | }\r | |
447 | \r | |
448 | //\r | |
449 | // Then data sections.\r | |
450 | //\r | |
451 | mDataOffset = mCoffOffset;\r | |
452 | FoundSection = FALSE;\r | |
453 | SectionCount = 0;\r | |
454 | for (i = 0; i < mEhdr->e_shnum; i++) {\r | |
455 | Elf_Shdr *shdr = GetShdrByIndex(i);\r | |
456 | if (IsDataShdr(shdr)) {\r | |
457 | if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {\r | |
458 | // the alignment field is valid\r | |
459 | if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {\r | |
460 | // if the section address is aligned we must align PE/COFF\r | |
461 | mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);\r | |
462 | } else {\r | |
463 | Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");\r | |
464 | }\r | |
465 | }\r | |
466 | \r | |
467 | //\r | |
468 | // Set mDataOffset with the offset of the first '.data' section\r | |
469 | //\r | |
470 | if (!FoundSection) {\r | |
471 | mDataOffset = mCoffOffset;\r | |
472 | FoundSection = TRUE;\r | |
473 | }\r | |
474 | \r | |
475 | mCoffSectionsOffset[i] = mCoffOffset;\r | |
476 | mCoffOffset += shdr->sh_size;\r | |
477 | SectionCount ++;\r | |
478 | }\r | |
479 | }\r | |
480 | \r | |
481 | if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {\r | |
482 | Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 data section. Source level debug might not work correctly.", mInImageName);\r | |
483 | }\r | |
484 | \r | |
485 | //\r | |
486 | // Make room for .debug data in .data (or .text if .data is empty) instead of\r | |
487 | // putting it in a section of its own. This is explicitly allowed by the\r | |
488 | // PE/COFF spec, and prevents bloat in the binary when using large values for\r | |
489 | // section alignment.\r | |
490 | //\r | |
491 | if (SectionCount > 0) {\r | |
492 | mDebugOffset = DebugRvaAlign(mCoffOffset);\r | |
493 | }\r | |
494 | mCoffOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +\r | |
495 | sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +\r | |
496 | strlen(mInImageName) + 1;\r | |
497 | \r | |
498 | mCoffOffset = CoffAlign(mCoffOffset);\r | |
499 | if (SectionCount == 0) {\r | |
500 | mDataOffset = mCoffOffset;\r | |
501 | }\r | |
502 | \r | |
503 | //\r | |
504 | // The HII resource sections.\r | |
505 | //\r | |
506 | mHiiRsrcOffset = mCoffOffset;\r | |
507 | for (i = 0; i < mEhdr->e_shnum; i++) {\r | |
508 | Elf_Shdr *shdr = GetShdrByIndex(i);\r | |
509 | if (IsHiiRsrcShdr(shdr)) {\r | |
510 | if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {\r | |
511 | // the alignment field is valid\r | |
512 | if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {\r | |
513 | // if the section address is aligned we must align PE/COFF\r | |
514 | mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);\r | |
515 | } else {\r | |
516 | Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");\r | |
517 | }\r | |
518 | }\r | |
519 | if (shdr->sh_size != 0) {\r | |
520 | mHiiRsrcOffset = mCoffOffset;\r | |
521 | mCoffSectionsOffset[i] = mCoffOffset;\r | |
522 | mCoffOffset += shdr->sh_size;\r | |
523 | mCoffOffset = CoffAlign(mCoffOffset);\r | |
524 | SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset);\r | |
525 | }\r | |
526 | break;\r | |
527 | }\r | |
528 | }\r | |
529 | \r | |
530 | mRelocOffset = mCoffOffset;\r | |
531 | \r | |
532 | //\r | |
533 | // Allocate base Coff file. Will be expanded later for relocations.\r | |
534 | //\r | |
535 | mCoffFile = (UINT8 *)malloc(mCoffOffset);\r | |
536 | if (mCoffFile == NULL) {\r | |
537 | Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");\r | |
538 | }\r | |
539 | assert (mCoffFile != NULL);\r | |
540 | memset(mCoffFile, 0, mCoffOffset);\r | |
541 | \r | |
542 | //\r | |
543 | // Fill headers.\r | |
544 | //\r | |
545 | DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile;\r | |
546 | DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE;\r | |
547 | DosHdr->e_lfanew = mNtHdrOffset;\r | |
548 | \r | |
549 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset);\r | |
550 | \r | |
551 | NtHdr->Pe32.Signature = EFI_IMAGE_NT_SIGNATURE;\r | |
552 | \r | |
553 | switch (mEhdr->e_machine) {\r | |
554 | case EM_386:\r | |
555 | NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_IA32;\r | |
556 | NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;\r | |
557 | break;\r | |
558 | case EM_ARM:\r | |
559 | NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_ARMT;\r | |
560 | NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;\r | |
561 | break;\r | |
562 | default:\r | |
563 | VerboseMsg ("%s unknown e_machine type %hu. Assume IA-32", mInImageName, mEhdr->e_machine);\r | |
564 | NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_IA32;\r | |
565 | NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;\r | |
566 | }\r | |
567 | \r | |
568 | NtHdr->Pe32.FileHeader.NumberOfSections = mCoffNbrSections;\r | |
569 | NtHdr->Pe32.FileHeader.TimeDateStamp = (UINT32) time(NULL);\r | |
570 | mImageTimeStamp = NtHdr->Pe32.FileHeader.TimeDateStamp;\r | |
571 | NtHdr->Pe32.FileHeader.PointerToSymbolTable = 0;\r | |
572 | NtHdr->Pe32.FileHeader.NumberOfSymbols = 0;\r | |
573 | NtHdr->Pe32.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32.OptionalHeader);\r | |
574 | NtHdr->Pe32.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE\r | |
575 | | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED\r | |
576 | | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED\r | |
577 | | EFI_IMAGE_FILE_32BIT_MACHINE;\r | |
578 | \r | |
579 | NtHdr->Pe32.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset;\r | |
580 | NtHdr->Pe32.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset;\r | |
581 | NtHdr->Pe32.OptionalHeader.SizeOfUninitializedData = 0;\r | |
582 | NtHdr->Pe32.OptionalHeader.AddressOfEntryPoint = CoffEntry;\r | |
583 | \r | |
584 | NtHdr->Pe32.OptionalHeader.BaseOfCode = mTextOffset;\r | |
585 | \r | |
586 | NtHdr->Pe32.OptionalHeader.BaseOfData = mDataOffset;\r | |
587 | NtHdr->Pe32.OptionalHeader.ImageBase = 0;\r | |
588 | NtHdr->Pe32.OptionalHeader.SectionAlignment = mCoffAlignment;\r | |
589 | NtHdr->Pe32.OptionalHeader.FileAlignment = mCoffAlignment;\r | |
590 | NtHdr->Pe32.OptionalHeader.SizeOfImage = 0;\r | |
591 | \r | |
592 | NtHdr->Pe32.OptionalHeader.SizeOfHeaders = mTextOffset;\r | |
593 | NtHdr->Pe32.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;\r | |
594 | \r | |
595 | //\r | |
596 | // Section headers.\r | |
597 | //\r | |
598 | if ((mDataOffset - mTextOffset) > 0) {\r | |
599 | CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset,\r | |
600 | EFI_IMAGE_SCN_CNT_CODE\r | |
601 | | EFI_IMAGE_SCN_MEM_EXECUTE\r | |
602 | | EFI_IMAGE_SCN_MEM_READ);\r | |
603 | } else {\r | |
604 | // Don't make a section of size 0.\r | |
605 | NtHdr->Pe32.FileHeader.NumberOfSections--;\r | |
606 | }\r | |
607 | \r | |
608 | if ((mHiiRsrcOffset - mDataOffset) > 0) {\r | |
609 | CreateSectionHeader (".data", mDataOffset, mHiiRsrcOffset - mDataOffset,\r | |
610 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA\r | |
611 | | EFI_IMAGE_SCN_MEM_WRITE\r | |
612 | | EFI_IMAGE_SCN_MEM_READ);\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 | if ((mRelocOffset - mHiiRsrcOffset) > 0) {\r | |
619 | CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset,\r | |
620 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA\r | |
621 | | EFI_IMAGE_SCN_MEM_READ);\r | |
622 | \r | |
623 | NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset;\r | |
624 | NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset;\r | |
625 | } else {\r | |
626 | // Don't make a section of size 0.\r | |
627 | NtHdr->Pe32.FileHeader.NumberOfSections--;\r | |
628 | }\r | |
629 | \r | |
630 | }\r | |
631 | \r | |
632 | STATIC\r | |
633 | BOOLEAN\r | |
634 | WriteSections32 (\r | |
635 | SECTION_FILTER_TYPES FilterType\r | |
636 | )\r | |
637 | {\r | |
638 | UINT32 Idx;\r | |
639 | Elf_Shdr *SecShdr;\r | |
640 | UINT32 SecOffset;\r | |
641 | BOOLEAN (*Filter)(Elf_Shdr *);\r | |
642 | \r | |
643 | //\r | |
644 | // Initialize filter pointer\r | |
645 | //\r | |
646 | switch (FilterType) {\r | |
647 | case SECTION_TEXT:\r | |
648 | Filter = IsTextShdr;\r | |
649 | break;\r | |
650 | case SECTION_HII:\r | |
651 | Filter = IsHiiRsrcShdr;\r | |
652 | break;\r | |
653 | case SECTION_DATA:\r | |
654 | Filter = IsDataShdr;\r | |
655 | break;\r | |
656 | default:\r | |
657 | return FALSE;\r | |
658 | }\r | |
659 | \r | |
660 | //\r | |
661 | // First: copy sections.\r | |
662 | //\r | |
663 | for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {\r | |
664 | Elf_Shdr *Shdr = GetShdrByIndex(Idx);\r | |
665 | if ((*Filter)(Shdr)) {\r | |
666 | switch (Shdr->sh_type) {\r | |
667 | case SHT_PROGBITS:\r | |
668 | /* Copy. */\r | |
669 | memcpy(mCoffFile + mCoffSectionsOffset[Idx],\r | |
670 | (UINT8*)mEhdr + Shdr->sh_offset,\r | |
671 | Shdr->sh_size);\r | |
672 | break;\r | |
673 | \r | |
674 | case SHT_NOBITS:\r | |
675 | memset(mCoffFile + mCoffSectionsOffset[Idx], 0, Shdr->sh_size);\r | |
676 | break;\r | |
677 | \r | |
678 | default:\r | |
679 | //\r | |
680 | // Ignore for unkown section type.\r | |
681 | //\r | |
682 | VerboseMsg ("%s unknown section type %x. We directly copy this section into Coff file", mInImageName, (unsigned)Shdr->sh_type);\r | |
683 | break;\r | |
684 | }\r | |
685 | }\r | |
686 | }\r | |
687 | \r | |
688 | //\r | |
689 | // Second: apply relocations.\r | |
690 | //\r | |
691 | for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {\r | |
692 | //\r | |
693 | // Determine if this is a relocation section.\r | |
694 | //\r | |
695 | Elf_Shdr *RelShdr = GetShdrByIndex(Idx);\r | |
696 | if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {\r | |
697 | continue;\r | |
698 | }\r | |
699 | \r | |
700 | //\r | |
701 | // Relocation section found. Now extract section information that the relocations\r | |
702 | // apply to in the ELF data and the new COFF data.\r | |
703 | //\r | |
704 | SecShdr = GetShdrByIndex(RelShdr->sh_info);\r | |
705 | SecOffset = mCoffSectionsOffset[RelShdr->sh_info];\r | |
706 | \r | |
707 | //\r | |
708 | // Only process relocations for the current filter type.\r | |
709 | //\r | |
710 | if (RelShdr->sh_type == SHT_REL && (*Filter)(SecShdr)) {\r | |
711 | UINT32 RelOffset;\r | |
712 | \r | |
713 | //\r | |
714 | // Determine the symbol table referenced by the relocation data.\r | |
715 | //\r | |
716 | Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link);\r | |
717 | UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;\r | |
718 | \r | |
719 | //\r | |
720 | // Process all relocation entries for this section.\r | |
721 | //\r | |
722 | for (RelOffset = 0; RelOffset < RelShdr->sh_size; RelOffset += RelShdr->sh_entsize) {\r | |
723 | //\r | |
724 | // Set pointer to relocation entry\r | |
725 | //\r | |
726 | Elf_Rel *Rel = (Elf_Rel *)((UINT8*)mEhdr + RelShdr->sh_offset + RelOffset);\r | |
727 | \r | |
728 | //\r | |
729 | // Set pointer to symbol table entry associated with the relocation entry.\r | |
730 | //\r | |
731 | Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);\r | |
732 | \r | |
733 | Elf_Shdr *SymShdr;\r | |
734 | UINT8 *Targ;\r | |
735 | UINT16 Address;\r | |
736 | \r | |
737 | //\r | |
738 | // Check section header index found in symbol table and get the section \r | |
739 | // header location.\r | |
740 | //\r | |
741 | if (Sym->st_shndx == SHN_UNDEF\r | |
742 | || Sym->st_shndx >= mEhdr->e_shnum) {\r | |
743 | const UINT8 *SymName = GetSymName(Sym);\r | |
744 | if (SymName == NULL) {\r | |
745 | SymName = (const UINT8 *)"<unknown>";\r | |
746 | }\r | |
747 | \r | |
748 | Error (NULL, 0, 3000, "Invalid",\r | |
749 | "%s: Bad definition for symbol '%s'@%#x or unsupported symbol type. "\r | |
750 | "For example, absolute and undefined symbols are not supported.",\r | |
751 | mInImageName, SymName, Sym->st_value);\r | |
752 | \r | |
753 | exit(EXIT_FAILURE);\r | |
754 | }\r | |
755 | SymShdr = GetShdrByIndex(Sym->st_shndx);\r | |
756 | \r | |
757 | //\r | |
758 | // Convert the relocation data to a pointer into the coff file.\r | |
759 | //\r | |
760 | // Note: \r | |
761 | // r_offset is the virtual address of the storage unit to be relocated.\r | |
762 | // sh_addr is the virtual address for the base of the section.\r | |
763 | //\r | |
764 | Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr);\r | |
765 | \r | |
766 | //\r | |
767 | // Determine how to handle each relocation type based on the machine type.\r | |
768 | //\r | |
769 | if (mEhdr->e_machine == EM_386) {\r | |
770 | switch (ELF_R_TYPE(Rel->r_info)) {\r | |
771 | case R_386_NONE:\r | |
772 | break;\r | |
773 | case R_386_32:\r | |
774 | //\r | |
775 | // Absolute relocation.\r | |
776 | // Converts Targ from a absolute virtual address to the absolute\r | |
777 | // COFF address.\r | |
778 | //\r | |
779 | *(UINT32 *)Targ = *(UINT32 *)Targ - SymShdr->sh_addr\r | |
780 | + mCoffSectionsOffset[Sym->st_shndx];\r | |
781 | break;\r | |
782 | case R_386_PC32:\r | |
783 | //\r | |
784 | // Relative relocation: Symbol - Ip + Addend\r | |
785 | //\r | |
786 | *(UINT32 *)Targ = *(UINT32 *)Targ\r | |
787 | + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr)\r | |
788 | - (SecOffset - SecShdr->sh_addr);\r | |
789 | break;\r | |
790 | default:\r | |
791 | Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_386 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));\r | |
792 | }\r | |
793 | } else if (mEhdr->e_machine == EM_ARM) {\r | |
794 | switch (ELF32_R_TYPE(Rel->r_info)) {\r | |
795 | case R_ARM_RBASE:\r | |
796 | // No relocation - no action required\r | |
797 | // break skipped\r | |
798 | \r | |
799 | case R_ARM_PC24:\r | |
800 | case R_ARM_REL32:\r | |
801 | case R_ARM_XPC25:\r | |
802 | case R_ARM_THM_PC22:\r | |
803 | case R_ARM_THM_JUMP19:\r | |
804 | case R_ARM_CALL:\r | |
805 | case R_ARM_JMP24:\r | |
806 | case R_ARM_THM_JUMP24: \r | |
807 | case R_ARM_PREL31: \r | |
808 | case R_ARM_MOVW_PREL_NC: \r | |
809 | case R_ARM_MOVT_PREL:\r | |
810 | case R_ARM_THM_MOVW_PREL_NC:\r | |
811 | case R_ARM_THM_MOVT_PREL:\r | |
812 | case R_ARM_THM_JMP6:\r | |
813 | case R_ARM_THM_ALU_PREL_11_0:\r | |
814 | case R_ARM_THM_PC12:\r | |
815 | case R_ARM_REL32_NOI:\r | |
816 | case R_ARM_ALU_PC_G0_NC:\r | |
817 | case R_ARM_ALU_PC_G0:\r | |
818 | case R_ARM_ALU_PC_G1_NC:\r | |
819 | case R_ARM_ALU_PC_G1:\r | |
820 | case R_ARM_ALU_PC_G2:\r | |
821 | case R_ARM_LDR_PC_G1:\r | |
822 | case R_ARM_LDR_PC_G2:\r | |
823 | case R_ARM_LDRS_PC_G0:\r | |
824 | case R_ARM_LDRS_PC_G1:\r | |
825 | case R_ARM_LDRS_PC_G2:\r | |
826 | case R_ARM_LDC_PC_G0:\r | |
827 | case R_ARM_LDC_PC_G1:\r | |
828 | case R_ARM_LDC_PC_G2:\r | |
829 | case R_ARM_GOT_PREL:\r | |
830 | case R_ARM_THM_JUMP11:\r | |
831 | case R_ARM_THM_JUMP8:\r | |
832 | case R_ARM_TLS_GD32:\r | |
833 | case R_ARM_TLS_LDM32:\r | |
834 | case R_ARM_TLS_IE32:\r | |
835 | // Thease are all PC-relative relocations and don't require modification\r | |
836 | // GCC does not seem to have the concept of a application that just needs to get relocated.\r | |
837 | break;\r | |
838 | \r | |
839 | case R_ARM_THM_MOVW_ABS_NC:\r | |
840 | // MOVW is only lower 16-bits of the addres\r | |
841 | Address = (UINT16)(Sym->st_value - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);\r | |
842 | ThumbMovtImmediatePatch ((UINT16 *)Targ, Address);\r | |
843 | break;\r | |
844 | \r | |
845 | case R_ARM_THM_MOVT_ABS:\r | |
846 | // MOVT is only upper 16-bits of the addres\r | |
847 | Address = (UINT16)((Sym->st_value - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]) >> 16);\r | |
848 | ThumbMovtImmediatePatch ((UINT16 *)Targ, Address);\r | |
849 | break;\r | |
850 | \r | |
851 | case R_ARM_ABS32:\r | |
852 | case R_ARM_RABS32:\r | |
853 | //\r | |
854 | // Absolute relocation.\r | |
855 | //\r | |
856 | *(UINT32 *)Targ = *(UINT32 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];\r | |
857 | break;\r | |
858 | \r | |
859 | default:\r | |
860 | Error (NULL, 0, 3000, "Invalid", "WriteSections (): %s unsupported ELF EM_ARM relocation 0x%x.", mInImageName, (unsigned) ELF32_R_TYPE(Rel->r_info));\r | |
861 | }\r | |
862 | }\r | |
863 | }\r | |
864 | }\r | |
865 | }\r | |
866 | \r | |
867 | return TRUE;\r | |
868 | }\r | |
869 | \r | |
870 | UINTN gMovwOffset = 0;\r | |
871 | \r | |
872 | STATIC\r | |
873 | VOID\r | |
874 | WriteRelocations32 (\r | |
875 | VOID\r | |
876 | )\r | |
877 | {\r | |
878 | UINT32 Index;\r | |
879 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r | |
880 | EFI_IMAGE_DATA_DIRECTORY *Dir;\r | |
881 | BOOLEAN FoundRelocations;\r | |
882 | Elf_Dyn *Dyn;\r | |
883 | Elf_Rel *Rel;\r | |
884 | UINTN RelElementSize;\r | |
885 | UINTN RelSize;\r | |
886 | UINTN RelOffset;\r | |
887 | UINTN K;\r | |
888 | Elf32_Phdr *DynamicSegment;\r | |
889 | \r | |
890 | for (Index = 0, FoundRelocations = FALSE; Index < mEhdr->e_shnum; Index++) {\r | |
891 | Elf_Shdr *RelShdr = GetShdrByIndex(Index);\r | |
892 | if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) {\r | |
893 | Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info);\r | |
894 | if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) {\r | |
895 | UINT32 RelIdx;\r | |
896 | \r | |
897 | FoundRelocations = TRUE;\r | |
898 | for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) {\r | |
899 | Rel = (Elf_Rel *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);\r | |
900 | \r | |
901 | if (mEhdr->e_machine == EM_386) { \r | |
902 | switch (ELF_R_TYPE(Rel->r_info)) {\r | |
903 | case R_386_NONE:\r | |
904 | case R_386_PC32:\r | |
905 | //\r | |
906 | // No fixup entry required.\r | |
907 | //\r | |
908 | break;\r | |
909 | case R_386_32:\r | |
910 | //\r | |
911 | // Creates a relative relocation entry from the absolute entry.\r | |
912 | //\r | |
913 | CoffAddFixup(mCoffSectionsOffset[RelShdr->sh_info]\r | |
914 | + (Rel->r_offset - SecShdr->sh_addr),\r | |
915 | EFI_IMAGE_REL_BASED_HIGHLOW);\r | |
916 | break;\r | |
917 | default:\r | |
918 | Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_386 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));\r | |
919 | }\r | |
920 | } else if (mEhdr->e_machine == EM_ARM) {\r | |
921 | switch (ELF32_R_TYPE(Rel->r_info)) {\r | |
922 | case R_ARM_RBASE:\r | |
923 | // No relocation - no action required\r | |
924 | // break skipped\r | |
925 | \r | |
926 | case R_ARM_PC24:\r | |
927 | case R_ARM_REL32:\r | |
928 | case R_ARM_XPC25:\r | |
929 | case R_ARM_THM_PC22:\r | |
930 | case R_ARM_THM_JUMP19:\r | |
931 | case R_ARM_CALL:\r | |
932 | case R_ARM_JMP24:\r | |
933 | case R_ARM_THM_JUMP24: \r | |
934 | case R_ARM_PREL31: \r | |
935 | case R_ARM_MOVW_PREL_NC: \r | |
936 | case R_ARM_MOVT_PREL:\r | |
937 | case R_ARM_THM_MOVW_PREL_NC:\r | |
938 | case R_ARM_THM_MOVT_PREL:\r | |
939 | case R_ARM_THM_JMP6:\r | |
940 | case R_ARM_THM_ALU_PREL_11_0:\r | |
941 | case R_ARM_THM_PC12:\r | |
942 | case R_ARM_REL32_NOI:\r | |
943 | case R_ARM_ALU_PC_G0_NC:\r | |
944 | case R_ARM_ALU_PC_G0:\r | |
945 | case R_ARM_ALU_PC_G1_NC:\r | |
946 | case R_ARM_ALU_PC_G1:\r | |
947 | case R_ARM_ALU_PC_G2:\r | |
948 | case R_ARM_LDR_PC_G1:\r | |
949 | case R_ARM_LDR_PC_G2:\r | |
950 | case R_ARM_LDRS_PC_G0:\r | |
951 | case R_ARM_LDRS_PC_G1:\r | |
952 | case R_ARM_LDRS_PC_G2:\r | |
953 | case R_ARM_LDC_PC_G0:\r | |
954 | case R_ARM_LDC_PC_G1:\r | |
955 | case R_ARM_LDC_PC_G2:\r | |
956 | case R_ARM_GOT_PREL:\r | |
957 | case R_ARM_THM_JUMP11:\r | |
958 | case R_ARM_THM_JUMP8:\r | |
959 | case R_ARM_TLS_GD32:\r | |
960 | case R_ARM_TLS_LDM32:\r | |
961 | case R_ARM_TLS_IE32:\r | |
962 | // Thease are all PC-relative relocations and don't require modification\r | |
963 | break;\r | |
964 | \r | |
965 | case R_ARM_THM_MOVW_ABS_NC:\r | |
966 | CoffAddFixup (\r | |
967 | mCoffSectionsOffset[RelShdr->sh_info]\r | |
968 | + (Rel->r_offset - SecShdr->sh_addr),\r | |
969 | EFI_IMAGE_REL_BASED_ARM_MOV32T\r | |
970 | );\r | |
971 | \r | |
972 | // PE/COFF treats MOVW/MOVT relocation as single 64-bit instruction\r | |
973 | // Track this address so we can log an error for unsupported sequence of MOVW/MOVT\r | |
974 | gMovwOffset = mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr);\r | |
975 | break;\r | |
976 | \r | |
977 | case R_ARM_THM_MOVT_ABS:\r | |
978 | if ((gMovwOffset + 4) != (mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr))) {\r | |
979 | 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 | |
980 | }\r | |
981 | break;\r | |
982 | \r | |
983 | case R_ARM_ABS32:\r | |
984 | case R_ARM_RABS32:\r | |
985 | CoffAddFixup (\r | |
986 | mCoffSectionsOffset[RelShdr->sh_info]\r | |
987 | + (Rel->r_offset - SecShdr->sh_addr),\r | |
988 | EFI_IMAGE_REL_BASED_HIGHLOW\r | |
989 | );\r | |
990 | break;\r | |
991 | \r | |
992 | default:\r | |
993 | Error (NULL, 0, 3000, "Invalid", "WriteRelocations(): %s unsupported ELF EM_ARM relocation 0x%x.", mInImageName, (unsigned) ELF32_R_TYPE(Rel->r_info));\r | |
994 | }\r | |
995 | } else {\r | |
996 | 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 | |
997 | }\r | |
998 | }\r | |
999 | }\r | |
1000 | }\r | |
1001 | }\r | |
1002 | \r | |
1003 | if (!FoundRelocations && (mEhdr->e_machine == EM_ARM)) {\r | |
1004 | /* Try again, but look for PT_DYNAMIC instead of SHT_REL */\r | |
1005 | \r | |
1006 | for (Index = 0; Index < mEhdr->e_phnum; Index++) {\r | |
1007 | RelElementSize = 0;\r | |
1008 | RelSize = 0;\r | |
1009 | RelOffset = 0;\r | |
1010 | \r | |
1011 | DynamicSegment = GetPhdrByIndex (Index);\r | |
1012 | \r | |
1013 | if (DynamicSegment->p_type == PT_DYNAMIC) {\r | |
1014 | Dyn = (Elf32_Dyn *) ((UINT8 *)mEhdr + DynamicSegment->p_offset);\r | |
1015 | \r | |
1016 | while (Dyn->d_tag != DT_NULL) {\r | |
1017 | switch (Dyn->d_tag) {\r | |
1018 | case DT_REL:\r | |
1019 | RelOffset = Dyn->d_un.d_val;\r | |
1020 | break;\r | |
1021 | \r | |
1022 | case DT_RELSZ:\r | |
1023 | RelSize = Dyn->d_un.d_val;\r | |
1024 | break;\r | |
1025 | \r | |
1026 | case DT_RELENT:\r | |
1027 | RelElementSize = Dyn->d_un.d_val;\r | |
1028 | break;\r | |
1029 | \r | |
1030 | default:\r | |
1031 | break;\r | |
1032 | }\r | |
1033 | Dyn++;\r | |
1034 | }\r | |
1035 | if (( RelOffset == 0 ) || ( RelSize == 0 ) || ( RelElementSize == 0 )) {\r | |
1036 | Error (NULL, 0, 3000, "Invalid", "%s bad ARM dynamic relocations.", mInImageName);\r | |
1037 | }\r | |
1038 | \r | |
1039 | for (Index = 0; Index < mEhdr->e_shnum; Index++) {\r | |
1040 | Elf_Shdr *shdr = GetShdrByIndex(Index);\r | |
1041 | \r | |
1042 | //\r | |
1043 | // The PT_DYNAMIC section contains DT_REL relocations whose r_offset\r | |
1044 | // field is relative to the base of a segment (or the entire image),\r | |
1045 | // and not to the base of an ELF input section as is the case for\r | |
1046 | // SHT_REL sections. This means that we cannot fix up such relocations\r | |
1047 | // unless we cross-reference ELF sections and segments, considering\r | |
1048 | // that the output placement recorded in mCoffSectionsOffset[] is\r | |
1049 | // section based, not segment based.\r | |
1050 | //\r | |
1051 | // Fortunately, there is a simple way around this: we require that the\r | |
1052 | // in-memory layout of the ELF and PE/COFF versions of the binary is\r | |
1053 | // identical. That way, r_offset will retain its validity as a PE/COFF\r | |
1054 | // image offset, and we can record it in the COFF fixup table\r | |
1055 | // unmodified.\r | |
1056 | //\r | |
1057 | if (shdr->sh_addr != mCoffSectionsOffset[Index]) {\r | |
1058 | Error (NULL, 0, 3000,\r | |
1059 | "Invalid", "%s: PT_DYNAMIC relocations require identical ELF and PE/COFF section offsets.",\r | |
1060 | mInImageName);\r | |
1061 | }\r | |
1062 | }\r | |
1063 | \r | |
1064 | for (K = 0; K < RelSize; K += RelElementSize) {\r | |
1065 | \r | |
1066 | if (DynamicSegment->p_paddr == 0) {\r | |
1067 | // Older versions of the ARM ELF (SWS ESPC 0003 B-02) specification define DT_REL\r | |
1068 | // as an offset in the dynamic segment. p_paddr is defined to be zero for ARM tools\r | |
1069 | Rel = (Elf32_Rel *) ((UINT8 *) mEhdr + DynamicSegment->p_offset + RelOffset + K);\r | |
1070 | } else {\r | |
1071 | // This is how it reads in the generic ELF specification\r | |
1072 | Rel = (Elf32_Rel *) ((UINT8 *) mEhdr + RelOffset + K);\r | |
1073 | }\r | |
1074 | \r | |
1075 | switch (ELF32_R_TYPE (Rel->r_info)) {\r | |
1076 | case R_ARM_RBASE:\r | |
1077 | break;\r | |
1078 | \r | |
1079 | case R_ARM_RABS32:\r | |
1080 | CoffAddFixup (Rel->r_offset, EFI_IMAGE_REL_BASED_HIGHLOW);\r | |
1081 | break;\r | |
1082 | \r | |
1083 | default:\r | |
1084 | Error (NULL, 0, 3000, "Invalid", "%s bad ARM dynamic relocations, unkown type %d.", mInImageName, ELF32_R_TYPE (Rel->r_info));\r | |
1085 | break;\r | |
1086 | }\r | |
1087 | }\r | |
1088 | break;\r | |
1089 | }\r | |
1090 | }\r | |
1091 | }\r | |
1092 | \r | |
1093 | //\r | |
1094 | // Pad by adding empty entries.\r | |
1095 | //\r | |
1096 | while (mCoffOffset & (mCoffAlignment - 1)) {\r | |
1097 | CoffAddFixupEntry(0);\r | |
1098 | }\r | |
1099 | \r | |
1100 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);\r | |
1101 | Dir = &NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];\r | |
1102 | Dir->Size = mCoffOffset - mRelocOffset;\r | |
1103 | if (Dir->Size == 0) {\r | |
1104 | // If no relocations, null out the directory entry and don't add the .reloc section\r | |
1105 | Dir->VirtualAddress = 0;\r | |
1106 | NtHdr->Pe32.FileHeader.NumberOfSections--;\r | |
1107 | } else {\r | |
1108 | Dir->VirtualAddress = mRelocOffset;\r | |
1109 | CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset,\r | |
1110 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA\r | |
1111 | | EFI_IMAGE_SCN_MEM_DISCARDABLE\r | |
1112 | | EFI_IMAGE_SCN_MEM_READ);\r | |
1113 | }\r | |
1114 | \r | |
1115 | }\r | |
1116 | \r | |
1117 | STATIC\r | |
1118 | VOID\r | |
1119 | WriteDebug32 (\r | |
1120 | VOID\r | |
1121 | )\r | |
1122 | {\r | |
1123 | UINT32 Len;\r | |
1124 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r | |
1125 | EFI_IMAGE_DATA_DIRECTORY *DataDir;\r | |
1126 | EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *Dir;\r | |
1127 | EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10;\r | |
1128 | \r | |
1129 | Len = strlen(mInImageName) + 1;\r | |
1130 | \r | |
1131 | Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + mDebugOffset);\r | |
1132 | Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW;\r | |
1133 | Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len;\r | |
1134 | Dir->RVA = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r | |
1135 | Dir->FileOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r | |
1136 | \r | |
1137 | Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1);\r | |
1138 | Nb10->Signature = CODEVIEW_SIGNATURE_NB10;\r | |
1139 | strcpy ((char *)(Nb10 + 1), mInImageName);\r | |
1140 | \r | |
1141 | \r | |
1142 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);\r | |
1143 | DataDir = &NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG];\r | |
1144 | DataDir->VirtualAddress = mDebugOffset;\r | |
1145 | DataDir->Size = Dir->SizeOfData + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r | |
1146 | }\r | |
1147 | \r | |
1148 | STATIC\r | |
1149 | VOID\r | |
1150 | SetImageSize32 (\r | |
1151 | VOID\r | |
1152 | )\r | |
1153 | {\r | |
1154 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r | |
1155 | \r | |
1156 | //\r | |
1157 | // Set image size\r | |
1158 | //\r | |
1159 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);\r | |
1160 | NtHdr->Pe32.OptionalHeader.SizeOfImage = mCoffOffset;\r | |
1161 | }\r | |
1162 | \r | |
1163 | STATIC\r | |
1164 | VOID\r | |
1165 | CleanUp32 (\r | |
1166 | VOID\r | |
1167 | )\r | |
1168 | {\r | |
1169 | if (mCoffSectionsOffset != NULL) {\r | |
1170 | free (mCoffSectionsOffset);\r | |
1171 | }\r | |
1172 | }\r | |
1173 | \r | |
1174 | \r |