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1 | /** @file |
2 | ||
3 | Copyright (c) 2010, Intel Corporation. All rights reserved.<BR> | |
4 | ||
5 | This program and the accompanying materials are licensed and made available | |
6 | under the terms and conditions of the BSD License which accompanies this | |
7 | distribution. The full text of the license may be found at | |
8 | http://opensource.org/licenses/bsd-license.php | |
9 | ||
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
12 | ||
13 | **/ | |
14 | ||
15 | #include "WinNtInclude.h" | |
16 | ||
17 | #ifndef __GNUC__ | |
18 | #include <windows.h> | |
19 | #include <io.h> | |
20 | #endif | |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <time.h> | |
25 | #include <ctype.h> | |
26 | ||
27 | #include <Common/UefiBaseTypes.h> | |
28 | #include <IndustryStandard/PeImage.h> | |
29 | ||
30 | #include "PeCoffLib.h" | |
31 | #include "EfiUtilityMsgs.h" | |
32 | ||
33 | #include "GenFw.h" | |
34 | #include "ElfConvert.h" | |
35 | #include "Elf64Convert.h" | |
36 | ||
37 | STATIC | |
38 | VOID | |
39 | ScanSections64 ( | |
40 | VOID | |
41 | ); | |
42 | ||
43 | STATIC | |
44 | BOOLEAN | |
45 | WriteSections64 ( | |
46 | SECTION_FILTER_TYPES FilterType | |
47 | ); | |
48 | ||
49 | STATIC | |
50 | VOID | |
51 | WriteRelocations64 ( | |
52 | VOID | |
53 | ); | |
54 | ||
55 | STATIC | |
56 | VOID | |
57 | WriteDebug64 ( | |
58 | VOID | |
59 | ); | |
60 | ||
61 | STATIC | |
62 | VOID | |
63 | SetImageSize64 ( | |
64 | VOID | |
65 | ); | |
66 | ||
67 | STATIC | |
68 | VOID | |
69 | CleanUp64 ( | |
70 | VOID | |
71 | ); | |
72 | ||
73 | // | |
74 | // Rename ELF32 strucutres to common names to help when porting to ELF64. | |
75 | // | |
76 | typedef Elf64_Shdr Elf_Shdr; | |
77 | typedef Elf64_Ehdr Elf_Ehdr; | |
78 | typedef Elf64_Rel Elf_Rel; | |
79 | typedef Elf64_Rela Elf_Rela; | |
80 | typedef Elf64_Sym Elf_Sym; | |
81 | typedef Elf64_Phdr Elf_Phdr; | |
82 | typedef Elf64_Dyn Elf_Dyn; | |
83 | #define ELFCLASS ELFCLASS64 | |
84 | #define ELF_R_TYPE(r) ELF64_R_TYPE(r) | |
85 | #define ELF_R_SYM(r) ELF64_R_SYM(r) | |
86 | ||
87 | // | |
88 | // Well known ELF structures. | |
89 | // | |
90 | STATIC Elf_Ehdr *mEhdr; | |
91 | STATIC Elf_Shdr *mShdrBase; | |
92 | STATIC Elf_Phdr *mPhdrBase; | |
93 | ||
94 | // | |
95 | // Coff information | |
96 | // | |
97 | STATIC const UINT32 mCoffAlignment = 0x20; | |
98 | ||
99 | // | |
100 | // PE section alignment. | |
101 | // | |
102 | STATIC const UINT16 mCoffNbrSections = 5; | |
103 | ||
104 | // | |
105 | // ELF sections to offset in Coff file. | |
106 | // | |
107 | STATIC UINT32 *mCoffSectionsOffset = NULL; | |
108 | ||
109 | // | |
110 | // Offsets in COFF file | |
111 | // | |
112 | STATIC UINT32 mNtHdrOffset; | |
113 | STATIC UINT32 mTextOffset; | |
114 | STATIC UINT32 mDataOffset; | |
115 | STATIC UINT32 mHiiRsrcOffset; | |
116 | STATIC UINT32 mRelocOffset; | |
117 | ||
118 | // | |
119 | // Initialization Function | |
120 | // | |
121 | BOOLEAN | |
122 | InitializeElf64 ( | |
123 | UINT8 *FileBuffer, | |
124 | ELF_FUNCTION_TABLE *ElfFunctions | |
125 | ) | |
126 | { | |
127 | // | |
128 | // Initialize data pointer and structures. | |
129 | // | |
130 | VerboseMsg ("Set EHDR"); | |
131 | mEhdr = (Elf_Ehdr*) FileBuffer; | |
132 | ||
133 | // | |
134 | // Check the ELF64 specific header information. | |
135 | // | |
136 | VerboseMsg ("Check ELF64 Header Information"); | |
137 | if (mEhdr->e_ident[EI_CLASS] != ELFCLASS64) { | |
138 | Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS64"); | |
139 | return FALSE; | |
140 | } | |
141 | if (mEhdr->e_ident[EI_DATA] != ELFDATA2LSB) { | |
142 | Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFDATA2LSB"); | |
143 | return FALSE; | |
144 | } | |
145 | if ((mEhdr->e_type != ET_EXEC) && (mEhdr->e_type != ET_DYN)) { | |
146 | Error (NULL, 0, 3000, "Unsupported", "ELF e_type not ET_EXEC or ET_DYN"); | |
147 | return FALSE; | |
148 | } | |
149 | if (!((mEhdr->e_machine == EM_X86_64))) { | |
150 | Error (NULL, 0, 3000, "Unsupported", "ELF e_machine not EM_X86_64"); | |
151 | return FALSE; | |
152 | } | |
153 | if (mEhdr->e_version != EV_CURRENT) { | |
154 | Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT); | |
155 | return FALSE; | |
156 | } | |
157 | ||
158 | // | |
159 | // Update section header pointers | |
160 | // | |
161 | VerboseMsg ("Update Header Pointers"); | |
162 | mShdrBase = (Elf_Shdr *)((UINT8 *)mEhdr + mEhdr->e_shoff); | |
163 | mPhdrBase = (Elf_Phdr *)((UINT8 *)mEhdr + mEhdr->e_phoff); | |
164 | ||
165 | // | |
166 | // Create COFF Section offset buffer and zero. | |
167 | // | |
168 | VerboseMsg ("Create COFF Section Offset Buffer"); | |
169 | mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32)); | |
170 | memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32)); | |
171 | ||
172 | // | |
173 | // Fill in function pointers. | |
174 | // | |
175 | VerboseMsg ("Fill in Function Pointers"); | |
176 | ElfFunctions->ScanSections = ScanSections64; | |
177 | ElfFunctions->WriteSections = WriteSections64; | |
178 | ElfFunctions->WriteRelocations = WriteRelocations64; | |
179 | ElfFunctions->WriteDebug = WriteDebug64; | |
180 | ElfFunctions->SetImageSize = SetImageSize64; | |
181 | ElfFunctions->CleanUp = CleanUp64; | |
182 | ||
183 | return TRUE; | |
184 | } | |
185 | ||
186 | ||
187 | // | |
188 | // Header by Index functions | |
189 | // | |
190 | STATIC | |
191 | Elf_Shdr* | |
192 | GetShdrByIndex ( | |
193 | UINT32 Num | |
194 | ) | |
195 | { | |
196 | if (Num >= mEhdr->e_shnum) | |
197 | return NULL; | |
198 | return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize); | |
199 | } | |
200 | ||
201 | STATIC | |
202 | UINT32 | |
203 | CoffAlign ( | |
204 | UINT32 Offset | |
205 | ) | |
206 | { | |
207 | return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1); | |
208 | } | |
209 | ||
210 | // | |
211 | // filter functions | |
212 | // | |
213 | STATIC | |
214 | BOOLEAN | |
215 | IsTextShdr ( | |
216 | Elf_Shdr *Shdr | |
217 | ) | |
218 | { | |
219 | return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC); | |
220 | } | |
221 | ||
222 | STATIC | |
223 | BOOLEAN | |
224 | IsHiiRsrcShdr ( | |
225 | Elf_Shdr *Shdr | |
226 | ) | |
227 | { | |
228 | Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx); | |
229 | ||
230 | return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0); | |
231 | } | |
232 | ||
233 | STATIC | |
234 | BOOLEAN | |
235 | IsDataShdr ( | |
236 | Elf_Shdr *Shdr | |
237 | ) | |
238 | { | |
239 | if (IsHiiRsrcShdr(Shdr)) { | |
240 | return FALSE; | |
241 | } | |
242 | return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE); | |
243 | } | |
244 | ||
245 | // | |
246 | // Elf functions interface implementation | |
247 | // | |
248 | ||
249 | STATIC | |
250 | VOID | |
251 | ScanSections64 ( | |
252 | VOID | |
253 | ) | |
254 | { | |
255 | UINT32 i; | |
256 | EFI_IMAGE_DOS_HEADER *DosHdr; | |
257 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr; | |
258 | UINT32 CoffEntry; | |
259 | ||
260 | CoffEntry = 0; | |
261 | mCoffOffset = 0; | |
262 | ||
263 | // | |
264 | // Coff file start with a DOS header. | |
265 | // | |
266 | mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40; | |
267 | mNtHdrOffset = mCoffOffset; | |
268 | switch (mEhdr->e_machine) { | |
269 | case EM_X86_64: | |
270 | case EM_IA_64: | |
271 | mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64); | |
272 | break; | |
273 | default: | |
274 | VerboseMsg ("%s unknown e_machine type. Assume X64", (UINTN)mEhdr->e_machine); | |
275 | mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64); | |
276 | break; | |
277 | } | |
278 | ||
279 | mTableOffset = mCoffOffset; | |
280 | mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER); | |
281 | ||
282 | // | |
283 | // First text sections. | |
284 | // | |
285 | mCoffOffset = CoffAlign(mCoffOffset); | |
286 | mTextOffset = mCoffOffset; | |
287 | for (i = 0; i < mEhdr->e_shnum; i++) { | |
288 | Elf_Shdr *shdr = GetShdrByIndex(i); | |
289 | if (IsTextShdr(shdr)) { | |
290 | if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) { | |
291 | // the alignment field is valid | |
292 | if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) { | |
293 | // if the section address is aligned we must align PE/COFF | |
294 | mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1)); | |
295 | } else if ((shdr->sh_addr % shdr->sh_addralign) != (mCoffOffset % shdr->sh_addralign)) { | |
296 | // ARM RVCT tools have behavior outside of the ELF specification to try | |
297 | // and make images smaller. If sh_addr is not aligned to sh_addralign | |
298 | // then the section needs to preserve sh_addr MOD sh_addralign. | |
299 | // Normally doing nothing here works great. | |
300 | Error (NULL, 0, 3000, "Invalid", "Unsupported section alignment."); | |
301 | } | |
302 | } | |
303 | ||
304 | /* Relocate entry. */ | |
305 | if ((mEhdr->e_entry >= shdr->sh_addr) && | |
306 | (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) { | |
307 | CoffEntry = (UINT32) (mCoffOffset + mEhdr->e_entry - shdr->sh_addr); | |
308 | } | |
309 | mCoffSectionsOffset[i] = mCoffOffset; | |
310 | mCoffOffset += (UINT32) shdr->sh_size; | |
311 | } | |
312 | } | |
313 | ||
314 | if (mEhdr->e_machine != EM_ARM) { | |
315 | mCoffOffset = CoffAlign(mCoffOffset); | |
316 | } | |
317 | ||
318 | // | |
319 | // Then data sections. | |
320 | // | |
321 | mDataOffset = mCoffOffset; | |
322 | for (i = 0; i < mEhdr->e_shnum; i++) { | |
323 | Elf_Shdr *shdr = GetShdrByIndex(i); | |
324 | if (IsDataShdr(shdr)) { | |
325 | if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) { | |
326 | // the alignment field is valid | |
327 | if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) { | |
328 | // if the section address is aligned we must align PE/COFF | |
329 | mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1)); | |
330 | } else if ((shdr->sh_addr % shdr->sh_addralign) != (mCoffOffset % shdr->sh_addralign)) { | |
331 | // ARM RVCT tools have behavior outside of the ELF specification to try | |
332 | // and make images smaller. If sh_addr is not aligned to sh_addralign | |
333 | // then the section needs to preserve sh_addr MOD sh_addralign. | |
334 | // Normally doing nothing here works great. | |
335 | Error (NULL, 0, 3000, "Invalid", "Unsupported section alignment."); | |
336 | } | |
337 | } | |
338 | mCoffSectionsOffset[i] = mCoffOffset; | |
339 | mCoffOffset += (UINT32) shdr->sh_size; | |
340 | } | |
341 | } | |
342 | mCoffOffset = CoffAlign(mCoffOffset); | |
343 | ||
344 | // | |
345 | // The HII resource sections. | |
346 | // | |
347 | mHiiRsrcOffset = mCoffOffset; | |
348 | for (i = 0; i < mEhdr->e_shnum; i++) { | |
349 | Elf_Shdr *shdr = GetShdrByIndex(i); | |
350 | if (IsHiiRsrcShdr(shdr)) { | |
351 | if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) { | |
352 | // the alignment field is valid | |
353 | if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) { | |
354 | // if the section address is aligned we must align PE/COFF | |
355 | mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1)); | |
356 | } else if ((shdr->sh_addr % shdr->sh_addralign) != (mCoffOffset % shdr->sh_addralign)) { | |
357 | // ARM RVCT tools have behavior outside of the ELF specification to try | |
358 | // and make images smaller. If sh_addr is not aligned to sh_addralign | |
359 | // then the section needs to preserve sh_addr MOD sh_addralign. | |
360 | // Normally doing nothing here works great. | |
361 | Error (NULL, 0, 3000, "Invalid", "Unsupported section alignment."); | |
362 | } | |
363 | } | |
364 | if (shdr->sh_size != 0) { | |
365 | mCoffSectionsOffset[i] = mCoffOffset; | |
366 | mCoffOffset += (UINT32) shdr->sh_size; | |
367 | mCoffOffset = CoffAlign(mCoffOffset); | |
368 | SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset); | |
369 | } | |
370 | break; | |
371 | } | |
372 | } | |
373 | ||
374 | mRelocOffset = mCoffOffset; | |
375 | ||
376 | // | |
377 | // Allocate base Coff file. Will be expanded later for relocations. | |
378 | // | |
379 | mCoffFile = (UINT8 *)malloc(mCoffOffset); | |
380 | memset(mCoffFile, 0, mCoffOffset); | |
381 | ||
382 | // | |
383 | // Fill headers. | |
384 | // | |
385 | DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile; | |
386 | DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE; | |
387 | DosHdr->e_lfanew = mNtHdrOffset; | |
388 | ||
389 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset); | |
390 | ||
391 | NtHdr->Pe32Plus.Signature = EFI_IMAGE_NT_SIGNATURE; | |
392 | ||
393 | switch (mEhdr->e_machine) { | |
394 | case EM_X86_64: | |
395 | NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_X64; | |
396 | NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC; | |
397 | break; | |
398 | case EM_IA_64: | |
399 | NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_IPF; | |
400 | NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC; | |
401 | break; | |
402 | default: | |
403 | VerboseMsg ("%s unknown e_machine type. Assume X64", (UINTN)mEhdr->e_machine); | |
404 | NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_X64; | |
405 | NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC; | |
406 | } | |
407 | ||
408 | NtHdr->Pe32Plus.FileHeader.NumberOfSections = mCoffNbrSections; | |
409 | NtHdr->Pe32Plus.FileHeader.TimeDateStamp = (UINT32) time(NULL); | |
410 | mImageTimeStamp = NtHdr->Pe32Plus.FileHeader.TimeDateStamp; | |
411 | NtHdr->Pe32Plus.FileHeader.PointerToSymbolTable = 0; | |
412 | NtHdr->Pe32Plus.FileHeader.NumberOfSymbols = 0; | |
413 | NtHdr->Pe32Plus.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32Plus.OptionalHeader); | |
414 | NtHdr->Pe32Plus.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE | |
415 | | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED | |
416 | | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED | |
417 | | EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE; | |
418 | ||
419 | NtHdr->Pe32Plus.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset; | |
420 | NtHdr->Pe32Plus.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset; | |
421 | NtHdr->Pe32Plus.OptionalHeader.SizeOfUninitializedData = 0; | |
422 | NtHdr->Pe32Plus.OptionalHeader.AddressOfEntryPoint = CoffEntry; | |
423 | ||
424 | NtHdr->Pe32Plus.OptionalHeader.BaseOfCode = mTextOffset; | |
425 | ||
426 | NtHdr->Pe32Plus.OptionalHeader.ImageBase = 0; | |
427 | NtHdr->Pe32Plus.OptionalHeader.SectionAlignment = mCoffAlignment; | |
428 | NtHdr->Pe32Plus.OptionalHeader.FileAlignment = mCoffAlignment; | |
429 | NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = 0; | |
430 | ||
431 | NtHdr->Pe32Plus.OptionalHeader.SizeOfHeaders = mTextOffset; | |
432 | NtHdr->Pe32Plus.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES; | |
433 | ||
434 | // | |
435 | // Section headers. | |
436 | // | |
437 | if ((mDataOffset - mTextOffset) > 0) { | |
438 | CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset, | |
439 | EFI_IMAGE_SCN_CNT_CODE | |
440 | | EFI_IMAGE_SCN_MEM_EXECUTE | |
441 | | EFI_IMAGE_SCN_MEM_READ); | |
442 | } else { | |
443 | // Don't make a section of size 0. | |
444 | NtHdr->Pe32Plus.FileHeader.NumberOfSections--; | |
445 | } | |
446 | ||
447 | if ((mHiiRsrcOffset - mDataOffset) > 0) { | |
448 | CreateSectionHeader (".data", mDataOffset, mHiiRsrcOffset - mDataOffset, | |
449 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA | |
450 | | EFI_IMAGE_SCN_MEM_WRITE | |
451 | | EFI_IMAGE_SCN_MEM_READ); | |
452 | } else { | |
453 | // Don't make a section of size 0. | |
454 | NtHdr->Pe32Plus.FileHeader.NumberOfSections--; | |
455 | } | |
456 | ||
457 | if ((mRelocOffset - mHiiRsrcOffset) > 0) { | |
458 | CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset, | |
459 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA | |
460 | | EFI_IMAGE_SCN_MEM_READ); | |
461 | ||
462 | NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset; | |
463 | NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset; | |
464 | } else { | |
465 | // Don't make a section of size 0. | |
466 | NtHdr->Pe32Plus.FileHeader.NumberOfSections--; | |
467 | } | |
468 | ||
469 | } | |
470 | ||
471 | STATIC | |
472 | BOOLEAN | |
473 | WriteSections64 ( | |
474 | SECTION_FILTER_TYPES FilterType | |
475 | ) | |
476 | { | |
477 | UINT32 Idx; | |
478 | Elf_Shdr *SecShdr; | |
479 | UINT32 SecOffset; | |
480 | BOOLEAN (*Filter)(Elf_Shdr *); | |
481 | ||
482 | // | |
483 | // Initialize filter pointer | |
484 | // | |
485 | switch (FilterType) { | |
486 | case SECTION_TEXT: | |
487 | Filter = IsTextShdr; | |
488 | break; | |
489 | case SECTION_HII: | |
490 | Filter = IsHiiRsrcShdr; | |
491 | break; | |
492 | case SECTION_DATA: | |
493 | Filter = IsDataShdr; | |
494 | break; | |
495 | default: | |
496 | return FALSE; | |
497 | } | |
498 | ||
499 | // | |
500 | // First: copy sections. | |
501 | // | |
502 | for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) { | |
503 | Elf_Shdr *Shdr = GetShdrByIndex(Idx); | |
504 | if ((*Filter)(Shdr)) { | |
505 | switch (Shdr->sh_type) { | |
506 | case SHT_PROGBITS: | |
507 | /* Copy. */ | |
508 | memcpy(mCoffFile + mCoffSectionsOffset[Idx], | |
509 | (UINT8*)mEhdr + Shdr->sh_offset, | |
510 | (size_t) Shdr->sh_size); | |
511 | break; | |
512 | ||
513 | case SHT_NOBITS: | |
514 | memset(mCoffFile + mCoffSectionsOffset[Idx], 0, (size_t) Shdr->sh_size); | |
515 | break; | |
516 | ||
517 | default: | |
518 | // | |
519 | // Ignore for unkown section type. | |
520 | // | |
521 | VerboseMsg ("%s unknown section type %x. We directly copy this section into Coff file", mInImageName, (unsigned)Shdr->sh_type); | |
522 | break; | |
523 | } | |
524 | } | |
525 | } | |
526 | ||
527 | // | |
528 | // Second: apply relocations. | |
529 | // | |
530 | VerboseMsg ("Applying Relocations..."); | |
531 | for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) { | |
532 | Elf_Shdr *RelShdr = GetShdrByIndex(Idx); | |
533 | if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) { | |
534 | continue; | |
535 | } | |
536 | SecShdr = GetShdrByIndex(RelShdr->sh_info); | |
537 | SecOffset = mCoffSectionsOffset[RelShdr->sh_info]; | |
538 | if (RelShdr->sh_type == SHT_RELA && (*Filter)(SecShdr)) { | |
539 | UINT64 RelIdx; | |
540 | Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link); | |
541 | UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset; | |
542 | for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += (UINT32) RelShdr->sh_entsize) { | |
543 | Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx); | |
544 | Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize); | |
545 | Elf_Shdr *SymShdr; | |
546 | UINT8 *Targ; | |
547 | ||
548 | if (Sym->st_shndx == SHN_UNDEF | |
549 | || Sym->st_shndx == SHN_ABS | |
550 | || Sym->st_shndx > mEhdr->e_shnum) { | |
551 | Error (NULL, 0, 3000, "Invalid", "%s bad symbol definition.", mInImageName); | |
552 | } | |
553 | SymShdr = GetShdrByIndex(Sym->st_shndx); | |
554 | ||
555 | // | |
556 | // Note: r_offset in a memory address. | |
557 | // Convert it to a pointer in the coff file. | |
558 | // | |
559 | Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr); | |
560 | ||
561 | if (mEhdr->e_machine == EM_X86_64) { | |
562 | switch (ELF_R_TYPE(Rel->r_info)) { | |
563 | case R_X86_64_NONE: | |
564 | break; | |
565 | case R_X86_64_64: | |
566 | // | |
567 | // Absolute relocation. | |
568 | // | |
569 | VerboseMsg ("R_X86_64_64"); | |
570 | VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX", | |
571 | (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), | |
572 | *(UINT64 *)Targ); | |
573 | *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]; | |
574 | VerboseMsg ("Relocation: 0x%016LX", *(UINT64*)Targ); | |
575 | break; | |
576 | case R_X86_64_32: | |
577 | VerboseMsg ("R_X86_64_32"); | |
578 | VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X", | |
579 | (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), | |
580 | *(UINT32 *)Targ); | |
581 | *(UINT32 *)Targ = (UINT32)((UINT64)(*(UINT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]); | |
582 | VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ); | |
583 | break; | |
584 | case R_X86_64_32S: | |
585 | VerboseMsg ("R_X86_64_32S"); | |
586 | VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X", | |
587 | (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), | |
588 | *(UINT32 *)Targ); | |
589 | *(INT32 *)Targ = (INT32)((INT64)(*(INT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]); | |
590 | VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ); | |
591 | break; | |
592 | case R_X86_64_PC32: | |
593 | // | |
594 | // Relative relocation: Symbol - Ip + Addend | |
595 | // | |
596 | VerboseMsg ("R_X86_64_PC32"); | |
597 | VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X", | |
598 | (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), | |
599 | *(UINT32 *)Targ); | |
600 | *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ | |
601 | + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr) | |
602 | - (SecOffset - SecShdr->sh_addr)); | |
603 | VerboseMsg ("Relocation: 0x%08X", *(UINT32 *)Targ); | |
604 | break; | |
605 | default: | |
606 | Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info)); | |
607 | } | |
608 | } else { | |
609 | Error (NULL, 0, 3000, "Invalid", "Not EM_X86_X64"); | |
610 | } | |
611 | } | |
612 | } | |
613 | } | |
614 | ||
615 | return TRUE; | |
616 | } | |
617 | ||
618 | STATIC | |
619 | VOID | |
620 | WriteRelocations64 ( | |
621 | VOID | |
622 | ) | |
623 | { | |
624 | UINT32 Index; | |
625 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr; | |
626 | EFI_IMAGE_DATA_DIRECTORY *Dir; | |
627 | BOOLEAN FoundRelocations; | |
628 | Elf_Sym *Sym; | |
629 | Elf_Shdr *SymtabShdr; | |
630 | UINT8 *Symtab; | |
631 | ||
632 | ||
633 | for (Index = 0, FoundRelocations = FALSE; Index < mEhdr->e_shnum; Index++) { | |
634 | Elf_Shdr *RelShdr = GetShdrByIndex(Index); | |
635 | if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) { | |
636 | Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info); | |
637 | if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) { | |
638 | UINT64 RelIdx; | |
639 | ||
640 | SymtabShdr = GetShdrByIndex (RelShdr->sh_link); | |
641 | Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset; | |
642 | FoundRelocations = TRUE; | |
643 | for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) { | |
644 | Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx); | |
645 | Elf_Shdr *SymShdr; | |
646 | ||
647 | Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize); | |
648 | SymShdr = GetShdrByIndex (Sym->st_shndx); | |
649 | ||
650 | if (mEhdr->e_machine == EM_X86_64) { | |
651 | switch (ELF_R_TYPE(Rel->r_info)) { | |
652 | case R_X86_64_NONE: | |
653 | case R_X86_64_PC32: | |
654 | break; | |
655 | case R_X86_64_64: | |
656 | VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08X", | |
657 | mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr)); | |
658 | CoffAddFixup( | |
659 | (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info] | |
660 | + (Rel->r_offset - SecShdr->sh_addr)), | |
661 | EFI_IMAGE_REL_BASED_DIR64); | |
662 | break; | |
663 | case R_X86_64_32S: | |
664 | case R_X86_64_32: | |
665 | VerboseMsg ("EFI_IMAGE_REL_BASED_HIGHLOW Offset: 0x%08X", | |
666 | mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr)); | |
667 | CoffAddFixup( | |
668 | (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info] | |
669 | + (Rel->r_offset - SecShdr->sh_addr)), | |
670 | EFI_IMAGE_REL_BASED_HIGHLOW); | |
671 | break; | |
672 | default: | |
673 | Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info)); | |
674 | } | |
675 | } else { | |
676 | Error (NULL, 0, 3000, "Not Supported", "This tool does not support relocations for ELF with e_machine %u (processor type).", (unsigned) mEhdr->e_machine); | |
677 | } | |
678 | } | |
679 | } | |
680 | } | |
681 | } | |
682 | ||
683 | // | |
684 | // Pad by adding empty entries. | |
685 | // | |
686 | while (mCoffOffset & (mCoffAlignment - 1)) { | |
687 | CoffAddFixupEntry(0); | |
688 | } | |
689 | ||
690 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset); | |
691 | Dir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC]; | |
692 | Dir->Size = mCoffOffset - mRelocOffset; | |
693 | if (Dir->Size == 0) { | |
694 | // If no relocations, null out the directory entry and don't add the .reloc section | |
695 | Dir->VirtualAddress = 0; | |
696 | NtHdr->Pe32Plus.FileHeader.NumberOfSections--; | |
697 | } else { | |
698 | Dir->VirtualAddress = mRelocOffset; | |
699 | CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset, | |
700 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA | |
701 | | EFI_IMAGE_SCN_MEM_DISCARDABLE | |
702 | | EFI_IMAGE_SCN_MEM_READ); | |
703 | } | |
704 | } | |
705 | ||
706 | STATIC | |
707 | VOID | |
708 | WriteDebug64 ( | |
709 | VOID | |
710 | ) | |
711 | { | |
712 | UINT32 Len; | |
713 | UINT32 DebugOffset; | |
714 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr; | |
715 | EFI_IMAGE_DATA_DIRECTORY *DataDir; | |
716 | EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *Dir; | |
717 | EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10; | |
718 | ||
719 | Len = strlen(mInImageName) + 1; | |
720 | DebugOffset = mCoffOffset; | |
721 | ||
722 | mCoffOffset += sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) | |
723 | + sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) | |
724 | + Len; | |
725 | mCoffOffset = CoffAlign(mCoffOffset); | |
726 | ||
727 | mCoffFile = realloc(mCoffFile, mCoffOffset); | |
728 | memset(mCoffFile + DebugOffset, 0, mCoffOffset - DebugOffset); | |
729 | ||
730 | Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + DebugOffset); | |
731 | Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW; | |
732 | Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len; | |
733 | Dir->RVA = DebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY); | |
734 | Dir->FileOffset = DebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY); | |
735 | ||
736 | Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1); | |
737 | Nb10->Signature = CODEVIEW_SIGNATURE_NB10; | |
738 | strcpy ((char *)(Nb10 + 1), mInImageName); | |
739 | ||
740 | ||
741 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset); | |
742 | DataDir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]; | |
743 | DataDir->VirtualAddress = DebugOffset; | |
744 | DataDir->Size = mCoffOffset - DebugOffset; | |
745 | if (DataDir->Size == 0) { | |
746 | // If no debug, null out the directory entry and don't add the .debug section | |
747 | DataDir->VirtualAddress = 0; | |
748 | NtHdr->Pe32Plus.FileHeader.NumberOfSections--; | |
749 | } else { | |
750 | DataDir->VirtualAddress = DebugOffset; | |
751 | CreateSectionHeader (".debug", DebugOffset, mCoffOffset - DebugOffset, | |
752 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA | |
753 | | EFI_IMAGE_SCN_MEM_DISCARDABLE | |
754 | | EFI_IMAGE_SCN_MEM_READ); | |
755 | ||
756 | } | |
757 | } | |
758 | ||
759 | STATIC | |
760 | VOID | |
761 | SetImageSize64 ( | |
762 | VOID | |
763 | ) | |
764 | { | |
765 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr; | |
766 | ||
767 | // | |
768 | // Set image size | |
769 | // | |
770 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset); | |
771 | NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = mCoffOffset; | |
772 | } | |
773 | ||
774 | STATIC | |
775 | VOID | |
776 | CleanUp64 ( | |
777 | VOID | |
778 | ) | |
779 | { | |
780 | if (mCoffSectionsOffset != NULL) { | |
781 | free (mCoffSectionsOffset); | |
782 | } | |
783 | } | |
784 | ||
785 |