]>
Commit | Line | Data |
---|---|---|
40d841f6 LG |
1 | /** @file |
2 | ||
da92f276 | 3 | Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR> |
4afd3d04 | 4 | Portions copyright (c) 2013, ARM Ltd. All rights reserved.<BR> |
40d841f6 LG |
5 | |
6 | This program and the accompanying materials are licensed and made available | |
7 | under the terms and conditions of the BSD License which accompanies this | |
8 | distribution. The full text of the license may be found at | |
9 | http://opensource.org/licenses/bsd-license.php | |
10 | ||
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
13 | ||
14 | **/ | |
15 | ||
16 | #include "WinNtInclude.h" | |
17 | ||
18 | #ifndef __GNUC__ | |
19 | #include <windows.h> | |
20 | #include <io.h> | |
21 | #endif | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <time.h> | |
26 | #include <ctype.h> | |
27 | ||
28 | #include <Common/UefiBaseTypes.h> | |
29 | #include <IndustryStandard/PeImage.h> | |
30 | ||
31 | #include "PeCoffLib.h" | |
32 | #include "EfiUtilityMsgs.h" | |
33 | ||
34 | #include "GenFw.h" | |
35 | #include "ElfConvert.h" | |
36 | #include "Elf64Convert.h" | |
37 | ||
38 | STATIC | |
39 | VOID | |
40 | ScanSections64 ( | |
41 | VOID | |
42 | ); | |
43 | ||
44 | STATIC | |
45 | BOOLEAN | |
46 | WriteSections64 ( | |
47 | SECTION_FILTER_TYPES FilterType | |
48 | ); | |
49 | ||
50 | STATIC | |
51 | VOID | |
52 | WriteRelocations64 ( | |
53 | VOID | |
54 | ); | |
55 | ||
56 | STATIC | |
57 | VOID | |
58 | WriteDebug64 ( | |
59 | VOID | |
60 | ); | |
61 | ||
62 | STATIC | |
63 | VOID | |
64 | SetImageSize64 ( | |
65 | VOID | |
66 | ); | |
67 | ||
68 | STATIC | |
69 | VOID | |
70 | CleanUp64 ( | |
71 | VOID | |
72 | ); | |
73 | ||
74 | // | |
75 | // Rename ELF32 strucutres to common names to help when porting to ELF64. | |
76 | // | |
77 | typedef Elf64_Shdr Elf_Shdr; | |
78 | typedef Elf64_Ehdr Elf_Ehdr; | |
79 | typedef Elf64_Rel Elf_Rel; | |
80 | typedef Elf64_Rela Elf_Rela; | |
81 | typedef Elf64_Sym Elf_Sym; | |
82 | typedef Elf64_Phdr Elf_Phdr; | |
83 | typedef Elf64_Dyn Elf_Dyn; | |
84 | #define ELFCLASS ELFCLASS64 | |
85 | #define ELF_R_TYPE(r) ELF64_R_TYPE(r) | |
86 | #define ELF_R_SYM(r) ELF64_R_SYM(r) | |
87 | ||
88 | // | |
89 | // Well known ELF structures. | |
90 | // | |
91 | STATIC Elf_Ehdr *mEhdr; | |
92 | STATIC Elf_Shdr *mShdrBase; | |
93 | STATIC Elf_Phdr *mPhdrBase; | |
94 | ||
95 | // | |
96 | // Coff information | |
97 | // | |
98 | STATIC const UINT32 mCoffAlignment = 0x20; | |
99 | ||
100 | // | |
101 | // PE section alignment. | |
102 | // | |
103 | STATIC const UINT16 mCoffNbrSections = 5; | |
104 | ||
105 | // | |
106 | // ELF sections to offset in Coff file. | |
107 | // | |
108 | STATIC UINT32 *mCoffSectionsOffset = NULL; | |
109 | ||
110 | // | |
111 | // Offsets in COFF file | |
112 | // | |
113 | STATIC UINT32 mNtHdrOffset; | |
114 | STATIC UINT32 mTextOffset; | |
115 | STATIC UINT32 mDataOffset; | |
116 | STATIC UINT32 mHiiRsrcOffset; | |
117 | STATIC UINT32 mRelocOffset; | |
118 | ||
119 | // | |
120 | // Initialization Function | |
121 | // | |
122 | BOOLEAN | |
123 | InitializeElf64 ( | |
124 | UINT8 *FileBuffer, | |
125 | ELF_FUNCTION_TABLE *ElfFunctions | |
126 | ) | |
127 | { | |
128 | // | |
129 | // Initialize data pointer and structures. | |
130 | // | |
131 | VerboseMsg ("Set EHDR"); | |
132 | mEhdr = (Elf_Ehdr*) FileBuffer; | |
133 | ||
134 | // | |
135 | // Check the ELF64 specific header information. | |
136 | // | |
137 | VerboseMsg ("Check ELF64 Header Information"); | |
138 | if (mEhdr->e_ident[EI_CLASS] != ELFCLASS64) { | |
139 | Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS64"); | |
140 | return FALSE; | |
141 | } | |
142 | if (mEhdr->e_ident[EI_DATA] != ELFDATA2LSB) { | |
143 | Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFDATA2LSB"); | |
144 | return FALSE; | |
145 | } | |
146 | if ((mEhdr->e_type != ET_EXEC) && (mEhdr->e_type != ET_DYN)) { | |
147 | Error (NULL, 0, 3000, "Unsupported", "ELF e_type not ET_EXEC or ET_DYN"); | |
148 | return FALSE; | |
149 | } | |
4afd3d04 LG |
150 | if (!((mEhdr->e_machine == EM_X86_64) || (mEhdr->e_machine == EM_AARCH64))) { |
151 | Error (NULL, 0, 3000, "Unsupported", "ELF e_machine not EM_X86_64 or EM_AARCH64"); | |
40d841f6 LG |
152 | return FALSE; |
153 | } | |
154 | if (mEhdr->e_version != EV_CURRENT) { | |
155 | Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT); | |
156 | return FALSE; | |
157 | } | |
158 | ||
159 | // | |
160 | // Update section header pointers | |
161 | // | |
162 | VerboseMsg ("Update Header Pointers"); | |
163 | mShdrBase = (Elf_Shdr *)((UINT8 *)mEhdr + mEhdr->e_shoff); | |
164 | mPhdrBase = (Elf_Phdr *)((UINT8 *)mEhdr + mEhdr->e_phoff); | |
165 | ||
166 | // | |
167 | // Create COFF Section offset buffer and zero. | |
168 | // | |
169 | VerboseMsg ("Create COFF Section Offset Buffer"); | |
170 | mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32)); | |
171 | memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32)); | |
172 | ||
173 | // | |
174 | // Fill in function pointers. | |
175 | // | |
176 | VerboseMsg ("Fill in Function Pointers"); | |
177 | ElfFunctions->ScanSections = ScanSections64; | |
178 | ElfFunctions->WriteSections = WriteSections64; | |
179 | ElfFunctions->WriteRelocations = WriteRelocations64; | |
180 | ElfFunctions->WriteDebug = WriteDebug64; | |
181 | ElfFunctions->SetImageSize = SetImageSize64; | |
182 | ElfFunctions->CleanUp = CleanUp64; | |
183 | ||
184 | return TRUE; | |
185 | } | |
186 | ||
187 | ||
188 | // | |
189 | // Header by Index functions | |
190 | // | |
191 | STATIC | |
192 | Elf_Shdr* | |
193 | GetShdrByIndex ( | |
194 | UINT32 Num | |
195 | ) | |
196 | { | |
197 | if (Num >= mEhdr->e_shnum) | |
198 | return NULL; | |
199 | return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize); | |
200 | } | |
201 | ||
202 | STATIC | |
203 | UINT32 | |
204 | CoffAlign ( | |
205 | UINT32 Offset | |
206 | ) | |
207 | { | |
208 | return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1); | |
209 | } | |
210 | ||
211 | // | |
212 | // filter functions | |
213 | // | |
214 | STATIC | |
215 | BOOLEAN | |
216 | IsTextShdr ( | |
217 | Elf_Shdr *Shdr | |
218 | ) | |
219 | { | |
220 | return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC); | |
221 | } | |
222 | ||
223 | STATIC | |
224 | BOOLEAN | |
225 | IsHiiRsrcShdr ( | |
226 | Elf_Shdr *Shdr | |
227 | ) | |
228 | { | |
229 | Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx); | |
230 | ||
231 | return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0); | |
232 | } | |
233 | ||
234 | STATIC | |
235 | BOOLEAN | |
236 | IsDataShdr ( | |
237 | Elf_Shdr *Shdr | |
238 | ) | |
239 | { | |
240 | if (IsHiiRsrcShdr(Shdr)) { | |
241 | return FALSE; | |
242 | } | |
243 | return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE); | |
244 | } | |
245 | ||
246 | // | |
247 | // Elf functions interface implementation | |
248 | // | |
249 | ||
250 | STATIC | |
251 | VOID | |
252 | ScanSections64 ( | |
253 | VOID | |
254 | ) | |
255 | { | |
256 | UINT32 i; | |
257 | EFI_IMAGE_DOS_HEADER *DosHdr; | |
258 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr; | |
259 | UINT32 CoffEntry; | |
da92f276 | 260 | UINT32 SectionCount; |
40d841f6 LG |
261 | |
262 | CoffEntry = 0; | |
263 | mCoffOffset = 0; | |
264 | ||
265 | // | |
266 | // Coff file start with a DOS header. | |
267 | // | |
268 | mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40; | |
269 | mNtHdrOffset = mCoffOffset; | |
270 | switch (mEhdr->e_machine) { | |
271 | case EM_X86_64: | |
272 | case EM_IA_64: | |
4afd3d04 | 273 | case EM_AARCH64: |
40d841f6 LG |
274 | mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64); |
275 | break; | |
276 | default: | |
277 | VerboseMsg ("%s unknown e_machine type. Assume X64", (UINTN)mEhdr->e_machine); | |
278 | mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64); | |
279 | break; | |
280 | } | |
281 | ||
282 | mTableOffset = mCoffOffset; | |
283 | mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER); | |
284 | ||
285 | // | |
286 | // First text sections. | |
287 | // | |
288 | mCoffOffset = CoffAlign(mCoffOffset); | |
289 | mTextOffset = mCoffOffset; | |
da92f276 | 290 | SectionCount = 0; |
40d841f6 LG |
291 | for (i = 0; i < mEhdr->e_shnum; i++) { |
292 | Elf_Shdr *shdr = GetShdrByIndex(i); | |
293 | if (IsTextShdr(shdr)) { | |
294 | if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) { | |
295 | // the alignment field is valid | |
296 | if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) { | |
297 | // if the section address is aligned we must align PE/COFF | |
298 | mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1)); | |
299 | } else if ((shdr->sh_addr % shdr->sh_addralign) != (mCoffOffset % shdr->sh_addralign)) { | |
300 | // ARM RVCT tools have behavior outside of the ELF specification to try | |
301 | // and make images smaller. If sh_addr is not aligned to sh_addralign | |
302 | // then the section needs to preserve sh_addr MOD sh_addralign. | |
303 | // Normally doing nothing here works great. | |
304 | Error (NULL, 0, 3000, "Invalid", "Unsupported section alignment."); | |
305 | } | |
306 | } | |
307 | ||
308 | /* Relocate entry. */ | |
309 | if ((mEhdr->e_entry >= shdr->sh_addr) && | |
310 | (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) { | |
311 | CoffEntry = (UINT32) (mCoffOffset + mEhdr->e_entry - shdr->sh_addr); | |
312 | } | |
313 | mCoffSectionsOffset[i] = mCoffOffset; | |
314 | mCoffOffset += (UINT32) shdr->sh_size; | |
da92f276 | 315 | SectionCount ++; |
40d841f6 LG |
316 | } |
317 | } | |
318 | ||
319 | if (mEhdr->e_machine != EM_ARM) { | |
320 | mCoffOffset = CoffAlign(mCoffOffset); | |
321 | } | |
322 | ||
da92f276 LG |
323 | if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) { |
324 | Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 text section. Source level debug might not work correctly.", mInImageName); | |
325 | } | |
326 | ||
40d841f6 LG |
327 | // |
328 | // Then data sections. | |
329 | // | |
330 | mDataOffset = mCoffOffset; | |
da92f276 | 331 | SectionCount = 0; |
40d841f6 LG |
332 | for (i = 0; i < mEhdr->e_shnum; i++) { |
333 | Elf_Shdr *shdr = GetShdrByIndex(i); | |
334 | if (IsDataShdr(shdr)) { | |
335 | if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) { | |
336 | // the alignment field is valid | |
337 | if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) { | |
338 | // if the section address is aligned we must align PE/COFF | |
339 | mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1)); | |
340 | } else if ((shdr->sh_addr % shdr->sh_addralign) != (mCoffOffset % shdr->sh_addralign)) { | |
341 | // ARM RVCT tools have behavior outside of the ELF specification to try | |
342 | // and make images smaller. If sh_addr is not aligned to sh_addralign | |
343 | // then the section needs to preserve sh_addr MOD sh_addralign. | |
344 | // Normally doing nothing here works great. | |
345 | Error (NULL, 0, 3000, "Invalid", "Unsupported section alignment."); | |
346 | } | |
347 | } | |
348 | mCoffSectionsOffset[i] = mCoffOffset; | |
349 | mCoffOffset += (UINT32) shdr->sh_size; | |
da92f276 | 350 | SectionCount ++; |
40d841f6 LG |
351 | } |
352 | } | |
353 | mCoffOffset = CoffAlign(mCoffOffset); | |
354 | ||
da92f276 LG |
355 | if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) { |
356 | Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 data section. Source level debug might not work correctly.", mInImageName); | |
357 | } | |
358 | ||
40d841f6 LG |
359 | // |
360 | // The HII resource sections. | |
361 | // | |
362 | mHiiRsrcOffset = mCoffOffset; | |
363 | for (i = 0; i < mEhdr->e_shnum; i++) { | |
364 | Elf_Shdr *shdr = GetShdrByIndex(i); | |
365 | if (IsHiiRsrcShdr(shdr)) { | |
366 | if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) { | |
367 | // the alignment field is valid | |
368 | if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) { | |
369 | // if the section address is aligned we must align PE/COFF | |
370 | mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1)); | |
371 | } else if ((shdr->sh_addr % shdr->sh_addralign) != (mCoffOffset % shdr->sh_addralign)) { | |
372 | // ARM RVCT tools have behavior outside of the ELF specification to try | |
373 | // and make images smaller. If sh_addr is not aligned to sh_addralign | |
374 | // then the section needs to preserve sh_addr MOD sh_addralign. | |
375 | // Normally doing nothing here works great. | |
376 | Error (NULL, 0, 3000, "Invalid", "Unsupported section alignment."); | |
377 | } | |
378 | } | |
379 | if (shdr->sh_size != 0) { | |
380 | mCoffSectionsOffset[i] = mCoffOffset; | |
381 | mCoffOffset += (UINT32) shdr->sh_size; | |
382 | mCoffOffset = CoffAlign(mCoffOffset); | |
383 | SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset); | |
384 | } | |
385 | break; | |
386 | } | |
387 | } | |
388 | ||
389 | mRelocOffset = mCoffOffset; | |
390 | ||
391 | // | |
392 | // Allocate base Coff file. Will be expanded later for relocations. | |
393 | // | |
394 | mCoffFile = (UINT8 *)malloc(mCoffOffset); | |
395 | memset(mCoffFile, 0, mCoffOffset); | |
396 | ||
397 | // | |
398 | // Fill headers. | |
399 | // | |
400 | DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile; | |
401 | DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE; | |
402 | DosHdr->e_lfanew = mNtHdrOffset; | |
403 | ||
404 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset); | |
405 | ||
406 | NtHdr->Pe32Plus.Signature = EFI_IMAGE_NT_SIGNATURE; | |
407 | ||
408 | switch (mEhdr->e_machine) { | |
409 | case EM_X86_64: | |
410 | NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_X64; | |
411 | NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC; | |
412 | break; | |
413 | case EM_IA_64: | |
414 | NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_IPF; | |
415 | NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC; | |
416 | break; | |
4afd3d04 LG |
417 | case EM_AARCH64: |
418 | NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_AARCH64; | |
419 | NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC; | |
420 | break; | |
40d841f6 LG |
421 | default: |
422 | VerboseMsg ("%s unknown e_machine type. Assume X64", (UINTN)mEhdr->e_machine); | |
423 | NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_X64; | |
424 | NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC; | |
425 | } | |
426 | ||
427 | NtHdr->Pe32Plus.FileHeader.NumberOfSections = mCoffNbrSections; | |
428 | NtHdr->Pe32Plus.FileHeader.TimeDateStamp = (UINT32) time(NULL); | |
429 | mImageTimeStamp = NtHdr->Pe32Plus.FileHeader.TimeDateStamp; | |
430 | NtHdr->Pe32Plus.FileHeader.PointerToSymbolTable = 0; | |
431 | NtHdr->Pe32Plus.FileHeader.NumberOfSymbols = 0; | |
432 | NtHdr->Pe32Plus.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32Plus.OptionalHeader); | |
433 | NtHdr->Pe32Plus.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE | |
434 | | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED | |
435 | | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED | |
436 | | EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE; | |
437 | ||
438 | NtHdr->Pe32Plus.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset; | |
439 | NtHdr->Pe32Plus.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset; | |
440 | NtHdr->Pe32Plus.OptionalHeader.SizeOfUninitializedData = 0; | |
441 | NtHdr->Pe32Plus.OptionalHeader.AddressOfEntryPoint = CoffEntry; | |
442 | ||
443 | NtHdr->Pe32Plus.OptionalHeader.BaseOfCode = mTextOffset; | |
444 | ||
445 | NtHdr->Pe32Plus.OptionalHeader.ImageBase = 0; | |
446 | NtHdr->Pe32Plus.OptionalHeader.SectionAlignment = mCoffAlignment; | |
447 | NtHdr->Pe32Plus.OptionalHeader.FileAlignment = mCoffAlignment; | |
448 | NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = 0; | |
449 | ||
450 | NtHdr->Pe32Plus.OptionalHeader.SizeOfHeaders = mTextOffset; | |
451 | NtHdr->Pe32Plus.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES; | |
452 | ||
453 | // | |
454 | // Section headers. | |
455 | // | |
456 | if ((mDataOffset - mTextOffset) > 0) { | |
457 | CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset, | |
458 | EFI_IMAGE_SCN_CNT_CODE | |
459 | | EFI_IMAGE_SCN_MEM_EXECUTE | |
460 | | EFI_IMAGE_SCN_MEM_READ); | |
461 | } else { | |
462 | // Don't make a section of size 0. | |
463 | NtHdr->Pe32Plus.FileHeader.NumberOfSections--; | |
464 | } | |
465 | ||
466 | if ((mHiiRsrcOffset - mDataOffset) > 0) { | |
467 | CreateSectionHeader (".data", mDataOffset, mHiiRsrcOffset - mDataOffset, | |
468 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA | |
469 | | EFI_IMAGE_SCN_MEM_WRITE | |
470 | | EFI_IMAGE_SCN_MEM_READ); | |
471 | } else { | |
472 | // Don't make a section of size 0. | |
473 | NtHdr->Pe32Plus.FileHeader.NumberOfSections--; | |
474 | } | |
475 | ||
476 | if ((mRelocOffset - mHiiRsrcOffset) > 0) { | |
477 | CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset, | |
478 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA | |
479 | | EFI_IMAGE_SCN_MEM_READ); | |
480 | ||
481 | NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset; | |
482 | NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset; | |
483 | } else { | |
484 | // Don't make a section of size 0. | |
485 | NtHdr->Pe32Plus.FileHeader.NumberOfSections--; | |
486 | } | |
487 | ||
488 | } | |
489 | ||
490 | STATIC | |
491 | BOOLEAN | |
492 | WriteSections64 ( | |
493 | SECTION_FILTER_TYPES FilterType | |
494 | ) | |
495 | { | |
496 | UINT32 Idx; | |
497 | Elf_Shdr *SecShdr; | |
498 | UINT32 SecOffset; | |
499 | BOOLEAN (*Filter)(Elf_Shdr *); | |
500 | ||
501 | // | |
502 | // Initialize filter pointer | |
503 | // | |
504 | switch (FilterType) { | |
505 | case SECTION_TEXT: | |
506 | Filter = IsTextShdr; | |
507 | break; | |
508 | case SECTION_HII: | |
509 | Filter = IsHiiRsrcShdr; | |
510 | break; | |
511 | case SECTION_DATA: | |
512 | Filter = IsDataShdr; | |
513 | break; | |
514 | default: | |
515 | return FALSE; | |
516 | } | |
517 | ||
518 | // | |
519 | // First: copy sections. | |
520 | // | |
521 | for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) { | |
522 | Elf_Shdr *Shdr = GetShdrByIndex(Idx); | |
523 | if ((*Filter)(Shdr)) { | |
524 | switch (Shdr->sh_type) { | |
525 | case SHT_PROGBITS: | |
526 | /* Copy. */ | |
527 | memcpy(mCoffFile + mCoffSectionsOffset[Idx], | |
528 | (UINT8*)mEhdr + Shdr->sh_offset, | |
529 | (size_t) Shdr->sh_size); | |
530 | break; | |
531 | ||
532 | case SHT_NOBITS: | |
533 | memset(mCoffFile + mCoffSectionsOffset[Idx], 0, (size_t) Shdr->sh_size); | |
534 | break; | |
535 | ||
536 | default: | |
537 | // | |
538 | // Ignore for unkown section type. | |
539 | // | |
540 | VerboseMsg ("%s unknown section type %x. We directly copy this section into Coff file", mInImageName, (unsigned)Shdr->sh_type); | |
541 | break; | |
542 | } | |
543 | } | |
544 | } | |
545 | ||
546 | // | |
547 | // Second: apply relocations. | |
548 | // | |
549 | VerboseMsg ("Applying Relocations..."); | |
550 | for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) { | |
4afd3d04 LG |
551 | // |
552 | // Determine if this is a relocation section. | |
553 | // | |
40d841f6 LG |
554 | Elf_Shdr *RelShdr = GetShdrByIndex(Idx); |
555 | if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) { | |
556 | continue; | |
557 | } | |
4afd3d04 LG |
558 | |
559 | // | |
560 | // Relocation section found. Now extract section information that the relocations | |
561 | // apply to in the ELF data and the new COFF data. | |
562 | // | |
40d841f6 LG |
563 | SecShdr = GetShdrByIndex(RelShdr->sh_info); |
564 | SecOffset = mCoffSectionsOffset[RelShdr->sh_info]; | |
4afd3d04 LG |
565 | |
566 | // | |
567 | // Only process relocations for the current filter type. | |
568 | // | |
40d841f6 LG |
569 | if (RelShdr->sh_type == SHT_RELA && (*Filter)(SecShdr)) { |
570 | UINT64 RelIdx; | |
4afd3d04 LG |
571 | |
572 | // | |
573 | // Determine the symbol table referenced by the relocation data. | |
574 | // | |
40d841f6 LG |
575 | Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link); |
576 | UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset; | |
4afd3d04 LG |
577 | |
578 | // | |
579 | // Process all relocation entries for this section. | |
580 | // | |
40d841f6 | 581 | for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += (UINT32) RelShdr->sh_entsize) { |
4afd3d04 LG |
582 | |
583 | // | |
584 | // Set pointer to relocation entry | |
585 | // | |
40d841f6 | 586 | Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx); |
4afd3d04 LG |
587 | |
588 | // | |
589 | // Set pointer to symbol table entry associated with the relocation entry. | |
590 | // | |
40d841f6 | 591 | Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize); |
4afd3d04 | 592 | |
40d841f6 LG |
593 | Elf_Shdr *SymShdr; |
594 | UINT8 *Targ; | |
595 | ||
4afd3d04 LG |
596 | // |
597 | // Check section header index found in symbol table and get the section | |
598 | // header location. | |
599 | // | |
40d841f6 LG |
600 | if (Sym->st_shndx == SHN_UNDEF |
601 | || Sym->st_shndx == SHN_ABS | |
602 | || Sym->st_shndx > mEhdr->e_shnum) { | |
603 | Error (NULL, 0, 3000, "Invalid", "%s bad symbol definition.", mInImageName); | |
604 | } | |
605 | SymShdr = GetShdrByIndex(Sym->st_shndx); | |
606 | ||
607 | // | |
4afd3d04 LG |
608 | // Convert the relocation data to a pointer into the coff file. |
609 | // | |
610 | // Note: | |
611 | // r_offset is the virtual address of the storage unit to be relocated. | |
612 | // sh_addr is the virtual address for the base of the section. | |
613 | // | |
614 | // r_offset in a memory address. | |
615 | // Convert it to a pointer in the coff file. | |
40d841f6 LG |
616 | // |
617 | Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr); | |
618 | ||
4afd3d04 LG |
619 | // |
620 | // Determine how to handle each relocation type based on the machine type. | |
621 | // | |
40d841f6 LG |
622 | if (mEhdr->e_machine == EM_X86_64) { |
623 | switch (ELF_R_TYPE(Rel->r_info)) { | |
624 | case R_X86_64_NONE: | |
625 | break; | |
626 | case R_X86_64_64: | |
627 | // | |
628 | // Absolute relocation. | |
629 | // | |
630 | VerboseMsg ("R_X86_64_64"); | |
631 | VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX", | |
632 | (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), | |
633 | *(UINT64 *)Targ); | |
634 | *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]; | |
635 | VerboseMsg ("Relocation: 0x%016LX", *(UINT64*)Targ); | |
636 | break; | |
637 | case R_X86_64_32: | |
638 | VerboseMsg ("R_X86_64_32"); | |
639 | VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X", | |
640 | (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), | |
641 | *(UINT32 *)Targ); | |
642 | *(UINT32 *)Targ = (UINT32)((UINT64)(*(UINT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]); | |
643 | VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ); | |
644 | break; | |
645 | case R_X86_64_32S: | |
646 | VerboseMsg ("R_X86_64_32S"); | |
647 | VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X", | |
648 | (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), | |
649 | *(UINT32 *)Targ); | |
650 | *(INT32 *)Targ = (INT32)((INT64)(*(INT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]); | |
651 | VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ); | |
652 | break; | |
653 | case R_X86_64_PC32: | |
654 | // | |
655 | // Relative relocation: Symbol - Ip + Addend | |
656 | // | |
657 | VerboseMsg ("R_X86_64_PC32"); | |
658 | VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X", | |
659 | (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), | |
660 | *(UINT32 *)Targ); | |
661 | *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ | |
662 | + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr) | |
663 | - (SecOffset - SecShdr->sh_addr)); | |
664 | VerboseMsg ("Relocation: 0x%08X", *(UINT32 *)Targ); | |
665 | break; | |
666 | default: | |
667 | Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info)); | |
668 | } | |
4afd3d04 LG |
669 | } else if (mEhdr->e_machine == EM_AARCH64) { |
670 | ||
671 | // AARCH64 GCC uses RELA relocation, so all relocations have to be fixed up. | |
672 | // As opposed to ARM32 using REL. | |
673 | ||
674 | switch (ELF_R_TYPE(Rel->r_info)) { | |
675 | ||
676 | case R_AARCH64_LD_PREL_LO19: | |
677 | if (Rel->r_addend != 0 ) { /* TODO */ | |
678 | Error (NULL, 0, 3000, "Invalid", "AArch64: R_AARCH64_LD_PREL_LO19 Need to fixup with addend!."); | |
679 | } | |
680 | break; | |
681 | ||
682 | case R_AARCH64_CALL26: | |
683 | if (Rel->r_addend != 0 ) { /* TODO */ | |
684 | Error (NULL, 0, 3000, "Invalid", "AArch64: R_AARCH64_CALL26 Need to fixup with addend!."); | |
685 | } | |
686 | break; | |
687 | ||
688 | case R_AARCH64_JUMP26: | |
689 | if (Rel->r_addend != 0 ) { /* TODO : AArch64 '-O2' optimisation. */ | |
690 | Error (NULL, 0, 3000, "Invalid", "AArch64: R_AARCH64_JUMP26 Need to fixup with addend!."); | |
691 | } | |
692 | break; | |
693 | ||
694 | case R_AARCH64_ADR_PREL_PG_HI21: | |
695 | // TODO : AArch64 'small' memory model. | |
696 | Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s unsupported ELF EM_AARCH64 relocation R_AARCH64_ADR_PREL_PG_HI21.", mInImageName); | |
697 | break; | |
698 | ||
699 | case R_AARCH64_ADD_ABS_LO12_NC: | |
700 | // TODO : AArch64 'small' memory model. | |
701 | Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s unsupported ELF EM_AARCH64 relocation R_AARCH64_ADD_ABS_LO12_NC.", mInImageName); | |
702 | break; | |
703 | ||
704 | // Absolute relocations. | |
705 | case R_AARCH64_ABS64: | |
706 | *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]; | |
707 | break; | |
708 | ||
709 | default: | |
710 | Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s unsupported ELF EM_AARCH64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info)); | |
711 | } | |
40d841f6 | 712 | } else { |
4afd3d04 | 713 | Error (NULL, 0, 3000, "Invalid", "Not a supported machine type"); |
40d841f6 LG |
714 | } |
715 | } | |
716 | } | |
717 | } | |
718 | ||
719 | return TRUE; | |
720 | } | |
721 | ||
722 | STATIC | |
723 | VOID | |
724 | WriteRelocations64 ( | |
725 | VOID | |
726 | ) | |
727 | { | |
728 | UINT32 Index; | |
729 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr; | |
730 | EFI_IMAGE_DATA_DIRECTORY *Dir; | |
40d841f6 | 731 | |
0d2711a6 | 732 | for (Index = 0; Index < mEhdr->e_shnum; Index++) { |
40d841f6 LG |
733 | Elf_Shdr *RelShdr = GetShdrByIndex(Index); |
734 | if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) { | |
735 | Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info); | |
736 | if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) { | |
737 | UINT64 RelIdx; | |
738 | ||
40d841f6 LG |
739 | for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) { |
740 | Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx); | |
40d841f6 LG |
741 | |
742 | if (mEhdr->e_machine == EM_X86_64) { | |
743 | switch (ELF_R_TYPE(Rel->r_info)) { | |
744 | case R_X86_64_NONE: | |
745 | case R_X86_64_PC32: | |
746 | break; | |
747 | case R_X86_64_64: | |
748 | VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08X", | |
749 | mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr)); | |
750 | CoffAddFixup( | |
751 | (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info] | |
752 | + (Rel->r_offset - SecShdr->sh_addr)), | |
753 | EFI_IMAGE_REL_BASED_DIR64); | |
754 | break; | |
755 | case R_X86_64_32S: | |
756 | case R_X86_64_32: | |
757 | VerboseMsg ("EFI_IMAGE_REL_BASED_HIGHLOW Offset: 0x%08X", | |
758 | mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr)); | |
759 | CoffAddFixup( | |
760 | (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info] | |
761 | + (Rel->r_offset - SecShdr->sh_addr)), | |
762 | EFI_IMAGE_REL_BASED_HIGHLOW); | |
763 | break; | |
764 | default: | |
765 | Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info)); | |
766 | } | |
4afd3d04 LG |
767 | } else if (mEhdr->e_machine == EM_AARCH64) { |
768 | // AArch64 GCC uses RELA relocation, so all relocations has to be fixed up. ARM32 uses REL. | |
769 | switch (ELF_R_TYPE(Rel->r_info)) { | |
770 | case R_AARCH64_LD_PREL_LO19: | |
771 | break; | |
772 | ||
773 | case R_AARCH64_CALL26: | |
774 | break; | |
775 | ||
776 | case R_AARCH64_JUMP26: | |
777 | break; | |
778 | ||
779 | case R_AARCH64_ADR_PREL_PG_HI21: | |
780 | // TODO : AArch64 'small' memory model. | |
781 | Error (NULL, 0, 3000, "Invalid", "WriteRelocations64(): %s unsupported ELF EM_AARCH64 relocation R_AARCH64_ADR_PREL_PG_HI21.", mInImageName); | |
782 | break; | |
783 | ||
784 | case R_AARCH64_ADD_ABS_LO12_NC: | |
785 | // TODO : AArch64 'small' memory model. | |
786 | Error (NULL, 0, 3000, "Invalid", "WriteRelocations64(): %s unsupported ELF EM_AARCH64 relocation R_AARCH64_ADD_ABS_LO12_NC.", mInImageName); | |
787 | break; | |
788 | ||
789 | case R_AARCH64_ABS64: | |
790 | CoffAddFixup( | |
791 | (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info] | |
792 | + (Rel->r_offset - SecShdr->sh_addr)), | |
793 | EFI_IMAGE_REL_BASED_DIR64); | |
794 | break; | |
795 | ||
796 | case R_AARCH64_ABS32: | |
797 | CoffAddFixup( | |
798 | (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info] | |
799 | + (Rel->r_offset - SecShdr->sh_addr)), | |
800 | EFI_IMAGE_REL_BASED_HIGHLOW); | |
801 | break; | |
802 | ||
803 | default: | |
804 | Error (NULL, 0, 3000, "Invalid", "WriteRelocations64(): %s unsupported ELF EM_AARCH64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info)); | |
805 | } | |
40d841f6 LG |
806 | } else { |
807 | Error (NULL, 0, 3000, "Not Supported", "This tool does not support relocations for ELF with e_machine %u (processor type).", (unsigned) mEhdr->e_machine); | |
808 | } | |
809 | } | |
810 | } | |
811 | } | |
812 | } | |
813 | ||
814 | // | |
815 | // Pad by adding empty entries. | |
816 | // | |
817 | while (mCoffOffset & (mCoffAlignment - 1)) { | |
818 | CoffAddFixupEntry(0); | |
819 | } | |
820 | ||
821 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset); | |
822 | Dir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC]; | |
823 | Dir->Size = mCoffOffset - mRelocOffset; | |
824 | if (Dir->Size == 0) { | |
825 | // If no relocations, null out the directory entry and don't add the .reloc section | |
826 | Dir->VirtualAddress = 0; | |
827 | NtHdr->Pe32Plus.FileHeader.NumberOfSections--; | |
828 | } else { | |
829 | Dir->VirtualAddress = mRelocOffset; | |
830 | CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset, | |
831 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA | |
832 | | EFI_IMAGE_SCN_MEM_DISCARDABLE | |
833 | | EFI_IMAGE_SCN_MEM_READ); | |
834 | } | |
835 | } | |
836 | ||
837 | STATIC | |
838 | VOID | |
839 | WriteDebug64 ( | |
840 | VOID | |
841 | ) | |
842 | { | |
843 | UINT32 Len; | |
844 | UINT32 DebugOffset; | |
845 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr; | |
846 | EFI_IMAGE_DATA_DIRECTORY *DataDir; | |
847 | EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *Dir; | |
848 | EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10; | |
849 | ||
850 | Len = strlen(mInImageName) + 1; | |
851 | DebugOffset = mCoffOffset; | |
852 | ||
853 | mCoffOffset += sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) | |
854 | + sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) | |
855 | + Len; | |
856 | mCoffOffset = CoffAlign(mCoffOffset); | |
857 | ||
858 | mCoffFile = realloc(mCoffFile, mCoffOffset); | |
859 | memset(mCoffFile + DebugOffset, 0, mCoffOffset - DebugOffset); | |
860 | ||
861 | Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + DebugOffset); | |
862 | Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW; | |
863 | Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len; | |
864 | Dir->RVA = DebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY); | |
865 | Dir->FileOffset = DebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY); | |
866 | ||
867 | Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1); | |
868 | Nb10->Signature = CODEVIEW_SIGNATURE_NB10; | |
869 | strcpy ((char *)(Nb10 + 1), mInImageName); | |
870 | ||
871 | ||
872 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset); | |
873 | DataDir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]; | |
874 | DataDir->VirtualAddress = DebugOffset; | |
875 | DataDir->Size = mCoffOffset - DebugOffset; | |
876 | if (DataDir->Size == 0) { | |
877 | // If no debug, null out the directory entry and don't add the .debug section | |
878 | DataDir->VirtualAddress = 0; | |
879 | NtHdr->Pe32Plus.FileHeader.NumberOfSections--; | |
880 | } else { | |
881 | DataDir->VirtualAddress = DebugOffset; | |
882 | CreateSectionHeader (".debug", DebugOffset, mCoffOffset - DebugOffset, | |
883 | EFI_IMAGE_SCN_CNT_INITIALIZED_DATA | |
884 | | EFI_IMAGE_SCN_MEM_DISCARDABLE | |
885 | | EFI_IMAGE_SCN_MEM_READ); | |
886 | ||
887 | } | |
888 | } | |
889 | ||
890 | STATIC | |
891 | VOID | |
892 | SetImageSize64 ( | |
893 | VOID | |
894 | ) | |
895 | { | |
896 | EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr; | |
897 | ||
898 | // | |
899 | // Set image size | |
900 | // | |
901 | NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset); | |
902 | NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = mCoffOffset; | |
903 | } | |
904 | ||
905 | STATIC | |
906 | VOID | |
907 | CleanUp64 ( | |
908 | VOID | |
909 | ) | |
910 | { | |
911 | if (mCoffSectionsOffset != NULL) { | |
912 | free (mCoffSectionsOffset); | |
913 | } | |
914 | } | |
915 | ||
916 |