BaseTools/Source/C/GenFw/Elf32Convert.c

   1 /** @file
   2 Elf32 Convert solution
   3
   4 Copyright (c) 2010 - 2016, Intel Corporation. All rights reserved.<BR>
   5 Portions copyright (c) 2013, ARM Ltd. All rights reserved.<BR>
   6
   7 This program and the accompanying materials are licensed and made available
   8 under the terms and conditions of the BSD License which accompanies this
   9 distribution.  The full text of the license may be found at
  10 http://opensource.org/licenses/bsd-license.php
  11
  12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14
  15 **/
  16
  17 #include "WinNtInclude.h"
  18
  19 #ifndef __GNUC__
  20 #include <windows.h>
  21 #include <io.h>
  22 #endif
  23 #include <assert.h>
  24 #include <stdbool.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <time.h>
  29 #include <ctype.h>
  30
  31 #include <Common/UefiBaseTypes.h>
  32 #include <IndustryStandard/PeImage.h>
  33
  34 #include "PeCoffLib.h"
  35 #include "EfiUtilityMsgs.h"
  36
  37 #include "GenFw.h"
  38 #include "ElfConvert.h"
  39 #include "Elf32Convert.h"
  40
  41 STATIC
  42 VOID
  43 ScanSections32 (
  44   VOID
  45   );
  46
  47 STATIC
  48 BOOLEAN
  49 WriteSections32 (
  50   SECTION_FILTER_TYPES  FilterType
  51   );
  52
  53 STATIC
  54 VOID
  55 WriteRelocations32 (
  56   VOID
  57   );
  58
  59 STATIC
  60 VOID
  61 WriteDebug32 (
  62   VOID
  63   );
  64
  65 STATIC
  66 VOID
  67 SetImageSize32 (
  68   VOID
  69   );
  70
  71 STATIC
  72 VOID
  73 CleanUp32 (
  74   VOID
  75   );
  76
  77 //
  78 // Rename ELF32 strucutres to common names to help when porting to ELF64.
  79 //
  80 typedef Elf32_Shdr Elf_Shdr;
  81 typedef Elf32_Ehdr Elf_Ehdr;
  82 typedef Elf32_Rel Elf_Rel;
  83 typedef Elf32_Sym Elf_Sym;
  84 typedef Elf32_Phdr Elf_Phdr;
  85 typedef Elf32_Dyn Elf_Dyn;
  86 #define ELFCLASS ELFCLASS32
  87 #define ELF_R_TYPE(r) ELF32_R_TYPE(r)
  88 #define ELF_R_SYM(r) ELF32_R_SYM(r)
  89
  90 //
  91 // Well known ELF structures.
  92 //
  93 STATIC Elf_Ehdr *mEhdr;
  94 STATIC Elf_Shdr *mShdrBase;
  95 STATIC Elf_Phdr *mPhdrBase;
  96
  97 //
  98 // Coff information
  99 //
 100 STATIC UINT32 mCoffAlignment = 0x20;
 101
 102 //
 103 // PE section alignment.
 104 //
 105 STATIC const UINT16 mCoffNbrSections = 4;
 106
 107 //
 108 // ELF sections to offset in Coff file.
 109 //
 110 STATIC UINT32 *mCoffSectionsOffset = NULL;
 111
 112 //
 113 // Offsets in COFF file
 114 //
 115 STATIC UINT32 mNtHdrOffset;
 116 STATIC UINT32 mTextOffset;
 117 STATIC UINT32 mDataOffset;
 118 STATIC UINT32 mHiiRsrcOffset;
 119 STATIC UINT32 mRelocOffset;
 120 STATIC UINT32 mDebugOffset;
 121
 122 //
 123 // Initialization Function
 124 //
 125 BOOLEAN
 126 InitializeElf32 (
 127   UINT8               *FileBuffer,
 128   ELF_FUNCTION_TABLE  *ElfFunctions
 129   )
 130 {
 131   //
 132   // Initialize data pointer and structures.
 133   //
 134   mEhdr = (Elf_Ehdr*) FileBuffer;
 135
 136   //
 137   // Check the ELF32 specific header information.
 138   //
 139   if (mEhdr->e_ident[EI_CLASS] != ELFCLASS32) {
 140     Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS32");
 141     return FALSE;
 142   }
 143   if (mEhdr->e_ident[EI_DATA] != ELFDATA2LSB) {
 144     Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFDATA2LSB");
 145     return FALSE;
 146   }
 147   if ((mEhdr->e_type != ET_EXEC) && (mEhdr->e_type != ET_DYN)) {
 148     Error (NULL, 0, 3000, "Unsupported", "ELF e_type not ET_EXEC or ET_DYN");
 149     return FALSE;
 150   }
 151   if (!((mEhdr->e_machine == EM_386) || (mEhdr->e_machine == EM_ARM))) {
 152     Error (NULL, 0, 3000, "Unsupported", "ELF e_machine not EM_386 or EM_ARM");
 153     return FALSE;
 154   }
 155   if (mEhdr->e_version != EV_CURRENT) {
 156     Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT);
 157     return FALSE;
 158   }
 159
 160   //
 161   // Update section header pointers
 162   //
 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   mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32));
 170   if (mCoffSectionsOffset == NULL) {
 171     Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
 172     return FALSE;
 173   }
 174   memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32));
 175
 176   //
 177   // Fill in function pointers.
 178   //
 179   ElfFunctions->ScanSections = ScanSections32;
 180   ElfFunctions->WriteSections = WriteSections32;
 181   ElfFunctions->WriteRelocations = WriteRelocations32;
 182   ElfFunctions->WriteDebug = WriteDebug32;
 183   ElfFunctions->SetImageSize = SetImageSize32;
 184   ElfFunctions->CleanUp = CleanUp32;
 185
 186   return TRUE;
 187 }
 188
 189
 190 //
 191 // Header by Index functions
 192 //
 193 STATIC
 194 Elf_Shdr*
 195 GetShdrByIndex (
 196   UINT32 Num
 197   )
 198 {
 199   if (Num >= mEhdr->e_shnum) {
 200     Error (NULL, 0, 3000, "Invalid", "GetShdrByIndex: Index %u is too high.", Num);
 201     exit(EXIT_FAILURE);
 202   }
 203
 204   return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize);
 205 }
 206
 207 STATIC
 208 Elf_Phdr*
 209 GetPhdrByIndex (
 210   UINT32 num
 211   )
 212 {
 213   if (num >= mEhdr->e_phnum) {
 214     Error (NULL, 0, 3000, "Invalid", "GetPhdrByIndex: Index %u is too high.", num);
 215     exit(EXIT_FAILURE);
 216   }
 217
 218   return (Elf_Phdr *)((UINT8*)mPhdrBase + num * mEhdr->e_phentsize);
 219 }
 220
 221 STATIC
 222 UINT32
 223 CoffAlign (
 224   UINT32 Offset
 225   )
 226 {
 227   return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1);
 228 }
 229
 230 STATIC
 231 UINT32
 232 DebugRvaAlign (
 233   UINT32 Offset
 234   )
 235 {
 236   return (Offset + 3) & ~3;
 237 }
 238
 239 //
 240 // filter functions
 241 //
 242 STATIC
 243 BOOLEAN
 244 IsTextShdr (
 245   Elf_Shdr *Shdr
 246   )
 247 {
 248   return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC);
 249 }
 250
 251 STATIC
 252 BOOLEAN
 253 IsHiiRsrcShdr (
 254   Elf_Shdr *Shdr
 255   )
 256 {
 257   Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
 258
 259   return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0);
 260 }
 261
 262 STATIC
 263 BOOLEAN
 264 IsDataShdr (
 265   Elf_Shdr *Shdr
 266   )
 267 {
 268   if (IsHiiRsrcShdr(Shdr)) {
 269     return FALSE;
 270   }
 271   return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE);
 272 }
 273
 274 STATIC
 275 BOOLEAN
 276 IsStrtabShdr (
 277   Elf_Shdr *Shdr
 278   )
 279 {
 280   Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
 281
 282   return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_STRTAB_SECTION_NAME) == 0);
 283 }
 284
 285 STATIC
 286 Elf_Shdr *
 287 FindStrtabShdr (
 288   VOID
 289   )
 290 {
 291   UINT32 i;
 292   for (i = 0; i < mEhdr->e_shnum; i++) {
 293     Elf_Shdr *shdr = GetShdrByIndex(i);
 294     if (IsStrtabShdr(shdr)) {
 295       return shdr;
 296     }
 297   }
 298   return NULL;
 299 }
 300
 301 STATIC
 302 const UINT8 *
 303 GetSymName (
 304   Elf_Sym *Sym
 305   )
 306 {
 307   if (Sym->st_name == 0) {
 308     return NULL;
 309   }
 310
 311   Elf_Shdr *StrtabShdr = FindStrtabShdr();
 312   if (StrtabShdr == NULL) {
 313     return NULL;
 314   }
 315
 316   assert(Sym->st_name < StrtabShdr->sh_size);
 317
 318   UINT8* StrtabContents = (UINT8*)mEhdr + StrtabShdr->sh_offset;
 319
 320   bool foundEnd = false;
 321   UINT32 i;
 322   for (i = Sym->st_name; (i < StrtabShdr->sh_size) && !foundEnd; i++) {
 323     foundEnd = StrtabContents[i] == 0;
 324   }
 325   assert(foundEnd);
 326
 327   return StrtabContents + Sym->st_name;
 328 }
 329
 330 //
 331 // Elf functions interface implementation
 332 //
 333
 334 STATIC
 335 VOID
 336 ScanSections32 (
 337   VOID
 338   )
 339 {
 340   UINT32                          i;
 341   EFI_IMAGE_DOS_HEADER            *DosHdr;
 342   EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
 343   UINT32                          CoffEntry;
 344   UINT32                          SectionCount;
 345   BOOLEAN                         FoundSection;
 346
 347   CoffEntry = 0;
 348   mCoffOffset = 0;
 349
 350   //
 351   // Coff file start with a DOS header.
 352   //
 353   mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40;
 354   mNtHdrOffset = mCoffOffset;
 355   switch (mEhdr->e_machine) {
 356   case EM_386:
 357   case EM_ARM:
 358     mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS32);
 359   break;
 360   default:
 361     VerboseMsg ("%s unknown e_machine type. Assume IA-32", (UINTN)mEhdr->e_machine);
 362     mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS32);
 363   break;
 364   }
 365
 366   mTableOffset = mCoffOffset;
 367   mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER);
 368
 369   //
 370   // Set mCoffAlignment to the maximum alignment of the input sections
 371   // we care about
 372   //
 373   for (i = 0; i < mEhdr->e_shnum; i++) {
 374     Elf_Shdr *shdr = GetShdrByIndex(i);
 375     if (shdr->sh_addralign <= mCoffAlignment) {
 376       continue;
 377     }
 378     if (IsTextShdr(shdr) || IsDataShdr(shdr) || IsHiiRsrcShdr(shdr)) {
 379       mCoffAlignment = (UINT32)shdr->sh_addralign;
 380     }
 381   }
 382
 383   //
 384   // Move the PE/COFF header right before the first section. This will help us
 385   // save space when converting to TE.
 386   //
 387   if (mCoffAlignment > mCoffOffset) {
 388     mNtHdrOffset += mCoffAlignment - mCoffOffset;
 389     mTableOffset += mCoffAlignment - mCoffOffset;
 390     mCoffOffset = mCoffAlignment;
 391   }
 392
 393   //
 394   // First text sections.
 395   //
 396   mCoffOffset = CoffAlign(mCoffOffset);
 397   mTextOffset = mCoffOffset;
 398   FoundSection = FALSE;
 399   SectionCount = 0;
 400   for (i = 0; i < mEhdr->e_shnum; i++) {
 401     Elf_Shdr *shdr = GetShdrByIndex(i);
 402     if (IsTextShdr(shdr)) {
 403       if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
 404         // the alignment field is valid
 405         if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
 406           // if the section address is aligned we must align PE/COFF
 407           mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);
 408         } else {
 409           Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
 410         }
 411       }
 412
 413       /* Relocate entry.  */
 414       if ((mEhdr->e_entry >= shdr->sh_addr) &&
 415           (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) {
 416         CoffEntry = mCoffOffset + mEhdr->e_entry - shdr->sh_addr;
 417       }
 418
 419       //
 420       // Set mTextOffset with the offset of the first '.text' section
 421       //
 422       if (!FoundSection) {
 423         mTextOffset = mCoffOffset;
 424         FoundSection = TRUE;
 425       }
 426
 427       mCoffSectionsOffset[i] = mCoffOffset;
 428       mCoffOffset += shdr->sh_size;
 429       SectionCount ++;
 430     }
 431   }
 432
 433   if (!FoundSection) {
 434     Error (NULL, 0, 3000, "Invalid", "Did not find any '.text' section.");
 435     assert (FALSE);
 436   }
 437
 438   mDebugOffset = DebugRvaAlign(mCoffOffset);
 439   mCoffOffset = CoffAlign(mCoffOffset);
 440
 441   if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
 442     Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 text section. Source level debug might not work correctly.", mInImageName);
 443   }
 444
 445   //
 446   //  Then data sections.
 447   //
 448   mDataOffset = mCoffOffset;
 449   FoundSection = FALSE;
 450   SectionCount = 0;
 451   for (i = 0; i < mEhdr->e_shnum; i++) {
 452     Elf_Shdr *shdr = GetShdrByIndex(i);
 453     if (IsDataShdr(shdr)) {
 454       if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
 455         // the alignment field is valid
 456         if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
 457           // if the section address is aligned we must align PE/COFF
 458           mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);
 459         } else {
 460           Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
 461         }
 462       }
 463
 464       //
 465       // Set mDataOffset with the offset of the first '.data' section
 466       //
 467       if (!FoundSection) {
 468         mDataOffset = mCoffOffset;
 469         FoundSection = TRUE;
 470       }
 471
 472       mCoffSectionsOffset[i] = mCoffOffset;
 473       mCoffOffset += shdr->sh_size;
 474       SectionCount ++;
 475     }
 476   }
 477
 478   if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
 479     Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 data section. Source level debug might not work correctly.", mInImageName);
 480   }
 481
 482   //
 483   // Make room for .debug data in .data (or .text if .data is empty) instead of
 484   // putting it in a section of its own. This is explicitly allowed by the
 485   // PE/COFF spec, and prevents bloat in the binary when using large values for
 486   // section alignment.
 487   //
 488   if (SectionCount > 0) {
 489     mDebugOffset = DebugRvaAlign(mCoffOffset);
 490   }
 491   mCoffOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +
 492                 sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +
 493                 strlen(mInImageName) + 1;
 494
 495   mCoffOffset = CoffAlign(mCoffOffset);
 496   if (SectionCount == 0) {
 497     mDataOffset = mCoffOffset;
 498   }
 499
 500   //
 501   //  The HII resource sections.
 502   //
 503   mHiiRsrcOffset = mCoffOffset;
 504   for (i = 0; i < mEhdr->e_shnum; i++) {
 505     Elf_Shdr *shdr = GetShdrByIndex(i);
 506     if (IsHiiRsrcShdr(shdr)) {
 507       if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
 508         // the alignment field is valid
 509         if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
 510           // if the section address is aligned we must align PE/COFF
 511           mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);
 512         } else {
 513           Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
 514         }
 515       }
 516       if (shdr->sh_size != 0) {
 517         mHiiRsrcOffset = mCoffOffset;
 518         mCoffSectionsOffset[i] = mCoffOffset;
 519         mCoffOffset += shdr->sh_size;
 520         mCoffOffset = CoffAlign(mCoffOffset);
 521         SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset);
 522       }
 523       break;
 524     }
 525   }
 526
 527   mRelocOffset = mCoffOffset;
 528
 529   //
 530   // Allocate base Coff file.  Will be expanded later for relocations.
 531   //
 532   mCoffFile = (UINT8 *)malloc(mCoffOffset);
 533   if (mCoffFile == NULL) {
 534     Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
 535   }
 536   assert (mCoffFile != NULL);
 537   memset(mCoffFile, 0, mCoffOffset);
 538
 539   //
 540   // Fill headers.
 541   //
 542   DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile;
 543   DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE;
 544   DosHdr->e_lfanew = mNtHdrOffset;
 545
 546   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset);
 547
 548   NtHdr->Pe32.Signature = EFI_IMAGE_NT_SIGNATURE;
 549
 550   switch (mEhdr->e_machine) {
 551   case EM_386:
 552     NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_IA32;
 553     NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
 554     break;
 555   case EM_ARM:
 556     NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_ARMT;
 557     NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
 558     break;
 559   default:
 560     VerboseMsg ("%s unknown e_machine type %hu. Assume IA-32", mInImageName, mEhdr->e_machine);
 561     NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_IA32;
 562     NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
 563   }
 564
 565   NtHdr->Pe32.FileHeader.NumberOfSections = mCoffNbrSections;
 566   NtHdr->Pe32.FileHeader.TimeDateStamp = (UINT32) time(NULL);
 567   mImageTimeStamp = NtHdr->Pe32.FileHeader.TimeDateStamp;
 568   NtHdr->Pe32.FileHeader.PointerToSymbolTable = 0;
 569   NtHdr->Pe32.FileHeader.NumberOfSymbols = 0;
 570   NtHdr->Pe32.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32.OptionalHeader);
 571   NtHdr->Pe32.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE
 572     | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED
 573     | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED
 574     | EFI_IMAGE_FILE_32BIT_MACHINE;
 575
 576   NtHdr->Pe32.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset;
 577   NtHdr->Pe32.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset;
 578   NtHdr->Pe32.OptionalHeader.SizeOfUninitializedData = 0;
 579   NtHdr->Pe32.OptionalHeader.AddressOfEntryPoint = CoffEntry;
 580
 581   NtHdr->Pe32.OptionalHeader.BaseOfCode = mTextOffset;
 582
 583   NtHdr->Pe32.OptionalHeader.BaseOfData = mDataOffset;
 584   NtHdr->Pe32.OptionalHeader.ImageBase = 0;
 585   NtHdr->Pe32.OptionalHeader.SectionAlignment = mCoffAlignment;
 586   NtHdr->Pe32.OptionalHeader.FileAlignment = mCoffAlignment;
 587   NtHdr->Pe32.OptionalHeader.SizeOfImage = 0;
 588
 589   NtHdr->Pe32.OptionalHeader.SizeOfHeaders = mTextOffset;
 590   NtHdr->Pe32.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;
 591
 592   //
 593   // Section headers.
 594   //
 595   if ((mDataOffset - mTextOffset) > 0) {
 596     CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset,
 597             EFI_IMAGE_SCN_CNT_CODE
 598             | EFI_IMAGE_SCN_MEM_EXECUTE
 599             | EFI_IMAGE_SCN_MEM_READ);
 600   } else {
 601     // Don't make a section of size 0.
 602     NtHdr->Pe32.FileHeader.NumberOfSections--;
 603   }
 604
 605   if ((mHiiRsrcOffset - mDataOffset) > 0) {
 606     CreateSectionHeader (".data", mDataOffset, mHiiRsrcOffset - mDataOffset,
 607             EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
 608             | EFI_IMAGE_SCN_MEM_WRITE
 609             | EFI_IMAGE_SCN_MEM_READ);
 610   } else {
 611     // Don't make a section of size 0.
 612     NtHdr->Pe32.FileHeader.NumberOfSections--;
 613   }
 614
 615   if ((mRelocOffset - mHiiRsrcOffset) > 0) {
 616     CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset,
 617             EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
 618             | EFI_IMAGE_SCN_MEM_READ);
 619
 620     NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset;
 621     NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset;
 622   } else {
 623     // Don't make a section of size 0.
 624     NtHdr->Pe32.FileHeader.NumberOfSections--;
 625   }
 626
 627 }
 628
 629 STATIC
 630 BOOLEAN
 631 WriteSections32 (
 632   SECTION_FILTER_TYPES  FilterType
 633   )
 634 {
 635   UINT32      Idx;
 636   Elf_Shdr    *SecShdr;
 637   UINT32      SecOffset;
 638   BOOLEAN     (*Filter)(Elf_Shdr *);
 639
 640   //
 641   // Initialize filter pointer
 642   //
 643   switch (FilterType) {
 644     case SECTION_TEXT:
 645       Filter = IsTextShdr;
 646       break;
 647     case SECTION_HII:
 648       Filter = IsHiiRsrcShdr;
 649       break;
 650     case SECTION_DATA:
 651       Filter = IsDataShdr;
 652       break;
 653     default:
 654       return FALSE;
 655   }
 656
 657   //
 658   // First: copy sections.
 659   //
 660   for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
 661     Elf_Shdr *Shdr = GetShdrByIndex(Idx);
 662     if ((*Filter)(Shdr)) {
 663       switch (Shdr->sh_type) {
 664       case SHT_PROGBITS:
 665         /* Copy.  */
 666         memcpy(mCoffFile + mCoffSectionsOffset[Idx],
 667               (UINT8*)mEhdr + Shdr->sh_offset,
 668               Shdr->sh_size);
 669         break;
 670
 671       case SHT_NOBITS:
 672         memset(mCoffFile + mCoffSectionsOffset[Idx], 0, Shdr->sh_size);
 673         break;
 674
 675       default:
 676         //
 677         //  Ignore for unkown section type.
 678         //
 679         VerboseMsg ("%s unknown section type %x. We directly copy this section into Coff file", mInImageName, (unsigned)Shdr->sh_type);
 680         break;
 681       }
 682     }
 683   }
 684
 685   //
 686   // Second: apply relocations.
 687   //
 688   for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
 689     //
 690     // Determine if this is a relocation section.
 691     //
 692     Elf_Shdr *RelShdr = GetShdrByIndex(Idx);
 693     if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {
 694       continue;
 695     }
 696
 697     //
 698     // Relocation section found.  Now extract section information that the relocations
 699     // apply to in the ELF data and the new COFF data.
 700     //
 701     SecShdr = GetShdrByIndex(RelShdr->sh_info);
 702     SecOffset = mCoffSectionsOffset[RelShdr->sh_info];
 703
 704     //
 705     // Only process relocations for the current filter type.
 706     //
 707     if (RelShdr->sh_type == SHT_REL && (*Filter)(SecShdr)) {
 708       UINT32 RelOffset;
 709
 710       //
 711       // Determine the symbol table referenced by the relocation data.
 712       //
 713       Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link);
 714       UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;
 715
 716       //
 717       // Process all relocation entries for this section.
 718       //
 719       for (RelOffset = 0; RelOffset < RelShdr->sh_size; RelOffset += RelShdr->sh_entsize) {
 720         //
 721         // Set pointer to relocation entry
 722         //
 723         Elf_Rel *Rel = (Elf_Rel *)((UINT8*)mEhdr + RelShdr->sh_offset + RelOffset);
 724
 725         //
 726         // Set pointer to symbol table entry associated with the relocation entry.
 727         //
 728         Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);
 729
 730         Elf_Shdr *SymShdr;
 731         UINT8 *Targ;
 732         UINT16 Address;
 733
 734         //
 735         // Check section header index found in symbol table and get the section
 736         // header location.
 737         //
 738         if (Sym->st_shndx == SHN_UNDEF
 739             || Sym->st_shndx >= mEhdr->e_shnum) {
 740           const UINT8 *SymName = GetSymName(Sym);
 741           if (SymName == NULL) {
 742             SymName = (const UINT8 *)"<unknown>";
 743           }
 744
 745           Error (NULL, 0, 3000, "Invalid",
 746                  "%s: Bad definition for symbol '%s'@%#x or unsupported symbol type.  "
 747                  "For example, absolute and undefined symbols are not supported.",
 748                  mInImageName, SymName, Sym->st_value);
 749
 750           exit(EXIT_FAILURE);
 751         }
 752         SymShdr = GetShdrByIndex(Sym->st_shndx);
 753
 754         //
 755         // Convert the relocation data to a pointer into the coff file.
 756         //
 757         // Note:
 758         //   r_offset is the virtual address of the storage unit to be relocated.
 759         //   sh_addr is the virtual address for the base of the section.
 760         //
 761         Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr);
 762
 763         //
 764         // Determine how to handle each relocation type based on the machine type.
 765         //
 766         if (mEhdr->e_machine == EM_386) {
 767           switch (ELF_R_TYPE(Rel->r_info)) {
 768           case R_386_NONE:
 769             break;
 770           case R_386_32:
 771             //
 772             // Absolute relocation.
 773             //  Converts Targ from a absolute virtual address to the absolute
 774             //  COFF address.
 775             //
 776             *(UINT32 *)Targ = *(UINT32 *)Targ - SymShdr->sh_addr
 777               + mCoffSectionsOffset[Sym->st_shndx];
 778             break;
 779           case R_386_PC32:
 780             //
 781             // Relative relocation: Symbol - Ip + Addend
 782             //
 783             *(UINT32 *)Targ = *(UINT32 *)Targ
 784               + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr)
 785               - (SecOffset - SecShdr->sh_addr);
 786             break;
 787           default:
 788             Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_386 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
 789           }
 790         } else if (mEhdr->e_machine == EM_ARM) {
 791           switch (ELF32_R_TYPE(Rel->r_info)) {
 792           case R_ARM_RBASE:
 793             // No relocation - no action required
 794             // break skipped
 795
 796           case R_ARM_PC24:
 797           case R_ARM_REL32:
 798           case R_ARM_XPC25:
 799           case R_ARM_THM_PC22:
 800           case R_ARM_THM_JUMP19:
 801           case R_ARM_CALL:
 802           case R_ARM_JMP24:
 803           case R_ARM_THM_JUMP24:
 804           case R_ARM_PREL31:
 805           case R_ARM_MOVW_PREL_NC:
 806           case R_ARM_MOVT_PREL:
 807           case R_ARM_THM_MOVW_PREL_NC:
 808           case R_ARM_THM_MOVT_PREL:
 809           case R_ARM_THM_JMP6:
 810           case R_ARM_THM_ALU_PREL_11_0:
 811           case R_ARM_THM_PC12:
 812           case R_ARM_REL32_NOI:
 813           case R_ARM_ALU_PC_G0_NC:
 814           case R_ARM_ALU_PC_G0:
 815           case R_ARM_ALU_PC_G1_NC:
 816           case R_ARM_ALU_PC_G1:
 817           case R_ARM_ALU_PC_G2:
 818           case R_ARM_LDR_PC_G1:
 819           case R_ARM_LDR_PC_G2:
 820           case R_ARM_LDRS_PC_G0:
 821           case R_ARM_LDRS_PC_G1:
 822           case R_ARM_LDRS_PC_G2:
 823           case R_ARM_LDC_PC_G0:
 824           case R_ARM_LDC_PC_G1:
 825           case R_ARM_LDC_PC_G2:
 826           case R_ARM_GOT_PREL:
 827           case R_ARM_THM_JUMP11:
 828           case R_ARM_THM_JUMP8:
 829           case R_ARM_TLS_GD32:
 830           case R_ARM_TLS_LDM32:
 831           case R_ARM_TLS_IE32:
 832             // Thease are all PC-relative relocations and don't require modification
 833             // GCC does not seem to have the concept of a application that just needs to get relocated.
 834             break;
 835
 836           case R_ARM_THM_MOVW_ABS_NC:
 837             // MOVW is only lower 16-bits of the addres
 838             Address = (UINT16)(Sym->st_value - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);
 839             ThumbMovtImmediatePatch ((UINT16 *)Targ, Address);
 840             break;
 841
 842           case R_ARM_THM_MOVT_ABS:
 843             // MOVT is only upper 16-bits of the addres
 844             Address = (UINT16)((Sym->st_value - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]) >> 16);
 845             ThumbMovtImmediatePatch ((UINT16 *)Targ, Address);
 846             break;
 847
 848           case R_ARM_ABS32:
 849           case R_ARM_RABS32:
 850             //
 851             // Absolute relocation.
 852             //
 853             *(UINT32 *)Targ = *(UINT32 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
 854             break;
 855
 856           default:
 857             Error (NULL, 0, 3000, "Invalid", "WriteSections (): %s unsupported ELF EM_ARM relocation 0x%x.", mInImageName, (unsigned) ELF32_R_TYPE(Rel->r_info));
 858           }
 859         }
 860       }
 861     }
 862   }
 863
 864   return TRUE;
 865 }
 866
 867 UINTN gMovwOffset = 0;
 868
 869 STATIC
 870 VOID
 871 WriteRelocations32 (
 872   VOID
 873   )
 874 {
 875   UINT32                           Index;
 876   EFI_IMAGE_OPTIONAL_HEADER_UNION  *NtHdr;
 877   EFI_IMAGE_DATA_DIRECTORY         *Dir;
 878   BOOLEAN                          FoundRelocations;
 879   Elf_Dyn                          *Dyn;
 880   Elf_Rel                          *Rel;
 881   UINTN                            RelElementSize;
 882   UINTN                            RelSize;
 883   UINTN                            RelOffset;
 884   UINTN                            K;
 885   Elf32_Phdr                       *DynamicSegment;
 886
 887   for (Index = 0, FoundRelocations = FALSE; Index < mEhdr->e_shnum; Index++) {
 888     Elf_Shdr *RelShdr = GetShdrByIndex(Index);
 889     if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) {
 890       Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info);
 891       if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) {
 892         UINT32 RelIdx;
 893
 894         FoundRelocations = TRUE;
 895         for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) {
 896           Rel = (Elf_Rel *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);
 897
 898           if (mEhdr->e_machine == EM_386) {
 899             switch (ELF_R_TYPE(Rel->r_info)) {
 900             case R_386_NONE:
 901             case R_386_PC32:
 902               //
 903               // No fixup entry required.
 904               //
 905               break;
 906             case R_386_32:
 907               //
 908               // Creates a relative relocation entry from the absolute entry.
 909               //
 910               CoffAddFixup(mCoffSectionsOffset[RelShdr->sh_info]
 911               + (Rel->r_offset - SecShdr->sh_addr),
 912               EFI_IMAGE_REL_BASED_HIGHLOW);
 913               break;
 914             default:
 915               Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_386 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
 916             }
 917           } else if (mEhdr->e_machine == EM_ARM) {
 918             switch (ELF32_R_TYPE(Rel->r_info)) {
 919             case R_ARM_RBASE:
 920               // No relocation - no action required
 921               // break skipped
 922
 923             case R_ARM_PC24:
 924             case R_ARM_REL32:
 925             case R_ARM_XPC25:
 926             case R_ARM_THM_PC22:
 927             case R_ARM_THM_JUMP19:
 928             case R_ARM_CALL:
 929             case R_ARM_JMP24:
 930             case R_ARM_THM_JUMP24:
 931             case R_ARM_PREL31:
 932             case R_ARM_MOVW_PREL_NC:
 933             case R_ARM_MOVT_PREL:
 934             case R_ARM_THM_MOVW_PREL_NC:
 935             case R_ARM_THM_MOVT_PREL:
 936             case R_ARM_THM_JMP6:
 937             case R_ARM_THM_ALU_PREL_11_0:
 938             case R_ARM_THM_PC12:
 939             case R_ARM_REL32_NOI:
 940             case R_ARM_ALU_PC_G0_NC:
 941             case R_ARM_ALU_PC_G0:
 942             case R_ARM_ALU_PC_G1_NC:
 943             case R_ARM_ALU_PC_G1:
 944             case R_ARM_ALU_PC_G2:
 945             case R_ARM_LDR_PC_G1:
 946             case R_ARM_LDR_PC_G2:
 947             case R_ARM_LDRS_PC_G0:
 948             case R_ARM_LDRS_PC_G1:
 949             case R_ARM_LDRS_PC_G2:
 950             case R_ARM_LDC_PC_G0:
 951             case R_ARM_LDC_PC_G1:
 952             case R_ARM_LDC_PC_G2:
 953             case R_ARM_GOT_PREL:
 954             case R_ARM_THM_JUMP11:
 955             case R_ARM_THM_JUMP8:
 956             case R_ARM_TLS_GD32:
 957             case R_ARM_TLS_LDM32:
 958             case R_ARM_TLS_IE32:
 959               // Thease are all PC-relative relocations and don't require modification
 960               break;
 961
 962             case R_ARM_THM_MOVW_ABS_NC:
 963               CoffAddFixup (
 964                 mCoffSectionsOffset[RelShdr->sh_info]
 965                 + (Rel->r_offset - SecShdr->sh_addr),
 966                 EFI_IMAGE_REL_BASED_ARM_MOV32T
 967                 );
 968
 969               // PE/COFF treats MOVW/MOVT relocation as single 64-bit instruction
 970               // Track this address so we can log an error for unsupported sequence of MOVW/MOVT
 971               gMovwOffset = mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr);
 972               break;
 973
 974             case R_ARM_THM_MOVT_ABS:
 975               if ((gMovwOffset + 4) !=  (mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr))) {
 976                 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));
 977               }
 978               break;
 979
 980             case R_ARM_ABS32:
 981             case R_ARM_RABS32:
 982               CoffAddFixup (
 983                 mCoffSectionsOffset[RelShdr->sh_info]
 984                 + (Rel->r_offset - SecShdr->sh_addr),
 985                 EFI_IMAGE_REL_BASED_HIGHLOW
 986                 );
 987               break;
 988
 989            default:
 990               Error (NULL, 0, 3000, "Invalid", "WriteRelocations(): %s unsupported ELF EM_ARM relocation 0x%x.", mInImageName, (unsigned) ELF32_R_TYPE(Rel->r_info));
 991             }
 992           } else {
 993             Error (NULL, 0, 3000, "Not Supported", "This tool does not support relocations for ELF with e_machine %u (processor type).", (unsigned) mEhdr->e_machine);
 994           }
 995         }
 996       }
 997     }
 998   }
 999
1000   if (!FoundRelocations && (mEhdr->e_machine == EM_ARM)) {
1001     /* Try again, but look for PT_DYNAMIC instead of SHT_REL */
1002
1003     for (Index = 0; Index < mEhdr->e_phnum; Index++) {
1004       RelElementSize = 0;
1005       RelSize = 0;
1006       RelOffset = 0;
1007
1008       DynamicSegment = GetPhdrByIndex (Index);
1009
1010       if (DynamicSegment->p_type == PT_DYNAMIC) {
1011         Dyn = (Elf32_Dyn *) ((UINT8 *)mEhdr + DynamicSegment->p_offset);
1012
1013         while (Dyn->d_tag != DT_NULL) {
1014           switch (Dyn->d_tag) {
1015             case  DT_REL:
1016               RelOffset = Dyn->d_un.d_val;
1017               break;
1018
1019             case  DT_RELSZ:
1020               RelSize = Dyn->d_un.d_val;
1021               break;
1022
1023             case  DT_RELENT:
1024               RelElementSize = Dyn->d_un.d_val;
1025               break;
1026
1027             default:
1028               break;
1029           }
1030           Dyn++;
1031         }
1032         if (( RelOffset == 0 ) || ( RelSize == 0 ) || ( RelElementSize == 0 )) {
1033           Error (NULL, 0, 3000, "Invalid", "%s bad ARM dynamic relocations.", mInImageName);
1034         }
1035
1036         for (Index = 0; Index < mEhdr->e_shnum; Index++) {
1037           Elf_Shdr *shdr = GetShdrByIndex(Index);
1038
1039           //
1040           // The PT_DYNAMIC section contains DT_REL relocations whose r_offset
1041           // field is relative to the base of a segment (or the entire image),
1042           // and not to the base of an ELF input section as is the case for
1043           // SHT_REL sections. This means that we cannot fix up such relocations
1044           // unless we cross-reference ELF sections and segments, considering
1045           // that the output placement recorded in mCoffSectionsOffset[] is
1046           // section based, not segment based.
1047           //
1048           // Fortunately, there is a simple way around this: we require that the
1049           // in-memory layout of the ELF and PE/COFF versions of the binary is
1050           // identical. That way, r_offset will retain its validity as a PE/COFF
1051           // image offset, and we can record it in the COFF fixup table
1052           // unmodified.
1053           //
1054           if (shdr->sh_addr != mCoffSectionsOffset[Index]) {
1055             Error (NULL, 0, 3000,
1056               "Invalid", "%s: PT_DYNAMIC relocations require identical ELF and PE/COFF section offsets.",
1057               mInImageName);
1058           }
1059         }
1060
1061         for (K = 0; K < RelSize; K += RelElementSize) {
1062
1063           if (DynamicSegment->p_paddr == 0) {
1064             // Older versions of the ARM ELF (SWS ESPC 0003 B-02) specification define DT_REL
1065             // as an offset in the dynamic segment. p_paddr is defined to be zero for ARM tools
1066             Rel = (Elf32_Rel *) ((UINT8 *) mEhdr + DynamicSegment->p_offset + RelOffset + K);
1067           } else {
1068             // This is how it reads in the generic ELF specification
1069             Rel = (Elf32_Rel *) ((UINT8 *) mEhdr + RelOffset + K);
1070           }
1071
1072           switch (ELF32_R_TYPE (Rel->r_info)) {
1073           case  R_ARM_RBASE:
1074             break;
1075
1076           case  R_ARM_RABS32:
1077             CoffAddFixup (Rel->r_offset, EFI_IMAGE_REL_BASED_HIGHLOW);
1078             break;
1079
1080           default:
1081             Error (NULL, 0, 3000, "Invalid", "%s bad ARM dynamic relocations, unkown type %d.", mInImageName, ELF32_R_TYPE (Rel->r_info));
1082             break;
1083           }
1084         }
1085         break;
1086       }
1087     }
1088   }
1089
1090   //
1091   // Pad by adding empty entries.
1092   //
1093   while (mCoffOffset & (mCoffAlignment - 1)) {
1094     CoffAddFixupEntry(0);
1095   }
1096
1097   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
1098   Dir = &NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];
1099   Dir->Size = mCoffOffset - mRelocOffset;
1100   if (Dir->Size == 0) {
1101     // If no relocations, null out the directory entry and don't add the .reloc section
1102     Dir->VirtualAddress = 0;
1103     NtHdr->Pe32.FileHeader.NumberOfSections--;
1104   } else {
1105     Dir->VirtualAddress = mRelocOffset;
1106     CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset,
1107             EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
1108             | EFI_IMAGE_SCN_MEM_DISCARDABLE
1109             | EFI_IMAGE_SCN_MEM_READ);
1110   }
1111
1112 }
1113
1114 STATIC
1115 VOID
1116 WriteDebug32 (
1117   VOID
1118   )
1119 {
1120   UINT32                              Len;
1121   EFI_IMAGE_OPTIONAL_HEADER_UNION     *NtHdr;
1122   EFI_IMAGE_DATA_DIRECTORY            *DataDir;
1123   EFI_IMAGE_DEBUG_DIRECTORY_ENTRY     *Dir;
1124   EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10;
1125
1126   Len = strlen(mInImageName) + 1;
1127
1128   Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + mDebugOffset);
1129   Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW;
1130   Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len;
1131   Dir->RVA = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
1132   Dir->FileOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
1133
1134   Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1);
1135   Nb10->Signature = CODEVIEW_SIGNATURE_NB10;
1136   strcpy ((char *)(Nb10 + 1), mInImageName);
1137
1138
1139   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
1140   DataDir = &NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG];
1141   DataDir->VirtualAddress = mDebugOffset;
1142   DataDir->Size = Dir->SizeOfData + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
1143 }
1144
1145 STATIC
1146 VOID
1147 SetImageSize32 (
1148   VOID
1149   )
1150 {
1151   EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
1152
1153   //
1154   // Set image size
1155   //
1156   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
1157   NtHdr->Pe32.OptionalHeader.SizeOfImage = mCoffOffset;
1158 }
1159
1160 STATIC
1161 VOID
1162 CleanUp32 (
1163   VOID
1164   )
1165 {
1166   if (mCoffSectionsOffset != NULL) {
1167     free (mCoffSectionsOffset);
1168   }
1169 }
1170
1171