BaseTools/Source/C/GenFw/Elf32Convert.c

   1 /** @file
   2 Elf32 Convert solution
   3
   4 Copyright (c) 2010 - 2017, 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 <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <time.h>
  28 #include <ctype.h>
  29
  30 #include <Common/UefiBaseTypes.h>
  31 #include <IndustryStandard/PeImage.h>
  32
  33 #include "PeCoffLib.h"
  34 #include "EfiUtilityMsgs.h"
  35
  36 #include "GenFw.h"
  37 #include "ElfConvert.h"
  38 #include "Elf32Convert.h"
  39
  40 STATIC
  41 VOID
  42 ScanSections32 (
  43   VOID
  44   );
  45
  46 STATIC
  47 BOOLEAN
  48 WriteSections32 (
  49   SECTION_FILTER_TYPES  FilterType
  50   );
  51
  52 STATIC
  53 VOID
  54 WriteRelocations32 (
  55   VOID
  56   );
  57
  58 STATIC
  59 VOID
  60 WriteDebug32 (
  61   VOID
  62   );
  63
  64 STATIC
  65 VOID
  66 SetImageSize32 (
  67   VOID
  68   );
  69
  70 STATIC
  71 VOID
  72 CleanUp32 (
  73   VOID
  74   );
  75
  76 //
  77 // Rename ELF32 strucutres to common names to help when porting to ELF64.
  78 //
  79 typedef Elf32_Shdr Elf_Shdr;
  80 typedef Elf32_Ehdr Elf_Ehdr;
  81 typedef Elf32_Rel Elf_Rel;
  82 typedef Elf32_Sym Elf_Sym;
  83 typedef Elf32_Phdr Elf_Phdr;
  84 typedef Elf32_Dyn Elf_Dyn;
  85 #define ELFCLASS ELFCLASS32
  86 #define ELF_R_TYPE(r) ELF32_R_TYPE(r)
  87 #define ELF_R_SYM(r) ELF32_R_SYM(r)
  88
  89 //
  90 // Well known ELF structures.
  91 //
  92 STATIC Elf_Ehdr *mEhdr;
  93 STATIC Elf_Shdr *mShdrBase;
  94 STATIC Elf_Phdr *mPhdrBase;
  95
  96 //
  97 // Coff information
  98 //
  99 STATIC UINT32 mCoffAlignment = 0x20;
 100
 101 //
 102 // PE section alignment.
 103 //
 104 STATIC const UINT16 mCoffNbrSections = 4;
 105
 106 //
 107 // ELF sections to offset in Coff file.
 108 //
 109 STATIC UINT32 *mCoffSectionsOffset = NULL;
 110
 111 //
 112 // Offsets in COFF file
 113 //
 114 STATIC UINT32 mNtHdrOffset;
 115 STATIC UINT32 mTextOffset;
 116 STATIC UINT32 mDataOffset;
 117 STATIC UINT32 mHiiRsrcOffset;
 118 STATIC UINT32 mRelocOffset;
 119 STATIC UINT32 mDebugOffset;
 120
 121 //
 122 // Initialization Function
 123 //
 124 BOOLEAN
 125 InitializeElf32 (
 126   UINT8               *FileBuffer,
 127   ELF_FUNCTION_TABLE  *ElfFunctions
 128   )
 129 {
 130   //
 131   // Initialize data pointer and structures.
 132   //
 133   mEhdr = (Elf_Ehdr*) FileBuffer;
 134
 135   //
 136   // Check the ELF32 specific header information.
 137   //
 138   if (mEhdr->e_ident[EI_CLASS] != ELFCLASS32) {
 139     Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS32");
 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   }
 150   if (!((mEhdr->e_machine == EM_386) || (mEhdr->e_machine == EM_ARM))) {
 151     Error (NULL, 0, 3000, "Unsupported", "ELF e_machine not EM_386 or EM_ARM");
 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   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   mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32));
 169   if (mCoffSectionsOffset == NULL) {
 170     Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
 171     return FALSE;
 172   }
 173   memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32));
 174
 175   //
 176   // Fill in function pointers.
 177   //
 178   ElfFunctions->ScanSections = ScanSections32;
 179   ElfFunctions->WriteSections = WriteSections32;
 180   ElfFunctions->WriteRelocations = WriteRelocations32;
 181   ElfFunctions->WriteDebug = WriteDebug32;
 182   ElfFunctions->SetImageSize = SetImageSize32;
 183   ElfFunctions->CleanUp = CleanUp32;
 184
 185   return TRUE;
 186 }
 187
 188
 189 //
 190 // Header by Index functions
 191 //
 192 STATIC
 193 Elf_Shdr*
 194 GetShdrByIndex (
 195   UINT32 Num
 196   )
 197 {
 198   if (Num >= mEhdr->e_shnum) {
 199     Error (NULL, 0, 3000, "Invalid", "GetShdrByIndex: Index %u is too high.", Num);
 200     exit(EXIT_FAILURE);
 201   }
 202
 203   return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize);
 204 }
 205
 206 STATIC
 207 Elf_Phdr*
 208 GetPhdrByIndex (
 209   UINT32 num
 210   )
 211 {
 212   if (num >= mEhdr->e_phnum) {
 213     Error (NULL, 0, 3000, "Invalid", "GetPhdrByIndex: Index %u is too high.", num);
 214     exit(EXIT_FAILURE);
 215   }
 216
 217   return (Elf_Phdr *)((UINT8*)mPhdrBase + num * mEhdr->e_phentsize);
 218 }
 219
 220 STATIC
 221 UINT32
 222 CoffAlign (
 223   UINT32 Offset
 224   )
 225 {
 226   return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1);
 227 }
 228
 229 STATIC
 230 UINT32
 231 DebugRvaAlign (
 232   UINT32 Offset
 233   )
 234 {
 235   return (Offset + 3) & ~3;
 236 }
 237
 238 //
 239 // filter functions
 240 //
 241 STATIC
 242 BOOLEAN
 243 IsTextShdr (
 244   Elf_Shdr *Shdr
 245   )
 246 {
 247   return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC);
 248 }
 249
 250 STATIC
 251 BOOLEAN
 252 IsHiiRsrcShdr (
 253   Elf_Shdr *Shdr
 254   )
 255 {
 256   Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
 257
 258   return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0);
 259 }
 260
 261 STATIC
 262 BOOLEAN
 263 IsDataShdr (
 264   Elf_Shdr *Shdr
 265   )
 266 {
 267   if (IsHiiRsrcShdr(Shdr)) {
 268     return FALSE;
 269   }
 270   return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE);
 271 }
 272
 273 STATIC
 274 BOOLEAN
 275 IsStrtabShdr (
 276   Elf_Shdr *Shdr
 277   )
 278 {
 279   Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
 280
 281   return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_STRTAB_SECTION_NAME) == 0);
 282 }
 283
 284 STATIC
 285 Elf_Shdr *
 286 FindStrtabShdr (
 287   VOID
 288   )
 289 {
 290   UINT32 i;
 291   for (i = 0; i < mEhdr->e_shnum; i++) {
 292     Elf_Shdr *shdr = GetShdrByIndex(i);
 293     if (IsStrtabShdr(shdr)) {
 294       return shdr;
 295     }
 296   }
 297   return NULL;
 298 }
 299
 300 STATIC
 301 const UINT8 *
 302 GetSymName (
 303   Elf_Sym *Sym
 304   )
 305 {
 306   Elf_Shdr *StrtabShdr;
 307   UINT8    *StrtabContents;
 308   BOOLEAN  foundEnd;
 309   UINT32   i;
 310
 311   if (Sym->st_name == 0) {
 312     return NULL;
 313   }
 314
 315   StrtabShdr = FindStrtabShdr();
 316   if (StrtabShdr == NULL) {
 317     return NULL;
 318   }
 319
 320   assert(Sym->st_name < StrtabShdr->sh_size);
 321
 322   StrtabContents = (UINT8*)mEhdr + StrtabShdr->sh_offset;
 323
 324   foundEnd = FALSE;
 325   for (i = Sym->st_name; (i < StrtabShdr->sh_size) && !foundEnd; i++) {
 326     foundEnd = (BOOLEAN)(StrtabContents[i] == 0);
 327   }
 328   assert(foundEnd);
 329
 330   return StrtabContents + Sym->st_name;
 331 }
 332
 333 //
 334 // Elf functions interface implementation
 335 //
 336
 337 STATIC
 338 VOID
 339 ScanSections32 (
 340   VOID
 341   )
 342 {
 343   UINT32                          i;
 344   EFI_IMAGE_DOS_HEADER            *DosHdr;
 345   EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
 346   UINT32                          CoffEntry;
 347   UINT32                          SectionCount;
 348   BOOLEAN                         FoundSection;
 349
 350   CoffEntry = 0;
 351   mCoffOffset = 0;
 352
 353   //
 354   // Coff file start with a DOS header.
 355   //
 356   mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40;
 357   mNtHdrOffset = mCoffOffset;
 358   switch (mEhdr->e_machine) {
 359   case EM_386:
 360   case EM_ARM:
 361     mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS32);
 362   break;
 363   default:
 364     VerboseMsg ("%s unknown e_machine type. Assume IA-32", (UINTN)mEhdr->e_machine);
 365     mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS32);
 366   break;
 367   }
 368
 369   mTableOffset = mCoffOffset;
 370   mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER);
 371
 372   //
 373   // Set mCoffAlignment to the maximum alignment of the input sections
 374   // we care about
 375   //
 376   for (i = 0; i < mEhdr->e_shnum; i++) {
 377     Elf_Shdr *shdr = GetShdrByIndex(i);
 378     if (shdr->sh_addralign <= mCoffAlignment) {
 379       continue;
 380     }
 381     if (IsTextShdr(shdr) || IsDataShdr(shdr) || IsHiiRsrcShdr(shdr)) {
 382       mCoffAlignment = (UINT32)shdr->sh_addralign;
 383     }
 384   }
 385
 386   //
 387   // Move the PE/COFF header right before the first section. This will help us
 388   // save space when converting to TE.
 389   //
 390   if (mCoffAlignment > mCoffOffset) {
 391     mNtHdrOffset += mCoffAlignment - mCoffOffset;
 392     mTableOffset += mCoffAlignment - mCoffOffset;
 393     mCoffOffset = mCoffAlignment;
 394   }
 395
 396   //
 397   // First text sections.
 398   //
 399   mCoffOffset = CoffAlign(mCoffOffset);
 400   mTextOffset = mCoffOffset;
 401   FoundSection = FALSE;
 402   SectionCount = 0;
 403   for (i = 0; i < mEhdr->e_shnum; i++) {
 404     Elf_Shdr *shdr = GetShdrByIndex(i);
 405     if (IsTextShdr(shdr)) {
 406       if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
 407         // the alignment field is valid
 408         if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
 409           // if the section address is aligned we must align PE/COFF
 410           mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);
 411         } else {
 412           Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
 413         }
 414       }
 415
 416       /* Relocate entry.  */
 417       if ((mEhdr->e_entry >= shdr->sh_addr) &&
 418           (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) {
 419         CoffEntry = mCoffOffset + mEhdr->e_entry - shdr->sh_addr;
 420       }
 421
 422       //
 423       // Set mTextOffset with the offset of the first '.text' section
 424       //
 425       if (!FoundSection) {
 426         mTextOffset = mCoffOffset;
 427         FoundSection = TRUE;
 428       }
 429
 430       mCoffSectionsOffset[i] = mCoffOffset;
 431       mCoffOffset += shdr->sh_size;
 432       SectionCount ++;
 433     }
 434   }
 435
 436   if (!FoundSection) {
 437     Error (NULL, 0, 3000, "Invalid", "Did not find any '.text' section.");
 438     assert (FALSE);
 439   }
 440
 441   mDebugOffset = DebugRvaAlign(mCoffOffset);
 442   mCoffOffset = CoffAlign(mCoffOffset);
 443
 444   if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
 445     Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 text section. Source level debug might not work correctly.", mInImageName);
 446   }
 447
 448   //
 449   //  Then data sections.
 450   //
 451   mDataOffset = mCoffOffset;
 452   FoundSection = FALSE;
 453   SectionCount = 0;
 454   for (i = 0; i < mEhdr->e_shnum; i++) {
 455     Elf_Shdr *shdr = GetShdrByIndex(i);
 456     if (IsDataShdr(shdr)) {
 457       if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
 458         // the alignment field is valid
 459         if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
 460           // if the section address is aligned we must align PE/COFF
 461           mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);
 462         } else {
 463           Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
 464         }
 465       }
 466
 467       //
 468       // Set mDataOffset with the offset of the first '.data' section
 469       //
 470       if (!FoundSection) {
 471         mDataOffset = mCoffOffset;
 472         FoundSection = TRUE;
 473       }
 474
 475       mCoffSectionsOffset[i] = mCoffOffset;
 476       mCoffOffset += shdr->sh_size;
 477       SectionCount ++;
 478     }
 479   }
 480
 481   if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
 482     Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 data section. Source level debug might not work correctly.", mInImageName);
 483   }
 484
 485   //
 486   // Make room for .debug data in .data (or .text if .data is empty) instead of
 487   // putting it in a section of its own. This is explicitly allowed by the
 488   // PE/COFF spec, and prevents bloat in the binary when using large values for
 489   // section alignment.
 490   //
 491   if (SectionCount > 0) {
 492     mDebugOffset = DebugRvaAlign(mCoffOffset);
 493   }
 494   mCoffOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +
 495                 sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +
 496                 strlen(mInImageName) + 1;
 497
 498   mCoffOffset = CoffAlign(mCoffOffset);
 499   if (SectionCount == 0) {
 500     mDataOffset = mCoffOffset;
 501   }
 502
 503   //
 504   //  The HII resource sections.
 505   //
 506   mHiiRsrcOffset = mCoffOffset;
 507   for (i = 0; i < mEhdr->e_shnum; i++) {
 508     Elf_Shdr *shdr = GetShdrByIndex(i);
 509     if (IsHiiRsrcShdr(shdr)) {
 510       if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
 511         // the alignment field is valid
 512         if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
 513           // if the section address is aligned we must align PE/COFF
 514           mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);
 515         } else {
 516           Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
 517         }
 518       }
 519       if (shdr->sh_size != 0) {
 520         mHiiRsrcOffset = mCoffOffset;
 521         mCoffSectionsOffset[i] = mCoffOffset;
 522         mCoffOffset += shdr->sh_size;
 523         mCoffOffset = CoffAlign(mCoffOffset);
 524         SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset);
 525       }
 526       break;
 527     }
 528   }
 529
 530   mRelocOffset = mCoffOffset;
 531
 532   //
 533   // Allocate base Coff file.  Will be expanded later for relocations.
 534   //
 535   mCoffFile = (UINT8 *)malloc(mCoffOffset);
 536   if (mCoffFile == NULL) {
 537     Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
 538   }
 539   assert (mCoffFile != NULL);
 540   memset(mCoffFile, 0, mCoffOffset);
 541
 542   //
 543   // Fill headers.
 544   //
 545   DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile;
 546   DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE;
 547   DosHdr->e_lfanew = mNtHdrOffset;
 548
 549   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset);
 550
 551   NtHdr->Pe32.Signature = EFI_IMAGE_NT_SIGNATURE;
 552
 553   switch (mEhdr->e_machine) {
 554   case EM_386:
 555     NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_IA32;
 556     NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
 557     break;
 558   case EM_ARM:
 559     NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_ARMT;
 560     NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
 561     break;
 562   default:
 563     VerboseMsg ("%s unknown e_machine type %hu. Assume IA-32", mInImageName, mEhdr->e_machine);
 564     NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_IA32;
 565     NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
 566   }
 567
 568   NtHdr->Pe32.FileHeader.NumberOfSections = mCoffNbrSections;
 569   NtHdr->Pe32.FileHeader.TimeDateStamp = (UINT32) time(NULL);
 570   mImageTimeStamp = NtHdr->Pe32.FileHeader.TimeDateStamp;
 571   NtHdr->Pe32.FileHeader.PointerToSymbolTable = 0;
 572   NtHdr->Pe32.FileHeader.NumberOfSymbols = 0;
 573   NtHdr->Pe32.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32.OptionalHeader);
 574   NtHdr->Pe32.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE
 575     | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED
 576     | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED
 577     | EFI_IMAGE_FILE_32BIT_MACHINE;
 578
 579   NtHdr->Pe32.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset;
 580   NtHdr->Pe32.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset;
 581   NtHdr->Pe32.OptionalHeader.SizeOfUninitializedData = 0;
 582   NtHdr->Pe32.OptionalHeader.AddressOfEntryPoint = CoffEntry;
 583
 584   NtHdr->Pe32.OptionalHeader.BaseOfCode = mTextOffset;
 585
 586   NtHdr->Pe32.OptionalHeader.BaseOfData = mDataOffset;
 587   NtHdr->Pe32.OptionalHeader.ImageBase = 0;
 588   NtHdr->Pe32.OptionalHeader.SectionAlignment = mCoffAlignment;
 589   NtHdr->Pe32.OptionalHeader.FileAlignment = mCoffAlignment;
 590   NtHdr->Pe32.OptionalHeader.SizeOfImage = 0;
 591
 592   NtHdr->Pe32.OptionalHeader.SizeOfHeaders = mTextOffset;
 593   NtHdr->Pe32.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;
 594
 595   //
 596   // Section headers.
 597   //
 598   if ((mDataOffset - mTextOffset) > 0) {
 599     CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset,
 600             EFI_IMAGE_SCN_CNT_CODE
 601             | EFI_IMAGE_SCN_MEM_EXECUTE
 602             | EFI_IMAGE_SCN_MEM_READ);
 603   } else {
 604     // Don't make a section of size 0.
 605     NtHdr->Pe32.FileHeader.NumberOfSections--;
 606   }
 607
 608   if ((mHiiRsrcOffset - mDataOffset) > 0) {
 609     CreateSectionHeader (".data", mDataOffset, mHiiRsrcOffset - mDataOffset,
 610             EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
 611             | EFI_IMAGE_SCN_MEM_WRITE
 612             | EFI_IMAGE_SCN_MEM_READ);
 613   } else {
 614     // Don't make a section of size 0.
 615     NtHdr->Pe32.FileHeader.NumberOfSections--;
 616   }
 617
 618   if ((mRelocOffset - mHiiRsrcOffset) > 0) {
 619     CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset,
 620             EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
 621             | EFI_IMAGE_SCN_MEM_READ);
 622
 623     NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset;
 624     NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset;
 625   } else {
 626     // Don't make a section of size 0.
 627     NtHdr->Pe32.FileHeader.NumberOfSections--;
 628   }
 629
 630 }
 631
 632 STATIC
 633 BOOLEAN
 634 WriteSections32 (
 635   SECTION_FILTER_TYPES  FilterType
 636   )
 637 {
 638   UINT32      Idx;
 639   Elf_Shdr    *SecShdr;
 640   UINT32      SecOffset;
 641   BOOLEAN     (*Filter)(Elf_Shdr *);
 642
 643   //
 644   // Initialize filter pointer
 645   //
 646   switch (FilterType) {
 647     case SECTION_TEXT:
 648       Filter = IsTextShdr;
 649       break;
 650     case SECTION_HII:
 651       Filter = IsHiiRsrcShdr;
 652       break;
 653     case SECTION_DATA:
 654       Filter = IsDataShdr;
 655       break;
 656     default:
 657       return FALSE;
 658   }
 659
 660   //
 661   // First: copy sections.
 662   //
 663   for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
 664     Elf_Shdr *Shdr = GetShdrByIndex(Idx);
 665     if ((*Filter)(Shdr)) {
 666       switch (Shdr->sh_type) {
 667       case SHT_PROGBITS:
 668         /* Copy.  */
 669         memcpy(mCoffFile + mCoffSectionsOffset[Idx],
 670               (UINT8*)mEhdr + Shdr->sh_offset,
 671               Shdr->sh_size);
 672         break;
 673
 674       case SHT_NOBITS:
 675         memset(mCoffFile + mCoffSectionsOffset[Idx], 0, Shdr->sh_size);
 676         break;
 677
 678       default:
 679         //
 680         //  Ignore for unkown section type.
 681         //
 682         VerboseMsg ("%s unknown section type %x. We directly copy this section into Coff file", mInImageName, (unsigned)Shdr->sh_type);
 683         break;
 684       }
 685     }
 686   }
 687
 688   //
 689   // Second: apply relocations.
 690   //
 691   for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
 692     //
 693     // Determine if this is a relocation section.
 694     //
 695     Elf_Shdr *RelShdr = GetShdrByIndex(Idx);
 696     if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {
 697       continue;
 698     }
 699
 700     //
 701     // Relocation section found.  Now extract section information that the relocations
 702     // apply to in the ELF data and the new COFF data.
 703     //
 704     SecShdr = GetShdrByIndex(RelShdr->sh_info);
 705     SecOffset = mCoffSectionsOffset[RelShdr->sh_info];
 706
 707     //
 708     // Only process relocations for the current filter type.
 709     //
 710     if (RelShdr->sh_type == SHT_REL && (*Filter)(SecShdr)) {
 711       UINT32 RelOffset;
 712
 713       //
 714       // Determine the symbol table referenced by the relocation data.
 715       //
 716       Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link);
 717       UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;
 718
 719       //
 720       // Process all relocation entries for this section.
 721       //
 722       for (RelOffset = 0; RelOffset < RelShdr->sh_size; RelOffset += RelShdr->sh_entsize) {
 723         //
 724         // Set pointer to relocation entry
 725         //
 726         Elf_Rel *Rel = (Elf_Rel *)((UINT8*)mEhdr + RelShdr->sh_offset + RelOffset);
 727
 728         //
 729         // Set pointer to symbol table entry associated with the relocation entry.
 730         //
 731         Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);
 732
 733         Elf_Shdr *SymShdr;
 734         UINT8 *Targ;
 735         UINT16 Address;
 736
 737         //
 738         // Check section header index found in symbol table and get the section
 739         // header location.
 740         //
 741         if (Sym->st_shndx == SHN_UNDEF
 742             || Sym->st_shndx >= mEhdr->e_shnum) {
 743           const UINT8 *SymName = GetSymName(Sym);
 744           if (SymName == NULL) {
 745             SymName = (const UINT8 *)"<unknown>";
 746           }
 747
 748           Error (NULL, 0, 3000, "Invalid",
 749                  "%s: Bad definition for symbol '%s'@%#x or unsupported symbol type.  "
 750                  "For example, absolute and undefined symbols are not supported.",
 751                  mInImageName, SymName, Sym->st_value);
 752
 753           exit(EXIT_FAILURE);
 754         }
 755         SymShdr = GetShdrByIndex(Sym->st_shndx);
 756
 757         //
 758         // Convert the relocation data to a pointer into the coff file.
 759         //
 760         // Note:
 761         //   r_offset is the virtual address of the storage unit to be relocated.
 762         //   sh_addr is the virtual address for the base of the section.
 763         //
 764         Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr);
 765
 766         //
 767         // Determine how to handle each relocation type based on the machine type.
 768         //
 769         if (mEhdr->e_machine == EM_386) {
 770           switch (ELF_R_TYPE(Rel->r_info)) {
 771           case R_386_NONE:
 772             break;
 773           case R_386_32:
 774             //
 775             // Absolute relocation.
 776             //  Converts Targ from a absolute virtual address to the absolute
 777             //  COFF address.
 778             //
 779             *(UINT32 *)Targ = *(UINT32 *)Targ - SymShdr->sh_addr
 780               + mCoffSectionsOffset[Sym->st_shndx];
 781             break;
 782           case R_386_PC32:
 783             //
 784             // Relative relocation: Symbol - Ip + Addend
 785             //
 786             *(UINT32 *)Targ = *(UINT32 *)Targ
 787               + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr)
 788               - (SecOffset - SecShdr->sh_addr);
 789             break;
 790           default:
 791             Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_386 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
 792           }
 793         } else if (mEhdr->e_machine == EM_ARM) {
 794           switch (ELF32_R_TYPE(Rel->r_info)) {
 795           case R_ARM_RBASE:
 796             // No relocation - no action required
 797             // break skipped
 798
 799           case R_ARM_PC24:
 800           case R_ARM_REL32:
 801           case R_ARM_XPC25:
 802           case R_ARM_THM_PC22:
 803           case R_ARM_THM_JUMP19:
 804           case R_ARM_CALL:
 805           case R_ARM_JMP24:
 806           case R_ARM_THM_JUMP24:
 807           case R_ARM_PREL31:
 808           case R_ARM_MOVW_PREL_NC:
 809           case R_ARM_MOVT_PREL:
 810           case R_ARM_THM_MOVW_PREL_NC:
 811           case R_ARM_THM_MOVT_PREL:
 812           case R_ARM_THM_JMP6:
 813           case R_ARM_THM_ALU_PREL_11_0:
 814           case R_ARM_THM_PC12:
 815           case R_ARM_REL32_NOI:
 816           case R_ARM_ALU_PC_G0_NC:
 817           case R_ARM_ALU_PC_G0:
 818           case R_ARM_ALU_PC_G1_NC:
 819           case R_ARM_ALU_PC_G1:
 820           case R_ARM_ALU_PC_G2:
 821           case R_ARM_LDR_PC_G1:
 822           case R_ARM_LDR_PC_G2:
 823           case R_ARM_LDRS_PC_G0:
 824           case R_ARM_LDRS_PC_G1:
 825           case R_ARM_LDRS_PC_G2:
 826           case R_ARM_LDC_PC_G0:
 827           case R_ARM_LDC_PC_G1:
 828           case R_ARM_LDC_PC_G2:
 829           case R_ARM_GOT_PREL:
 830           case R_ARM_THM_JUMP11:
 831           case R_ARM_THM_JUMP8:
 832           case R_ARM_TLS_GD32:
 833           case R_ARM_TLS_LDM32:
 834           case R_ARM_TLS_IE32:
 835             // Thease are all PC-relative relocations and don't require modification
 836             // GCC does not seem to have the concept of a application that just needs to get relocated.
 837             break;
 838
 839           case R_ARM_THM_MOVW_ABS_NC:
 840             // MOVW is only lower 16-bits of the addres
 841             Address = (UINT16)(Sym->st_value - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);
 842             ThumbMovtImmediatePatch ((UINT16 *)Targ, Address);
 843             break;
 844
 845           case R_ARM_THM_MOVT_ABS:
 846             // MOVT is only upper 16-bits of the addres
 847             Address = (UINT16)((Sym->st_value - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]) >> 16);
 848             ThumbMovtImmediatePatch ((UINT16 *)Targ, Address);
 849             break;
 850
 851           case R_ARM_ABS32:
 852           case R_ARM_RABS32:
 853             //
 854             // Absolute relocation.
 855             //
 856             *(UINT32 *)Targ = *(UINT32 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
 857             break;
 858
 859           default:
 860             Error (NULL, 0, 3000, "Invalid", "WriteSections (): %s unsupported ELF EM_ARM relocation 0x%x.", mInImageName, (unsigned) ELF32_R_TYPE(Rel->r_info));
 861           }
 862         }
 863       }
 864     }
 865   }
 866
 867   return TRUE;
 868 }
 869
 870 UINTN gMovwOffset = 0;
 871
 872 STATIC
 873 VOID
 874 WriteRelocations32 (
 875   VOID
 876   )
 877 {
 878   UINT32                           Index;
 879   EFI_IMAGE_OPTIONAL_HEADER_UNION  *NtHdr;
 880   EFI_IMAGE_DATA_DIRECTORY         *Dir;
 881   BOOLEAN                          FoundRelocations;
 882   Elf_Dyn                          *Dyn;
 883   Elf_Rel                          *Rel;
 884   UINTN                            RelElementSize;
 885   UINTN                            RelSize;
 886   UINTN                            RelOffset;
 887   UINTN                            K;
 888   Elf32_Phdr                       *DynamicSegment;
 889
 890   for (Index = 0, FoundRelocations = FALSE; Index < mEhdr->e_shnum; Index++) {
 891     Elf_Shdr *RelShdr = GetShdrByIndex(Index);
 892     if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) {
 893       Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info);
 894       if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) {
 895         UINT32 RelIdx;
 896
 897         FoundRelocations = TRUE;
 898         for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) {
 899           Rel = (Elf_Rel *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);
 900
 901           if (mEhdr->e_machine == EM_386) {
 902             switch (ELF_R_TYPE(Rel->r_info)) {
 903             case R_386_NONE:
 904             case R_386_PC32:
 905               //
 906               // No fixup entry required.
 907               //
 908               break;
 909             case R_386_32:
 910               //
 911               // Creates a relative relocation entry from the absolute entry.
 912               //
 913               CoffAddFixup(mCoffSectionsOffset[RelShdr->sh_info]
 914               + (Rel->r_offset - SecShdr->sh_addr),
 915               EFI_IMAGE_REL_BASED_HIGHLOW);
 916               break;
 917             default:
 918               Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_386 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
 919             }
 920           } else if (mEhdr->e_machine == EM_ARM) {
 921             switch (ELF32_R_TYPE(Rel->r_info)) {
 922             case R_ARM_RBASE:
 923               // No relocation - no action required
 924               // break skipped
 925
 926             case R_ARM_PC24:
 927             case R_ARM_REL32:
 928             case R_ARM_XPC25:
 929             case R_ARM_THM_PC22:
 930             case R_ARM_THM_JUMP19:
 931             case R_ARM_CALL:
 932             case R_ARM_JMP24:
 933             case R_ARM_THM_JUMP24:
 934             case R_ARM_PREL31:
 935             case R_ARM_MOVW_PREL_NC:
 936             case R_ARM_MOVT_PREL:
 937             case R_ARM_THM_MOVW_PREL_NC:
 938             case R_ARM_THM_MOVT_PREL:
 939             case R_ARM_THM_JMP6:
 940             case R_ARM_THM_ALU_PREL_11_0:
 941             case R_ARM_THM_PC12:
 942             case R_ARM_REL32_NOI:
 943             case R_ARM_ALU_PC_G0_NC:
 944             case R_ARM_ALU_PC_G0:
 945             case R_ARM_ALU_PC_G1_NC:
 946             case R_ARM_ALU_PC_G1:
 947             case R_ARM_ALU_PC_G2:
 948             case R_ARM_LDR_PC_G1:
 949             case R_ARM_LDR_PC_G2:
 950             case R_ARM_LDRS_PC_G0:
 951             case R_ARM_LDRS_PC_G1:
 952             case R_ARM_LDRS_PC_G2:
 953             case R_ARM_LDC_PC_G0:
 954             case R_ARM_LDC_PC_G1:
 955             case R_ARM_LDC_PC_G2:
 956             case R_ARM_GOT_PREL:
 957             case R_ARM_THM_JUMP11:
 958             case R_ARM_THM_JUMP8:
 959             case R_ARM_TLS_GD32:
 960             case R_ARM_TLS_LDM32:
 961             case R_ARM_TLS_IE32:
 962               // Thease are all PC-relative relocations and don't require modification
 963               break;
 964
 965             case R_ARM_THM_MOVW_ABS_NC:
 966               CoffAddFixup (
 967                 mCoffSectionsOffset[RelShdr->sh_info]
 968                 + (Rel->r_offset - SecShdr->sh_addr),
 969                 EFI_IMAGE_REL_BASED_ARM_MOV32T
 970                 );
 971
 972               // PE/COFF treats MOVW/MOVT relocation as single 64-bit instruction
 973               // Track this address so we can log an error for unsupported sequence of MOVW/MOVT
 974               gMovwOffset = mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr);
 975               break;
 976
 977             case R_ARM_THM_MOVT_ABS:
 978               if ((gMovwOffset + 4) !=  (mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr))) {
 979                 Error (NULL, 0, 3000, "Not Supported", "PE/COFF requires MOVW+MOVT instruction sequence %x +4 != %x.", gMovwOffset, mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr));
 980               }
 981               break;
 982
 983             case R_ARM_ABS32:
 984             case R_ARM_RABS32:
 985               CoffAddFixup (
 986                 mCoffSectionsOffset[RelShdr->sh_info]
 987                 + (Rel->r_offset - SecShdr->sh_addr),
 988                 EFI_IMAGE_REL_BASED_HIGHLOW
 989                 );
 990               break;
 991
 992            default:
 993               Error (NULL, 0, 3000, "Invalid", "WriteRelocations(): %s unsupported ELF EM_ARM relocation 0x%x.", mInImageName, (unsigned) ELF32_R_TYPE(Rel->r_info));
 994             }
 995           } else {
 996             Error (NULL, 0, 3000, "Not Supported", "This tool does not support relocations for ELF with e_machine %u (processor type).", (unsigned) mEhdr->e_machine);
 997           }
 998         }
 999       }
1000     }
1001   }
1002
1003   if (!FoundRelocations && (mEhdr->e_machine == EM_ARM)) {
1004     /* Try again, but look for PT_DYNAMIC instead of SHT_REL */
1005
1006     for (Index = 0; Index < mEhdr->e_phnum; Index++) {
1007       RelElementSize = 0;
1008       RelSize = 0;
1009       RelOffset = 0;
1010
1011       DynamicSegment = GetPhdrByIndex (Index);
1012
1013       if (DynamicSegment->p_type == PT_DYNAMIC) {
1014         Dyn = (Elf32_Dyn *) ((UINT8 *)mEhdr + DynamicSegment->p_offset);
1015
1016         while (Dyn->d_tag != DT_NULL) {
1017           switch (Dyn->d_tag) {
1018             case  DT_REL:
1019               RelOffset = Dyn->d_un.d_val;
1020               break;
1021
1022             case  DT_RELSZ:
1023               RelSize = Dyn->d_un.d_val;
1024               break;
1025
1026             case  DT_RELENT:
1027               RelElementSize = Dyn->d_un.d_val;
1028               break;
1029
1030             default:
1031               break;
1032           }
1033           Dyn++;
1034         }
1035         if (( RelOffset == 0 ) || ( RelSize == 0 ) || ( RelElementSize == 0 )) {
1036           Error (NULL, 0, 3000, "Invalid", "%s bad ARM dynamic relocations.", mInImageName);
1037         }
1038
1039         for (Index = 0; Index < mEhdr->e_shnum; Index++) {
1040           Elf_Shdr *shdr = GetShdrByIndex(Index);
1041
1042           //
1043           // The PT_DYNAMIC section contains DT_REL relocations whose r_offset
1044           // field is relative to the base of a segment (or the entire image),
1045           // and not to the base of an ELF input section as is the case for
1046           // SHT_REL sections. This means that we cannot fix up such relocations
1047           // unless we cross-reference ELF sections and segments, considering
1048           // that the output placement recorded in mCoffSectionsOffset[] is
1049           // section based, not segment based.
1050           //
1051           // Fortunately, there is a simple way around this: we require that the
1052           // in-memory layout of the ELF and PE/COFF versions of the binary is
1053           // identical. That way, r_offset will retain its validity as a PE/COFF
1054           // image offset, and we can record it in the COFF fixup table
1055           // unmodified.
1056           //
1057           if (shdr->sh_addr != mCoffSectionsOffset[Index]) {
1058             Error (NULL, 0, 3000,
1059               "Invalid", "%s: PT_DYNAMIC relocations require identical ELF and PE/COFF section offsets.",
1060               mInImageName);
1061           }
1062         }
1063
1064         for (K = 0; K < RelSize; K += RelElementSize) {
1065
1066           if (DynamicSegment->p_paddr == 0) {
1067             // Older versions of the ARM ELF (SWS ESPC 0003 B-02) specification define DT_REL
1068             // as an offset in the dynamic segment. p_paddr is defined to be zero for ARM tools
1069             Rel = (Elf32_Rel *) ((UINT8 *) mEhdr + DynamicSegment->p_offset + RelOffset + K);
1070           } else {
1071             // This is how it reads in the generic ELF specification
1072             Rel = (Elf32_Rel *) ((UINT8 *) mEhdr + RelOffset + K);
1073           }
1074
1075           switch (ELF32_R_TYPE (Rel->r_info)) {
1076           case  R_ARM_RBASE:
1077             break;
1078
1079           case  R_ARM_RABS32:
1080             CoffAddFixup (Rel->r_offset, EFI_IMAGE_REL_BASED_HIGHLOW);
1081             break;
1082
1083           default:
1084             Error (NULL, 0, 3000, "Invalid", "%s bad ARM dynamic relocations, unkown type %d.", mInImageName, ELF32_R_TYPE (Rel->r_info));
1085             break;
1086           }
1087         }
1088         break;
1089       }
1090     }
1091   }
1092
1093   //
1094   // Pad by adding empty entries.
1095   //
1096   while (mCoffOffset & (mCoffAlignment - 1)) {
1097     CoffAddFixupEntry(0);
1098   }
1099
1100   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
1101   Dir = &NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];
1102   Dir->Size = mCoffOffset - mRelocOffset;
1103   if (Dir->Size == 0) {
1104     // If no relocations, null out the directory entry and don't add the .reloc section
1105     Dir->VirtualAddress = 0;
1106     NtHdr->Pe32.FileHeader.NumberOfSections--;
1107   } else {
1108     Dir->VirtualAddress = mRelocOffset;
1109     CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset,
1110             EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
1111             | EFI_IMAGE_SCN_MEM_DISCARDABLE
1112             | EFI_IMAGE_SCN_MEM_READ);
1113   }
1114
1115 }
1116
1117 STATIC
1118 VOID
1119 WriteDebug32 (
1120   VOID
1121   )
1122 {
1123   UINT32                              Len;
1124   EFI_IMAGE_OPTIONAL_HEADER_UNION     *NtHdr;
1125   EFI_IMAGE_DATA_DIRECTORY            *DataDir;
1126   EFI_IMAGE_DEBUG_DIRECTORY_ENTRY     *Dir;
1127   EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10;
1128
1129   Len = strlen(mInImageName) + 1;
1130
1131   Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + mDebugOffset);
1132   Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW;
1133   Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len;
1134   Dir->RVA = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
1135   Dir->FileOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
1136
1137   Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1);
1138   Nb10->Signature = CODEVIEW_SIGNATURE_NB10;
1139   strcpy ((char *)(Nb10 + 1), mInImageName);
1140
1141
1142   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
1143   DataDir = &NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG];
1144   DataDir->VirtualAddress = mDebugOffset;
1145   DataDir->Size = Dir->SizeOfData + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
1146 }
1147
1148 STATIC
1149 VOID
1150 SetImageSize32 (
1151   VOID
1152   )
1153 {
1154   EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
1155
1156   //
1157   // Set image size
1158   //
1159   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
1160   NtHdr->Pe32.OptionalHeader.SizeOfImage = mCoffOffset;
1161 }
1162
1163 STATIC
1164 VOID
1165 CleanUp32 (
1166   VOID
1167   )
1168 {
1169   if (mCoffSectionsOffset != NULL) {
1170     free (mCoffSectionsOffset);
1171   }
1172 }
1173
1174