BaseTools/Source/C/GenFw/Elf32Convert.c

   1 /** @file
   2 Elf32 Convert solution
   3
   4 Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
   5 Portions copyright (c) 2013, ARM Ltd. All rights reserved.<BR>
   6 Portions Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
   7
   8 SPDX-License-Identifier: BSD-2-Clause-Patent
   9
  10 **/
  11
  12 #include "WinNtInclude.h"
  13
  14 #ifndef __GNUC__
  15 #include <windows.h>
  16 #include <io.h>
  17 #endif
  18 #include <assert.h>
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include <time.h>
  23 #include <ctype.h>
  24
  25 #include <Common/UefiBaseTypes.h>
  26 #include <IndustryStandard/PeImage.h>
  27
  28 #include "PeCoffLib.h"
  29 #include "EfiUtilityMsgs.h"
  30
  31 #include "GenFw.h"
  32 #include "ElfConvert.h"
  33 #include "Elf32Convert.h"
  34
  35 STATIC
  36 VOID
  37 ScanSections32 (
  38   VOID
  39   );
  40
  41 STATIC
  42 BOOLEAN
  43 WriteSections32 (
  44   SECTION_FILTER_TYPES  FilterType
  45   );
  46
  47 STATIC
  48 VOID
  49 WriteRelocations32 (
  50   VOID
  51   );
  52
  53 STATIC
  54 VOID
  55 WriteDebug32 (
  56   VOID
  57   );
  58
  59 STATIC
  60 VOID
  61 SetImageSize32 (
  62   VOID
  63   );
  64
  65 STATIC
  66 VOID
  67 CleanUp32 (
  68   VOID
  69   );
  70
  71 //
  72 // Rename ELF32 structures to common names to help when porting to ELF64.
  73 //
  74 typedef Elf32_Shdr Elf_Shdr;
  75 typedef Elf32_Ehdr Elf_Ehdr;
  76 typedef Elf32_Rel Elf_Rel;
  77 typedef Elf32_Sym Elf_Sym;
  78 typedef Elf32_Phdr Elf_Phdr;
  79 typedef Elf32_Dyn Elf_Dyn;
  80 #define ELFCLASS ELFCLASS32
  81 #define ELF_R_TYPE(r) ELF32_R_TYPE(r)
  82 #define ELF_R_SYM(r) ELF32_R_SYM(r)
  83
  84 //
  85 // Well known ELF structures.
  86 //
  87 STATIC Elf_Ehdr *mEhdr;
  88 STATIC Elf_Shdr *mShdrBase;
  89 STATIC Elf_Phdr *mPhdrBase;
  90
  91 //
  92 // Coff information
  93 //
  94 STATIC UINT32 mCoffAlignment = 0x20;
  95
  96 //
  97 // PE section alignment.
  98 //
  99 STATIC const UINT16 mCoffNbrSections = 4;
 100
 101 //
 102 // ELF sections to offset in Coff file.
 103 //
 104 STATIC UINT32 *mCoffSectionsOffset = NULL;
 105
 106 //
 107 // Offsets in COFF file
 108 //
 109 STATIC UINT32 mNtHdrOffset;
 110 STATIC UINT32 mTextOffset;
 111 STATIC UINT32 mDataOffset;
 112 STATIC UINT32 mHiiRsrcOffset;
 113 STATIC UINT32 mRelocOffset;
 114 STATIC UINT32 mDebugOffset;
 115
 116 //
 117 // Initialization Function
 118 //
 119 BOOLEAN
 120 InitializeElf32 (
 121   UINT8               *FileBuffer,
 122   ELF_FUNCTION_TABLE  *ElfFunctions
 123   )
 124 {
 125   //
 126   // Initialize data pointer and structures.
 127   //
 128   mEhdr = (Elf_Ehdr*) FileBuffer;
 129
 130   //
 131   // Check the ELF32 specific header information.
 132   //
 133   if (mEhdr->e_ident[EI_CLASS] != ELFCLASS32) {
 134     Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS32");
 135     return FALSE;
 136   }
 137   if (mEhdr->e_ident[EI_DATA] != ELFDATA2LSB) {
 138     Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFDATA2LSB");
 139     return FALSE;
 140   }
 141   if ((mEhdr->e_type != ET_EXEC) && (mEhdr->e_type != ET_DYN)) {
 142     Error (NULL, 0, 3000, "Unsupported", "ELF e_type not ET_EXEC or ET_DYN");
 143     return FALSE;
 144   }
 145   if (!((mEhdr->e_machine == EM_386) || (mEhdr->e_machine == EM_ARM) || (mEhdr->e_machine == EM_RISCV))) {
 146     Error (NULL, 0, 3000, "Unsupported", "ELF e_machine is not Elf32 machine.");
 147     return FALSE;
 148   }
 149   if (mEhdr->e_version != EV_CURRENT) {
 150     Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT);
 151     return FALSE;
 152   }
 153
 154   //
 155   // Update section header pointers
 156   //
 157   mShdrBase  = (Elf_Shdr *)((UINT8 *)mEhdr + mEhdr->e_shoff);
 158   mPhdrBase = (Elf_Phdr *)((UINT8 *)mEhdr + mEhdr->e_phoff);
 159
 160   //
 161   // Create COFF Section offset buffer and zero.
 162   //
 163   mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32));
 164   if (mCoffSectionsOffset == NULL) {
 165     Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
 166     return FALSE;
 167   }
 168   memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32));
 169
 170   //
 171   // Fill in function pointers.
 172   //
 173   ElfFunctions->ScanSections = ScanSections32;
 174   ElfFunctions->WriteSections = WriteSections32;
 175   ElfFunctions->WriteRelocations = WriteRelocations32;
 176   ElfFunctions->WriteDebug = WriteDebug32;
 177   ElfFunctions->SetImageSize = SetImageSize32;
 178   ElfFunctions->CleanUp = CleanUp32;
 179
 180   return TRUE;
 181 }
 182
 183
 184 //
 185 // Header by Index functions
 186 //
 187 STATIC
 188 Elf_Shdr*
 189 GetShdrByIndex (
 190   UINT32 Num
 191   )
 192 {
 193   if (Num >= mEhdr->e_shnum) {
 194     Error (NULL, 0, 3000, "Invalid", "GetShdrByIndex: Index %u is too high.", Num);
 195     exit(EXIT_FAILURE);
 196   }
 197
 198   return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize);
 199 }
 200
 201 STATIC
 202 Elf_Phdr*
 203 GetPhdrByIndex (
 204   UINT32 num
 205   )
 206 {
 207   if (num >= mEhdr->e_phnum) {
 208     Error (NULL, 0, 3000, "Invalid", "GetPhdrByIndex: Index %u is too high.", num);
 209     exit(EXIT_FAILURE);
 210   }
 211
 212   return (Elf_Phdr *)((UINT8*)mPhdrBase + num * mEhdr->e_phentsize);
 213 }
 214
 215 STATIC
 216 UINT32
 217 CoffAlign (
 218   UINT32 Offset
 219   )
 220 {
 221   return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1);
 222 }
 223
 224 STATIC
 225 UINT32
 226 DebugRvaAlign (
 227   UINT32 Offset
 228   )
 229 {
 230   return (Offset + 3) & ~3;
 231 }
 232
 233 //
 234 // filter functions
 235 //
 236 STATIC
 237 BOOLEAN
 238 IsTextShdr (
 239   Elf_Shdr *Shdr
 240   )
 241 {
 242   return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC);
 243 }
 244
 245 STATIC
 246 BOOLEAN
 247 IsHiiRsrcShdr (
 248   Elf_Shdr *Shdr
 249   )
 250 {
 251   Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
 252
 253   return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0);
 254 }
 255
 256 STATIC
 257 BOOLEAN
 258 IsDataShdr (
 259   Elf_Shdr *Shdr
 260   )
 261 {
 262   if (IsHiiRsrcShdr(Shdr)) {
 263     return FALSE;
 264   }
 265   return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE);
 266 }
 267
 268 STATIC
 269 BOOLEAN
 270 IsStrtabShdr (
 271   Elf_Shdr *Shdr
 272   )
 273 {
 274   Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
 275
 276   return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_STRTAB_SECTION_NAME) == 0);
 277 }
 278
 279 STATIC
 280 Elf_Shdr *
 281 FindStrtabShdr (
 282   VOID
 283   )
 284 {
 285   UINT32 i;
 286   for (i = 0; i < mEhdr->e_shnum; i++) {
 287     Elf_Shdr *shdr = GetShdrByIndex(i);
 288     if (IsStrtabShdr(shdr)) {
 289       return shdr;
 290     }
 291   }
 292   return NULL;
 293 }
 294
 295 STATIC
 296 const UINT8 *
 297 GetSymName (
 298   Elf_Sym *Sym
 299   )
 300 {
 301   Elf_Shdr *StrtabShdr;
 302   UINT8    *StrtabContents;
 303   BOOLEAN  foundEnd;
 304   UINT32   i;
 305
 306   if (Sym->st_name == 0) {
 307     return NULL;
 308   }
 309
 310   StrtabShdr = FindStrtabShdr();
 311   if (StrtabShdr == NULL) {
 312     return NULL;
 313   }
 314
 315   assert(Sym->st_name < StrtabShdr->sh_size);
 316
 317   StrtabContents = (UINT8*)mEhdr + StrtabShdr->sh_offset;
 318
 319   foundEnd = FALSE;
 320   for (i = Sym->st_name; (i < StrtabShdr->sh_size) && !foundEnd; i++) {
 321     foundEnd = (BOOLEAN)(StrtabContents[i] == 0);
 322   }
 323   assert(foundEnd);
 324
 325   return StrtabContents + Sym->st_name;
 326 }
 327
 328 //
 329 // Elf functions interface implementation
 330 //
 331
 332 STATIC
 333 VOID
 334 ScanSections32 (
 335   VOID
 336   )
 337 {
 338   UINT32                          i;
 339   EFI_IMAGE_DOS_HEADER            *DosHdr;
 340   EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
 341   UINT32                          CoffEntry;
 342   UINT32                          SectionCount;
 343   BOOLEAN                         FoundSection;
 344
 345   CoffEntry = 0;
 346   mCoffOffset = 0;
 347
 348   //
 349   // Coff file start with a DOS header.
 350   //
 351   mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40;
 352   mNtHdrOffset = mCoffOffset;
 353   switch (mEhdr->e_machine) {
 354   case EM_386:
 355   case EM_ARM:
 356     mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS32);
 357   break;
 358   default:
 359     VerboseMsg ("%s unknown e_machine type. Assume IA-32", (UINTN)mEhdr->e_machine);
 360     mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS32);
 361   break;
 362   }
 363
 364   mTableOffset = mCoffOffset;
 365   mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER);
 366
 367   //
 368   // Set mCoffAlignment to the maximum alignment of the input sections
 369   // we care about
 370   //
 371   for (i = 0; i < mEhdr->e_shnum; i++) {
 372     Elf_Shdr *shdr = GetShdrByIndex(i);
 373     if (shdr->sh_addralign <= mCoffAlignment) {
 374       continue;
 375     }
 376     if (IsTextShdr(shdr) || IsDataShdr(shdr) || IsHiiRsrcShdr(shdr)) {
 377       mCoffAlignment = (UINT32)shdr->sh_addralign;
 378     }
 379   }
 380
 381   //
 382   // Check if mCoffAlignment is larger than MAX_COFF_ALIGNMENT
 383   //
 384   if (mCoffAlignment > MAX_COFF_ALIGNMENT) {
 385     Error (NULL, 0, 3000, "Invalid", "Section alignment is larger than MAX_COFF_ALIGNMENT.");
 386     assert (FALSE);
 387   }
 388
 389   //
 390   // Move the PE/COFF header right before the first section. This will help us
 391   // save space when converting to TE.
 392   //
 393   if (mCoffAlignment > mCoffOffset) {
 394     mNtHdrOffset += mCoffAlignment - mCoffOffset;
 395     mTableOffset += mCoffAlignment - mCoffOffset;
 396     mCoffOffset = mCoffAlignment;
 397   }
 398
 399   //
 400   // First text sections.
 401   //
 402   mCoffOffset = CoffAlign(mCoffOffset);
 403   mTextOffset = mCoffOffset;
 404   FoundSection = FALSE;
 405   SectionCount = 0;
 406   for (i = 0; i < mEhdr->e_shnum; i++) {
 407     Elf_Shdr *shdr = GetShdrByIndex(i);
 408     if (IsTextShdr(shdr)) {
 409       if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
 410         // the alignment field is valid
 411         if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
 412           // if the section address is aligned we must align PE/COFF
 413           mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);
 414         } else {
 415           Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
 416         }
 417       }
 418
 419       /* Relocate entry.  */
 420       if ((mEhdr->e_entry >= shdr->sh_addr) &&
 421           (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) {
 422         CoffEntry = mCoffOffset + mEhdr->e_entry - shdr->sh_addr;
 423       }
 424
 425       //
 426       // Set mTextOffset with the offset of the first '.text' section
 427       //
 428       if (!FoundSection) {
 429         mTextOffset = mCoffOffset;
 430         FoundSection = TRUE;
 431       }
 432
 433       mCoffSectionsOffset[i] = mCoffOffset;
 434       mCoffOffset += shdr->sh_size;
 435       SectionCount ++;
 436     }
 437   }
 438
 439   if (!FoundSection) {
 440     Error (NULL, 0, 3000, "Invalid", "Did not find any '.text' section.");
 441     assert (FALSE);
 442   }
 443
 444   mDebugOffset = DebugRvaAlign(mCoffOffset);
 445   mCoffOffset = CoffAlign(mCoffOffset);
 446
 447   if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
 448     Warning (NULL, 0, 0, NULL, "Multiple sections in %s are merged into 1 text section. Source level debug might not work correctly.", mInImageName);
 449   }
 450
 451   //
 452   //  Then data sections.
 453   //
 454   mDataOffset = mCoffOffset;
 455   FoundSection = FALSE;
 456   SectionCount = 0;
 457   for (i = 0; i < mEhdr->e_shnum; i++) {
 458     Elf_Shdr *shdr = GetShdrByIndex(i);
 459     if (IsDataShdr(shdr)) {
 460       if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
 461         // the alignment field is valid
 462         if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
 463           // if the section address is aligned we must align PE/COFF
 464           mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);
 465         } else {
 466           Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
 467         }
 468       }
 469
 470       //
 471       // Set mDataOffset with the offset of the first '.data' section
 472       //
 473       if (!FoundSection) {
 474         mDataOffset = mCoffOffset;
 475         FoundSection = TRUE;
 476       }
 477
 478       mCoffSectionsOffset[i] = mCoffOffset;
 479       mCoffOffset += shdr->sh_size;
 480       SectionCount ++;
 481     }
 482   }
 483
 484   if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
 485     Warning (NULL, 0, 0, NULL, "Multiple sections in %s are merged into 1 data section. Source level debug might not work correctly.", mInImageName);
 486   }
 487
 488   //
 489   // Make room for .debug data in .data (or .text if .data is empty) instead of
 490   // putting it in a section of its own. This is explicitly allowed by the
 491   // PE/COFF spec, and prevents bloat in the binary when using large values for
 492   // section alignment.
 493   //
 494   if (SectionCount > 0) {
 495     mDebugOffset = DebugRvaAlign(mCoffOffset);
 496   }
 497   mCoffOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +
 498                 sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +
 499                 strlen(mInImageName) + 1;
 500
 501   mCoffOffset = CoffAlign(mCoffOffset);
 502   if (SectionCount == 0) {
 503     mDataOffset = mCoffOffset;
 504   }
 505
 506   //
 507   //  The HII resource sections.
 508   //
 509   mHiiRsrcOffset = mCoffOffset;
 510   for (i = 0; i < mEhdr->e_shnum; i++) {
 511     Elf_Shdr *shdr = GetShdrByIndex(i);
 512     if (IsHiiRsrcShdr(shdr)) {
 513       if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
 514         // the alignment field is valid
 515         if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
 516           // if the section address is aligned we must align PE/COFF
 517           mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);
 518         } else {
 519           Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
 520         }
 521       }
 522       if (shdr->sh_size != 0) {
 523         mHiiRsrcOffset = mCoffOffset;
 524         mCoffSectionsOffset[i] = mCoffOffset;
 525         mCoffOffset += shdr->sh_size;
 526         mCoffOffset = CoffAlign(mCoffOffset);
 527         SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset);
 528       }
 529       break;
 530     }
 531   }
 532
 533   mRelocOffset = mCoffOffset;
 534
 535   //
 536   // Allocate base Coff file.  Will be expanded later for relocations.
 537   //
 538   mCoffFile = (UINT8 *)malloc(mCoffOffset);
 539   if (mCoffFile == NULL) {
 540     Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
 541   }
 542   assert (mCoffFile != NULL);
 543   memset(mCoffFile, 0, mCoffOffset);
 544
 545   //
 546   // Fill headers.
 547   //
 548   DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile;
 549   DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE;
 550   DosHdr->e_lfanew = mNtHdrOffset;
 551
 552   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset);
 553
 554   NtHdr->Pe32.Signature = EFI_IMAGE_NT_SIGNATURE;
 555
 556   switch (mEhdr->e_machine) {
 557   case EM_386:
 558     NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_IA32;
 559     NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
 560     break;
 561   case EM_ARM:
 562     NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_ARMT;
 563     NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
 564     break;
 565   default:
 566     VerboseMsg ("%s unknown e_machine type %hu. Assume IA-32", mInImageName, mEhdr->e_machine);
 567     NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_IA32;
 568     NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
 569   }
 570
 571   NtHdr->Pe32.FileHeader.NumberOfSections = mCoffNbrSections;
 572   NtHdr->Pe32.FileHeader.TimeDateStamp = (UINT32) time(NULL);
 573   mImageTimeStamp = NtHdr->Pe32.FileHeader.TimeDateStamp;
 574   NtHdr->Pe32.FileHeader.PointerToSymbolTable = 0;
 575   NtHdr->Pe32.FileHeader.NumberOfSymbols = 0;
 576   NtHdr->Pe32.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32.OptionalHeader);
 577   NtHdr->Pe32.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE
 578     | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED
 579     | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED
 580     | EFI_IMAGE_FILE_32BIT_MACHINE;
 581
 582   NtHdr->Pe32.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset;
 583   NtHdr->Pe32.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset;
 584   NtHdr->Pe32.OptionalHeader.SizeOfUninitializedData = 0;
 585   NtHdr->Pe32.OptionalHeader.AddressOfEntryPoint = CoffEntry;
 586
 587   NtHdr->Pe32.OptionalHeader.BaseOfCode = mTextOffset;
 588
 589   NtHdr->Pe32.OptionalHeader.BaseOfData = mDataOffset;
 590   NtHdr->Pe32.OptionalHeader.ImageBase = 0;
 591   NtHdr->Pe32.OptionalHeader.SectionAlignment = mCoffAlignment;
 592   NtHdr->Pe32.OptionalHeader.FileAlignment = mCoffAlignment;
 593   NtHdr->Pe32.OptionalHeader.SizeOfImage = 0;
 594
 595   NtHdr->Pe32.OptionalHeader.SizeOfHeaders = mTextOffset;
 596   NtHdr->Pe32.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;
 597
 598   //
 599   // Section headers.
 600   //
 601   if ((mDataOffset - mTextOffset) > 0) {
 602     CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset,
 603             EFI_IMAGE_SCN_CNT_CODE
 604             | EFI_IMAGE_SCN_MEM_EXECUTE
 605             | EFI_IMAGE_SCN_MEM_READ);
 606   } else {
 607     // Don't make a section of size 0.
 608     NtHdr->Pe32.FileHeader.NumberOfSections--;
 609   }
 610
 611   if ((mHiiRsrcOffset - mDataOffset) > 0) {
 612     CreateSectionHeader (".data", mDataOffset, mHiiRsrcOffset - mDataOffset,
 613             EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
 614             | EFI_IMAGE_SCN_MEM_WRITE
 615             | EFI_IMAGE_SCN_MEM_READ);
 616   } else {
 617     // Don't make a section of size 0.
 618     NtHdr->Pe32.FileHeader.NumberOfSections--;
 619   }
 620
 621   if ((mRelocOffset - mHiiRsrcOffset) > 0) {
 622     CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset,
 623             EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
 624             | EFI_IMAGE_SCN_MEM_READ);
 625
 626     NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset;
 627     NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset;
 628   } else {
 629     // Don't make a section of size 0.
 630     NtHdr->Pe32.FileHeader.NumberOfSections--;
 631   }
 632
 633 }
 634
 635 STATIC
 636 BOOLEAN
 637 WriteSections32 (
 638   SECTION_FILTER_TYPES  FilterType
 639   )
 640 {
 641   UINT32      Idx;
 642   Elf_Shdr    *SecShdr;
 643   UINT32      SecOffset;
 644   BOOLEAN     (*Filter)(Elf_Shdr *);
 645
 646   //
 647   // Initialize filter pointer
 648   //
 649   switch (FilterType) {
 650     case SECTION_TEXT:
 651       Filter = IsTextShdr;
 652       break;
 653     case SECTION_HII:
 654       Filter = IsHiiRsrcShdr;
 655       break;
 656     case SECTION_DATA:
 657       Filter = IsDataShdr;
 658       break;
 659     default:
 660       return FALSE;
 661   }
 662
 663   //
 664   // First: copy sections.
 665   //
 666   for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
 667     Elf_Shdr *Shdr = GetShdrByIndex(Idx);
 668     if ((*Filter)(Shdr)) {
 669       switch (Shdr->sh_type) {
 670       case SHT_PROGBITS:
 671         /* Copy.  */
 672         if (Shdr->sh_offset + Shdr->sh_size > mFileBufferSize) {
 673           return FALSE;
 674         }
 675         memcpy(mCoffFile + mCoffSectionsOffset[Idx],
 676               (UINT8*)mEhdr + Shdr->sh_offset,
 677               Shdr->sh_size);
 678         break;
 679
 680       case SHT_NOBITS:
 681         memset(mCoffFile + mCoffSectionsOffset[Idx], 0, Shdr->sh_size);
 682         break;
 683
 684       default:
 685         //
 686         //  Ignore for unknown section type.
 687         //
 688         VerboseMsg ("%s unknown section type %x. We ignore this unknown section type.", mInImageName, (unsigned)Shdr->sh_type);
 689         break;
 690       }
 691     }
 692   }
 693
 694   //
 695   // Second: apply relocations.
 696   //
 697   for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
 698     //
 699     // Determine if this is a relocation section.
 700     //
 701     Elf_Shdr *RelShdr = GetShdrByIndex(Idx);
 702     if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {
 703       continue;
 704     }
 705
 706     //
 707     // Relocation section found.  Now extract section information that the relocations
 708     // apply to in the ELF data and the new COFF data.
 709     //
 710     SecShdr = GetShdrByIndex(RelShdr->sh_info);
 711     SecOffset = mCoffSectionsOffset[RelShdr->sh_info];
 712
 713     //
 714     // Only process relocations for the current filter type.
 715     //
 716     if (RelShdr->sh_type == SHT_REL && (*Filter)(SecShdr)) {
 717       UINT32 RelOffset;
 718
 719       //
 720       // Determine the symbol table referenced by the relocation data.
 721       //
 722       Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link);
 723       UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;
 724
 725       //
 726       // Process all relocation entries for this section.
 727       //
 728       for (RelOffset = 0; RelOffset < RelShdr->sh_size; RelOffset += RelShdr->sh_entsize) {
 729         //
 730         // Set pointer to relocation entry
 731         //
 732         Elf_Rel *Rel = (Elf_Rel *)((UINT8*)mEhdr + RelShdr->sh_offset + RelOffset);
 733
 734         //
 735         // Set pointer to symbol table entry associated with the relocation entry.
 736         //
 737         Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);
 738
 739         Elf_Shdr *SymShdr;
 740         UINT8 *Targ;
 741         UINT16 Address;
 742
 743         //
 744         // Check section header index found in symbol table and get the section
 745         // header location.
 746         //
 747         if (Sym->st_shndx == SHN_UNDEF
 748             || Sym->st_shndx >= mEhdr->e_shnum) {
 749           const UINT8 *SymName = GetSymName(Sym);
 750           if (SymName == NULL) {
 751             SymName = (const UINT8 *)"<unknown>";
 752           }
 753
 754           Error (NULL, 0, 3000, "Invalid",
 755                  "%s: Bad definition for symbol '%s'@%#x or unsupported symbol type.  "
 756                  "For example, absolute and undefined symbols are not supported.",
 757                  mInImageName, SymName, Sym->st_value);
 758
 759           exit(EXIT_FAILURE);
 760         }
 761         SymShdr = GetShdrByIndex(Sym->st_shndx);
 762
 763         //
 764         // Convert the relocation data to a pointer into the coff file.
 765         //
 766         // Note:
 767         //   r_offset is the virtual address of the storage unit to be relocated.
 768         //   sh_addr is the virtual address for the base of the section.
 769         //
 770         Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr);
 771
 772         //
 773         // Determine how to handle each relocation type based on the machine type.
 774         //
 775         if (mEhdr->e_machine == EM_386) {
 776           switch (ELF_R_TYPE(Rel->r_info)) {
 777           case R_386_NONE:
 778             break;
 779           case R_386_32:
 780             //
 781             // Absolute relocation.
 782             //  Converts Targ from a absolute virtual address to the absolute
 783             //  COFF address.
 784             //
 785             *(UINT32 *)Targ = *(UINT32 *)Targ - SymShdr->sh_addr
 786               + mCoffSectionsOffset[Sym->st_shndx];
 787             break;
 788           case R_386_PC32:
 789             //
 790             // Relative relocation: Symbol - Ip + Addend
 791             //
 792             *(UINT32 *)Targ = *(UINT32 *)Targ
 793               + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr)
 794               - (SecOffset - SecShdr->sh_addr);
 795             break;
 796           default:
 797             Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_386 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
 798           }
 799         } else if (mEhdr->e_machine == EM_ARM) {
 800           switch (ELF32_R_TYPE(Rel->r_info)) {
 801           case R_ARM_RBASE:
 802             // No relocation - no action required
 803             // break skipped
 804
 805           case R_ARM_PC24:
 806           case R_ARM_REL32:
 807           case R_ARM_XPC25:
 808           case R_ARM_THM_PC22:
 809           case R_ARM_THM_JUMP19:
 810           case R_ARM_CALL:
 811           case R_ARM_JMP24:
 812           case R_ARM_THM_JUMP24:
 813           case R_ARM_PREL31:
 814           case R_ARM_MOVW_PREL_NC:
 815           case R_ARM_MOVT_PREL:
 816           case R_ARM_THM_MOVW_PREL_NC:
 817           case R_ARM_THM_MOVT_PREL:
 818           case R_ARM_THM_JMP6:
 819           case R_ARM_THM_ALU_PREL_11_0:
 820           case R_ARM_THM_PC12:
 821           case R_ARM_REL32_NOI:
 822           case R_ARM_ALU_PC_G0_NC:
 823           case R_ARM_ALU_PC_G0:
 824           case R_ARM_ALU_PC_G1_NC:
 825           case R_ARM_ALU_PC_G1:
 826           case R_ARM_ALU_PC_G2:
 827           case R_ARM_LDR_PC_G1:
 828           case R_ARM_LDR_PC_G2:
 829           case R_ARM_LDRS_PC_G0:
 830           case R_ARM_LDRS_PC_G1:
 831           case R_ARM_LDRS_PC_G2:
 832           case R_ARM_LDC_PC_G0:
 833           case R_ARM_LDC_PC_G1:
 834           case R_ARM_LDC_PC_G2:
 835           case R_ARM_THM_JUMP11:
 836           case R_ARM_THM_JUMP8:
 837           case R_ARM_TLS_GD32:
 838           case R_ARM_TLS_LDM32:
 839           case R_ARM_TLS_IE32:
 840             // Thease are all PC-relative relocations and don't require modification
 841             // GCC does not seem to have the concept of a application that just needs to get relocated.
 842             break;
 843
 844           case R_ARM_THM_MOVW_ABS_NC:
 845             // MOVW is only lower 16-bits of the addres
 846             Address = (UINT16)(Sym->st_value - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);
 847             ThumbMovtImmediatePatch ((UINT16 *)Targ, Address);
 848             break;
 849
 850           case R_ARM_THM_MOVT_ABS:
 851             // MOVT is only upper 16-bits of the addres
 852             Address = (UINT16)((Sym->st_value - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]) >> 16);
 853             ThumbMovtImmediatePatch ((UINT16 *)Targ, Address);
 854             break;
 855
 856           case R_ARM_ABS32:
 857           case R_ARM_RABS32:
 858             //
 859             // Absolute relocation.
 860             //
 861             *(UINT32 *)Targ = *(UINT32 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
 862             break;
 863
 864           default:
 865             Error (NULL, 0, 3000, "Invalid", "WriteSections (): %s unsupported ELF EM_ARM relocation 0x%x.", mInImageName, (unsigned) ELF32_R_TYPE(Rel->r_info));
 866           }
 867         }
 868       }
 869     }
 870   }
 871
 872   return TRUE;
 873 }
 874
 875 UINTN gMovwOffset = 0;
 876
 877 STATIC
 878 VOID
 879 WriteRelocations32 (
 880   VOID
 881   )
 882 {
 883   UINT32                           Index;
 884   EFI_IMAGE_OPTIONAL_HEADER_UNION  *NtHdr;
 885   EFI_IMAGE_DATA_DIRECTORY         *Dir;
 886   BOOLEAN                          FoundRelocations;
 887   Elf_Dyn                          *Dyn;
 888   Elf_Rel                          *Rel;
 889   UINTN                            RelElementSize;
 890   UINTN                            RelSize;
 891   UINTN                            RelOffset;
 892   UINTN                            K;
 893   Elf32_Phdr                       *DynamicSegment;
 894
 895   for (Index = 0, FoundRelocations = FALSE; Index < mEhdr->e_shnum; Index++) {
 896     Elf_Shdr *RelShdr = GetShdrByIndex(Index);
 897     if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) {
 898       Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info);
 899       if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) {
 900         UINT32 RelIdx;
 901
 902         FoundRelocations = TRUE;
 903         for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) {
 904           Rel = (Elf_Rel *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);
 905
 906           if (mEhdr->e_machine == EM_386) {
 907             switch (ELF_R_TYPE(Rel->r_info)) {
 908             case R_386_NONE:
 909             case R_386_PC32:
 910               //
 911               // No fixup entry required.
 912               //
 913               break;
 914             case R_386_32:
 915               //
 916               // Creates a relative relocation entry from the absolute entry.
 917               //
 918               CoffAddFixup(mCoffSectionsOffset[RelShdr->sh_info]
 919               + (Rel->r_offset - SecShdr->sh_addr),
 920               EFI_IMAGE_REL_BASED_HIGHLOW);
 921               break;
 922             default:
 923               Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_386 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
 924             }
 925           } else if (mEhdr->e_machine == EM_ARM) {
 926             switch (ELF32_R_TYPE(Rel->r_info)) {
 927             case R_ARM_RBASE:
 928               // No relocation - no action required
 929               // break skipped
 930
 931             case R_ARM_PC24:
 932             case R_ARM_REL32:
 933             case R_ARM_XPC25:
 934             case R_ARM_THM_PC22:
 935             case R_ARM_THM_JUMP19:
 936             case R_ARM_CALL:
 937             case R_ARM_JMP24:
 938             case R_ARM_THM_JUMP24:
 939             case R_ARM_PREL31:
 940             case R_ARM_MOVW_PREL_NC:
 941             case R_ARM_MOVT_PREL:
 942             case R_ARM_THM_MOVW_PREL_NC:
 943             case R_ARM_THM_MOVT_PREL:
 944             case R_ARM_THM_JMP6:
 945             case R_ARM_THM_ALU_PREL_11_0:
 946             case R_ARM_THM_PC12:
 947             case R_ARM_REL32_NOI:
 948             case R_ARM_ALU_PC_G0_NC:
 949             case R_ARM_ALU_PC_G0:
 950             case R_ARM_ALU_PC_G1_NC:
 951             case R_ARM_ALU_PC_G1:
 952             case R_ARM_ALU_PC_G2:
 953             case R_ARM_LDR_PC_G1:
 954             case R_ARM_LDR_PC_G2:
 955             case R_ARM_LDRS_PC_G0:
 956             case R_ARM_LDRS_PC_G1:
 957             case R_ARM_LDRS_PC_G2:
 958             case R_ARM_LDC_PC_G0:
 959             case R_ARM_LDC_PC_G1:
 960             case R_ARM_LDC_PC_G2:
 961             case R_ARM_THM_JUMP11:
 962             case R_ARM_THM_JUMP8:
 963             case R_ARM_TLS_GD32:
 964             case R_ARM_TLS_LDM32:
 965             case R_ARM_TLS_IE32:
 966               // Thease are all PC-relative relocations and don't require modification
 967               break;
 968
 969             case R_ARM_THM_MOVW_ABS_NC:
 970               CoffAddFixup (
 971                 mCoffSectionsOffset[RelShdr->sh_info]
 972                 + (Rel->r_offset - SecShdr->sh_addr),
 973                 EFI_IMAGE_REL_BASED_ARM_MOV32T
 974                 );
 975
 976               // PE/COFF treats MOVW/MOVT relocation as single 64-bit instruction
 977               // Track this address so we can log an error for unsupported sequence of MOVW/MOVT
 978               gMovwOffset = mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr);
 979               break;
 980
 981             case R_ARM_THM_MOVT_ABS:
 982               if ((gMovwOffset + 4) !=  (mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr))) {
 983                 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));
 984               }
 985               break;
 986
 987             case R_ARM_ABS32:
 988             case R_ARM_RABS32:
 989               CoffAddFixup (
 990                 mCoffSectionsOffset[RelShdr->sh_info]
 991                 + (Rel->r_offset - SecShdr->sh_addr),
 992                 EFI_IMAGE_REL_BASED_HIGHLOW
 993                 );
 994               break;
 995
 996            default:
 997               Error (NULL, 0, 3000, "Invalid", "WriteRelocations(): %s unsupported ELF EM_ARM relocation 0x%x.", mInImageName, (unsigned) ELF32_R_TYPE(Rel->r_info));
 998             }
 999           } else {
1000             Error (NULL, 0, 3000, "Not Supported", "This tool does not support relocations for ELF with e_machine %u (processor type).", (unsigned) mEhdr->e_machine);
1001           }
1002         }
1003       }
1004     }
1005   }
1006
1007   if (!FoundRelocations && (mEhdr->e_machine == EM_ARM)) {
1008     /* Try again, but look for PT_DYNAMIC instead of SHT_REL */
1009
1010     for (Index = 0; Index < mEhdr->e_phnum; Index++) {
1011       RelElementSize = 0;
1012       RelSize = 0;
1013       RelOffset = 0;
1014
1015       DynamicSegment = GetPhdrByIndex (Index);
1016
1017       if (DynamicSegment->p_type == PT_DYNAMIC) {
1018         Dyn = (Elf32_Dyn *) ((UINT8 *)mEhdr + DynamicSegment->p_offset);
1019
1020         while (Dyn->d_tag != DT_NULL) {
1021           switch (Dyn->d_tag) {
1022             case  DT_REL:
1023               RelOffset = Dyn->d_un.d_val;
1024               break;
1025
1026             case  DT_RELSZ:
1027               RelSize = Dyn->d_un.d_val;
1028               break;
1029
1030             case  DT_RELENT:
1031               RelElementSize = Dyn->d_un.d_val;
1032               break;
1033
1034             default:
1035               break;
1036           }
1037           Dyn++;
1038         }
1039         if (( RelOffset == 0 ) || ( RelSize == 0 ) || ( RelElementSize == 0 )) {
1040           Error (NULL, 0, 3000, "Invalid", "%s bad ARM dynamic relocations.", mInImageName);
1041         }
1042
1043         for (Index = 0; Index < mEhdr->e_shnum; Index++) {
1044           Elf_Shdr *shdr = GetShdrByIndex(Index);
1045
1046           //
1047           // The PT_DYNAMIC section contains DT_REL relocations whose r_offset
1048           // field is relative to the base of a segment (or the entire image),
1049           // and not to the base of an ELF input section as is the case for
1050           // SHT_REL sections. This means that we cannot fix up such relocations
1051           // unless we cross-reference ELF sections and segments, considering
1052           // that the output placement recorded in mCoffSectionsOffset[] is
1053           // section based, not segment based.
1054           //
1055           // Fortunately, there is a simple way around this: we require that the
1056           // in-memory layout of the ELF and PE/COFF versions of the binary is
1057           // identical. That way, r_offset will retain its validity as a PE/COFF
1058           // image offset, and we can record it in the COFF fixup table
1059           // unmodified.
1060           //
1061           if (shdr->sh_addr != mCoffSectionsOffset[Index]) {
1062             Error (NULL, 0, 3000,
1063               "Invalid", "%s: PT_DYNAMIC relocations require identical ELF and PE/COFF section offsets.",
1064               mInImageName);
1065           }
1066         }
1067
1068         for (K = 0; K < RelSize; K += RelElementSize) {
1069
1070           if (DynamicSegment->p_paddr == 0) {
1071             // Older versions of the ARM ELF (SWS ESPC 0003 B-02) specification define DT_REL
1072             // as an offset in the dynamic segment. p_paddr is defined to be zero for ARM tools
1073             Rel = (Elf32_Rel *) ((UINT8 *) mEhdr + DynamicSegment->p_offset + RelOffset + K);
1074           } else {
1075             // This is how it reads in the generic ELF specification
1076             Rel = (Elf32_Rel *) ((UINT8 *) mEhdr + RelOffset + K);
1077           }
1078
1079           switch (ELF32_R_TYPE (Rel->r_info)) {
1080           case  R_ARM_RBASE:
1081             break;
1082
1083           case  R_ARM_RABS32:
1084             CoffAddFixup (Rel->r_offset, EFI_IMAGE_REL_BASED_HIGHLOW);
1085             break;
1086
1087           default:
1088             Error (NULL, 0, 3000, "Invalid", "%s bad ARM dynamic relocations, unknown type %d.", mInImageName, ELF32_R_TYPE (Rel->r_info));
1089             break;
1090           }
1091         }
1092         break;
1093       }
1094     }
1095   }
1096
1097   //
1098   // Pad by adding empty entries.
1099   //
1100   while (mCoffOffset & (mCoffAlignment - 1)) {
1101     CoffAddFixupEntry(0);
1102   }
1103
1104   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
1105   Dir = &NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];
1106   Dir->Size = mCoffOffset - mRelocOffset;
1107   if (Dir->Size == 0) {
1108     // If no relocations, null out the directory entry and don't add the .reloc section
1109     Dir->VirtualAddress = 0;
1110     NtHdr->Pe32.FileHeader.NumberOfSections--;
1111   } else {
1112     Dir->VirtualAddress = mRelocOffset;
1113     CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset,
1114             EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
1115             | EFI_IMAGE_SCN_MEM_DISCARDABLE
1116             | EFI_IMAGE_SCN_MEM_READ);
1117   }
1118
1119 }
1120
1121 STATIC
1122 VOID
1123 WriteDebug32 (
1124   VOID
1125   )
1126 {
1127   UINT32                              Len;
1128   EFI_IMAGE_OPTIONAL_HEADER_UNION     *NtHdr;
1129   EFI_IMAGE_DATA_DIRECTORY            *DataDir;
1130   EFI_IMAGE_DEBUG_DIRECTORY_ENTRY     *Dir;
1131   EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10;
1132
1133   Len = strlen(mInImageName) + 1;
1134
1135   Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + mDebugOffset);
1136   Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW;
1137   Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len;
1138   Dir->RVA = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
1139   Dir->FileOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
1140
1141   Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1);
1142   Nb10->Signature = CODEVIEW_SIGNATURE_NB10;
1143   strcpy ((char *)(Nb10 + 1), mInImageName);
1144
1145
1146   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
1147   DataDir = &NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG];
1148   DataDir->VirtualAddress = mDebugOffset;
1149   DataDir->Size = sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
1150 }
1151
1152 STATIC
1153 VOID
1154 SetImageSize32 (
1155   VOID
1156   )
1157 {
1158   EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
1159
1160   //
1161   // Set image size
1162   //
1163   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
1164   NtHdr->Pe32.OptionalHeader.SizeOfImage = mCoffOffset;
1165 }
1166
1167 STATIC
1168 VOID
1169 CleanUp32 (
1170   VOID
1171   )
1172 {
1173   if (mCoffSectionsOffset != NULL) {
1174     free (mCoffSectionsOffset);
1175   }
1176 }
1177
1178