BaseTools/Source/C/GenFw/Elf32Convert.c

   1 /** @file
   2 Elf32 Convert solution
   3
   4 Copyright (c) 2010 - 2021, 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     Warning (NULL, 0, 3000, "Unsupported", "ELF e_machine is not Elf32 machine.");
 147   }
 148   if (mEhdr->e_version != EV_CURRENT) {
 149     Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT);
 150     return FALSE;
 151   }
 152
 153   //
 154   // Update section header pointers
 155   //
 156   mShdrBase  = (Elf_Shdr *)((UINT8 *)mEhdr + mEhdr->e_shoff);
 157   mPhdrBase = (Elf_Phdr *)((UINT8 *)mEhdr + mEhdr->e_phoff);
 158
 159   //
 160   // Create COFF Section offset buffer and zero.
 161   //
 162   mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32));
 163   if (mCoffSectionsOffset == NULL) {
 164     Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
 165     return FALSE;
 166   }
 167   memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32));
 168
 169   //
 170   // Fill in function pointers.
 171   //
 172   ElfFunctions->ScanSections = ScanSections32;
 173   ElfFunctions->WriteSections = WriteSections32;
 174   ElfFunctions->WriteRelocations = WriteRelocations32;
 175   ElfFunctions->WriteDebug = WriteDebug32;
 176   ElfFunctions->SetImageSize = SetImageSize32;
 177   ElfFunctions->CleanUp = CleanUp32;
 178
 179   return TRUE;
 180 }
 181
 182
 183 //
 184 // Header by Index functions
 185 //
 186 STATIC
 187 Elf_Shdr*
 188 GetShdrByIndex (
 189   UINT32 Num
 190   )
 191 {
 192   if (Num >= mEhdr->e_shnum) {
 193     Error (NULL, 0, 3000, "Invalid", "GetShdrByIndex: Index %u is too high.", Num);
 194     exit(EXIT_FAILURE);
 195   }
 196
 197   return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize);
 198 }
 199
 200 STATIC
 201 Elf_Phdr*
 202 GetPhdrByIndex (
 203   UINT32 num
 204   )
 205 {
 206   if (num >= mEhdr->e_phnum) {
 207     Error (NULL, 0, 3000, "Invalid", "GetPhdrByIndex: Index %u is too high.", num);
 208     exit(EXIT_FAILURE);
 209   }
 210
 211   return (Elf_Phdr *)((UINT8*)mPhdrBase + num * mEhdr->e_phentsize);
 212 }
 213
 214 STATIC
 215 UINT32
 216 CoffAlign (
 217   UINT32 Offset
 218   )
 219 {
 220   return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1);
 221 }
 222
 223 STATIC
 224 UINT32
 225 DebugRvaAlign (
 226   UINT32 Offset
 227   )
 228 {
 229   return (Offset + 3) & ~3;
 230 }
 231
 232 //
 233 // filter functions
 234 //
 235 STATIC
 236 BOOLEAN
 237 IsTextShdr (
 238   Elf_Shdr *Shdr
 239   )
 240 {
 241   return (BOOLEAN) ((Shdr->sh_flags & (SHF_EXECINSTR | SHF_ALLOC)) == (SHF_EXECINSTR | SHF_ALLOC));
 242 }
 243
 244 STATIC
 245 BOOLEAN
 246 IsHiiRsrcShdr (
 247   Elf_Shdr *Shdr
 248   )
 249 {
 250   Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
 251
 252   return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0);
 253 }
 254
 255 STATIC
 256 BOOLEAN
 257 IsDataShdr (
 258   Elf_Shdr *Shdr
 259   )
 260 {
 261   if (IsHiiRsrcShdr(Shdr)) {
 262     return FALSE;
 263   }
 264   return (BOOLEAN) (Shdr->sh_flags & (SHF_EXECINSTR | SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE);
 265 }
 266
 267 STATIC
 268 BOOLEAN
 269 IsStrtabShdr (
 270   Elf_Shdr *Shdr
 271   )
 272 {
 273   Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
 274
 275   return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_STRTAB_SECTION_NAME) == 0);
 276 }
 277
 278 STATIC
 279 Elf_Shdr *
 280 FindStrtabShdr (
 281   VOID
 282   )
 283 {
 284   UINT32 i;
 285   for (i = 0; i < mEhdr->e_shnum; i++) {
 286     Elf_Shdr *shdr = GetShdrByIndex(i);
 287     if (IsStrtabShdr(shdr)) {
 288       return shdr;
 289     }
 290   }
 291   return NULL;
 292 }
 293
 294 STATIC
 295 const UINT8 *
 296 GetSymName (
 297   Elf_Sym *Sym
 298   )
 299 {
 300   Elf_Shdr *StrtabShdr;
 301   UINT8    *StrtabContents;
 302   BOOLEAN  foundEnd;
 303   UINT32   i;
 304
 305   if (Sym->st_name == 0) {
 306     return NULL;
 307   }
 308
 309   StrtabShdr = FindStrtabShdr();
 310   if (StrtabShdr == NULL) {
 311     return NULL;
 312   }
 313
 314   assert(Sym->st_name < StrtabShdr->sh_size);
 315
 316   StrtabContents = (UINT8*)mEhdr + StrtabShdr->sh_offset;
 317
 318   foundEnd = FALSE;
 319   for (i = Sym->st_name; (i < StrtabShdr->sh_size) && !foundEnd; i++) {
 320     foundEnd = (BOOLEAN)(StrtabContents[i] == 0);
 321   }
 322   assert(foundEnd);
 323
 324   return StrtabContents + Sym->st_name;
 325 }
 326
 327 //
 328 // Elf functions interface implementation
 329 //
 330
 331 STATIC
 332 VOID
 333 ScanSections32 (
 334   VOID
 335   )
 336 {
 337   UINT32                          i;
 338   EFI_IMAGE_DOS_HEADER            *DosHdr;
 339   EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
 340   UINT32                          CoffEntry;
 341   UINT32                          SectionCount;
 342   BOOLEAN                         FoundSection;
 343
 344   CoffEntry = 0;
 345   mCoffOffset = 0;
 346
 347   //
 348   // Coff file start with a DOS header.
 349   //
 350   mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40;
 351   mNtHdrOffset = mCoffOffset;
 352   switch (mEhdr->e_machine) {
 353   case EM_386:
 354   case EM_ARM:
 355     mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS32);
 356   break;
 357   default:
 358     VerboseMsg ("%s unknown e_machine type. Assume IA-32", (UINTN)mEhdr->e_machine);
 359     mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS32);
 360   break;
 361   }
 362
 363   mTableOffset = mCoffOffset;
 364   mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER);
 365
 366   //
 367   // Set mCoffAlignment to the maximum alignment of the input sections
 368   // we care about
 369   //
 370   for (i = 0; i < mEhdr->e_shnum; i++) {
 371     Elf_Shdr *shdr = GetShdrByIndex(i);
 372     if (shdr->sh_addralign <= mCoffAlignment) {
 373       continue;
 374     }
 375     if (IsTextShdr(shdr) || IsDataShdr(shdr) || IsHiiRsrcShdr(shdr)) {
 376       mCoffAlignment = (UINT32)shdr->sh_addralign;
 377     }
 378   }
 379
 380   //
 381   // Check if mCoffAlignment is larger than MAX_COFF_ALIGNMENT
 382   //
 383   if (mCoffAlignment > MAX_COFF_ALIGNMENT) {
 384     Error (NULL, 0, 3000, "Invalid", "Section alignment is larger than MAX_COFF_ALIGNMENT.");
 385     assert (FALSE);
 386   }
 387
 388   //
 389   // Move the PE/COFF header right before the first section. This will help us
 390   // save space when converting to TE.
 391   //
 392   if (mCoffAlignment > mCoffOffset) {
 393     mNtHdrOffset += mCoffAlignment - mCoffOffset;
 394     mTableOffset += mCoffAlignment - mCoffOffset;
 395     mCoffOffset = mCoffAlignment;
 396   }
 397
 398   //
 399   // First text sections.
 400   //
 401   mCoffOffset = CoffAlign(mCoffOffset);
 402   mTextOffset = mCoffOffset;
 403   FoundSection = FALSE;
 404   SectionCount = 0;
 405   for (i = 0; i < mEhdr->e_shnum; i++) {
 406     Elf_Shdr *shdr = GetShdrByIndex(i);
 407     if (IsTextShdr(shdr)) {
 408       if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
 409         // the alignment field is valid
 410         if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
 411           // if the section address is aligned we must align PE/COFF
 412           mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);
 413         } else {
 414           Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
 415         }
 416       }
 417
 418       /* Relocate entry.  */
 419       if ((mEhdr->e_entry >= shdr->sh_addr) &&
 420           (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) {
 421         CoffEntry = mCoffOffset + mEhdr->e_entry - shdr->sh_addr;
 422       }
 423
 424       //
 425       // Set mTextOffset with the offset of the first '.text' section
 426       //
 427       if (!FoundSection) {
 428         mTextOffset = mCoffOffset;
 429         FoundSection = TRUE;
 430       }
 431
 432       mCoffSectionsOffset[i] = mCoffOffset;
 433       mCoffOffset += shdr->sh_size;
 434       SectionCount ++;
 435     }
 436   }
 437
 438   if (!FoundSection) {
 439     Error (NULL, 0, 3000, "Invalid", "Did not find any '.text' section.");
 440     assert (FALSE);
 441   }
 442
 443   mDebugOffset = DebugRvaAlign(mCoffOffset);
 444   mCoffOffset = CoffAlign(mCoffOffset);
 445
 446   if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
 447     Warning (NULL, 0, 0, NULL, "Multiple sections in %s are merged into 1 text section. Source level debug might not work correctly.", mInImageName);
 448   }
 449
 450   //
 451   //  Then data sections.
 452   //
 453   mDataOffset = mCoffOffset;
 454   FoundSection = FALSE;
 455   SectionCount = 0;
 456   for (i = 0; i < mEhdr->e_shnum; i++) {
 457     Elf_Shdr *shdr = GetShdrByIndex(i);
 458     if (IsDataShdr(shdr)) {
 459       if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
 460         // the alignment field is valid
 461         if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
 462           // if the section address is aligned we must align PE/COFF
 463           mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);
 464         } else {
 465           Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
 466         }
 467       }
 468
 469       //
 470       // Set mDataOffset with the offset of the first '.data' section
 471       //
 472       if (!FoundSection) {
 473         mDataOffset = mCoffOffset;
 474         FoundSection = TRUE;
 475       }
 476
 477       mCoffSectionsOffset[i] = mCoffOffset;
 478       mCoffOffset += shdr->sh_size;
 479       SectionCount ++;
 480     }
 481   }
 482
 483   if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
 484     Warning (NULL, 0, 0, NULL, "Multiple sections in %s are merged into 1 data section. Source level debug might not work correctly.", mInImageName);
 485   }
 486
 487   //
 488   // Make room for .debug data in .data (or .text if .data is empty) instead of
 489   // putting it in a section of its own. This is explicitly allowed by the
 490   // PE/COFF spec, and prevents bloat in the binary when using large values for
 491   // section alignment.
 492   //
 493   if (SectionCount > 0) {
 494     mDebugOffset = DebugRvaAlign(mCoffOffset);
 495   }
 496   mCoffOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +
 497                 sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +
 498                 strlen(mInImageName) + 1;
 499
 500   mCoffOffset = CoffAlign(mCoffOffset);
 501   if (SectionCount == 0) {
 502     mDataOffset = mCoffOffset;
 503   }
 504
 505   //
 506   //  The HII resource sections.
 507   //
 508   mHiiRsrcOffset = mCoffOffset;
 509   for (i = 0; i < mEhdr->e_shnum; i++) {
 510     Elf_Shdr *shdr = GetShdrByIndex(i);
 511     if (IsHiiRsrcShdr(shdr)) {
 512       if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
 513         // the alignment field is valid
 514         if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
 515           // if the section address is aligned we must align PE/COFF
 516           mCoffOffset = (mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1);
 517         } else {
 518           Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
 519         }
 520       }
 521       if (shdr->sh_size != 0) {
 522         mHiiRsrcOffset = mCoffOffset;
 523         mCoffSectionsOffset[i] = mCoffOffset;
 524         mCoffOffset += shdr->sh_size;
 525         mCoffOffset = CoffAlign(mCoffOffset);
 526         SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset);
 527       }
 528       break;
 529     }
 530   }
 531
 532   mRelocOffset = mCoffOffset;
 533
 534   //
 535   // Allocate base Coff file.  Will be expanded later for relocations.
 536   //
 537   mCoffFile = (UINT8 *)malloc(mCoffOffset);
 538   if (mCoffFile == NULL) {
 539     Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
 540   }
 541   assert (mCoffFile != NULL);
 542   memset(mCoffFile, 0, mCoffOffset);
 543
 544   //
 545   // Fill headers.
 546   //
 547   DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile;
 548   DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE;
 549   DosHdr->e_lfanew = mNtHdrOffset;
 550
 551   NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset);
 552
 553   NtHdr->Pe32.Signature = EFI_IMAGE_NT_SIGNATURE;
 554
 555   switch (mEhdr->e_machine) {
 556   case EM_386:
 557     NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_IA32;
 558     NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
 559     break;
 560   case EM_ARM:
 561     NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_ARMT;
 562     NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
 563     break;
 564   default:
 565     VerboseMsg ("%s unknown e_machine type %hu. Assume IA-32", mInImageName, mEhdr->e_machine);
 566     NtHdr->Pe32.FileHeader.Machine = EFI_IMAGE_MACHINE_IA32;
 567     NtHdr->Pe32.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
 568   }
 569
 570   NtHdr->Pe32.FileHeader.NumberOfSections = mCoffNbrSections;
 571   NtHdr->Pe32.FileHeader.TimeDateStamp = (UINT32) time(NULL);
 572   mImageTimeStamp = NtHdr->Pe32.FileHeader.TimeDateStamp;
 573   NtHdr->Pe32.FileHeader.PointerToSymbolTable = 0;
 574   NtHdr->Pe32.FileHeader.NumberOfSymbols = 0;
 575   NtHdr->Pe32.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32.OptionalHeader);
 576   NtHdr->Pe32.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE
 577     | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED
 578     | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED
 579     | EFI_IMAGE_FILE_32BIT_MACHINE;
 580
 581   NtHdr->Pe32.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset;
 582   NtHdr->Pe32.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset;
 583   NtHdr->Pe32.OptionalHeader.SizeOfUninitializedData = 0;
 584   NtHdr->Pe32.OptionalHeader.AddressOfEntryPoint = CoffEntry;
 585
 586   NtHdr->Pe32.OptionalHeader.BaseOfCode = mTextOffset;
 587
 588   NtHdr->Pe32.OptionalHeader.BaseOfData = mDataOffset;
 589   NtHdr->Pe32.OptionalHeader.ImageBase = 0;
 590   NtHdr->Pe32.OptionalHeader.SectionAlignment = mCoffAlignment;
 591   NtHdr->Pe32.OptionalHeader.FileAlignment = mCoffAlignment;
 592   NtHdr->Pe32.OptionalHeader.SizeOfImage = 0;
 593
 594   NtHdr->Pe32.OptionalHeader.SizeOfHeaders = mTextOffset;
 595   NtHdr->Pe32.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;
 596
 597   //
 598   // Section headers.
 599   //
 600   if ((mDataOffset - mTextOffset) > 0) {
 601     CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset,
 602             EFI_IMAGE_SCN_CNT_CODE
 603             | EFI_IMAGE_SCN_MEM_EXECUTE
 604             | EFI_IMAGE_SCN_MEM_READ);
 605   } else {
 606     // Don't make a section of size 0.
 607     NtHdr->Pe32.FileHeader.NumberOfSections--;
 608   }
 609
 610   if ((mHiiRsrcOffset - mDataOffset) > 0) {
 611     CreateSectionHeader (".data", mDataOffset, mHiiRsrcOffset - mDataOffset,
 612             EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
 613             | EFI_IMAGE_SCN_MEM_WRITE
 614             | EFI_IMAGE_SCN_MEM_READ);
 615   } else {
 616     // Don't make a section of size 0.
 617     NtHdr->Pe32.FileHeader.NumberOfSections--;
 618   }
 619
 620   if ((mRelocOffset - mHiiRsrcOffset) > 0) {
 621     CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset,
 622             EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
 623             | EFI_IMAGE_SCN_MEM_READ);
 624
 625     NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset;
 626     NtHdr->Pe32.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset;
 627   } else {
 628     // Don't make a section of size 0.
 629     NtHdr->Pe32.FileHeader.NumberOfSections--;
 630   }
 631
 632 }
 633
 634 STATIC
 635 BOOLEAN
 636 WriteSections32 (
 637   SECTION_FILTER_TYPES  FilterType
 638   )
 639 {
 640   UINT32      Idx;
 641   Elf_Shdr    *SecShdr;
 642   UINT32      SecOffset;
 643   BOOLEAN     (*Filter)(Elf_Shdr *);
 644
 645   //
 646   // Initialize filter pointer
 647   //
 648   switch (FilterType) {
 649     case SECTION_TEXT:
 650       Filter = IsTextShdr;
 651       break;
 652     case SECTION_HII:
 653       Filter = IsHiiRsrcShdr;
 654       break;
 655     case SECTION_DATA:
 656       Filter = IsDataShdr;
 657       break;
 658     default:
 659       return FALSE;
 660   }
 661
 662   //
 663   // First: copy sections.
 664   //
 665   for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
 666     Elf_Shdr *Shdr = GetShdrByIndex(Idx);
 667     if ((*Filter)(Shdr)) {
 668       switch (Shdr->sh_type) {
 669       case SHT_PROGBITS:
 670         /* Copy.  */
 671         if (Shdr->sh_offset + Shdr->sh_size > mFileBufferSize) {
 672           return FALSE;
 673         }
 674         memcpy(mCoffFile + mCoffSectionsOffset[Idx],
 675               (UINT8*)mEhdr + Shdr->sh_offset,
 676               Shdr->sh_size);
 677         break;
 678
 679       case SHT_NOBITS:
 680         memset(mCoffFile + mCoffSectionsOffset[Idx], 0, Shdr->sh_size);
 681         break;
 682
 683       default:
 684         //
 685         //  Ignore for unknown section type.
 686         //
 687         VerboseMsg ("%s unknown section type %x. We ignore this unknown section type.", mInImageName, (unsigned)Shdr->sh_type);
 688         break;
 689       }
 690     }
 691   }
 692
 693   //
 694   // Second: apply relocations.
 695   //
 696   for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
 697     //
 698     // Determine if this is a relocation section.
 699     //
 700     Elf_Shdr *RelShdr = GetShdrByIndex(Idx);
 701     if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {
 702       continue;
 703     }
 704
 705     //
 706     // Relocation section found.  Now extract section information that the relocations
 707     // apply to in the ELF data and the new COFF data.
 708     //
 709     SecShdr = GetShdrByIndex(RelShdr->sh_info);
 710     SecOffset = mCoffSectionsOffset[RelShdr->sh_info];
 711
 712     //
 713     // Only process relocations for the current filter type.
 714     //
 715     if (RelShdr->sh_type == SHT_REL && (*Filter)(SecShdr)) {
 716       UINT32 RelOffset;
 717
 718       //
 719       // Determine the symbol table referenced by the relocation data.
 720       //
 721       Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link);
 722       UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;
 723
 724       //
 725       // Process all relocation entries for this section.
 726       //
 727       for (RelOffset = 0; RelOffset < RelShdr->sh_size; RelOffset += RelShdr->sh_entsize) {
 728         //
 729         // Set pointer to relocation entry
 730         //
 731         Elf_Rel *Rel = (Elf_Rel *)((UINT8*)mEhdr + RelShdr->sh_offset + RelOffset);
 732
 733         //
 734         // Set pointer to symbol table entry associated with the relocation entry.
 735         //
 736         Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);
 737
 738         Elf_Shdr *SymShdr;
 739         UINT8 *Targ;
 740         UINT16 Address;
 741
 742         //
 743         // Check section header index found in symbol table and get the section
 744         // header location.
 745         //
 746         if (Sym->st_shndx == SHN_UNDEF
 747             || Sym->st_shndx >= mEhdr->e_shnum) {
 748           const UINT8 *SymName = GetSymName(Sym);
 749           if (SymName == NULL) {
 750             SymName = (const UINT8 *)"<unknown>";
 751           }
 752           continue;
 753         }
 754         SymShdr = GetShdrByIndex(Sym->st_shndx);
 755
 756         //
 757         // Convert the relocation data to a pointer into the coff file.
 758         //
 759         // Note:
 760         //   r_offset is the virtual address of the storage unit to be relocated.
 761         //   sh_addr is the virtual address for the base of the section.
 762         //
 763         Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr);
 764
 765         //
 766         // Determine how to handle each relocation type based on the machine type.
 767         //
 768         if (mEhdr->e_machine == EM_386) {
 769           switch (ELF_R_TYPE(Rel->r_info)) {
 770           case R_386_NONE:
 771             break;
 772           case R_386_32:
 773             //
 774             // Absolute relocation.
 775             //  Converts Targ from a absolute virtual address to the absolute
 776             //  COFF address.
 777             //
 778             *(UINT32 *)Targ = *(UINT32 *)Targ - SymShdr->sh_addr
 779               + mCoffSectionsOffset[Sym->st_shndx];
 780             break;
 781           case R_386_PC32:
 782             //
 783             // Relative relocation: Symbol - Ip + Addend
 784             //
 785             *(UINT32 *)Targ = *(UINT32 *)Targ
 786               + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr)
 787               - (SecOffset - SecShdr->sh_addr);
 788             break;
 789           default:
 790             Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_386 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
 791           }
 792         } else if (mEhdr->e_machine == EM_ARM) {
 793           switch (ELF32_R_TYPE(Rel->r_info)) {
 794           case R_ARM_RBASE:
 795             // No relocation - no action required
 796             // break skipped
 797
 798           case R_ARM_PC24:
 799           case R_ARM_REL32:
 800           case R_ARM_XPC25:
 801           case R_ARM_THM_PC22:
 802           case R_ARM_THM_JUMP19:
 803           case R_ARM_CALL:
 804           case R_ARM_JMP24:
 805           case R_ARM_THM_JUMP24:
 806           case R_ARM_PREL31:
 807           case R_ARM_MOVW_PREL_NC:
 808           case R_ARM_MOVT_PREL:
 809           case R_ARM_THM_MOVW_PREL_NC:
 810           case R_ARM_THM_MOVT_PREL:
 811           case R_ARM_THM_JMP6:
 812           case R_ARM_THM_ALU_PREL_11_0:
 813           case R_ARM_THM_PC12:
 814           case R_ARM_REL32_NOI:
 815           case R_ARM_ALU_PC_G0_NC:
 816           case R_ARM_ALU_PC_G0:
 817           case R_ARM_ALU_PC_G1_NC:
 818           case R_ARM_ALU_PC_G1:
 819           case R_ARM_ALU_PC_G2:
 820           case R_ARM_LDR_PC_G1:
 821           case R_ARM_LDR_PC_G2:
 822           case R_ARM_LDRS_PC_G0:
 823           case R_ARM_LDRS_PC_G1:
 824           case R_ARM_LDRS_PC_G2:
 825           case R_ARM_LDC_PC_G0:
 826           case R_ARM_LDC_PC_G1:
 827           case R_ARM_LDC_PC_G2:
 828           case R_ARM_THM_JUMP11:
 829           case R_ARM_THM_JUMP8:
 830           case R_ARM_TLS_GD32:
 831           case R_ARM_TLS_LDM32:
 832           case R_ARM_TLS_IE32:
 833             // Thease are all PC-relative relocations and don't require modification
 834             // GCC does not seem to have the concept of a application that just needs to get relocated.
 835             break;
 836
 837           case R_ARM_THM_MOVW_ABS_NC:
 838             // MOVW is only lower 16-bits of the addres
 839             Address = (UINT16)(Sym->st_value - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);
 840             ThumbMovtImmediatePatch ((UINT16 *)Targ, Address);
 841             break;
 842
 843           case R_ARM_THM_MOVT_ABS:
 844             // MOVT is only upper 16-bits of the addres
 845             Address = (UINT16)((Sym->st_value - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]) >> 16);
 846             ThumbMovtImmediatePatch ((UINT16 *)Targ, Address);
 847             break;
 848
 849           case R_ARM_ABS32:
 850           case R_ARM_RABS32:
 851             //
 852             // Absolute relocation.
 853             //
 854             *(UINT32 *)Targ = *(UINT32 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
 855             break;
 856
 857           default:
 858             Error (NULL, 0, 3000, "Invalid", "WriteSections (): %s unsupported ELF EM_ARM relocation 0x%x.", mInImageName, (unsigned) ELF32_R_TYPE(Rel->r_info));
 859           }
 860         }
 861       }
 862     }
 863   }
 864
 865   return TRUE;
 866 }
 867
 868 UINTN gMovwOffset = 0;
 869
 870 STATIC
 871 VOID
 872 WriteRelocations32 (
 873   VOID
 874   )
 875 {
 876   UINT32                           Index;
 877   EFI_IMAGE_OPTIONAL_HEADER_UNION  *NtHdr;
 878   EFI_IMAGE_DATA_DIRECTORY         *Dir;
 879   BOOLEAN                          FoundRelocations;
 880   Elf_Dyn                          *Dyn;
 881   Elf_Rel                          *Rel;
 882   UINTN                            RelElementSize;
 883   UINTN                            RelSize;
 884   UINTN                            RelOffset;
 885   UINTN                            K;
 886   Elf32_Phdr                       *DynamicSegment;
 887
 888   for (Index = 0, FoundRelocations = FALSE; Index < mEhdr->e_shnum; Index++) {
 889     Elf_Shdr *RelShdr = GetShdrByIndex(Index);
 890     if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) {
 891       Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info);
 892       if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) {
 893         UINT32 RelIdx;
 894
 895         FoundRelocations = TRUE;
 896         for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) {
 897           Rel = (Elf_Rel *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);
 898
 899           if (mEhdr->e_machine == EM_386) {
 900             switch (ELF_R_TYPE(Rel->r_info)) {
 901             case R_386_NONE:
 902             case R_386_PC32:
 903               //
 904               // No fixup entry required.
 905               //
 906               break;
 907             case R_386_32:
 908               //
 909               // Creates a relative relocation entry from the absolute entry.
 910               //
 911               CoffAddFixup(mCoffSectionsOffset[RelShdr->sh_info]
 912               + (Rel->r_offset - SecShdr->sh_addr),
 913               EFI_IMAGE_REL_BASED_HIGHLOW);
 914               break;
 915             default:
 916               Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_386 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
 917             }
 918           } else if (mEhdr->e_machine == EM_ARM) {
 919             switch (ELF32_R_TYPE(Rel->r_info)) {
 920             case R_ARM_RBASE:
 921               // No relocation - no action required
 922               // break skipped
 923
 924             case R_ARM_PC24:
 925             case R_ARM_REL32:
 926             case R_ARM_XPC25:
 927             case R_ARM_THM_PC22:
 928             case R_ARM_THM_JUMP19:
 929             case R_ARM_CALL:
 930             case R_ARM_JMP24:
 931             case R_ARM_THM_JUMP24:
 932             case R_ARM_PREL31:
 933             case R_ARM_MOVW_PREL_NC:
 934             case R_ARM_MOVT_PREL:
 935             case R_ARM_THM_MOVW_PREL_NC:
 936             case R_ARM_THM_MOVT_PREL:
 937             case R_ARM_THM_JMP6:
 938             case R_ARM_THM_ALU_PREL_11_0:
 939             case R_ARM_THM_PC12:
 940             case R_ARM_REL32_NOI:
 941             case R_ARM_ALU_PC_G0_NC:
 942             case R_ARM_ALU_PC_G0:
 943             case R_ARM_ALU_PC_G1_NC:
 944             case R_ARM_ALU_PC_G1:
 945             case R_ARM_ALU_PC_G2:
 946             case R_ARM_LDR_PC_G1:
 947             case R_ARM_LDR_PC_G2:
 948             case R_ARM_LDRS_PC_G0:
 949             case R_ARM_LDRS_PC_G1:
 950             case R_ARM_LDRS_PC_G2:
 951             case R_ARM_LDC_PC_G0:
 952             case R_ARM_LDC_PC_G1:
 953             case R_ARM_LDC_PC_G2:
 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, unknown 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 = 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