[mirror_edk2.git] / BaseTools / Source / C / GenFw / Elf64Convert.c

/** @file\r
Elf64 convert solution\r
\r
Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>\r
Portions copyright (c) 2013-2014, ARM Ltd. All rights reserved.<BR>\r
\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "WinNtInclude.h"\r
\r
#ifndef __GNUC__\r
#include <windows.h>\r
#include <io.h>\r
#endif\r
#include <assert.h>\r
#include <stdio.h>\r
#include <stdlib.h>\r
#include <string.h>\r
#include <time.h>\r
#include <ctype.h>\r
\r
#include <Common/UefiBaseTypes.h>\r
#include <IndustryStandard/PeImage.h>\r
\r
#include "PeCoffLib.h"\r
#include "EfiUtilityMsgs.h"\r
\r
#include "GenFw.h"\r
#include "ElfConvert.h"\r
#include "Elf64Convert.h"\r
\r
STATIC\r
VOID\r
ScanSections64 (\r
  VOID\r
  );\r
\r
STATIC\r
BOOLEAN\r
WriteSections64 (\r
  SECTION_FILTER_TYPES  FilterType\r
  );\r
\r
STATIC\r
VOID\r
WriteRelocations64 (\r
  VOID\r
  );\r
\r
STATIC\r
VOID\r
WriteDebug64 (\r
  VOID\r
  );\r
\r
STATIC\r
VOID\r
SetImageSize64 (\r
  VOID\r
  );\r
\r
STATIC\r
VOID\r
CleanUp64 (\r
  VOID\r
  );\r
\r
//\r
// Rename ELF32 structures to common names to help when porting to ELF64.\r
//\r
typedef Elf64_Shdr Elf_Shdr;\r
typedef Elf64_Ehdr Elf_Ehdr;\r
typedef Elf64_Rel Elf_Rel;\r
typedef Elf64_Rela Elf_Rela;\r
typedef Elf64_Sym Elf_Sym;\r
typedef Elf64_Phdr Elf_Phdr;\r
typedef Elf64_Dyn Elf_Dyn;\r
#define ELFCLASS ELFCLASS64\r
#define ELF_R_TYPE(r) ELF64_R_TYPE(r)\r
#define ELF_R_SYM(r) ELF64_R_SYM(r)\r
\r
//\r
// Well known ELF structures.\r
//\r
STATIC Elf_Ehdr *mEhdr;\r
STATIC Elf_Shdr *mShdrBase;\r
STATIC Elf_Phdr *mPhdrBase;\r
\r
//\r
// GOT information\r
//\r
STATIC Elf_Shdr *mGOTShdr = NULL;\r
STATIC UINT32   mGOTShindex = 0;\r
STATIC UINT32   *mGOTCoffEntries = NULL;\r
STATIC UINT32   mGOTMaxCoffEntries = 0;\r
STATIC UINT32   mGOTNumCoffEntries = 0;\r
\r
//\r
// Coff information\r
//\r
STATIC UINT32 mCoffAlignment = 0x20;\r
\r
//\r
// PE section alignment.\r
//\r
STATIC const UINT16 mCoffNbrSections = 4;\r
\r
//\r
// ELF sections to offset in Coff file.\r
//\r
STATIC UINT32 *mCoffSectionsOffset = NULL;\r
\r
//\r
// Offsets in COFF file\r
//\r
STATIC UINT32 mNtHdrOffset;\r
STATIC UINT32 mTextOffset;\r
STATIC UINT32 mDataOffset;\r
STATIC UINT32 mHiiRsrcOffset;\r
STATIC UINT32 mRelocOffset;\r
STATIC UINT32 mDebugOffset;\r
\r
//\r
// Initialization Function\r
//\r
BOOLEAN\r
InitializeElf64 (\r
  UINT8               *FileBuffer,\r
  ELF_FUNCTION_TABLE  *ElfFunctions\r
  )\r
{\r
  //\r
  // Initialize data pointer and structures.\r
  //\r
  VerboseMsg ("Set EHDR");\r
  mEhdr = (Elf_Ehdr*) FileBuffer;\r
\r
  //\r
  // Check the ELF64 specific header information.\r
  //\r
  VerboseMsg ("Check ELF64 Header Information");\r
  if (mEhdr->e_ident[EI_CLASS] != ELFCLASS64) {\r
    Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS64");\r
    return FALSE;\r
  }\r
  if (mEhdr->e_ident[EI_DATA] != ELFDATA2LSB) {\r
    Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFDATA2LSB");\r
    return FALSE;\r
  }\r
  if ((mEhdr->e_type != ET_EXEC) && (mEhdr->e_type != ET_DYN)) {\r
    Error (NULL, 0, 3000, "Unsupported", "ELF e_type not ET_EXEC or ET_DYN");\r
    return FALSE;\r
  }\r
  if (!((mEhdr->e_machine == EM_X86_64) || (mEhdr->e_machine == EM_AARCH64))) {\r
    Error (NULL, 0, 3000, "Unsupported", "ELF e_machine not EM_X86_64 or EM_AARCH64");\r
    return FALSE;\r
  }\r
  if (mEhdr->e_version != EV_CURRENT) {\r
    Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT);\r
    return FALSE;\r
  }\r
\r
  //\r
  // Update section header pointers\r
  //\r
  VerboseMsg ("Update Header Pointers");\r
  mShdrBase  = (Elf_Shdr *)((UINT8 *)mEhdr + mEhdr->e_shoff);\r
  mPhdrBase = (Elf_Phdr *)((UINT8 *)mEhdr + mEhdr->e_phoff);\r
\r
  //\r
  // Create COFF Section offset buffer and zero.\r
  //\r
  VerboseMsg ("Create COFF Section Offset Buffer");\r
  mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32));\r
  if (mCoffSectionsOffset == NULL) {\r
    Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");\r
    return FALSE;\r
  }\r
  memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32));\r
\r
  //\r
  // Fill in function pointers.\r
  //\r
  VerboseMsg ("Fill in Function Pointers");\r
  ElfFunctions->ScanSections = ScanSections64;\r
  ElfFunctions->WriteSections = WriteSections64;\r
  ElfFunctions->WriteRelocations = WriteRelocations64;\r
  ElfFunctions->WriteDebug = WriteDebug64;\r
  ElfFunctions->SetImageSize = SetImageSize64;\r
  ElfFunctions->CleanUp = CleanUp64;\r
\r
  return TRUE;\r
}\r
\r
\r
//\r
// Header by Index functions\r
//\r
STATIC\r
Elf_Shdr*\r
GetShdrByIndex (\r
  UINT32 Num\r
  )\r
{\r
  if (Num >= mEhdr->e_shnum) {\r
    Error (NULL, 0, 3000, "Invalid", "GetShdrByIndex: Index %u is too high.", Num);\r
    exit(EXIT_FAILURE);\r
  }\r
\r
  return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize);\r
}\r
\r
STATIC\r
UINT32\r
CoffAlign (\r
  UINT32 Offset\r
  )\r
{\r
  return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1);\r
}\r
\r
STATIC\r
UINT32\r
DebugRvaAlign (\r
  UINT32 Offset\r
  )\r
{\r
  return (Offset + 3) & ~3;\r
}\r
\r
//\r
// filter functions\r
//\r
STATIC\r
BOOLEAN\r
IsTextShdr (\r
  Elf_Shdr *Shdr\r
  )\r
{\r
  return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC);\r
}\r
\r
STATIC\r
BOOLEAN\r
IsHiiRsrcShdr (\r
  Elf_Shdr *Shdr\r
  )\r
{\r
  Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);\r
\r
  return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0);\r
}\r
\r
STATIC\r
BOOLEAN\r
IsDataShdr (\r
  Elf_Shdr *Shdr\r
  )\r
{\r
  if (IsHiiRsrcShdr(Shdr)) {\r
    return FALSE;\r
  }\r
  return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE);\r
}\r
\r
STATIC\r
BOOLEAN\r
IsStrtabShdr (\r
  Elf_Shdr *Shdr\r
  )\r
{\r
  Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);\r
\r
  return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_STRTAB_SECTION_NAME) == 0);\r
}\r
\r
STATIC\r
Elf_Shdr *\r
FindStrtabShdr (\r
  VOID\r
  )\r
{\r
  UINT32 i;\r
  for (i = 0; i < mEhdr->e_shnum; i++) {\r
    Elf_Shdr *shdr = GetShdrByIndex(i);\r
    if (IsStrtabShdr(shdr)) {\r
      return shdr;\r
    }\r
  }\r
  return NULL;\r
}\r
\r
STATIC\r
const UINT8 *\r
GetSymName (\r
  Elf_Sym *Sym\r
  )\r
{\r
  Elf_Shdr *StrtabShdr;\r
  UINT8    *StrtabContents;\r
  BOOLEAN  foundEnd;\r
  UINT32   i;\r
\r
  if (Sym->st_name == 0) {\r
    return NULL;\r
  }\r
\r
  StrtabShdr = FindStrtabShdr();\r
  if (StrtabShdr == NULL) {\r
    return NULL;\r
  }\r
\r
  assert(Sym->st_name < StrtabShdr->sh_size);\r
\r
  StrtabContents = (UINT8*)mEhdr + StrtabShdr->sh_offset;\r
\r
  foundEnd = FALSE;\r
  for (i= Sym->st_name; (i < StrtabShdr->sh_size) && !foundEnd; i++) {\r
    foundEnd = (BOOLEAN)(StrtabContents[i] == 0);\r
  }\r
  assert(foundEnd);\r
\r
  return StrtabContents + Sym->st_name;\r
}\r
\r
//\r
// Find the ELF section hosting the GOT from an ELF Rva\r
//   of a single GOT entry.  Normally, GOT is placed in\r
//   ELF .text section, so assume once we find in which\r
//   section the GOT is, all GOT entries are there, and\r
//   just verify this.\r
//\r
STATIC\r
VOID\r
FindElfGOTSectionFromGOTEntryElfRva (\r
  Elf64_Addr GOTEntryElfRva\r
  )\r
{\r
  UINT32 i;\r
  if (mGOTShdr != NULL) {\r
    if (GOTEntryElfRva >= mGOTShdr->sh_addr &&\r
        GOTEntryElfRva <  mGOTShdr->sh_addr + mGOTShdr->sh_size) {\r
      return;\r
    }\r
    Error (NULL, 0, 3000, "Unsupported", "FindElfGOTSectionFromGOTEntryElfRva: GOT entries found in multiple sections.");\r
    exit(EXIT_FAILURE);\r
  }\r
  for (i = 0; i < mEhdr->e_shnum; i++) {\r
    Elf_Shdr *shdr = GetShdrByIndex(i);\r
    if (GOTEntryElfRva >= shdr->sh_addr &&\r
        GOTEntryElfRva <  shdr->sh_addr + shdr->sh_size) {\r
      mGOTShdr = shdr;\r
      mGOTShindex = i;\r
      return;\r
    }\r
  }\r
  Error (NULL, 0, 3000, "Invalid", "FindElfGOTSectionFromGOTEntryElfRva: ElfRva 0x%016LX for GOT entry not found in any section.", GOTEntryElfRva);\r
  exit(EXIT_FAILURE);\r
}\r
\r
//\r
// Stores locations of GOT entries in COFF image.\r
//   Returns TRUE if GOT entry is new.\r
//   Simple implementation as number of GOT\r
//   entries is expected to be low.\r
//\r
\r
STATIC\r
BOOLEAN\r
AccumulateCoffGOTEntries (\r
  UINT32 GOTCoffEntry\r
  )\r
{\r
  UINT32 i;\r
  if (mGOTCoffEntries != NULL) {\r
    for (i = 0; i < mGOTNumCoffEntries; i++) {\r
      if (mGOTCoffEntries[i] == GOTCoffEntry) {\r
        return FALSE;\r
      }\r
    }\r
  }\r
  if (mGOTCoffEntries == NULL) {\r
    mGOTCoffEntries = (UINT32*)malloc(5 * sizeof *mGOTCoffEntries);\r
    if (mGOTCoffEntries == NULL) {\r
      Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");\r
    }\r
    assert (mGOTCoffEntries != NULL);\r
    mGOTMaxCoffEntries = 5;\r
    mGOTNumCoffEntries = 0;\r
  } else if (mGOTNumCoffEntries == mGOTMaxCoffEntries) {\r
    mGOTCoffEntries = (UINT32*)realloc(mGOTCoffEntries, 2 * mGOTMaxCoffEntries * sizeof *mGOTCoffEntries);\r
    if (mGOTCoffEntries == NULL) {\r
      Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");\r
    }\r
    assert (mGOTCoffEntries != NULL);\r
    mGOTMaxCoffEntries += mGOTMaxCoffEntries;\r
  }\r
  mGOTCoffEntries[mGOTNumCoffEntries++] = GOTCoffEntry;\r
  return TRUE;\r
}\r
\r
//\r
// 32-bit Unsigned integer comparator for qsort.\r
//\r
STATIC\r
int\r
UINT32Comparator (\r
  const void* lhs,\r
  const void* rhs\r
  )\r
{\r
  if (*(const UINT32*)lhs < *(const UINT32*)rhs) {\r
    return -1;\r
  }\r
  return *(const UINT32*)lhs > *(const UINT32*)rhs;\r
}\r
\r
//\r
// Emit accumulated Coff GOT entry relocations into\r
//   Coff image.  This function performs its job\r
//   once and then releases the entry list, so\r
//   it can safely be called multiple times.\r
//\r
STATIC\r
VOID\r
EmitGOTRelocations (\r
  VOID\r
  )\r
{\r
  UINT32 i;\r
  if (mGOTCoffEntries == NULL) {\r
    return;\r
  }\r
  //\r
  // Emit Coff relocations with Rvas ordered.\r
  //\r
  qsort(\r
    mGOTCoffEntries,\r
    mGOTNumCoffEntries,\r
    sizeof *mGOTCoffEntries,\r
    UINT32Comparator);\r
  for (i = 0; i < mGOTNumCoffEntries; i++) {\r
    VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08X", mGOTCoffEntries[i]);\r
    CoffAddFixup(\r
      mGOTCoffEntries[i],\r
      EFI_IMAGE_REL_BASED_DIR64);\r
  }\r
  free(mGOTCoffEntries);\r
  mGOTCoffEntries = NULL;\r
  mGOTMaxCoffEntries = 0;\r
  mGOTNumCoffEntries = 0;\r
}\r
\r
//\r
// Elf functions interface implementation\r
//\r
\r
STATIC\r
VOID\r
ScanSections64 (\r
  VOID\r
  )\r
{\r
  UINT32                          i;\r
  EFI_IMAGE_DOS_HEADER            *DosHdr;\r
  EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r
  UINT32                          CoffEntry;\r
  UINT32                          SectionCount;\r
  BOOLEAN                         FoundSection;\r
\r
  CoffEntry = 0;\r
  mCoffOffset = 0;\r
\r
  //\r
  // Coff file start with a DOS header.\r
  //\r
  mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40;\r
  mNtHdrOffset = mCoffOffset;\r
  switch (mEhdr->e_machine) {\r
  case EM_X86_64:\r
  case EM_AARCH64:\r
    mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64);\r
  break;\r
  default:\r
    VerboseMsg ("%s unknown e_machine type %hu. Assume X64", mInImageName, mEhdr->e_machine);\r
    mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64);\r
  break;\r
  }\r
\r
  mTableOffset = mCoffOffset;\r
  mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER);\r
\r
  //\r
  // Set mCoffAlignment to the maximum alignment of the input sections\r
  // we care about\r
  //\r
  for (i = 0; i < mEhdr->e_shnum; i++) {\r
    Elf_Shdr *shdr = GetShdrByIndex(i);\r
    if (shdr->sh_addralign <= mCoffAlignment) {\r
      continue;\r
    }\r
    if (IsTextShdr(shdr) || IsDataShdr(shdr) || IsHiiRsrcShdr(shdr)) {\r
      mCoffAlignment = (UINT32)shdr->sh_addralign;\r
    }\r
  }\r
\r
  //\r
  // Check if mCoffAlignment is larger than MAX_COFF_ALIGNMENT\r
  //\r
  if (mCoffAlignment > MAX_COFF_ALIGNMENT) {\r
    Error (NULL, 0, 3000, "Invalid", "Section alignment is larger than MAX_COFF_ALIGNMENT.");\r
    assert (FALSE);\r
  }\r
\r
\r
  //\r
  // Move the PE/COFF header right before the first section. This will help us\r
  // save space when converting to TE.\r
  //\r
  if (mCoffAlignment > mCoffOffset) {\r
    mNtHdrOffset += mCoffAlignment - mCoffOffset;\r
    mTableOffset += mCoffAlignment - mCoffOffset;\r
    mCoffOffset = mCoffAlignment;\r
  }\r
\r
  //\r
  // First text sections.\r
  //\r
  mCoffOffset = CoffAlign(mCoffOffset);\r
  mTextOffset = mCoffOffset;\r
  FoundSection = FALSE;\r
  SectionCount = 0;\r
  for (i = 0; i < mEhdr->e_shnum; i++) {\r
    Elf_Shdr *shdr = GetShdrByIndex(i);\r
    if (IsTextShdr(shdr)) {\r
      if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {\r
        // the alignment field is valid\r
        if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {\r
          // if the section address is aligned we must align PE/COFF\r
          mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));\r
        } else {\r
          Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");\r
        }\r
      }\r
\r
      /* Relocate entry.  */\r
      if ((mEhdr->e_entry >= shdr->sh_addr) &&\r
          (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) {\r
        CoffEntry = (UINT32) (mCoffOffset + mEhdr->e_entry - shdr->sh_addr);\r
      }\r
\r
      //\r
      // Set mTextOffset with the offset of the first '.text' section\r
      //\r
      if (!FoundSection) {\r
        mTextOffset = mCoffOffset;\r
        FoundSection = TRUE;\r
      }\r
\r
      mCoffSectionsOffset[i] = mCoffOffset;\r
      mCoffOffset += (UINT32) shdr->sh_size;\r
      SectionCount ++;\r
    }\r
  }\r
\r
  if (!FoundSection) {\r
    Error (NULL, 0, 3000, "Invalid", "Did not find any '.text' section.");\r
    assert (FALSE);\r
  }\r
\r
  mDebugOffset = DebugRvaAlign(mCoffOffset);\r
  mCoffOffset = CoffAlign(mCoffOffset);\r
\r
  if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {\r
    Warning (NULL, 0, 0, NULL, "Multiple sections in %s are merged into 1 text section. Source level debug might not work correctly.", mInImageName);\r
  }\r
\r
  //\r
  //  Then data sections.\r
  //\r
  mDataOffset = mCoffOffset;\r
  FoundSection = FALSE;\r
  SectionCount = 0;\r
  for (i = 0; i < mEhdr->e_shnum; i++) {\r
    Elf_Shdr *shdr = GetShdrByIndex(i);\r
    if (IsDataShdr(shdr)) {\r
      if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {\r
        // the alignment field is valid\r
        if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {\r
          // if the section address is aligned we must align PE/COFF\r
          mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));\r
        } else {\r
          Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");\r
        }\r
      }\r
\r
      //\r
      // Set mDataOffset with the offset of the first '.data' section\r
      //\r
      if (!FoundSection) {\r
        mDataOffset = mCoffOffset;\r
        FoundSection = TRUE;\r
      }\r
      mCoffSectionsOffset[i] = mCoffOffset;\r
      mCoffOffset += (UINT32) shdr->sh_size;\r
      SectionCount ++;\r
    }\r
  }\r
\r
  //\r
  // Make room for .debug data in .data (or .text if .data is empty) instead of\r
  // putting it in a section of its own. This is explicitly allowed by the\r
  // PE/COFF spec, and prevents bloat in the binary when using large values for\r
  // section alignment.\r
  //\r
  if (SectionCount > 0) {\r
    mDebugOffset = DebugRvaAlign(mCoffOffset);\r
  }\r
  mCoffOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +\r
                sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +\r
                strlen(mInImageName) + 1;\r
\r
  mCoffOffset = CoffAlign(mCoffOffset);\r
  if (SectionCount == 0) {\r
    mDataOffset = mCoffOffset;\r
  }\r
\r
  if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {\r
    Warning (NULL, 0, 0, NULL, "Multiple sections in %s are merged into 1 data section. Source level debug might not work correctly.", mInImageName);\r
  }\r
\r
  //\r
  //  The HII resource sections.\r
  //\r
  mHiiRsrcOffset = mCoffOffset;\r
  for (i = 0; i < mEhdr->e_shnum; i++) {\r
    Elf_Shdr *shdr = GetShdrByIndex(i);\r
    if (IsHiiRsrcShdr(shdr)) {\r
      if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {\r
        // the alignment field is valid\r
        if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {\r
          // if the section address is aligned we must align PE/COFF\r
          mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));\r
        } else {\r
          Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");\r
        }\r
      }\r
      if (shdr->sh_size != 0) {\r
        mHiiRsrcOffset = mCoffOffset;\r
        mCoffSectionsOffset[i] = mCoffOffset;\r
        mCoffOffset += (UINT32) shdr->sh_size;\r
        mCoffOffset = CoffAlign(mCoffOffset);\r
        SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset);\r
      }\r
      break;\r
    }\r
  }\r
\r
  mRelocOffset = mCoffOffset;\r
\r
  //\r
  // Allocate base Coff file.  Will be expanded later for relocations.\r
  //\r
  mCoffFile = (UINT8 *)malloc(mCoffOffset);\r
  if (mCoffFile == NULL) {\r
    Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");\r
  }\r
  assert (mCoffFile != NULL);\r
  memset(mCoffFile, 0, mCoffOffset);\r
\r
  //\r
  // Fill headers.\r
  //\r
  DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile;\r
  DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE;\r
  DosHdr->e_lfanew = mNtHdrOffset;\r
\r
  NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset);\r
\r
  NtHdr->Pe32Plus.Signature = EFI_IMAGE_NT_SIGNATURE;\r
\r
  switch (mEhdr->e_machine) {\r
  case EM_X86_64:\r
    NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_X64;\r
    NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;\r
    break;\r
  case EM_AARCH64:\r
    NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_AARCH64;\r
    NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;\r
    break;\r
  default:\r
    VerboseMsg ("%s unknown e_machine type. Assume X64", (UINTN)mEhdr->e_machine);\r
    NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_X64;\r
    NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;\r
  }\r
\r
  NtHdr->Pe32Plus.FileHeader.NumberOfSections = mCoffNbrSections;\r
  NtHdr->Pe32Plus.FileHeader.TimeDateStamp = (UINT32) time(NULL);\r
  mImageTimeStamp = NtHdr->Pe32Plus.FileHeader.TimeDateStamp;\r
  NtHdr->Pe32Plus.FileHeader.PointerToSymbolTable = 0;\r
  NtHdr->Pe32Plus.FileHeader.NumberOfSymbols = 0;\r
  NtHdr->Pe32Plus.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32Plus.OptionalHeader);\r
  NtHdr->Pe32Plus.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE\r
    | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED\r
    | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED\r
    | EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE;\r
\r
  NtHdr->Pe32Plus.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset;\r
  NtHdr->Pe32Plus.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset;\r
  NtHdr->Pe32Plus.OptionalHeader.SizeOfUninitializedData = 0;\r
  NtHdr->Pe32Plus.OptionalHeader.AddressOfEntryPoint = CoffEntry;\r
\r
  NtHdr->Pe32Plus.OptionalHeader.BaseOfCode = mTextOffset;\r
\r
  NtHdr->Pe32Plus.OptionalHeader.ImageBase = 0;\r
  NtHdr->Pe32Plus.OptionalHeader.SectionAlignment = mCoffAlignment;\r
  NtHdr->Pe32Plus.OptionalHeader.FileAlignment = mCoffAlignment;\r
  NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = 0;\r
\r
  NtHdr->Pe32Plus.OptionalHeader.SizeOfHeaders = mTextOffset;\r
  NtHdr->Pe32Plus.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;\r
\r
  //\r
  // Section headers.\r
  //\r
  if ((mDataOffset - mTextOffset) > 0) {\r
    CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset,\r
            EFI_IMAGE_SCN_CNT_CODE\r
            | EFI_IMAGE_SCN_MEM_EXECUTE\r
            | EFI_IMAGE_SCN_MEM_READ);\r
  } else {\r
    // Don't make a section of size 0.\r
    NtHdr->Pe32Plus.FileHeader.NumberOfSections--;\r
  }\r
\r
  if ((mHiiRsrcOffset - mDataOffset) > 0) {\r
    CreateSectionHeader (".data", mDataOffset, mHiiRsrcOffset - mDataOffset,\r
            EFI_IMAGE_SCN_CNT_INITIALIZED_DATA\r
            | EFI_IMAGE_SCN_MEM_WRITE\r
            | EFI_IMAGE_SCN_MEM_READ);\r
  } else {\r
    // Don't make a section of size 0.\r
    NtHdr->Pe32Plus.FileHeader.NumberOfSections--;\r
  }\r
\r
  if ((mRelocOffset - mHiiRsrcOffset) > 0) {\r
    CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset,\r
            EFI_IMAGE_SCN_CNT_INITIALIZED_DATA\r
            | EFI_IMAGE_SCN_MEM_READ);\r
\r
    NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset;\r
    NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset;\r
  } else {\r
    // Don't make a section of size 0.\r
    NtHdr->Pe32Plus.FileHeader.NumberOfSections--;\r
  }\r
\r
}\r
\r
STATIC\r
BOOLEAN\r
WriteSections64 (\r
  SECTION_FILTER_TYPES  FilterType\r
  )\r
{\r
  UINT32      Idx;\r
  Elf_Shdr    *SecShdr;\r
  UINT32      SecOffset;\r
  BOOLEAN     (*Filter)(Elf_Shdr *);\r
  Elf64_Addr  GOTEntryRva;\r
\r
  //\r
  // Initialize filter pointer\r
  //\r
  switch (FilterType) {\r
    case SECTION_TEXT:\r
      Filter = IsTextShdr;\r
      break;\r
    case SECTION_HII:\r
      Filter = IsHiiRsrcShdr;\r
      break;\r
    case SECTION_DATA:\r
      Filter = IsDataShdr;\r
      break;\r
    default:\r
      return FALSE;\r
  }\r
\r
  //\r
  // First: copy sections.\r
  //\r
  for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {\r
    Elf_Shdr *Shdr = GetShdrByIndex(Idx);\r
    if ((*Filter)(Shdr)) {\r
      switch (Shdr->sh_type) {\r
      case SHT_PROGBITS:\r
        /* Copy.  */\r
        if (Shdr->sh_offset + Shdr->sh_size > mFileBufferSize) {\r
          return FALSE;\r
        }\r
        memcpy(mCoffFile + mCoffSectionsOffset[Idx],\r
              (UINT8*)mEhdr + Shdr->sh_offset,\r
              (size_t) Shdr->sh_size);\r
        break;\r
\r
      case SHT_NOBITS:\r
        memset(mCoffFile + mCoffSectionsOffset[Idx], 0, (size_t) Shdr->sh_size);\r
        break;\r
\r
      default:\r
        //\r
        //  Ignore for unknown section type.\r
        //\r
        VerboseMsg ("%s unknown section type %x. We ignore this unknown section type.", mInImageName, (unsigned)Shdr->sh_type);\r
        break;\r
      }\r
    }\r
  }\r
\r
  //\r
  // Second: apply relocations.\r
  //\r
  VerboseMsg ("Applying Relocations...");\r
  for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {\r
    //\r
    // Determine if this is a relocation section.\r
    //\r
    Elf_Shdr *RelShdr = GetShdrByIndex(Idx);\r
    if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {\r
      continue;\r
    }\r
\r
    //\r
    // If this is a ET_DYN (PIE) executable, we will encounter a dynamic SHT_RELA\r
    // section that applies to the entire binary, and which will have its section\r
    // index set to #0 (which is a NULL section with the SHF_ALLOC bit cleared).\r
    //\r
    // In the absence of GOT based relocations,\r
    // this RELA section will contain redundant R_xxx_RELATIVE relocations, one\r
    // for every R_xxx_xx64 relocation appearing in the per-section RELA sections.\r
    // (i.e., .rela.text and .rela.data)\r
    //\r
    if (RelShdr->sh_info == 0) {\r
      continue;\r
    }\r
\r
    //\r
    // Relocation section found.  Now extract section information that the relocations\r
    // apply to in the ELF data and the new COFF data.\r
    //\r
    SecShdr = GetShdrByIndex(RelShdr->sh_info);\r
    SecOffset = mCoffSectionsOffset[RelShdr->sh_info];\r
\r
    //\r
    // Only process relocations for the current filter type.\r
    //\r
    if (RelShdr->sh_type == SHT_RELA && (*Filter)(SecShdr)) {\r
      UINT64 RelIdx;\r
\r
      //\r
      // Determine the symbol table referenced by the relocation data.\r
      //\r
      Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link);\r
      UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;\r
\r
      //\r
      // Process all relocation entries for this section.\r
      //\r
      for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += (UINT32) RelShdr->sh_entsize) {\r
\r
        //\r
        // Set pointer to relocation entry\r
        //\r
        Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);\r
\r
        //\r
        // Set pointer to symbol table entry associated with the relocation entry.\r
        //\r
        Elf_Sym  *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);\r
\r
        Elf_Shdr *SymShdr;\r
        UINT8    *Targ;\r
\r
        //\r
        // Check section header index found in symbol table and get the section\r
        // header location.\r
        //\r
        if (Sym->st_shndx == SHN_UNDEF\r
            || Sym->st_shndx >= mEhdr->e_shnum) {\r
          const UINT8 *SymName = GetSymName(Sym);\r
          if (SymName == NULL) {\r
            SymName = (const UINT8 *)"<unknown>";\r
          }\r
\r
          Error (NULL, 0, 3000, "Invalid",\r
                 "%s: Bad definition for symbol '%s'@%#llx or unsupported symbol type.  "\r
                 "For example, absolute and undefined symbols are not supported.",\r
                 mInImageName, SymName, Sym->st_value);\r
\r
          exit(EXIT_FAILURE);\r
        }\r
        SymShdr = GetShdrByIndex(Sym->st_shndx);\r
\r
        //\r
        // Convert the relocation data to a pointer into the coff file.\r
        //\r
        // Note:\r
        //   r_offset is the virtual address of the storage unit to be relocated.\r
        //   sh_addr is the virtual address for the base of the section.\r
        //\r
        //   r_offset in a memory address.\r
        //   Convert it to a pointer in the coff file.\r
        //\r
        Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr);\r
\r
        //\r
        // Determine how to handle each relocation type based on the machine type.\r
        //\r
        if (mEhdr->e_machine == EM_X86_64) {\r
          switch (ELF_R_TYPE(Rel->r_info)) {\r
          case R_X86_64_NONE:\r
            break;\r
          case R_X86_64_64:\r
            //\r
            // Absolute relocation.\r
            //\r
            VerboseMsg ("R_X86_64_64");\r
            VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX",\r
              (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),\r
              *(UINT64 *)Targ);\r
            *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];\r
            VerboseMsg ("Relocation:  0x%016LX", *(UINT64*)Targ);\r
            break;\r
          case R_X86_64_32:\r
            VerboseMsg ("R_X86_64_32");\r
            VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",\r
              (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),\r
              *(UINT32 *)Targ);\r
            *(UINT32 *)Targ = (UINT32)((UINT64)(*(UINT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);\r
            VerboseMsg ("Relocation:  0x%08X", *(UINT32*)Targ);\r
            break;\r
          case R_X86_64_32S:\r
            VerboseMsg ("R_X86_64_32S");\r
            VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",\r
              (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),\r
              *(UINT32 *)Targ);\r
            *(INT32 *)Targ = (INT32)((INT64)(*(INT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);\r
            VerboseMsg ("Relocation:  0x%08X", *(UINT32*)Targ);\r
            break;\r
\r
          case R_X86_64_PLT32:\r
            //\r
            // Treat R_X86_64_PLT32 relocations as R_X86_64_PC32: this is\r
            // possible since we know all code symbol references resolve to\r
            // definitions in the same module (UEFI has no shared libraries),\r
            // and so there is never a reason to jump via a PLT entry,\r
            // allowing us to resolve the reference using the symbol directly.\r
            //\r
            VerboseMsg ("Treating R_X86_64_PLT32 as R_X86_64_PC32 ...");\r
            /* fall through */\r
          case R_X86_64_PC32:\r
            //\r
            // Relative relocation: Symbol - Ip + Addend\r
            //\r
            VerboseMsg ("R_X86_64_PC32");\r
            VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",\r
              (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),\r
              *(UINT32 *)Targ);\r
            *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ\r
              + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr)\r
              - (SecOffset - SecShdr->sh_addr));\r
            VerboseMsg ("Relocation:  0x%08X", *(UINT32 *)Targ);\r
            break;\r
          case R_X86_64_GOTPCREL:\r
          case R_X86_64_GOTPCRELX:\r
          case R_X86_64_REX_GOTPCRELX:\r
            VerboseMsg ("R_X86_64_GOTPCREL family");\r
            VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",\r
              (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),\r
              *(UINT32 *)Targ);\r
            GOTEntryRva = Rel->r_offset - Rel->r_addend + *(INT32 *)Targ;\r
            FindElfGOTSectionFromGOTEntryElfRva(GOTEntryRva);\r
            *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ\r
              + (mCoffSectionsOffset[mGOTShindex] - mGOTShdr->sh_addr)\r
              - (SecOffset - SecShdr->sh_addr));\r
            VerboseMsg ("Relocation:  0x%08X", *(UINT32 *)Targ);\r
            GOTEntryRva += (mCoffSectionsOffset[mGOTShindex] - mGOTShdr->sh_addr);  // ELF Rva -> COFF Rva\r
            if (AccumulateCoffGOTEntries((UINT32)GOTEntryRva)) {\r
              //\r
              // Relocate GOT entry if it's the first time we run into it\r
              //\r
              Targ = mCoffFile + GOTEntryRva;\r
              //\r
              // Limitation: The following three statements assume memory\r
              //   at *Targ is valid because the section containing the GOT\r
              //   has already been copied from the ELF image to the Coff image.\r
              //   This pre-condition presently holds because the GOT is placed\r
              //   in section .text, and the ELF text sections are all copied\r
              //   prior to reaching this point.\r
              //   If the pre-condition is violated in the future, this fixup\r
              //   either needs to be deferred after the GOT section is copied\r
              //   to the Coff image, or the fixup should be performed on the\r
              //   source Elf image instead of the destination Coff image.\r
              //\r
              VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX",\r
                (UINT32)GOTEntryRva,\r
                *(UINT64 *)Targ);\r
              *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];\r
              VerboseMsg ("Relocation:  0x%016LX", *(UINT64*)Targ);\r
            }\r
            break;\r
          default:\r
            Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));\r
          }\r
        } else if (mEhdr->e_machine == EM_AARCH64) {\r
\r
          switch (ELF_R_TYPE(Rel->r_info)) {\r
            INT64 Offset;\r
\r
          case R_AARCH64_LD64_GOT_LO12_NC:\r
            //\r
            // Convert into an ADD instruction - see R_AARCH64_ADR_GOT_PAGE below.\r
            //\r
            *(UINT32 *)Targ &= 0x3ff;\r
            *(UINT32 *)Targ |= 0x91000000 | ((Sym->st_value & 0xfff) << 10);\r
            break;\r
\r
          case R_AARCH64_ADR_GOT_PAGE:\r
            //\r
            // This relocation points to the GOT entry that contains the absolute\r
            // address of the symbol we are referring to. Since EDK2 only uses\r
            // fully linked binaries, we can avoid the indirection, and simply\r
            // refer to the symbol directly. This implies having to patch the\r
            // subsequent LDR instruction (covered by a R_AARCH64_LD64_GOT_LO12_NC\r
            // relocation) into an ADD instruction - this is handled above.\r
            //\r
            Offset = (Sym->st_value - (Rel->r_offset & ~0xfff)) >> 12;\r
\r
            *(UINT32 *)Targ &= 0x9000001f;\r
            *(UINT32 *)Targ |= ((Offset & 0x1ffffc) << (5 - 2)) | ((Offset & 0x3) << 29);\r
\r
            /* fall through */\r
\r
          case R_AARCH64_ADR_PREL_PG_HI21:\r
            //\r
            // In order to handle Cortex-A53 erratum #843419, the LD linker may\r
            // convert ADRP instructions into ADR instructions, but without\r
            // updating the static relocation type, and so we may end up here\r
            // while the instruction in question is actually ADR. So let's\r
            // just disregard it: the section offset check we apply below to\r
            // ADR instructions will trigger for its R_AARCH64_xxx_ABS_LO12_NC\r
            // companion instruction as well, so it is safe to omit it here.\r
            //\r
            if ((*(UINT32 *)Targ & BIT31) == 0) {\r
              break;\r
            }\r
\r
            //\r
            // AArch64 PG_H21 relocations are typically paired with ABS_LO12\r
            // relocations, where a PC-relative reference with +/- 4 GB range is\r
            // split into a relative high part and an absolute low part. Since\r
            // the absolute low part represents the offset into a 4 KB page, we\r
            // either have to convert the ADRP into an ADR instruction, or we\r
            // need to use a section alignment of at least 4 KB, so that the\r
            // binary appears at a correct offset at runtime. In any case, we\r
            // have to make sure that the 4 KB relative offsets of both the\r
            // section containing the reference as well as the section to which\r
            // it refers have not been changed during PE/COFF conversion (i.e.,\r
            // in ScanSections64() above).\r
            //\r
            if (mCoffAlignment < 0x1000) {\r
              //\r
              // Attempt to convert the ADRP into an ADR instruction.\r
              // This is only possible if the symbol is within +/- 1 MB.\r
              //\r
\r
              // Decode the ADRP instruction\r
              Offset = (INT32)((*(UINT32 *)Targ & 0xffffe0) << 8);\r
              Offset = (Offset << (6 - 5)) | ((*(UINT32 *)Targ & 0x60000000) >> (29 - 12));\r
\r
              //\r
              // ADRP offset is relative to the previous page boundary,\r
              // whereas ADR offset is relative to the instruction itself.\r
              // So fix up the offset so it points to the page containing\r
              // the symbol.\r
              //\r
              Offset -= (UINTN)(Targ - mCoffFile) & 0xfff;\r
\r
              if (Offset < -0x100000 || Offset > 0xfffff) {\r
                Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s  due to its size (> 1 MB), this module requires 4 KB section alignment.",\r
                  mInImageName);\r
                break;\r
              }\r
\r
              // Re-encode the offset as an ADR instruction\r
              *(UINT32 *)Targ &= 0x1000001f;\r
              *(UINT32 *)Targ |= ((Offset & 0x1ffffc) << (5 - 2)) | ((Offset & 0x3) << 29);\r
            }\r
            /* fall through */\r
\r
          case R_AARCH64_ADD_ABS_LO12_NC:\r
          case R_AARCH64_LDST8_ABS_LO12_NC:\r
          case R_AARCH64_LDST16_ABS_LO12_NC:\r
          case R_AARCH64_LDST32_ABS_LO12_NC:\r
          case R_AARCH64_LDST64_ABS_LO12_NC:\r
          case R_AARCH64_LDST128_ABS_LO12_NC:\r
            if (((SecShdr->sh_addr ^ SecOffset) & 0xfff) != 0 ||\r
                ((SymShdr->sh_addr ^ mCoffSectionsOffset[Sym->st_shndx]) & 0xfff) != 0) {\r
              Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s AARCH64 small code model requires identical ELF and PE/COFF section offsets modulo 4 KB.",\r
                mInImageName);\r
              break;\r
            }\r
            /* fall through */\r
\r
          case R_AARCH64_ADR_PREL_LO21:\r
          case R_AARCH64_CONDBR19:\r
          case R_AARCH64_LD_PREL_LO19:\r
          case R_AARCH64_CALL26:\r
          case R_AARCH64_JUMP26:\r
          case R_AARCH64_PREL64:\r
          case R_AARCH64_PREL32:\r
          case R_AARCH64_PREL16:\r
            //\r
            // The GCC toolchains (i.e., binutils) may corrupt section relative\r
            // relocations when emitting relocation sections into fully linked\r
            // binaries. More specifically, they tend to fail to take into\r
            // account the fact that a '.rodata + XXX' relocation needs to have\r
            // its addend recalculated once .rodata is merged into the .text\r
            // section, and the relocation emitted into the .rela.text section.\r
            //\r
            // We cannot really recover from this loss of information, so the\r
            // only workaround is to prevent having to recalculate any relative\r
            // relocations at all, by using a linker script that ensures that\r
            // the offset between the Place and the Symbol is the same in both\r
            // the ELF and the PE/COFF versions of the binary.\r
            //\r
            if ((SymShdr->sh_addr - SecShdr->sh_addr) !=\r
                (mCoffSectionsOffset[Sym->st_shndx] - SecOffset)) {\r
              Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s AARCH64 relative relocations require identical ELF and PE/COFF section offsets",\r
                mInImageName);\r
            }\r
            break;\r
\r
          // Absolute relocations.\r
          case R_AARCH64_ABS64:\r
            *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];\r
            break;\r
\r
          default:\r
            Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s unsupported ELF EM_AARCH64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));\r
          }\r
        } else {\r
          Error (NULL, 0, 3000, "Invalid", "Not a supported machine type");\r
        }\r
      }\r
    }\r
  }\r
\r
  return TRUE;\r
}\r
\r
STATIC\r
VOID\r
WriteRelocations64 (\r
  VOID\r
  )\r
{\r
  UINT32                           Index;\r
  EFI_IMAGE_OPTIONAL_HEADER_UNION  *NtHdr;\r
  EFI_IMAGE_DATA_DIRECTORY         *Dir;\r
\r
  for (Index = 0; Index < mEhdr->e_shnum; Index++) {\r
    Elf_Shdr *RelShdr = GetShdrByIndex(Index);\r
    if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) {\r
      Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info);\r
      if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) {\r
        UINT64 RelIdx;\r
\r
        for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) {\r
          Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);\r
\r
          if (mEhdr->e_machine == EM_X86_64) {\r
            switch (ELF_R_TYPE(Rel->r_info)) {\r
            case R_X86_64_NONE:\r
            case R_X86_64_PC32:\r
            case R_X86_64_PLT32:\r
            case R_X86_64_GOTPCREL:\r
            case R_X86_64_GOTPCRELX:\r
            case R_X86_64_REX_GOTPCRELX:\r
              break;\r
            case R_X86_64_64:\r
              VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08X",\r
                mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr));\r
              CoffAddFixup(\r
                (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]\r
                + (Rel->r_offset - SecShdr->sh_addr)),\r
                EFI_IMAGE_REL_BASED_DIR64);\r
              break;\r
            //\r
            // R_X86_64_32 and R_X86_64_32S are ELF64 relocations emitted when using\r
            //   the SYSV X64 ABI small non-position-independent code model.\r
            //   R_X86_64_32 is used for unsigned 32-bit immediates with a 32-bit operand\r
            //   size.  The value is either not extended, or zero-extended to 64 bits.\r
            //   R_X86_64_32S is used for either signed 32-bit non-rip-relative displacements\r
            //   or signed 32-bit immediates with a 64-bit operand size.  The value is\r
            //   sign-extended to 64 bits.\r
            //   EFI_IMAGE_REL_BASED_HIGHLOW is a PE relocation that uses 32-bit arithmetic\r
            //   for rebasing an image.\r
            //   EFI PE binaries declare themselves EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE and\r
            //   may load above 2GB.  If an EFI PE binary with a converted R_X86_64_32S\r
            //   relocation is loaded above 2GB, the value will get sign-extended to the\r
            //   negative part of the 64-bit address space.  The negative part of the 64-bit\r
            //   address space is unmapped, so accessing such an address page-faults.\r
            //   In order to support R_X86_64_32S, it is necessary to unset\r
            //   EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE, and the EFI PE loader must implement\r
            //   this flag and abstain from loading such a PE binary above 2GB.\r
            //   Since this feature is not supported, support for R_X86_64_32S (and hence\r
            //   the small non-position-independent code model) is disabled.\r
            //\r
            // case R_X86_64_32S:\r
            case R_X86_64_32:\r
              VerboseMsg ("EFI_IMAGE_REL_BASED_HIGHLOW Offset: 0x%08X",\r
                mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr));\r
              CoffAddFixup(\r
                (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]\r
                + (Rel->r_offset - SecShdr->sh_addr)),\r
                EFI_IMAGE_REL_BASED_HIGHLOW);\r
              break;\r
            default:\r
              Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));\r
            }\r
          } else if (mEhdr->e_machine == EM_AARCH64) {\r
\r
            switch (ELF_R_TYPE(Rel->r_info)) {\r
            case R_AARCH64_ADR_PREL_LO21:\r
            case R_AARCH64_CONDBR19:\r
            case R_AARCH64_LD_PREL_LO19:\r
            case R_AARCH64_CALL26:\r
            case R_AARCH64_JUMP26:\r
            case R_AARCH64_PREL64:\r
            case R_AARCH64_PREL32:\r
            case R_AARCH64_PREL16:\r
            case R_AARCH64_ADR_PREL_PG_HI21:\r
            case R_AARCH64_ADD_ABS_LO12_NC:\r
            case R_AARCH64_LDST8_ABS_LO12_NC:\r
            case R_AARCH64_LDST16_ABS_LO12_NC:\r
            case R_AARCH64_LDST32_ABS_LO12_NC:\r
            case R_AARCH64_LDST64_ABS_LO12_NC:\r
            case R_AARCH64_LDST128_ABS_LO12_NC:\r
            case R_AARCH64_ADR_GOT_PAGE:\r
            case R_AARCH64_LD64_GOT_LO12_NC:\r
              //\r
              // No fixups are required for relative relocations, provided that\r
              // the relative offsets between sections have been preserved in\r
              // the ELF to PE/COFF conversion. We have already asserted that\r
              // this is the case in WriteSections64 ().\r
              //\r
              break;\r
\r
            case R_AARCH64_ABS64:\r
              CoffAddFixup(\r
                (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]\r
                + (Rel->r_offset - SecShdr->sh_addr)),\r
                EFI_IMAGE_REL_BASED_DIR64);\r
              break;\r
\r
            case R_AARCH64_ABS32:\r
              CoffAddFixup(\r
                (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]\r
                + (Rel->r_offset - SecShdr->sh_addr)),\r
                EFI_IMAGE_REL_BASED_HIGHLOW);\r
             break;\r
\r
            default:\r
                Error (NULL, 0, 3000, "Invalid", "WriteRelocations64(): %s unsupported ELF EM_AARCH64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));\r
            }\r
          } else {\r
            Error (NULL, 0, 3000, "Not Supported", "This tool does not support relocations for ELF with e_machine %u (processor type).", (unsigned) mEhdr->e_machine);\r
          }\r
        }\r
        if (mEhdr->e_machine == EM_X86_64 && RelShdr->sh_info == mGOTShindex) {\r
          //\r
          // Tack relocations for GOT entries after other relocations for\r
          //   the section the GOT is in, as it's usually found at the end\r
          //   of the section.  This is done in order to maintain Rva order\r
          //   of Coff relocations.\r
          //\r
          EmitGOTRelocations();\r
        }\r
      }\r
    }\r
  }\r
\r
  if (mEhdr->e_machine == EM_X86_64) {\r
    //\r
    // This is a safety net just in case the GOT is in a section\r
    //   with no other relocations and the first invocation of\r
    //   EmitGOTRelocations() above was skipped.  This invocation\r
    //   does not maintain Rva order of Coff relocations.\r
    //   At present, with a single text section, all references to\r
    //   the GOT and the GOT itself reside in section .text, so\r
    //   if there's a GOT at all, the first invocation above\r
    //   is executed.\r
    //\r
    EmitGOTRelocations();\r
  }\r
  //\r
  // Pad by adding empty entries.\r
  //\r
  while (mCoffOffset & (mCoffAlignment - 1)) {\r
    CoffAddFixupEntry(0);\r
  }\r
\r
  NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);\r
  Dir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];\r
  Dir->Size = mCoffOffset - mRelocOffset;\r
  if (Dir->Size == 0) {\r
    // If no relocations, null out the directory entry and don't add the .reloc section\r
    Dir->VirtualAddress = 0;\r
    NtHdr->Pe32Plus.FileHeader.NumberOfSections--;\r
  } else {\r
    Dir->VirtualAddress = mRelocOffset;\r
    CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset,\r
            EFI_IMAGE_SCN_CNT_INITIALIZED_DATA\r
            | EFI_IMAGE_SCN_MEM_DISCARDABLE\r
            | EFI_IMAGE_SCN_MEM_READ);\r
  }\r
}\r
\r
STATIC\r
VOID\r
WriteDebug64 (\r
  VOID\r
  )\r
{\r
  UINT32                              Len;\r
  EFI_IMAGE_OPTIONAL_HEADER_UNION     *NtHdr;\r
  EFI_IMAGE_DATA_DIRECTORY            *DataDir;\r
  EFI_IMAGE_DEBUG_DIRECTORY_ENTRY     *Dir;\r
  EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10;\r
\r
  Len = strlen(mInImageName) + 1;\r
\r
  Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + mDebugOffset);\r
  Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW;\r
  Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len;\r
  Dir->RVA = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r
  Dir->FileOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r
\r
  Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1);\r
  Nb10->Signature = CODEVIEW_SIGNATURE_NB10;\r
  strcpy ((char *)(Nb10 + 1), mInImageName);\r
\r
\r
  NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);\r
  DataDir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG];\r
  DataDir->VirtualAddress = mDebugOffset;\r
  DataDir->Size = sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r
}\r
\r
STATIC\r
VOID\r
SetImageSize64 (\r
  VOID\r
  )\r
{\r
  EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r
\r
  //\r
  // Set image size\r
  //\r
  NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);\r
  NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = mCoffOffset;\r
}\r
\r
STATIC\r
VOID\r
CleanUp64 (\r
  VOID\r
  )\r
{\r
  if (mCoffSectionsOffset != NULL) {\r
    free (mCoffSectionsOffset);\r
  }\r
}\r
\r
\r