Tools/CCode/Source/PeCoffLoader/X64/PeCoffLoaderEx.c

   1 /**@file
   2   x64 Specific relocation fixups.
   3
   4 Copyright (c) 2005 - 2006 Intel Corporation. <BR>
   5 All rights reserved. This program and the accompanying materials
   6 are licensed and made available under the terms and conditions of the BSD License
   7 which accompanies this distribution.  The full text of the license may be found at
   8 http://opensource.org/licenses/bsd-license.php
   9
  10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include <Common/UefiBaseTypes.h>
  16 #include <Common/EfiImage.h>
  17 #include <Library/PeCoffLib.h>
  18
  19 /**
  20   Performs an x64 specific relocation fixup
  21
  22   @param Reloc        Pointer to the relocation record
  23   @param Fixup        Pointer to the address to fix up
  24   @param FixupData    Pointer to a buffer to log the fixups
  25   @param Adjust       The offset to adjust the fixup
  26
  27   @retval RETURN_SUCCESS      Success to perform relocation
  28   @retval RETURN_UNSUPPORTED  Unsupported.
  29 **/
  30 RETURN_STATUS
  31 PeCoffLoaderRelocateImageEx (
  32   IN     UINT16       *Reloc,
  33   IN OUT CHAR8        *Fixup,
  34   IN OUT CHAR8        **FixupData,
  35   IN     UINT64       Adjust
  36   )
  37 {
  38   UINT64      *F64;
  39
  40   switch ((*Reloc) >> 12) {
  41
  42     case EFI_IMAGE_REL_BASED_DIR64:
  43       F64 = (UINT64 *) Fixup;
  44       *F64 = *F64 + (UINT64) Adjust;
  45       if (*FixupData != NULL) {
  46         *FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64));
  47         *(UINT64 *)(*FixupData) = *F64;
  48         *FixupData = *FixupData + sizeof(UINT64);
  49       }
  50       break;
  51
  52     default:
  53       return RETURN_UNSUPPORTED;
  54   }
  55
  56   return RETURN_SUCCESS;
  57 }