MdePkg/Library/BasePeCoffLib/x64/PeCoffLoaderEx.c

   1 /** @file
   2   x64 Specific relocation fixups.
   3
   4   Copyright (c) 2006, Intel Corporation
   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   Module Name:  PeCoffLoaderEx.c
  14
  15 **/
  16
  17 /**
  18   Performs an x64 specific relocation fixup.
  19
  20   @param  Reloc       Pointer to the relocation record
  21   @param  Fixup       Pointer to the address to fix up
  22   @param  FixupData   Pointer to a buffer to log the fixups
  23   @param  Adjust      The offset to adjust the fixup
  24
  25 **/
  26 RETURN_STATUS
  27 PeCoffLoaderRelocateImageEx (
  28   IN UINT16      *Reloc,
  29   IN OUT CHAR8   *Fixup,
  30   IN OUT CHAR8   **FixupData,
  31   IN UINT64      Adjust
  32   )
  33 {
  34   UINT64      *F64;
  35
  36   switch ((*Reloc) >> 12) {
  37
  38     case EFI_IMAGE_REL_BASED_DIR64:
  39       F64 = (UINT64 *) Fixup;
  40       *F64 = *F64 + (UINT64) Adjust;
  41       if (*FixupData != NULL) {
  42         *FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64));
  43         *(UINT64 *)(*FixupData) = *F64;
  44         *FixupData = *FixupData + sizeof(UINT64);
  45       }
  46       break;
  47
  48     default:
  49       return RETURN_UNSUPPORTED;
  50   }
  51
  52   return RETURN_SUCCESS;
  53 }