MdeModulePkg/Core/DxeIplPeim/Ipf/ImageRead.c

   1 /** @file
   2   This module loads an image to memory for IPF Cpu architecture.
   3
   4 Copyright (c) 2006 - 2008, 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 "DxeIpl.h"
  16
  17 EFI_STATUS
  18 PeiImageRead (
  19   IN     VOID    *FileHandle,
  20   IN     UINTN   FileOffset,
  21   IN OUT UINTN   *ReadSize,
  22   OUT    VOID    *Buffer
  23   )
  24 /*++
  25
  26 Routine Description:
  27
  28   Support routine for the PE/COFF Loader that reads a buffer from a PE/COFF file
  29
  30 Arguments:
  31
  32   FileHandle - The handle to the PE/COFF file
  33
  34   FileOffset - The offset, in bytes, into the file to read
  35
  36   ReadSize   - The number of bytes to read from the file starting at FileOffset
  37
  38   Buffer     - A pointer to the buffer to read the data into.
  39
  40 Returns:
  41
  42   EFI_SUCCESS - ReadSize bytes of data were read into Buffer from the PE/COFF file starting at FileOffset
  43
  44 --*/
  45 {
  46   CHAR8 *Destination8;
  47   CHAR8 *Source8;
  48   volatile UINTN Length;
  49
  50   Destination8  = Buffer;
  51   Source8       = (CHAR8 *) ((UINTN) FileHandle + FileOffset);
  52   Length        = *ReadSize;
  53   CopyMem (Destination8, Source8, Length);
  54
  55   return EFI_SUCCESS;
  56 }
  57
  58 EFI_STATUS
  59 GetImageReadFunction (
  60   IN      PE_COFF_LOADER_IMAGE_CONTEXT  *ImageContext
  61   )
  62 {
  63   ImageContext->ImageRead = PeiImageRead;
  64   return EFI_SUCCESS;
  65 }