ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandlerUefi.c

   1 /** @file
   2
   3   Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4
   5   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 <Uefi.h>
  16 #include <Library/PeCoffGetEntryPointLib.h>
  17 #include <Library/UefiLib.h>
  18
  19 #include <Guid/DebugImageInfoTable.h>
  20
  21 /**
  22   Use the EFI Debug Image Table to lookup the FaultAddress and find which PE/COFF image
  23   it came from. As long as the PE/COFF image contains a debug directory entry a
  24   string can be returned. For ELF and Mach-O images the string points to the Mach-O or ELF
  25   image. Microsoft tools contain a pointer to the PDB file that contains the debug information.
  26
  27   @param  FaultAddress         Address to find PE/COFF image for.
  28   @param  ImageBase            Return load address of found image
  29   @param  PeCoffSizeOfHeaders  Return the size of the PE/COFF header for the image that was found
  30
  31   @retval NULL                 FaultAddress not in a loaded PE/COFF image.
  32   @retval                      Path and file name of PE/COFF image.
  33
  34 **/
  35 CHAR8 *
  36 GetImageName (
  37   IN  UINTN  FaultAddress,
  38   OUT UINTN  *ImageBase,
  39   OUT UINTN  *PeCoffSizeOfHeaders
  40   )
  41 {
  42   EFI_STATUS                          Status;
  43   EFI_DEBUG_IMAGE_INFO_TABLE_HEADER   *DebugTableHeader;
  44   EFI_DEBUG_IMAGE_INFO                *DebugTable;
  45   UINTN                               Entry;
  46   CHAR8                               *Address;
  47
  48   Status = EfiGetSystemConfigurationTable (&gEfiDebugImageInfoTableGuid, (VOID **)&DebugTableHeader);
  49   if (EFI_ERROR (Status)) {
  50     return NULL;
  51   }
  52
  53   DebugTable = DebugTableHeader->EfiDebugImageInfoTable;
  54   if (DebugTable == NULL) {
  55     return NULL;
  56   }
  57
  58   Address = (CHAR8 *)(UINTN)FaultAddress;
  59   for (Entry = 0; Entry < DebugTableHeader->TableSize; Entry++, DebugTable++) {
  60     if (DebugTable->NormalImage != NULL) {
  61       if ((DebugTable->NormalImage->ImageInfoType == EFI_DEBUG_IMAGE_INFO_TYPE_NORMAL) &&
  62           (DebugTable->NormalImage->LoadedImageProtocolInstance != NULL)) {
  63         if ((Address >= (CHAR8 *)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase) &&
  64             (Address <= ((CHAR8 *)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase + DebugTable->NormalImage->LoadedImageProtocolInstance->ImageSize))) {
  65           *ImageBase = (UINTN)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase;
  66           *PeCoffSizeOfHeaders = PeCoffGetSizeOfHeaders ((VOID *)(UINTN)*ImageBase);
  67           return PeCoffLoaderGetPdbPointer (DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase);
  68         }
  69       }
  70     }
  71   }
  72
  73   return NULL;
  74 }
  75