ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandlerUefi.c

   1 /** @file
   2
   3   Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include <Uefi.h>
  10 #include <Library/PeCoffGetEntryPointLib.h>
  11 #include <Library/UefiLib.h>
  12
  13 #include <Guid/DebugImageInfoTable.h>
  14
  15 /**
  16   Use the EFI Debug Image Table to lookup the FaultAddress and find which PE/COFF image
  17   it came from. As long as the PE/COFF image contains a debug directory entry a
  18   string can be returned. For ELF and Mach-O images the string points to the Mach-O or ELF
  19   image. Microsoft tools contain a pointer to the PDB file that contains the debug information.
  20
  21   @param  FaultAddress         Address to find PE/COFF image for.
  22   @param  ImageBase            Return load address of found image
  23   @param  PeCoffSizeOfHeaders  Return the size of the PE/COFF header for the image that was found
  24
  25   @retval NULL                 FaultAddress not in a loaded PE/COFF image.
  26   @retval                      Path and file name of PE/COFF image.
  27
  28 **/
  29 CHAR8 *
  30 GetImageName (
  31   IN  UINTN  FaultAddress,
  32   OUT UINTN  *ImageBase,
  33   OUT UINTN  *PeCoffSizeOfHeaders
  34   )
  35 {
  36   EFI_STATUS                         Status;
  37   EFI_DEBUG_IMAGE_INFO_TABLE_HEADER  *DebugTableHeader;
  38   EFI_DEBUG_IMAGE_INFO               *DebugTable;
  39   UINTN                              Entry;
  40   CHAR8                              *Address;
  41
  42   Status = EfiGetSystemConfigurationTable (&gEfiDebugImageInfoTableGuid, (VOID **)&DebugTableHeader);
  43   if (EFI_ERROR (Status)) {
  44     return NULL;
  45   }
  46
  47   DebugTable = DebugTableHeader->EfiDebugImageInfoTable;
  48   if (DebugTable == NULL) {
  49     return NULL;
  50   }
  51
  52   Address = (CHAR8 *)(UINTN)FaultAddress;
  53   for (Entry = 0; Entry < DebugTableHeader->TableSize; Entry++, DebugTable++) {
  54     if (DebugTable->NormalImage != NULL) {
  55       if ((DebugTable->NormalImage->ImageInfoType == EFI_DEBUG_IMAGE_INFO_TYPE_NORMAL) &&
  56           (DebugTable->NormalImage->LoadedImageProtocolInstance != NULL))
  57       {
  58         if ((Address >= (CHAR8 *)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase) &&
  59             (Address <= ((CHAR8 *)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase + DebugTable->NormalImage->LoadedImageProtocolInstance->ImageSize)))
  60         {
  61           *ImageBase           = (UINTN)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase;
  62           *PeCoffSizeOfHeaders = PeCoffGetSizeOfHeaders ((VOID *)(UINTN)*ImageBase);
  63           return PeCoffLoaderGetPdbPointer (DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase);
  64         }
  65       }
  66     }
  67   }
  68
  69   return NULL;
  70 }