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/** @file
RISC-V backtrace helper functions.
Copyright (c) 2016 - 2022, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2025, Ventana Micro Systems Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "Backtrace.h"
/**
Use the EFI Debug Image Table to lookup the FaultAddress and find which PE/COFF image
it came from. As long as the PE/COFF image contains a debug directory entry a
string can be returned. For ELF and Mach-O images the string points to the Mach-O or ELF
image. Microsoft tools contain a pointer to the PDB file that contains the debug information.
@param FaultAddress Address to find PE/COFF image for.
@param ImageBase Return load address of found image
@param PeCoffSizeOfHeaders Return the size of the PE/COFF header for the image that was found
@retval NULL FaultAddress not in a loaded PE/COFF image.
@retval Path and file name of PE/COFF image.
**/
CHAR8 *
EFIAPI
GetImageName (
IN UINTN FaultAddress,
OUT UINTN *ImageBase,
OUT UINTN *PeCoffSizeOfHeaders
)
{
EFI_STATUS Status;
EFI_DEBUG_IMAGE_INFO_TABLE_HEADER *DebugTableHeader;
EFI_DEBUG_IMAGE_INFO *DebugTable;
UINTN Entry;
CHAR8 *Address;
Status = EfiGetSystemConfigurationTable (&gEfiDebugImageInfoTableGuid, (VOID **)&DebugTableHeader);
if (EFI_ERROR (Status)) {
return NULL;
}
DebugTable = DebugTableHeader->EfiDebugImageInfoTable;
if (DebugTable == NULL) {
return NULL;
}
Address = (CHAR8 *)(UINTN)FaultAddress;
for (Entry = 0; Entry < DebugTableHeader->TableSize; Entry++, DebugTable++) {
if (DebugTable->NormalImage != NULL) {
if ((DebugTable->NormalImage->ImageInfoType == EFI_DEBUG_IMAGE_INFO_TYPE_NORMAL) &&
(DebugTable->NormalImage->LoadedImageProtocolInstance != NULL))
{
if ((Address >= (CHAR8 *)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase) &&
(Address <= ((CHAR8 *)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase + DebugTable->NormalImage->LoadedImageProtocolInstance->ImageSize)))
{
*ImageBase = (UINTN)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase;
*PeCoffSizeOfHeaders = PeCoffGetSizeOfHeaders ((VOID *)(UINTN)*ImageBase);
return PeCoffLoaderGetPdbPointer (DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase);
}
}
}
}
return NULL;
}
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