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ArmPkg: DefaultExceptionHandler fixes for use with DxeCore

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Modify the DefaultExceptionHandler (uefi-variant) so it can be used by
DxeCore (via CpuExceptionHandlerLib) where the debug info table is not
yet published at library constructor time.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eugene Cohen <eugene@hp.com>
Tested-by: Ryan Harkin <ryan.harkin@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This commit is contained in:
Cohen, Eugene
2016-02-10 23:05:18 +00:00
committed by Ard Biesheuvel
parent 0b6249f590
commit 82ea9a6b59
4 changed files with 12 additions and 38 deletions
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45
ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandlerUefi.c
View File

@@ -18,34 +18,6 @@
#include <Guid/DebugImageInfoTable.h>
extern EFI_DEBUG_IMAGE_INFO_TABLE_HEADER *gDebugImageTableHeader;
/**
The constructor function caches EFI Debug table information for use in the exception handler.
@param ImageHandle The firmware allocated handle for the EFI image.
@param SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
**/
EFI_STATUS
EFIAPI
DefaultExceptionHandlerConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
Status = EfiGetSystemConfigurationTable (&gEfiDebugImageInfoTableGuid, (VOID **)&gDebugImageTableHeader);
if (EFI_ERROR (Status)) {
gDebugImageTableHeader = NULL;
}
return Status;
}
/**
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
@@ -67,17 +39,24 @@ GetImageName (
OUT UINTN *PeCoffSizeOfHeaders
)
{
EFI_DEBUG_IMAGE_INFO *DebugTable;
UINTN Entry;
CHAR8 *Address;
EFI_STATUS Status;
EFI_DEBUG_IMAGE_INFO_TABLE_HEADER *DebugTableHeader;
EFI_DEBUG_IMAGE_INFO *DebugTable;
UINTN Entry;
CHAR8 *Address;
DebugTable = gDebugImageTableHeader->EfiDebugImageInfoTable;
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 < gDebugImageTableHeader->TableSize; Entry++, DebugTable++) {
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)) {