diff options
| -rw-r--r-- | MdePkg/Library/BasePeCoffLib/BasePeCoff.c | 165 |
1 files changed, 95 insertions, 70 deletions
diff --git a/MdePkg/Library/BasePeCoffLib/BasePeCoff.c b/MdePkg/Library/BasePeCoffLib/BasePeCoff.c index c57816a808..d9c94b89bd 100644 --- a/MdePkg/Library/BasePeCoffLib/BasePeCoff.c +++ b/MdePkg/Library/BasePeCoffLib/BasePeCoff.c @@ -15,7 +15,7 @@ PeCoffLoaderGetPeHeader() routine will do basic check for PE/COFF header.
PeCoffLoaderGetImageInfo() routine will do basic check for whole PE/COFF image.
- Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@@ -1671,6 +1671,7 @@ PeCoffLoaderRelocateImageForRuntime ( EFI_IMAGE_DATA_DIRECTORY *RelocDir;
EFI_IMAGE_BASE_RELOCATION *RelocBase;
EFI_IMAGE_BASE_RELOCATION *RelocBaseEnd;
+ EFI_IMAGE_BASE_RELOCATION *RelocBaseOrig;
UINT16 *Reloc;
UINT16 *RelocEnd;
CHAR8 *Fixup;
@@ -1681,11 +1682,19 @@ PeCoffLoaderRelocateImageForRuntime ( CHAR8 *FixupData;
UINTN Adjust;
RETURN_STATUS Status;
+ PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;
+
+ if (RelocationData == NULL || ImageBase == 0x0 || VirtImageBase == 0x0) {
+ return;
+ }
OldBase = (CHAR8 *)((UINTN)ImageBase);
NewBase = (CHAR8 *)((UINTN)VirtImageBase);
Adjust = (UINTN) NewBase - (UINTN) OldBase;
+ ImageContext.ImageAddress = ImageBase;
+ ImageContext.ImageSize = ImageSize;
+
//
// Find the image's relocate dir info
//
@@ -1732,8 +1741,11 @@ PeCoffLoaderRelocateImageForRuntime ( //
if (NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC) {
RelocDir = DataDirectory + EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC;
- RelocBase = (EFI_IMAGE_BASE_RELOCATION *)(UINTN)(ImageBase + RelocDir->VirtualAddress);
- RelocBaseEnd = (EFI_IMAGE_BASE_RELOCATION *)(UINTN)(ImageBase + RelocDir->VirtualAddress + RelocDir->Size);
+ RelocBase = (EFI_IMAGE_BASE_RELOCATION *) PeCoffLoaderImageAddress (&ImageContext, RelocDir->VirtualAddress, 0);
+ RelocBaseEnd = (EFI_IMAGE_BASE_RELOCATION *) PeCoffLoaderImageAddress (&ImageContext,
+ RelocDir->VirtualAddress + RelocDir->Size,
+ 0
+ );
} else {
//
// Cannot find relocations, cannot continue to relocate the image, ASSERT for this invalid image.
@@ -1747,96 +1759,109 @@ PeCoffLoaderRelocateImageForRuntime ( //
ASSERT (RelocBase != NULL && RelocBaseEnd != NULL);
- //
- // Run the whole relocation block. And re-fixup data that has not been
- // modified. The FixupData is used to see if the image has been modified
- // since it was relocated. This is so data sections that have been updated
- // by code will not be fixed up, since that would set them back to
- // defaults.
- //
- FixupData = RelocationData;
- while (RelocBase < RelocBaseEnd) {
+ if (Adjust != 0) {
//
- // Add check for RelocBase->SizeOfBlock field.
+ // Run the whole relocation block. And re-fixup data that has not been
+ // modified. The FixupData is used to see if the image has been modified
+ // since it was relocated. This is so data sections that have been updated
+ // by code will not be fixed up, since that would set them back to
+ // defaults.
//
- if ((RelocBase->SizeOfBlock == 0) || (RelocBase->SizeOfBlock > RelocDir->Size)) {
+ FixupData = RelocationData;
+ RelocBaseOrig = RelocBase;
+ while (RelocBase < RelocBaseEnd) {
//
- // Data invalid, cannot continue to relocate the image, just return.
+ // Add check for RelocBase->SizeOfBlock field.
//
- return;
- }
-
- Reloc = (UINT16 *) ((UINT8 *) RelocBase + sizeof (EFI_IMAGE_BASE_RELOCATION));
- RelocEnd = (UINT16 *) ((UINT8 *) RelocBase + RelocBase->SizeOfBlock);
- FixupBase = (CHAR8 *) ((UINTN)ImageBase) + RelocBase->VirtualAddress;
+ if ((RelocBase->SizeOfBlock == 0) || (RelocBase->SizeOfBlock > RelocDir->Size)) {
+ //
+ // Data invalid, cannot continue to relocate the image, just return.
+ //
+ return;
+ }
- //
- // Run this relocation record
- //
- while (Reloc < RelocEnd) {
+ Reloc = (UINT16 *) ((UINT8 *) RelocBase + sizeof (EFI_IMAGE_BASE_RELOCATION));
+ RelocEnd = (UINT16 *) ((UINT8 *) RelocBase + RelocBase->SizeOfBlock);
+ if ((UINTN)RelocEnd > (UINTN)RelocBaseOrig + RelocDir->Size) {
+ return;
+ }
- Fixup = FixupBase + (*Reloc & 0xFFF);
- switch ((*Reloc) >> 12) {
+ FixupBase = PeCoffLoaderImageAddress (&ImageContext, RelocBase->VirtualAddress, 0);
+ if (FixupBase == NULL) {
+ return;
+ }
- case EFI_IMAGE_REL_BASED_ABSOLUTE:
- break;
+ //
+ // Run this relocation record
+ //
+ while (Reloc < RelocEnd) {
- case EFI_IMAGE_REL_BASED_HIGH:
- Fixup16 = (UINT16 *) Fixup;
- if (*(UINT16 *) FixupData == *Fixup16) {
- *Fixup16 = (UINT16) (*Fixup16 + ((UINT16) ((UINT32) Adjust >> 16)));
+ Fixup = PeCoffLoaderImageAddress (&ImageContext, RelocBase->VirtualAddress + (*Reloc & 0xFFF), 0);
+ if (Fixup == NULL) {
+ return;
}
+ switch ((*Reloc) >> 12) {
- FixupData = FixupData + sizeof (UINT16);
- break;
+ case EFI_IMAGE_REL_BASED_ABSOLUTE:
+ break;
- case EFI_IMAGE_REL_BASED_LOW:
- Fixup16 = (UINT16 *) Fixup;
- if (*(UINT16 *) FixupData == *Fixup16) {
- *Fixup16 = (UINT16) (*Fixup16 + ((UINT16) Adjust & 0xffff));
- }
+ case EFI_IMAGE_REL_BASED_HIGH:
+ Fixup16 = (UINT16 *) Fixup;
+ if (*(UINT16 *) FixupData == *Fixup16) {
+ *Fixup16 = (UINT16) (*Fixup16 + ((UINT16) ((UINT32) Adjust >> 16)));
+ }
- FixupData = FixupData + sizeof (UINT16);
- break;
+ FixupData = FixupData + sizeof (UINT16);
+ break;
- case EFI_IMAGE_REL_BASED_HIGHLOW:
- Fixup32 = (UINT32 *) Fixup;
- FixupData = ALIGN_POINTER (FixupData, sizeof (UINT32));
- if (*(UINT32 *) FixupData == *Fixup32) {
- *Fixup32 = *Fixup32 + (UINT32) Adjust;
- }
+ case EFI_IMAGE_REL_BASED_LOW:
+ Fixup16 = (UINT16 *) Fixup;
+ if (*(UINT16 *) FixupData == *Fixup16) {
+ *Fixup16 = (UINT16) (*Fixup16 + ((UINT16) Adjust & 0xffff));
+ }
- FixupData = FixupData + sizeof (UINT32);
- break;
+ FixupData = FixupData + sizeof (UINT16);
+ break;
- case EFI_IMAGE_REL_BASED_DIR64:
- Fixup64 = (UINT64 *)Fixup;
- FixupData = ALIGN_POINTER (FixupData, sizeof (UINT64));
- if (*(UINT64 *) FixupData == *Fixup64) {
- *Fixup64 = *Fixup64 + (UINT64)Adjust;
- }
+ case EFI_IMAGE_REL_BASED_HIGHLOW:
+ Fixup32 = (UINT32 *) Fixup;
+ FixupData = ALIGN_POINTER (FixupData, sizeof (UINT32));
+ if (*(UINT32 *) FixupData == *Fixup32) {
+ *Fixup32 = *Fixup32 + (UINT32) Adjust;
+ }
- FixupData = FixupData + sizeof (UINT64);
- break;
+ FixupData = FixupData + sizeof (UINT32);
+ break;
- default:
+ case EFI_IMAGE_REL_BASED_DIR64:
+ Fixup64 = (UINT64 *)Fixup;
+ FixupData = ALIGN_POINTER (FixupData, sizeof (UINT64));
+ if (*(UINT64 *) FixupData == *Fixup64) {
+ *Fixup64 = *Fixup64 + (UINT64)Adjust;
+ }
+
+ FixupData = FixupData + sizeof (UINT64);
+ break;
+
+ default:
+ //
+ // Only Itanium requires ConvertPeImage_Ex
+ //
+ Status = PeHotRelocateImageEx (Reloc, Fixup, &FixupData, Adjust);
+ if (RETURN_ERROR (Status)) {
+ return ;
+ }
+ }
//
- // Only Itanium requires ConvertPeImage_Ex
+ // Next relocation record
//
- Status = PeHotRelocateImageEx (Reloc, Fixup, &FixupData, Adjust);
- if (RETURN_ERROR (Status)) {
- return ;
- }
+ Reloc += 1;
}
//
- // Next relocation record
+ // next reloc block
//
- Reloc += 1;
+ RelocBase = (EFI_IMAGE_BASE_RELOCATION *) RelocEnd;
}
- //
- // next reloc block
- //
- RelocBase = (EFI_IMAGE_BASE_RELOCATION *) RelocEnd;
}
}
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