diff options
Diffstat (limited to 'Tools/CCode/Source/PeCoffLoader/BasePeCoff.c')
| -rw-r--r-- | Tools/CCode/Source/PeCoffLoader/BasePeCoff.c | 1060 |
1 files changed, 1060 insertions, 0 deletions
diff --git a/Tools/CCode/Source/PeCoffLoader/BasePeCoff.c b/Tools/CCode/Source/PeCoffLoader/BasePeCoff.c new file mode 100644 index 0000000000..9c25e1f4b8 --- /dev/null +++ b/Tools/CCode/Source/PeCoffLoader/BasePeCoff.c @@ -0,0 +1,1060 @@ +/*++
+
+Copyright (c) 2004 - 2005, Intel Corporation
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+Module Name:
+
+ PeCoffLoader.c
+
+Abstract:
+
+ Tiano PE/COFF loader
+
+Revision History
+
+--*/
+
+
+#include <Common/UefiBaseTypes.h>
+#include <Common/EfiImage.h>
+#include <Library/PeCoffLib.h>
+
+STATIC
+RETURN_STATUS
+PeCoffLoaderGetPeHeader (
+ IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,
+ OUT EFI_IMAGE_NT_HEADERS *PeHdr,
+ OUT EFI_TE_IMAGE_HEADER *TeHdr
+ );
+
+STATIC
+RETURN_STATUS
+PeCoffLoaderCheckImageType (
+ IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,
+ IN EFI_IMAGE_NT_HEADERS *PeHdr,
+ IN EFI_TE_IMAGE_HEADER *TeHdr
+ );
+
+STATIC
+VOID *
+PeCoffLoaderImageAddress (
+ IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,
+ IN UINTN Address
+ );
+
+
+STATIC
+RETURN_STATUS
+PeCoffLoaderGetPeHeader (
+ IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,
+ OUT EFI_IMAGE_NT_HEADERS *PeHdr,
+ OUT EFI_TE_IMAGE_HEADER *TeHdr
+ )
+/*++
+
+Routine Description:
+
+ Retrieves the PE or TE Header from a PE/COFF or TE image
+
+Arguments:
+
+ ImageContext - The context of the image being loaded
+
+ PeHdr - The buffer in which to return the PE header
+
+ TeHdr - The buffer in which to return the TE header
+
+Returns:
+
+ RETURN_SUCCESS if the PE or TE Header is read,
+ Otherwise, the error status from reading the PE/COFF or TE image using the ImageRead function.
+
+--*/
+{
+ RETURN_STATUS Status;
+ EFI_IMAGE_DOS_HEADER DosHdr;
+ UINTN Size;
+
+ ImageContext->IsTeImage = FALSE;
+ //
+ // Read the DOS image headers
+ //
+ Size = sizeof (EFI_IMAGE_DOS_HEADER);
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ 0,
+ &Size,
+ &DosHdr
+ );
+ if (RETURN_ERROR (Status)) {
+ ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
+ return Status;
+ }
+
+ ImageContext->PeCoffHeaderOffset = 0;
+ if (DosHdr.e_magic == EFI_IMAGE_DOS_SIGNATURE) {
+ //
+ // DOS image header is present, so read the PE header after the DOS image header
+ //
+ ImageContext->PeCoffHeaderOffset = DosHdr.e_lfanew;
+ }
+ //
+ // Read the PE/COFF Header
+ //
+ Size = sizeof (EFI_IMAGE_NT_HEADERS);
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ ImageContext->PeCoffHeaderOffset,
+ &Size,
+ PeHdr
+ );
+ if (RETURN_ERROR (Status)) {
+ ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
+ return Status;
+ }
+ //
+ // Check the PE/COFF Header Signature. If not, then try to read a TE header
+ //
+ if (PeHdr->Signature != EFI_IMAGE_NT_SIGNATURE) {
+ Size = sizeof (EFI_TE_IMAGE_HEADER);
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ 0,
+ &Size,
+ TeHdr
+ );
+ if (TeHdr->Signature != EFI_TE_IMAGE_HEADER_SIGNATURE) {
+ return RETURN_UNSUPPORTED;
+ }
+
+ ImageContext->IsTeImage = TRUE;
+ }
+
+ return RETURN_SUCCESS;
+}
+
+STATIC
+RETURN_STATUS
+PeCoffLoaderCheckImageType (
+ IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,
+ IN EFI_IMAGE_NT_HEADERS *PeHdr,
+ IN EFI_TE_IMAGE_HEADER *TeHdr
+ )
+/*++
+
+Routine Description:
+
+ Checks the PE or TE header of a PE/COFF or TE image to determine if it supported
+
+Arguments:
+
+ ImageContext - The context of the image being loaded
+
+ PeHdr - The buffer in which to return the PE header
+
+ TeHdr - The buffer in which to return the TE header
+
+Returns:
+
+ RETURN_SUCCESS if the PE/COFF or TE image is supported
+ RETURN_UNSUPPORTED of the PE/COFF or TE image is not supported.
+
+--*/
+{
+ //
+ // See if the machine type is supported. We support a native machine type (IA-32/Itanium-based)
+ // and the machine type for the Virtual Machine.
+ //
+ if (ImageContext->IsTeImage == FALSE) {
+ ImageContext->Machine = PeHdr->FileHeader.Machine;
+ } else {
+ ImageContext->Machine = TeHdr->Machine;
+ }
+
+ if (!(EFI_IMAGE_MACHINE_TYPE_SUPPORTED (ImageContext->Machine))) {
+ ImageContext->ImageError = IMAGE_ERROR_INVALID_MACHINE_TYPE;
+ return RETURN_UNSUPPORTED;
+ }
+
+ //
+ // See if the image type is supported. We support EFI Applications,
+ // EFI Boot Service Drivers, and EFI Runtime Drivers.
+ //
+ if (ImageContext->IsTeImage == FALSE) {
+ ImageContext->ImageType = PeHdr->OptionalHeader.Subsystem;
+ } else {
+ ImageContext->ImageType = (UINT16) (TeHdr->Subsystem);
+ }
+
+
+ return RETURN_SUCCESS;
+}
+
+RETURN_STATUS
+EFIAPI
+PeCoffLoaderGetImageInfo (
+ IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
+ )
+/*++
+
+Routine Description:
+
+ Retrieves information on a PE/COFF image
+
+Arguments:
+
+ This - Calling context
+ ImageContext - The context of the image being loaded
+
+Returns:
+
+ RETURN_SUCCESS - The information on the PE/COFF image was collected.
+ RETURN_INVALID_PARAMETER - ImageContext is NULL.
+ RETURN_UNSUPPORTED - The PE/COFF image is not supported.
+ Otherwise - The error status from reading the PE/COFF image using the
+ ImageContext->ImageRead() function
+
+--*/
+{
+ RETURN_STATUS Status;
+ EFI_IMAGE_NT_HEADERS PeHdr;
+ EFI_TE_IMAGE_HEADER TeHdr;
+ EFI_IMAGE_DATA_DIRECTORY *DebugDirectoryEntry;
+ UINTN Size;
+ UINTN Index;
+ UINTN DebugDirectoryEntryRva;
+ UINTN DebugDirectoryEntryFileOffset;
+ UINTN SectionHeaderOffset;
+ EFI_IMAGE_SECTION_HEADER SectionHeader;
+ EFI_IMAGE_DEBUG_DIRECTORY_ENTRY DebugEntry;
+
+ if (NULL == ImageContext) {
+ return RETURN_INVALID_PARAMETER;
+ }
+ //
+ // Assume success
+ //
+ ImageContext->ImageError = IMAGE_ERROR_SUCCESS;
+
+ Status = PeCoffLoaderGetPeHeader (ImageContext, &PeHdr, &TeHdr);
+ if (RETURN_ERROR (Status)) {
+ return Status;
+ }
+ //
+ // Verify machine type
+ //
+ Status = PeCoffLoaderCheckImageType (ImageContext, &PeHdr, &TeHdr);
+ if (RETURN_ERROR (Status)) {
+ return Status;
+ }
+ //
+ // Retrieve the base address of the image
+ //
+ if (!(ImageContext->IsTeImage)) {
+ ImageContext->ImageAddress = PeHdr.OptionalHeader.ImageBase;
+ } else {
+ ImageContext->ImageAddress = (PHYSICAL_ADDRESS) (TeHdr.ImageBase);
+ }
+ //
+ // Initialize the alternate destination address to 0 indicating that it
+ // should not be used.
+ //
+ ImageContext->DestinationAddress = 0;
+
+ //
+ // Initialize the codeview pointer.
+ //
+ ImageContext->CodeView = NULL;
+ ImageContext->PdbPointer = NULL;
+
+ //
+ // Three cases with regards to relocations:
+ // - Image has base relocs, RELOCS_STRIPPED==0 => image is relocatable
+ // - Image has no base relocs, RELOCS_STRIPPED==1 => Image is not relocatable
+ // - Image has no base relocs, RELOCS_STRIPPED==0 => Image is relocatable but
+ // has no base relocs to apply
+ // Obviously having base relocations with RELOCS_STRIPPED==1 is invalid.
+ //
+ // Look at the file header to determine if relocations have been stripped, and
+ // save this info in the image context for later use.
+ //
+ if ((!(ImageContext->IsTeImage)) && ((PeHdr.FileHeader.Characteristics & EFI_IMAGE_FILE_RELOCS_STRIPPED) != 0)) {
+ ImageContext->RelocationsStripped = TRUE;
+ } else {
+ ImageContext->RelocationsStripped = FALSE;
+ }
+
+ if (!(ImageContext->IsTeImage)) {
+ ImageContext->ImageSize = (UINT64) PeHdr.OptionalHeader.SizeOfImage;
+ ImageContext->SectionAlignment = PeHdr.OptionalHeader.SectionAlignment;
+ ImageContext->SizeOfHeaders = PeHdr.OptionalHeader.SizeOfHeaders;
+
+ //
+ // Modify ImageSize to contain .PDB file name if required and initialize
+ // PdbRVA field...
+ //
+ if (PeHdr.OptionalHeader.NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_DEBUG) {
+ DebugDirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *) &(PeHdr.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);
+
+ DebugDirectoryEntryRva = DebugDirectoryEntry->VirtualAddress;
+
+ //
+ // Determine the file offset of the debug directory... This means we walk
+ // the sections to find which section contains the RVA of the debug
+ // directory
+ //
+ DebugDirectoryEntryFileOffset = 0;
+
+ SectionHeaderOffset = (UINTN)(
+ ImageContext->PeCoffHeaderOffset +
+ sizeof (UINT32) +
+ sizeof (EFI_IMAGE_FILE_HEADER) +
+ PeHdr.FileHeader.SizeOfOptionalHeader
+ );
+
+ for (Index = 0; Index < PeHdr.FileHeader.NumberOfSections; Index++) {
+ //
+ // Read section header from file
+ //
+ Size = sizeof (EFI_IMAGE_SECTION_HEADER);
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ SectionHeaderOffset,
+ &Size,
+ &SectionHeader
+ );
+ if (RETURN_ERROR (Status)) {
+ ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
+ return Status;
+ }
+
+ if (DebugDirectoryEntryRva >= SectionHeader.VirtualAddress &&
+ DebugDirectoryEntryRva < SectionHeader.VirtualAddress + SectionHeader.Misc.VirtualSize) {
+ DebugDirectoryEntryFileOffset =
+ DebugDirectoryEntryRva - SectionHeader.VirtualAddress + SectionHeader.PointerToRawData;
+ break;
+ }
+
+ SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);
+ }
+
+ if (DebugDirectoryEntryFileOffset != 0) {
+ for (Index = 0; Index < DebugDirectoryEntry->Size; Index++) {
+ //
+ // Read next debug directory entry
+ //
+ Size = sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ DebugDirectoryEntryFileOffset,
+ &Size,
+ &DebugEntry
+ );
+ if (RETURN_ERROR (Status)) {
+ ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
+ return Status;
+ }
+
+ if (DebugEntry.Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {
+ ImageContext->DebugDirectoryEntryRva = (UINT32) (DebugDirectoryEntryRva + Index * sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY));
+ if (DebugEntry.RVA == 0 && DebugEntry.FileOffset != 0) {
+ ImageContext->ImageSize += DebugEntry.SizeOfData;
+ }
+
+ return RETURN_SUCCESS;
+ }
+ }
+ }
+ }
+ } else {
+ ImageContext->ImageSize = 0;
+ ImageContext->SectionAlignment = 4096;
+ ImageContext->SizeOfHeaders = sizeof (EFI_TE_IMAGE_HEADER) + (UINTN) TeHdr.BaseOfCode - (UINTN) TeHdr.StrippedSize;
+
+ DebugDirectoryEntry = &TeHdr.DataDirectory[1];
+ DebugDirectoryEntryRva = DebugDirectoryEntry->VirtualAddress;
+ SectionHeaderOffset = (UINTN) (sizeof (EFI_TE_IMAGE_HEADER));
+
+ DebugDirectoryEntryFileOffset = 0;
+
+ for (Index = 0; Index < TeHdr.NumberOfSections;) {
+ //
+ // Read section header from file
+ //
+ Size = sizeof (EFI_IMAGE_SECTION_HEADER);
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ SectionHeaderOffset,
+ &Size,
+ &SectionHeader
+ );
+ if (RETURN_ERROR (Status)) {
+ ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
+ return Status;
+ }
+
+ if (DebugDirectoryEntryRva >= SectionHeader.VirtualAddress &&
+ DebugDirectoryEntryRva < SectionHeader.VirtualAddress + SectionHeader.Misc.VirtualSize) {
+ DebugDirectoryEntryFileOffset = DebugDirectoryEntryRva -
+ SectionHeader.VirtualAddress +
+ SectionHeader.PointerToRawData +
+ sizeof (EFI_TE_IMAGE_HEADER) -
+ TeHdr.StrippedSize;
+
+ //
+ // File offset of the debug directory was found, if this is not the last
+ // section, then skip to the last section for calculating the image size.
+ //
+ if (Index < (UINTN) TeHdr.NumberOfSections - 1) {
+ SectionHeaderOffset += (TeHdr.NumberOfSections - 1 - Index) * sizeof (EFI_IMAGE_SECTION_HEADER);
+ Index = TeHdr.NumberOfSections - 1;
+ continue;
+ }
+ }
+
+ //
+ // In Te image header there is not a field to describe the ImageSize.
+ // Actually, the ImageSize equals the RVA plus the VirtualSize of
+ // the last section mapped into memory (Must be rounded up to
+ // a mulitple of Section Alignment). Per the PE/COFF specification, the
+ // section headers in the Section Table must appear in order of the RVA
+ // values for the corresponding sections. So the ImageSize can be determined
+ // by the RVA and the VirtualSize of the last section header in the
+ // Section Table.
+ //
+ if ((++Index) == (UINTN) TeHdr.NumberOfSections) {
+ ImageContext->ImageSize = (SectionHeader.VirtualAddress + SectionHeader.Misc.VirtualSize +
+ ImageContext->SectionAlignment - 1) & ~(ImageContext->SectionAlignment - 1);
+ }
+
+ SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);
+ }
+
+ if (DebugDirectoryEntryFileOffset != 0) {
+ for (Index = 0; Index < DebugDirectoryEntry->Size; Index++) {
+ //
+ // Read next debug directory entry
+ //
+ Size = sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ DebugDirectoryEntryFileOffset,
+ &Size,
+ &DebugEntry
+ );
+ if (RETURN_ERROR (Status)) {
+ ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
+ return Status;
+ }
+
+ if (DebugEntry.Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {
+ ImageContext->DebugDirectoryEntryRva = (UINT32) (DebugDirectoryEntryRva + Index * sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY));
+ return RETURN_SUCCESS;
+ }
+ }
+ }
+ }
+
+ return RETURN_SUCCESS;
+}
+
+STATIC
+VOID *
+PeCoffLoaderImageAddress (
+ IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,
+ IN UINTN Address
+ )
+/*++
+
+Routine Description:
+
+ Converts an image address to the loaded address
+
+Arguments:
+
+ ImageContext - The context of the image being loaded
+
+ Address - The address to be converted to the loaded address
+
+Returns:
+
+ NULL if the address can not be converted, otherwise, the converted address
+
+--*/
+{
+ if (Address >= ImageContext->ImageSize) {
+ ImageContext->ImageError = IMAGE_ERROR_INVALID_IMAGE_ADDRESS;
+ return NULL;
+ }
+
+ return (CHAR8 *) ((UINTN) ImageContext->ImageAddress + Address);
+}
+
+RETURN_STATUS
+EFIAPI
+PeCoffLoaderRelocateImage (
+ IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
+ )
+/*++
+
+Routine Description:
+
+ Relocates a PE/COFF image in memory
+
+Arguments:
+
+ This - Calling context
+
+ ImageContext - Contains information on the loaded image to relocate
+
+Returns:
+
+ RETURN_SUCCESS if the PE/COFF image was relocated
+ RETURN_LOAD_ERROR if the image is not a valid PE/COFF image
+ RETURN_UNSUPPORTED not support
+
+--*/
+{
+ RETURN_STATUS Status;
+ EFI_IMAGE_NT_HEADERS *PeHdr;
+ EFI_TE_IMAGE_HEADER *TeHdr;
+ EFI_IMAGE_DATA_DIRECTORY *RelocDir;
+ UINT64 Adjust;
+ EFI_IMAGE_BASE_RELOCATION *RelocBase;
+ EFI_IMAGE_BASE_RELOCATION *RelocBaseEnd;
+ UINT16 *Reloc;
+ UINT16 *RelocEnd;
+ CHAR8 *Fixup;
+ CHAR8 *FixupBase;
+ UINT16 *F16;
+ UINT32 *F32;
+ CHAR8 *FixupData;
+ PHYSICAL_ADDRESS BaseAddress;
+
+ PeHdr = NULL;
+ TeHdr = NULL;
+ //
+ // Assume success
+ //
+ ImageContext->ImageError = IMAGE_ERROR_SUCCESS;
+
+ //
+ // If there are no relocation entries, then we are done
+ //
+ if (ImageContext->RelocationsStripped) {
+ return RETURN_SUCCESS;
+ }
+
+ //
+ // If the destination address is not 0, use that rather than the
+ // image address as the relocation target.
+ //
+ if (ImageContext->DestinationAddress) {
+ BaseAddress = ImageContext->DestinationAddress;
+ } else {
+ BaseAddress = ImageContext->ImageAddress;
+ }
+
+ if (!(ImageContext->IsTeImage)) {
+ PeHdr = (EFI_IMAGE_NT_HEADERS *)((UINTN)ImageContext->ImageAddress +
+ ImageContext->PeCoffHeaderOffset);
+ Adjust = (UINT64) BaseAddress - PeHdr->OptionalHeader.ImageBase;
+ PeHdr->OptionalHeader.ImageBase = (UINTN) BaseAddress;
+
+ //
+ // Find the relocation block
+ //
+ // Per the PE/COFF spec, you can't assume that a given data directory
+ // is present in the image. You have to check the NumberOfRvaAndSizes in
+ // the optional header to verify a desired directory entry is there.
+ //
+ if (PeHdr->OptionalHeader.NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC) {
+ RelocDir = &PeHdr->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];
+ RelocBase = PeCoffLoaderImageAddress (ImageContext, RelocDir->VirtualAddress);
+ RelocBaseEnd = PeCoffLoaderImageAddress (
+ ImageContext,
+ RelocDir->VirtualAddress + RelocDir->Size - 1
+ );
+ } else {
+ //
+ // Set base and end to bypass processing below.
+ //
+ RelocBase = RelocBaseEnd = 0;
+ }
+ } else {
+ TeHdr = (EFI_TE_IMAGE_HEADER *) (UINTN) (ImageContext->ImageAddress);
+ Adjust = (UINT64) (BaseAddress - TeHdr->ImageBase);
+ TeHdr->ImageBase = (UINT64) (BaseAddress);
+
+ //
+ // Find the relocation block
+ //
+ RelocDir = &TeHdr->DataDirectory[0];
+ RelocBase = (EFI_IMAGE_BASE_RELOCATION *)(UINTN)(
+ ImageContext->ImageAddress +
+ RelocDir->VirtualAddress +
+ sizeof(EFI_TE_IMAGE_HEADER) -
+ TeHdr->StrippedSize
+ );
+ RelocBaseEnd = (EFI_IMAGE_BASE_RELOCATION *) ((UINTN) RelocBase + (UINTN) RelocDir->Size - 1);
+ }
+
+ //
+ // Run the relocation information and apply the fixups
+ //
+ FixupData = ImageContext->FixupData;
+ while (RelocBase < RelocBaseEnd) {
+
+ Reloc = (UINT16 *) ((CHAR8 *) RelocBase + sizeof (EFI_IMAGE_BASE_RELOCATION));
+ RelocEnd = (UINT16 *) ((CHAR8 *) RelocBase + RelocBase->SizeOfBlock);
+ if (!(ImageContext->IsTeImage)) {
+ FixupBase = PeCoffLoaderImageAddress (ImageContext, RelocBase->VirtualAddress);
+ } else {
+ FixupBase = (CHAR8 *)(UINTN)(ImageContext->ImageAddress +
+ RelocBase->VirtualAddress +
+ sizeof(EFI_TE_IMAGE_HEADER) -
+ TeHdr->StrippedSize
+ );
+ }
+
+ if ((CHAR8 *) RelocEnd < (CHAR8 *) ((UINTN) ImageContext->ImageAddress) ||
+ (CHAR8 *) RelocEnd > (CHAR8 *)((UINTN)ImageContext->ImageAddress +
+ (UINTN)ImageContext->ImageSize)) {
+ ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
+ return RETURN_LOAD_ERROR;
+ }
+
+ //
+ // Run this relocation record
+ //
+ while (Reloc < RelocEnd) {
+
+ Fixup = FixupBase + (*Reloc & 0xFFF);
+ switch ((*Reloc) >> 12) {
+ case EFI_IMAGE_REL_BASED_ABSOLUTE:
+ break;
+
+ case EFI_IMAGE_REL_BASED_HIGH:
+ F16 = (UINT16 *) Fixup;
+ *F16 = (UINT16) (*F16 + ((UINT16) ((UINT32) Adjust >> 16)));
+ if (FixupData != NULL) {
+ *(UINT16 *) FixupData = *F16;
+ FixupData = FixupData + sizeof (UINT16);
+ }
+ break;
+
+ case EFI_IMAGE_REL_BASED_LOW:
+ F16 = (UINT16 *) Fixup;
+ *F16 = (UINT16) (*F16 + (UINT16) Adjust);
+ if (FixupData != NULL) {
+ *(UINT16 *) FixupData = *F16;
+ FixupData = FixupData + sizeof (UINT16);
+ }
+ break;
+
+ case EFI_IMAGE_REL_BASED_HIGHLOW:
+ F32 = (UINT32 *) Fixup;
+ *F32 = *F32 + (UINT32) Adjust;
+ if (FixupData != NULL) {
+ FixupData = ALIGN_POINTER (FixupData, sizeof (UINT32));
+ *(UINT32 *) FixupData = *F32;
+ FixupData = FixupData + sizeof (UINT32);
+ }
+ break;
+
+ case EFI_IMAGE_REL_BASED_HIGHADJ:
+ //
+ // Return the same EFI_UNSUPPORTED return code as
+ // PeCoffLoaderRelocateImageEx() returns if it does not recognize
+ // the relocation type.
+ //
+ ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
+ return RETURN_UNSUPPORTED;
+
+ default:
+ Status = PeCoffLoaderRelocateImageEx (Reloc, Fixup, &FixupData, Adjust);
+ if (RETURN_ERROR (Status)) {
+ ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
+ return Status;
+ }
+ }
+
+ //
+ // Next relocation record
+ //
+ Reloc += 1;
+ }
+
+ //
+ // Next reloc block
+ //
+ RelocBase = (EFI_IMAGE_BASE_RELOCATION *) RelocEnd;
+ }
+
+ return RETURN_SUCCESS;
+}
+
+RETURN_STATUS
+EFIAPI
+PeCoffLoaderLoadImage (
+ IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
+ )
+/*++
+
+Routine Description:
+
+ Loads a PE/COFF image into memory
+
+Arguments:
+
+ This - Calling context
+
+ ImageContext - Contains information on image to load into memory
+
+Returns:
+
+ RETURN_SUCCESS if the PE/COFF image was loaded
+ RETURN_BUFFER_TOO_SMALL if the caller did not provide a large enough buffer
+ RETURN_LOAD_ERROR if the image is a runtime driver with no relocations
+ RETURN_INVALID_PARAMETER if the image address is invalid
+
+--*/
+{
+ RETURN_STATUS Status;
+ EFI_IMAGE_NT_HEADERS *PeHdr;
+ EFI_TE_IMAGE_HEADER *TeHdr;
+ PE_COFF_LOADER_IMAGE_CONTEXT CheckContext;
+ EFI_IMAGE_SECTION_HEADER *FirstSection;
+ EFI_IMAGE_SECTION_HEADER *Section;
+ UINTN NumberOfSections;
+ UINTN Index;
+ CHAR8 *Base;
+ CHAR8 *End;
+ CHAR8 *MaxEnd;
+ EFI_IMAGE_DATA_DIRECTORY *DirectoryEntry;
+ EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *DebugEntry;
+ UINTN Size;
+ UINT32 TempDebugEntryRva;
+
+ PeHdr = NULL;
+ TeHdr = NULL;
+ //
+ // Assume success
+ //
+ ImageContext->ImageError = IMAGE_ERROR_SUCCESS;
+
+ //
+ // Copy the provided context info into our local version, get what we
+ // can from the original image, and then use that to make sure everything
+ // is legit.
+ //
+ CopyMem (&CheckContext, ImageContext, sizeof (PE_COFF_LOADER_IMAGE_CONTEXT));
+
+ Status = PeCoffLoaderGetImageInfo (&CheckContext);
+ if (RETURN_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Make sure there is enough allocated space for the image being loaded
+ //
+ if (ImageContext->ImageSize < CheckContext.ImageSize) {
+ ImageContext->ImageError = IMAGE_ERROR_INVALID_IMAGE_SIZE;
+ return RETURN_BUFFER_TOO_SMALL;
+ }
+
+ //
+ // If there's no relocations, then make sure it's not a runtime driver,
+ // and that it's being loaded at the linked address.
+ //
+ if (CheckContext.RelocationsStripped) {
+ //
+ // If the image does not contain relocations and it is a runtime driver
+ // then return an error.
+ //
+ if (CheckContext.ImageType == EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER) {
+ ImageContext->ImageError = IMAGE_ERROR_INVALID_SUBSYSTEM;
+ return RETURN_LOAD_ERROR;
+ }
+ //
+ // If the image does not contain relocations, and the requested load address
+ // is not the linked address, then return an error.
+ //
+ if (CheckContext.ImageAddress != ImageContext->ImageAddress) {
+ ImageContext->ImageError = IMAGE_ERROR_INVALID_IMAGE_ADDRESS;
+ return RETURN_INVALID_PARAMETER;
+ }
+ }
+ //
+ // Make sure the allocated space has the proper section alignment
+ //
+ if (!(ImageContext->IsTeImage)) {
+ if ((ImageContext->ImageAddress & (CheckContext.SectionAlignment - 1)) != 0) {
+ ImageContext->ImageError = IMAGE_ERROR_INVALID_SECTION_ALIGNMENT;
+ return RETURN_INVALID_PARAMETER;
+ }
+ }
+ //
+ // Read the entire PE/COFF or TE header into memory
+ //
+ if (!(ImageContext->IsTeImage)) {
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ 0,
+ &ImageContext->SizeOfHeaders,
+ (VOID *) (UINTN) ImageContext->ImageAddress
+ );
+
+ PeHdr = (EFI_IMAGE_NT_HEADERS *)
+ ((UINTN)ImageContext->ImageAddress + ImageContext->PeCoffHeaderOffset);
+
+ FirstSection = (EFI_IMAGE_SECTION_HEADER *) (
+ (UINTN)ImageContext->ImageAddress +
+ ImageContext->PeCoffHeaderOffset +
+ sizeof(UINT32) +
+ sizeof(EFI_IMAGE_FILE_HEADER) +
+ PeHdr->FileHeader.SizeOfOptionalHeader
+ );
+ NumberOfSections = (UINTN) (PeHdr->FileHeader.NumberOfSections);
+ } else {
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ 0,
+ &ImageContext->SizeOfHeaders,
+ (void *) (UINTN) ImageContext->ImageAddress
+ );
+
+ TeHdr = (EFI_TE_IMAGE_HEADER *) (UINTN) (ImageContext->ImageAddress);
+
+ FirstSection = (EFI_IMAGE_SECTION_HEADER *) (
+ (UINTN)ImageContext->ImageAddress +
+ sizeof(EFI_TE_IMAGE_HEADER)
+ );
+ NumberOfSections = (UINTN) (TeHdr->NumberOfSections);
+
+ }
+
+ if (RETURN_ERROR (Status)) {
+ ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
+ return RETURN_LOAD_ERROR;
+ }
+
+ //
+ // Load each section of the image
+ //
+ Section = FirstSection;
+ for (Index = 0, MaxEnd = NULL; Index < NumberOfSections; Index++) {
+
+ //
+ // Compute sections address
+ //
+ Base = PeCoffLoaderImageAddress (ImageContext, Section->VirtualAddress);
+ End = PeCoffLoaderImageAddress (
+ ImageContext,
+ Section->VirtualAddress + Section->Misc.VirtualSize - 1
+ );
+ if (ImageContext->IsTeImage) {
+ Base = (CHAR8 *) ((UINTN) Base + sizeof (EFI_TE_IMAGE_HEADER) - (UINTN) TeHdr->StrippedSize);
+ End = (CHAR8 *) ((UINTN) End + sizeof (EFI_TE_IMAGE_HEADER) - (UINTN) TeHdr->StrippedSize);
+ }
+
+ if (End > MaxEnd) {
+ MaxEnd = End;
+ }
+ //
+ // If the base start or end address resolved to 0, then fail.
+ //
+ if ((Base == NULL) || (End == NULL)) {
+ ImageContext->ImageError = IMAGE_ERROR_SECTION_NOT_LOADED;
+ return RETURN_LOAD_ERROR;
+ }
+
+ //
+ // Read the section
+ //
+ Size = (UINTN) Section->Misc.VirtualSize;
+ if ((Size == 0) || (Size > Section->SizeOfRawData)) {
+ Size = (UINTN) Section->SizeOfRawData;
+ }
+
+ if (Section->SizeOfRawData) {
+ if (!(ImageContext->IsTeImage)) {
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ Section->PointerToRawData,
+ &Size,
+ Base
+ );
+ } else {
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ Section->PointerToRawData + sizeof (EFI_TE_IMAGE_HEADER) - (UINTN) TeHdr->StrippedSize,
+ &Size,
+ Base
+ );
+ }
+
+ if (RETURN_ERROR (Status)) {
+ ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
+ return Status;
+ }
+ }
+
+ //
+ // If raw size is less then virt size, zero fill the remaining
+ //
+
+ if (Size < Section->Misc.VirtualSize) {
+ ZeroMem (Base + Size, Section->Misc.VirtualSize - Size);
+ }
+
+ //
+ // Next Section
+ //
+ Section += 1;
+ }
+
+ //
+ // Get image's entry point
+ //
+ if (!(ImageContext->IsTeImage)) {
+ ImageContext->EntryPoint = (PHYSICAL_ADDRESS) (UINTN) PeCoffLoaderImageAddress (
+ ImageContext,
+ PeHdr->OptionalHeader.AddressOfEntryPoint
+ );
+ } else {
+ ImageContext->EntryPoint = (PHYSICAL_ADDRESS) (
+ (UINTN)ImageContext->ImageAddress +
+ (UINTN)TeHdr->AddressOfEntryPoint +
+ (UINTN)sizeof(EFI_TE_IMAGE_HEADER) -
+ (UINTN) TeHdr->StrippedSize
+ );
+ }
+
+ //
+ // Determine the size of the fixup data
+ //
+ // Per the PE/COFF spec, you can't assume that a given data directory
+ // is present in the image. You have to check the NumberOfRvaAndSizes in
+ // the optional header to verify a desired directory entry is there.
+ //
+ if (!(ImageContext->IsTeImage)) {
+ if (PeHdr->OptionalHeader.NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC) {
+ DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)
+ &PeHdr->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];
+ ImageContext->FixupDataSize = DirectoryEntry->Size / sizeof (UINT16) * sizeof (UINTN);
+ } else {
+ ImageContext->FixupDataSize = 0;
+ }
+ } else {
+ DirectoryEntry = &TeHdr->DataDirectory[0];
+ ImageContext->FixupDataSize = DirectoryEntry->Size / sizeof (UINT16) * sizeof (UINTN);
+ }
+ //
+ // Consumer must allocate a buffer for the relocation fixup log.
+ // Only used for runtime drivers.
+ //
+ ImageContext->FixupData = NULL;
+
+ //
+ // Load the Codeview info if present
+ //
+ if (ImageContext->DebugDirectoryEntryRva != 0) {
+ if (!(ImageContext->IsTeImage)) {
+ DebugEntry = PeCoffLoaderImageAddress (
+ ImageContext,
+ ImageContext->DebugDirectoryEntryRva
+ );
+ } else {
+ DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *)(UINTN)(
+ ImageContext->ImageAddress +
+ ImageContext->DebugDirectoryEntryRva +
+ sizeof(EFI_TE_IMAGE_HEADER) -
+ TeHdr->StrippedSize
+ );
+ }
+
+ if (DebugEntry != NULL) {
+ TempDebugEntryRva = DebugEntry->RVA;
+ if (DebugEntry->RVA == 0 && DebugEntry->FileOffset != 0) {
+ Section--;
+ if ((UINTN) Section->SizeOfRawData < Section->Misc.VirtualSize) {
+ TempDebugEntryRva = Section->VirtualAddress + Section->Misc.VirtualSize;
+ } else {
+ TempDebugEntryRva = Section->VirtualAddress + Section->SizeOfRawData;
+ }
+ }
+
+ if (TempDebugEntryRva != 0) {
+ if (!(ImageContext->IsTeImage)) {
+ ImageContext->CodeView = PeCoffLoaderImageAddress (ImageContext, TempDebugEntryRva);
+ } else {
+ ImageContext->CodeView = (VOID *)(
+ (UINTN)ImageContext->ImageAddress +
+ (UINTN)TempDebugEntryRva +
+ (UINTN)sizeof(EFI_TE_IMAGE_HEADER) -
+ (UINTN) TeHdr->StrippedSize
+ );
+ }
+
+ if (ImageContext->CodeView == NULL) {
+ ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
+ return RETURN_LOAD_ERROR;
+ }
+
+ if (DebugEntry->RVA == 0) {
+ Size = DebugEntry->SizeOfData;
+ if (!(ImageContext->IsTeImage)) {
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ DebugEntry->FileOffset,
+ &Size,
+ ImageContext->CodeView
+ );
+ } else {
+ Status = ImageContext->ImageRead (
+ ImageContext->Handle,
+ DebugEntry->FileOffset + sizeof (EFI_TE_IMAGE_HEADER) - TeHdr->StrippedSize,
+ &Size,
+ ImageContext->CodeView
+ );
+ //
+ // Should we apply fix up to this field according to the size difference between PE and TE?
+ // Because now we maintain TE header fields unfixed, this field will also remain as they are
+ // in original PE image.
+ //
+ }
+
+ if (RETURN_ERROR (Status)) {
+ ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
+ return RETURN_LOAD_ERROR;
+ }
+
+ DebugEntry->RVA = TempDebugEntryRva;
+ }
+
+ switch (*(UINT32 *) ImageContext->CodeView) {
+ case CODEVIEW_SIGNATURE_NB10:
+ ImageContext->PdbPointer = (CHAR8 *) ImageContext->CodeView + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY);
+ break;
+
+ case CODEVIEW_SIGNATURE_RSDS:
+ ImageContext->PdbPointer = (CHAR8 *) ImageContext->CodeView + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY);
+ break;
+
+ default:
+ break;
+ }
+ }
+ }
+ }
+
+ return Status;
+}
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