From 5290e960dd53494534fb2c1d9cc640986dcbe184 Mon Sep 17 00:00:00 2001 From: alfred Date: Tue, 6 Jun 2006 06:25:59 +0000 Subject: [PATCH] git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@426 6f19259b-4bc3-4df7-8a09-765794883524 --- .../EdkPeCoffLoaderLibX64.c | 1880 ++++++++--------- 1 file changed, 940 insertions(+), 940 deletions(-) diff --git a/EdkModulePkg/Library/EdkPeCoffLoaderLibX64/EdkPeCoffLoaderLibX64.c b/EdkModulePkg/Library/EdkPeCoffLoaderLibX64/EdkPeCoffLoaderLibX64.c index 5ed74f5a92..36fad75111 100644 --- a/EdkModulePkg/Library/EdkPeCoffLoaderLibX64/EdkPeCoffLoaderLibX64.c +++ b/EdkModulePkg/Library/EdkPeCoffLoaderLibX64/EdkPeCoffLoaderLibX64.c @@ -1,940 +1,940 @@ -/*++ - -Copyright (c) 2006, 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: - - EdkPeCoffLoaderX64.c - -Abstract: - - Wrap the Base PE/COFF loader with the PE COFF Protocol - - ---*/ - -#define IMAGE_64_MACHINE_TYPE_SUPPORTED(Machine) \ - ((Machine) == EFI_IMAGE_MACHINE_IA32 || \ - (Machine) == EFI_IMAGE_MACHINE_X64 || \ - (Machine) == EFI_IMAGE_MACHINE_EBC) - -STATIC -EFI_STATUS -PeCoffLoader64GetPeHeader ( - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext, - OUT EFI_IMAGE_NT_HEADERS64 *PeHdr - ); - -STATIC -EFI_STATUS -PeCoffLoader64CheckImageType ( - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext, - IN EFI_IMAGE_NT_HEADERS64 *PeHdr - ); - -STATIC -VOID * -PeCoffLoader64ImageAddress ( - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext, - IN UINTN Address - ); - -EFI_STATUS -EFIAPI -PeCoffLoader64GetImageInfo ( - IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext - ); - -EFI_STATUS -EFIAPI -PeCoffLoader64RelocateImage ( - IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext - ); - -EFI_STATUS -EFIAPI -PeCoffLoader64LoadImage ( - IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext - ); - -EFI_STATUS -EFIAPI -PeCoffLoader64UnloadImage ( - IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, - IN PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext - ); - -EFI_STATUS -PeCoffLoader64RelocateImageEx ( - IN UINT16 *Reloc, - IN OUT CHAR8 *Fixup, - IN OUT CHAR8 **FixupData, - IN UINT64 Adjust - ); - -EFI_PEI_PE_COFF_LOADER_PROTOCOL mPeCoffLoaderX64 = { - PeCoffLoader64GetImageInfo, - PeCoffLoader64LoadImage, - PeCoffLoader64RelocateImage, - PeCoffLoader64UnloadImage -}; - -STATIC -EFI_STATUS -PeCoffLoader64GetPeHeader ( - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext, - OUT EFI_IMAGE_NT_HEADERS64 *PeHdr - ) -/*++ - -Routine Description: - Retrieves the PE Header from a PE/COFF image - -Arguments: - ImageContext - The context of the image being loaded - PeHdr - The buffer in which to return the PE header - -Returns: - EFI_SUCCESS if the PE Header is read, - Otherwise, the error status from reading the PE/COFF image using the ImageRead function. - ---*/ -{ - EFI_STATUS Status; - EFI_IMAGE_DOS_HEADER DosHdr; - UINTN Size; - - // - // Read the DOS image headers - // - Size = sizeof (EFI_IMAGE_DOS_HEADER); - Status = ImageContext->ImageRead ( - ImageContext->Handle, - 0, - &Size, - &DosHdr - ); - if (EFI_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_HEADERS64); - Status = ImageContext->ImageRead ( - ImageContext->Handle, - ImageContext->PeCoffHeaderOffset, - &Size, - PeHdr - ); - if (EFI_ERROR (Status)) { - ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ; - return Status; - } - - return EFI_SUCCESS; -} - -static -EFI_STATUS -PeCoffLoader64CheckImageType ( - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext, - IN EFI_IMAGE_NT_HEADERS64 *PeHdr - ) -/*++ - -Routine Description: - Checks the PE header of a PE/COFF 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 - -Returns: - EFI_SUCCESS if the PE/COFF image is supported - EFI_UNSUPPORTED of the PE/COFF image is not supported. - ---*/ -{ - // - // Check the PE/COFF Header SIgnature - // - if (PeHdr->Signature != EFI_IMAGE_NT_SIGNATURE) { - ImageContext->ImageError = IMAGE_ERROR_INVALID_PE_HEADER_SIGNATURE; - return EFI_UNSUPPORTED; - } - - // - // 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. - // - ImageContext->Machine = PeHdr->FileHeader.Machine; - if (!(IMAGE_64_MACHINE_TYPE_SUPPORTED (ImageContext->Machine))) { - ImageContext->ImageError = IMAGE_ERROR_INVALID_MACHINE_TYPE; - return EFI_UNSUPPORTED; - } - - // - // See if the image type is supported. We support EFI Applications, - // EFI Boot Service Drivers, and EFI Runtime Drivers. - // - ImageContext->ImageType = PeHdr->OptionalHeader.Subsystem; - switch (ImageContext->ImageType) { - - case EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION: - ImageContext->ImageCodeMemoryType = EfiLoaderCode; - ImageContext->ImageDataMemoryType = EfiLoaderData; - break; - - case EFI_IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER: - ImageContext->ImageCodeMemoryType = EfiBootServicesCode; - ImageContext->ImageDataMemoryType = EfiBootServicesData; - break; - - case EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER: - case EFI_IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER: - ImageContext->ImageCodeMemoryType = EfiRuntimeServicesCode; - ImageContext->ImageDataMemoryType = EfiRuntimeServicesData; - break; - - default: - ImageContext->ImageError = IMAGE_ERROR_INVALID_SUBSYSTEM; - return EFI_UNSUPPORTED; - } - - return EFI_SUCCESS; -} - -EFI_STATUS -EFIAPI -PeCoffLoader64GetImageInfo ( - IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext - ) -/*++ - -Routine Description: - Retrieves information on a PE/COFF image - -Arguments: - ImageContext - The context of the image being loaded - PeHdr - The buffer in which to return the PE header - -Returns: - EFI_SUCCESS if the information on the PE/COFF image was collected. - EFI_UNSUPPORTED of the PE/COFF image is not supported. - Otherwise, the error status from reading the PE/COFF image using the - ImageContext->ImageRead() function - ---*/ -{ - EFI_STATUS Status; - EFI_IMAGE_NT_HEADERS64 PeHdr; - 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 EFI_INVALID_PARAMETER; - } - - // - // Assume success - // - ImageContext->ImageError = IMAGE_ERROR_SUCCESS; - - Status = PeCoffLoader64GetPeHeader (ImageContext, &PeHdr); - if (EFI_ERROR (Status)) { - return Status; - } - - // - // Verify machine type - // - Status = PeCoffLoader64CheckImageType (ImageContext, &PeHdr); - if (EFI_ERROR(Status)) { - return Status; - } - - // - // Retrieve the base address of the image - // - ImageContext->ImageAddress = PeHdr.OptionalHeader.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 (PeHdr.FileHeader.Characteristics & EFI_IMAGE_FILE_RELOCS_STRIPPED) { - ImageContext->RelocationsStripped = TRUE; - } else { - ImageContext->RelocationsStripped = FALSE; - } - - 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 += 1) { - // - // Read section header from file - // - Size = sizeof (EFI_IMAGE_SECTION_HEADER); - Status = ImageContext->ImageRead ( - ImageContext->Handle, - SectionHeaderOffset, - &Size, - &SectionHeader - ); - if (EFI_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 (EFI_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 EFI_SUCCESS; - } - } - } - } - return EFI_SUCCESS; -} - -static -VOID * -PeCoffLoader64ImageAddress ( - 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); -} - -EFI_STATUS -EFIAPI -PeCoffLoader64RelocateImage ( - IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext - ) -/*++ - -Routine Description: - Relocates a PE/COFF image in memory - -Arguments: - ImageContext - Contains information on the loaded image to relocate - -Returns: - EFI_SUCCESS if the PE/COFF image was relocated - EFI_LOAD_ERROR if the image is not a valid PE/COFF image - ---*/ -{ - EFI_STATUS Status; - EFI_IMAGE_NT_HEADERS64 *PeHdr; - EFI_IMAGE_DATA_DIRECTORY *RelocDir; - IN 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; - EFI_PHYSICAL_ADDRESS BaseAddress; - - - // - // Assume success - // - ImageContext->ImageError = IMAGE_ERROR_SUCCESS; - - // - // If there are no relocation entries, then we are done - // - if (ImageContext->RelocationsStripped) { - return EFI_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; - } - PeHdr = (EFI_IMAGE_NT_HEADERS64 *)((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 = PeCoffLoader64ImageAddress (ImageContext, RelocDir->VirtualAddress); - RelocBaseEnd = PeCoffLoader64ImageAddress ( - ImageContext, - RelocDir->VirtualAddress + RelocDir->Size - 1 - ); -} else { - // - // Set base and end to bypass processing below. - // - RelocBase = RelocBaseEnd = 0; - } - // - // 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); - FixupBase = PeCoffLoader64ImageAddress (ImageContext, RelocBase->VirtualAddress); - if ((CHAR8 *) RelocEnd < (CHAR8 *)((UINTN)ImageContext->ImageAddress) || - (CHAR8 *) RelocEnd > (CHAR8 *)((UINTN)ImageContext->ImageAddress + - (UINTN)ImageContext->ImageSize)) { - ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION; - return EFI_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 << 16) + (UINT16) Adjust); - 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 - // PeCoffLoader64RelocateImageEx() returns if it does not recognize - // the relocation type. - // - ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION; - return EFI_UNSUPPORTED; - default: - Status = PeCoffLoader64RelocateImageEx (Reloc, Fixup, &FixupData, Adjust); - if (EFI_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 EFI_SUCCESS; -} - - -EFI_STATUS -PeCoffLoader64RelocateImageEx ( - IN UINT16 *Reloc, - IN OUT CHAR8 *Fixup, - IN OUT CHAR8 **FixupData, - IN UINT64 Adjust - ) -/*++ - -Routine Description: - Performs an IA-32 specific relocation fixup - -Arguments: - Reloc - Pointer to the relocation record - Fixup - Pointer to the address to fix up - FixupData - Pointer to a buffer to log the fixups - Adjust - The offset to adjust the fixup - -Returns: - None - ---*/ -{ - UINT64 *F64; - - switch ((*Reloc) >> 12) { - - case EFI_IMAGE_REL_BASED_DIR64: - F64 = (UINT64 *) Fixup; - *F64 = *F64 + (UINT64) Adjust; - if (*FixupData != NULL) { - *FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64)); - *(UINT64 *)(*FixupData) = *F64; - *FixupData = *FixupData + sizeof(UINT64); - } - break; - - default: - return EFI_UNSUPPORTED; - } - - return EFI_SUCCESS; -} - - - -EFI_STATUS -EFIAPI -PeCoffLoader64LoadImage ( - IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext - ) -/*++ - -Routine Description: - Loads a PE/COFF image into memory - -Arguments: - ImageContext - Contains information on image to load into memory - -Returns: - EFI_SUCCESS if the PE/COFF image was loaded - EFI_BUFFER_TOO_SMALL if the caller did not provide a large enough buffer - EFI_LOAD_ERROR if the image is a runtime driver with no relocations - EFI_INVALID_PARAMETER if the image address is invalid - ---*/ -{ - EFI_STATUS Status; - EFI_IMAGE_NT_HEADERS64 *PeHdr; - PE_COFF_LOADER_IMAGE_CONTEXT CheckContext; - EFI_IMAGE_SECTION_HEADER *FirstSection; - EFI_IMAGE_SECTION_HEADER *Section; - UINTN Index; - CHAR8 *Base; - CHAR8 *End; - CHAR8 *MaxEnd; - EFI_IMAGE_DATA_DIRECTORY *DirectoryEntry; - EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *DebugEntry; - UINTN Size; - UINT32 TempDebugEntryRva; - - // - // 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 = PeCoffLoader64GetImageInfo ( - This, - &CheckContext - ); - if (EFI_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 EFI_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 == TRUE) { - // - // 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 EFI_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 EFI_INVALID_PARAMETER; - } - } - - // - // Make sure the allocated space has the proper section alignment - // - if ((ImageContext->ImageAddress & (CheckContext.SectionAlignment - 1)) != 0) { - ImageContext->ImageError = IMAGE_ERROR_INVALID_SECTION_ALIGNMENT; - return EFI_INVALID_PARAMETER; - } - - // - // Read the entire PE/COFF header into memory - // - Status = ImageContext->ImageRead ( - ImageContext->Handle, - 0, - &ImageContext->SizeOfHeaders, - (VOID *)(UINTN)ImageContext->ImageAddress - ); - if (EFI_ERROR(Status)) { - ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ; - return EFI_LOAD_ERROR; - } - - PeHdr = (EFI_IMAGE_NT_HEADERS64 *) - ((UINTN)ImageContext->ImageAddress + ImageContext->PeCoffHeaderOffset); - - // - // Load each section of the image - // - FirstSection = (EFI_IMAGE_SECTION_HEADER *) ( - (UINTN)ImageContext->ImageAddress + - ImageContext->PeCoffHeaderOffset + - sizeof(UINT32) + - sizeof(EFI_IMAGE_FILE_HEADER) + - PeHdr->FileHeader.SizeOfOptionalHeader - ); - - Section = FirstSection; - for ( Index=0, MaxEnd = NULL; - Index < PeHdr->FileHeader.NumberOfSections; - Index += 1) { - - // - // Compute sections address - // - Base = PeCoffLoader64ImageAddress (ImageContext, Section->VirtualAddress); - End = PeCoffLoader64ImageAddress ( - ImageContext, - Section->VirtualAddress + Section->Misc.VirtualSize - 1); - if (End > MaxEnd) { - MaxEnd = End; - } - // - // If the base start or end address resolved to 0, then fail. - // - if (!Base || !End) { - ImageContext->ImageError = IMAGE_ERROR_SECTION_NOT_LOADED; - return EFI_LOAD_ERROR; - } - - // - // Read the section, we can resume the length of PE image can't - // exceed the max 32bit integer - // - Size = (UINTN) Section->Misc.VirtualSize; - if ((Size == 0) || (Size > Section->SizeOfRawData)) { - Size = (UINTN) Section->SizeOfRawData; - } - if (Section->SizeOfRawData) { - Status = ImageContext->ImageRead ( - ImageContext->Handle, - Section->PointerToRawData, - &Size, - Base); - if (EFI_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 - (UINTN)Size); - } - - // - // Next Section - // - Section += 1; - } - - // - // Get image's entry point - // - ImageContext->EntryPoint = - (EFI_PHYSICAL_ADDRESS) (UINTN) PeCoffLoader64ImageAddress ( - ImageContext, - PeHdr->OptionalHeader.AddressOfEntryPoint - ); - - // - // 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 (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; - } - // - // 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) { - DebugEntry = PeCoffLoader64ImageAddress ( - ImageContext, - ImageContext->DebugDirectoryEntryRva - ); - 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) { - ImageContext->CodeView = PeCoffLoader64ImageAddress (ImageContext, TempDebugEntryRva); - if (ImageContext->CodeView == NULL) { - ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ; - return EFI_LOAD_ERROR; - } - - if (DebugEntry->RVA == 0) { - Size = (UINTN) DebugEntry->SizeOfData; - Status = ImageContext->ImageRead ( - ImageContext->Handle, - DebugEntry->FileOffset, - &Size, - ImageContext->CodeView - ); - if (EFI_ERROR(Status)) { - ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ; - return EFI_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; -} - -EFI_STATUS -EFIAPI -PeCoffLoader64UnloadImage ( - IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, - IN PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext - ) -/*++ - -Routine Description: - Unload of images is not supported - -Arguments: - ImageContext - The image to unload - -Returns: - EFI_SUCCESS - ---*/ -{ - return EFI_SUCCESS; -} - -EFI_PEI_PE_COFF_LOADER_PROTOCOL * -EFIAPI -GetPeCoffLoaderProtocol ( - ) -{ - return &mPeCoffLoaderX64; -} - - +/*++ + +Copyright (c) 2006, 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: + + EdkPeCoffLoaderX64.c + +Abstract: + + Wrap the Base PE/COFF loader with the PE COFF Protocol + + +--*/ + +#define IMAGE_64_MACHINE_TYPE_SUPPORTED(Machine) \ + ((Machine) == EFI_IMAGE_MACHINE_IA32 || \ + (Machine) == EFI_IMAGE_MACHINE_X64 || \ + (Machine) == EFI_IMAGE_MACHINE_EBC) + +STATIC +EFI_STATUS +PeCoffLoader64GetPeHeader ( + IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext, + OUT EFI_IMAGE_NT_HEADERS64 *PeHdr + ); + +STATIC +EFI_STATUS +PeCoffLoader64CheckImageType ( + IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext, + IN EFI_IMAGE_NT_HEADERS64 *PeHdr + ); + +STATIC +VOID * +PeCoffLoader64ImageAddress ( + IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext, + IN UINTN Address + ); + +EFI_STATUS +EFIAPI +PeCoffLoader64GetImageInfo ( + IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, + IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext + ); + +EFI_STATUS +EFIAPI +PeCoffLoader64RelocateImage ( + IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, + IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext + ); + +EFI_STATUS +EFIAPI +PeCoffLoader64LoadImage ( + IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, + IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext + ); + +EFI_STATUS +EFIAPI +PeCoffLoader64UnloadImage ( + IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, + IN PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext + ); + +EFI_STATUS +PeCoffLoader64RelocateImageEx ( + IN UINT16 *Reloc, + IN OUT CHAR8 *Fixup, + IN OUT CHAR8 **FixupData, + IN UINT64 Adjust + ); + +EFI_PEI_PE_COFF_LOADER_PROTOCOL mPeCoffLoaderX64 = { + PeCoffLoader64GetImageInfo, + PeCoffLoader64LoadImage, + PeCoffLoader64RelocateImage, + PeCoffLoader64UnloadImage +}; + +STATIC +EFI_STATUS +PeCoffLoader64GetPeHeader ( + IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext, + OUT EFI_IMAGE_NT_HEADERS64 *PeHdr + ) +/*++ + +Routine Description: + Retrieves the PE Header from a PE/COFF image + +Arguments: + ImageContext - The context of the image being loaded + PeHdr - The buffer in which to return the PE header + +Returns: + EFI_SUCCESS if the PE Header is read, + Otherwise, the error status from reading the PE/COFF image using the ImageRead function. + +--*/ +{ + EFI_STATUS Status; + EFI_IMAGE_DOS_HEADER DosHdr; + UINTN Size; + + // + // Read the DOS image headers + // + Size = sizeof (EFI_IMAGE_DOS_HEADER); + Status = ImageContext->ImageRead ( + ImageContext->Handle, + 0, + &Size, + &DosHdr + ); + if (EFI_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_HEADERS64); + Status = ImageContext->ImageRead ( + ImageContext->Handle, + ImageContext->PeCoffHeaderOffset, + &Size, + PeHdr + ); + if (EFI_ERROR (Status)) { + ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ; + return Status; + } + + return EFI_SUCCESS; +} + +static +EFI_STATUS +PeCoffLoader64CheckImageType ( + IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext, + IN EFI_IMAGE_NT_HEADERS64 *PeHdr + ) +/*++ + +Routine Description: + Checks the PE header of a PE/COFF 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 + +Returns: + EFI_SUCCESS if the PE/COFF image is supported + EFI_UNSUPPORTED of the PE/COFF image is not supported. + +--*/ +{ + // + // Check the PE/COFF Header SIgnature + // + if (PeHdr->Signature != EFI_IMAGE_NT_SIGNATURE) { + ImageContext->ImageError = IMAGE_ERROR_INVALID_PE_HEADER_SIGNATURE; + return EFI_UNSUPPORTED; + } + + // + // 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. + // + ImageContext->Machine = PeHdr->FileHeader.Machine; + if (!(IMAGE_64_MACHINE_TYPE_SUPPORTED (ImageContext->Machine))) { + ImageContext->ImageError = IMAGE_ERROR_INVALID_MACHINE_TYPE; + return EFI_UNSUPPORTED; + } + + // + // See if the image type is supported. We support EFI Applications, + // EFI Boot Service Drivers, and EFI Runtime Drivers. + // + ImageContext->ImageType = PeHdr->OptionalHeader.Subsystem; + switch (ImageContext->ImageType) { + + case EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION: + ImageContext->ImageCodeMemoryType = EfiLoaderCode; + ImageContext->ImageDataMemoryType = EfiLoaderData; + break; + + case EFI_IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER: + ImageContext->ImageCodeMemoryType = EfiBootServicesCode; + ImageContext->ImageDataMemoryType = EfiBootServicesData; + break; + + case EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER: + case EFI_IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER: + ImageContext->ImageCodeMemoryType = EfiRuntimeServicesCode; + ImageContext->ImageDataMemoryType = EfiRuntimeServicesData; + break; + + default: + ImageContext->ImageError = IMAGE_ERROR_INVALID_SUBSYSTEM; + return EFI_UNSUPPORTED; + } + + return EFI_SUCCESS; +} + +EFI_STATUS +EFIAPI +PeCoffLoader64GetImageInfo ( + IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, + IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext + ) +/*++ + +Routine Description: + Retrieves information on a PE/COFF image + +Arguments: + ImageContext - The context of the image being loaded + PeHdr - The buffer in which to return the PE header + +Returns: + EFI_SUCCESS if the information on the PE/COFF image was collected. + EFI_UNSUPPORTED of the PE/COFF image is not supported. + Otherwise, the error status from reading the PE/COFF image using the + ImageContext->ImageRead() function + +--*/ +{ + EFI_STATUS Status; + EFI_IMAGE_NT_HEADERS64 PeHdr; + 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 EFI_INVALID_PARAMETER; + } + + // + // Assume success + // + ImageContext->ImageError = IMAGE_ERROR_SUCCESS; + + Status = PeCoffLoader64GetPeHeader (ImageContext, &PeHdr); + if (EFI_ERROR (Status)) { + return Status; + } + + // + // Verify machine type + // + Status = PeCoffLoader64CheckImageType (ImageContext, &PeHdr); + if (EFI_ERROR(Status)) { + return Status; + } + + // + // Retrieve the base address of the image + // + ImageContext->ImageAddress = PeHdr.OptionalHeader.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 (PeHdr.FileHeader.Characteristics & EFI_IMAGE_FILE_RELOCS_STRIPPED) { + ImageContext->RelocationsStripped = TRUE; + } else { + ImageContext->RelocationsStripped = FALSE; + } + + 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 += 1) { + // + // Read section header from file + // + Size = sizeof (EFI_IMAGE_SECTION_HEADER); + Status = ImageContext->ImageRead ( + ImageContext->Handle, + SectionHeaderOffset, + &Size, + &SectionHeader + ); + if (EFI_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 (EFI_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 EFI_SUCCESS; + } + } + } + } + return EFI_SUCCESS; +} + +static +VOID * +PeCoffLoader64ImageAddress ( + 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); +} + +EFI_STATUS +EFIAPI +PeCoffLoader64RelocateImage ( + IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, + IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext + ) +/*++ + +Routine Description: + Relocates a PE/COFF image in memory + +Arguments: + ImageContext - Contains information on the loaded image to relocate + +Returns: + EFI_SUCCESS if the PE/COFF image was relocated + EFI_LOAD_ERROR if the image is not a valid PE/COFF image + +--*/ +{ + EFI_STATUS Status; + EFI_IMAGE_NT_HEADERS64 *PeHdr; + EFI_IMAGE_DATA_DIRECTORY *RelocDir; + IN 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; + EFI_PHYSICAL_ADDRESS BaseAddress; + + + // + // Assume success + // + ImageContext->ImageError = IMAGE_ERROR_SUCCESS; + + // + // If there are no relocation entries, then we are done + // + if (ImageContext->RelocationsStripped) { + return EFI_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; + } + PeHdr = (EFI_IMAGE_NT_HEADERS64 *)((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 = PeCoffLoader64ImageAddress (ImageContext, RelocDir->VirtualAddress); + RelocBaseEnd = PeCoffLoader64ImageAddress ( + ImageContext, + RelocDir->VirtualAddress + RelocDir->Size - 1 + ); +} else { + // + // Set base and end to bypass processing below. + // + RelocBase = RelocBaseEnd = 0; + } + // + // 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); + FixupBase = PeCoffLoader64ImageAddress (ImageContext, RelocBase->VirtualAddress); + if ((CHAR8 *) RelocEnd < (CHAR8 *)((UINTN)ImageContext->ImageAddress) || + (CHAR8 *) RelocEnd > (CHAR8 *)((UINTN)ImageContext->ImageAddress + + (UINTN)ImageContext->ImageSize)) { + ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION; + return EFI_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 << 16) + (UINT16) Adjust); + 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 + // PeCoffLoader64RelocateImageEx() returns if it does not recognize + // the relocation type. + // + ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION; + return EFI_UNSUPPORTED; + default: + Status = PeCoffLoader64RelocateImageEx (Reloc, Fixup, &FixupData, Adjust); + if (EFI_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 EFI_SUCCESS; +} + + +EFI_STATUS +PeCoffLoader64RelocateImageEx ( + IN UINT16 *Reloc, + IN OUT CHAR8 *Fixup, + IN OUT CHAR8 **FixupData, + IN UINT64 Adjust + ) +/*++ + +Routine Description: + Performs an IA-32 specific relocation fixup + +Arguments: + Reloc - Pointer to the relocation record + Fixup - Pointer to the address to fix up + FixupData - Pointer to a buffer to log the fixups + Adjust - The offset to adjust the fixup + +Returns: + None + +--*/ +{ + UINT64 *F64; + + switch ((*Reloc) >> 12) { + + case EFI_IMAGE_REL_BASED_DIR64: + F64 = (UINT64 *) Fixup; + *F64 = *F64 + (UINT64) Adjust; + if (*FixupData != NULL) { + *FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64)); + *(UINT64 *)(*FixupData) = *F64; + *FixupData = *FixupData + sizeof(UINT64); + } + break; + + default: + return EFI_UNSUPPORTED; + } + + return EFI_SUCCESS; +} + + + +EFI_STATUS +EFIAPI +PeCoffLoader64LoadImage ( + IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, + IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext + ) +/*++ + +Routine Description: + Loads a PE/COFF image into memory + +Arguments: + ImageContext - Contains information on image to load into memory + +Returns: + EFI_SUCCESS if the PE/COFF image was loaded + EFI_BUFFER_TOO_SMALL if the caller did not provide a large enough buffer + EFI_LOAD_ERROR if the image is a runtime driver with no relocations + EFI_INVALID_PARAMETER if the image address is invalid + +--*/ +{ + EFI_STATUS Status; + EFI_IMAGE_NT_HEADERS64 *PeHdr; + PE_COFF_LOADER_IMAGE_CONTEXT CheckContext; + EFI_IMAGE_SECTION_HEADER *FirstSection; + EFI_IMAGE_SECTION_HEADER *Section; + UINTN Index; + CHAR8 *Base; + CHAR8 *End; + CHAR8 *MaxEnd; + EFI_IMAGE_DATA_DIRECTORY *DirectoryEntry; + EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *DebugEntry; + UINTN Size; + UINT32 TempDebugEntryRva; + + // + // 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 = PeCoffLoader64GetImageInfo ( + This, + &CheckContext + ); + if (EFI_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 EFI_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 == TRUE) { + // + // 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 EFI_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 EFI_INVALID_PARAMETER; + } + } + + // + // Make sure the allocated space has the proper section alignment + // + if ((ImageContext->ImageAddress & (CheckContext.SectionAlignment - 1)) != 0) { + ImageContext->ImageError = IMAGE_ERROR_INVALID_SECTION_ALIGNMENT; + return EFI_INVALID_PARAMETER; + } + + // + // Read the entire PE/COFF header into memory + // + Status = ImageContext->ImageRead ( + ImageContext->Handle, + 0, + &ImageContext->SizeOfHeaders, + (VOID *)(UINTN)ImageContext->ImageAddress + ); + if (EFI_ERROR(Status)) { + ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ; + return EFI_LOAD_ERROR; + } + + PeHdr = (EFI_IMAGE_NT_HEADERS64 *) + ((UINTN)ImageContext->ImageAddress + ImageContext->PeCoffHeaderOffset); + + // + // Load each section of the image + // + FirstSection = (EFI_IMAGE_SECTION_HEADER *) ( + (UINTN)ImageContext->ImageAddress + + ImageContext->PeCoffHeaderOffset + + sizeof(UINT32) + + sizeof(EFI_IMAGE_FILE_HEADER) + + PeHdr->FileHeader.SizeOfOptionalHeader + ); + + Section = FirstSection; + for ( Index=0, MaxEnd = NULL; + Index < PeHdr->FileHeader.NumberOfSections; + Index += 1) { + + // + // Compute sections address + // + Base = PeCoffLoader64ImageAddress (ImageContext, Section->VirtualAddress); + End = PeCoffLoader64ImageAddress ( + ImageContext, + Section->VirtualAddress + Section->Misc.VirtualSize - 1); + if (End > MaxEnd) { + MaxEnd = End; + } + // + // If the base start or end address resolved to 0, then fail. + // + if (!Base || !End) { + ImageContext->ImageError = IMAGE_ERROR_SECTION_NOT_LOADED; + return EFI_LOAD_ERROR; + } + + // + // Read the section, we can resume the length of PE image can't + // exceed the max 32bit integer + // + Size = (UINTN) Section->Misc.VirtualSize; + if ((Size == 0) || (Size > Section->SizeOfRawData)) { + Size = (UINTN) Section->SizeOfRawData; + } + if (Section->SizeOfRawData) { + Status = ImageContext->ImageRead ( + ImageContext->Handle, + Section->PointerToRawData, + &Size, + Base); + if (EFI_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 - (UINTN)Size); + } + + // + // Next Section + // + Section += 1; + } + + // + // Get image's entry point + // + ImageContext->EntryPoint = + (EFI_PHYSICAL_ADDRESS) (UINTN) PeCoffLoader64ImageAddress ( + ImageContext, + PeHdr->OptionalHeader.AddressOfEntryPoint + ); + + // + // 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 (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; + } + // + // 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) { + DebugEntry = PeCoffLoader64ImageAddress ( + ImageContext, + ImageContext->DebugDirectoryEntryRva + ); + 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) { + ImageContext->CodeView = PeCoffLoader64ImageAddress (ImageContext, TempDebugEntryRva); + if (ImageContext->CodeView == NULL) { + ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ; + return EFI_LOAD_ERROR; + } + + if (DebugEntry->RVA == 0) { + Size = (UINTN) DebugEntry->SizeOfData; + Status = ImageContext->ImageRead ( + ImageContext->Handle, + DebugEntry->FileOffset, + &Size, + ImageContext->CodeView + ); + if (EFI_ERROR(Status)) { + ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ; + return EFI_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; +} + +EFI_STATUS +EFIAPI +PeCoffLoader64UnloadImage ( + IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *This, + IN PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext + ) +/*++ + +Routine Description: + Unload of images is not supported + +Arguments: + ImageContext - The image to unload + +Returns: + EFI_SUCCESS + +--*/ +{ + return EFI_SUCCESS; +} + +EFI_PEI_PE_COFF_LOADER_PROTOCOL * +EFIAPI +GetPeCoffLoaderProtocol ( + ) +{ + return &mPeCoffLoaderX64; +} + + -- 2.39.2