mirror of https://github.com/acidanthera/audk.git
393 lines
18 KiB
C
393 lines
18 KiB
C
/** @file
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Provides services to load and relocate a PE/COFF image.
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The PE/COFF Loader Library abstracts the implementation of a PE/COFF loader for
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IA-32, x86, IPF, and EBC processor types. The library functions are memory-based
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and can be ported easily to any environment.
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Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __BASE_PE_COFF_LIB_H__
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#define __BASE_PE_COFF_LIB_H__
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#include <IndustryStandard/PeImage.h>
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//
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// Return status codes from the PE/COFF Loader services
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//
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#define IMAGE_ERROR_SUCCESS 0
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#define IMAGE_ERROR_IMAGE_READ 1
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#define IMAGE_ERROR_INVALID_PE_HEADER_SIGNATURE 2
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#define IMAGE_ERROR_INVALID_MACHINE_TYPE 3
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#define IMAGE_ERROR_INVALID_SUBSYSTEM 4
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#define IMAGE_ERROR_INVALID_IMAGE_ADDRESS 5
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#define IMAGE_ERROR_INVALID_IMAGE_SIZE 6
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#define IMAGE_ERROR_INVALID_SECTION_ALIGNMENT 7
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#define IMAGE_ERROR_SECTION_NOT_LOADED 8
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#define IMAGE_ERROR_FAILED_RELOCATION 9
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#define IMAGE_ERROR_FAILED_ICACHE_FLUSH 10
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#define IMAGE_ERROR_UNSUPPORTED 11
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/**
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Reads contents of a PE/COFF image.
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A function of this type reads contents of the PE/COFF image specified by FileHandle. The read
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operation copies ReadSize bytes from the PE/COFF image starting at byte offset FileOffset into
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the buffer specified by Buffer. The size of the buffer actually read is returned in ReadSize.
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If FileOffset specifies an offset past the end of the PE/COFF image, a ReadSize of 0 is returned.
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A function of this type must be registered in the ImageRead field of a PE_COFF_LOADER_IMAGE_CONTEXT
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structure for the PE/COFF Loader Library service to function correctly. This function abstracts access
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to a PE/COFF image so it can be implemented in an environment specific manner. For example, SEC and PEI
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environments may access memory directly to read the contents of a PE/COFF image, and DXE or UEFI
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environments may require protocol services to read the contents of PE/COFF image
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stored on FLASH, disk, or network devices.
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If FileHandle is not a valid handle, then ASSERT().
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If ReadSize is NULL, then ASSERT().
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If Buffer is NULL, then ASSERT().
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@param FileHandle Pointer to the file handle to read the PE/COFF image.
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@param FileOffset Offset into the PE/COFF image to begin the read operation.
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@param ReadSize On input, the size in bytes of the requested read operation.
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On output, the number of bytes actually read.
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@param Buffer Output buffer that contains the data read from the PE/COFF image.
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@retval RETURN_SUCCESS The specified portion of the PE/COFF image was
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read and the size return in ReadSize.
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@retval RETURN_DEVICE_ERROR The specified portion of the PE/COFF image
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could not be read due to a device error.
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**/
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typedef
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RETURN_STATUS
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(EFIAPI *PE_COFF_LOADER_READ_FILE)(
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IN VOID *FileHandle,
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IN UINTN FileOffset,
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IN OUT UINTN *ReadSize,
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OUT VOID *Buffer
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);
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///
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/// The context structure used while PE/COFF image is being loaded and relocated.
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///
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typedef struct {
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///
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/// Set by PeCoffLoaderGetImageInfo() to the ImageBase in the PE/COFF header.
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///
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PHYSICAL_ADDRESS ImageAddress;
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///
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/// Set by PeCoffLoaderGetImageInfo() to the SizeOfImage in the PE/COFF header.
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/// Image size includes the size of Debug Entry if it is present.
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///
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UINT64 ImageSize;
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///
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/// Is set to zero by PeCoffLoaderGetImageInfo(). If DestinationAddress is non-zero,
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/// PeCoffLoaderRelocateImage() will relocate the image using this base address.
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/// If the DestinationAddress is zero, the ImageAddress will be used as the base
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/// address of relocation.
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///
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PHYSICAL_ADDRESS DestinationAddress;
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///
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/// PeCoffLoaderLoadImage() sets EntryPoint to to the entry point of the PE/COFF image.
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///
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PHYSICAL_ADDRESS EntryPoint;
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///
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/// Passed in by the caller to PeCoffLoaderGetImageInfo() and PeCoffLoaderLoadImage()
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/// to abstract accessing the image from the library.
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///
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PE_COFF_LOADER_READ_FILE ImageRead;
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///
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/// Used as the FileHandle passed into the ImageRead function when it's called.
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///
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VOID *Handle;
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///
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/// Caller allocated buffer of size FixupDataSize that can be optionally allocated
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/// prior to calling PeCoffLoaderRelocateImage().
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/// This buffer is filled with the information used to fix up the image.
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/// The fixups have been applied to the image and this entry is just for information.
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///
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VOID *FixupData;
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///
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/// Set by PeCoffLoaderGetImageInfo() to the Section Alignment in the PE/COFF header.
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/// If the image is a TE image, then this field is set to 0.
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///
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UINT32 SectionAlignment;
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///
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/// Set by PeCoffLoaderGetImageInfo() to offset to the PE/COFF header.
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/// If the PE/COFF image does not start with a DOS header, this value is zero.
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/// Otherwise, it's the offset to the PE/COFF header.
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///
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UINT32 PeCoffHeaderOffset;
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///
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/// Set by PeCoffLoaderGetImageInfo() to the Relative Virtual Address of the debug directory,
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/// if it exists in the image
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///
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UINT32 DebugDirectoryEntryRva;
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///
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/// Set by PeCoffLoaderLoadImage() to CodeView area of the PE/COFF Debug directory.
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///
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VOID *CodeView;
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///
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/// Set by PeCoffLoaderLoadImage() to point to the PDB entry contained in the CodeView area.
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/// The PdbPointer points to the filename of the PDB file used for source-level debug of
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/// the image by a debugger.
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///
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CHAR8 *PdbPointer;
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///
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/// Is set by PeCoffLoaderGetImageInfo() to the Section Alignment in the PE/COFF header.
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///
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UINTN SizeOfHeaders;
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///
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/// Not used by this library class. Other library classes that layer on top of this library
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/// class fill in this value as part of their GetImageInfo call.
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/// This allows the caller of the library to know what type of memory needs to be allocated
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/// to load and relocate the image.
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///
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UINT32 ImageCodeMemoryType;
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///
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/// Not used by this library class. Other library classes that layer on top of this library
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/// class fill in this value as part of their GetImageInfo call.
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/// This allows the caller of the library to know what type of memory needs to be allocated
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/// to load and relocate the image.
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///
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UINT32 ImageDataMemoryType;
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///
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/// Set by any of the library functions if they encounter an error.
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///
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UINT32 ImageError;
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///
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/// Set by PeCoffLoaderLoadImage() to indicate the size of FixupData that the caller must
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/// allocate before calling PeCoffLoaderRelocateImage().
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///
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UINTN FixupDataSize;
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///
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/// Set by PeCoffLoaderGetImageInfo() to the machine type stored in the PE/COFF header.
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///
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UINT16 Machine;
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///
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/// Set by PeCoffLoaderGetImageInfo() to the subsystem type stored in the PE/COFF header.
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///
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UINT16 ImageType;
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///
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/// Set by PeCoffLoaderGetImageInfo() to TRUE if the PE/COFF image does not contain
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/// relocation information.
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///
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BOOLEAN RelocationsStripped;
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///
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/// Set by PeCoffLoaderGetImageInfo() to TRUE if the image is a TE image.
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/// For a definition of the TE Image format, see the Platform Initialization Pre-EFI
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/// Initialization Core Interface Specification.
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///
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BOOLEAN IsTeImage;
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///
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/// Set by PeCoffLoaderLoadImage() to the HII resource offset
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/// if the image contains a custom PE/COFF resource with the type 'HII'.
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/// Otherwise, the entry remains to be 0.
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///
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PHYSICAL_ADDRESS HiiResourceData;
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///
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/// Private storage for implementation specific data.
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///
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UINT64 Context;
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} PE_COFF_LOADER_IMAGE_CONTEXT;
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/**
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Retrieves information about a PE/COFF image.
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Computes the PeCoffHeaderOffset, IsTeImage, ImageType, ImageAddress, ImageSize,
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DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, and
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DebugDirectoryEntryRva fields of the ImageContext structure.
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If ImageContext is NULL, then return RETURN_INVALID_PARAMETER.
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If the PE/COFF image accessed through the ImageRead service in the ImageContext
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structure is not a supported PE/COFF image type, then return RETURN_UNSUPPORTED.
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If any errors occur while computing the fields of ImageContext,
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then the error status is returned in the ImageError field of ImageContext.
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If the image is a TE image, then SectionAlignment is set to 0.
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The ImageRead and Handle fields of ImageContext structure must be valid prior
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to invoking this service.
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@param ImageContext The pointer to the image context structure that
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describes the PE/COFF image that needs to be
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examined by this function.
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@retval RETURN_SUCCESS The information on the PE/COFF image was collected.
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@retval RETURN_INVALID_PARAMETER ImageContext is NULL.
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@retval RETURN_UNSUPPORTED The PE/COFF image is not supported.
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**/
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RETURN_STATUS
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EFIAPI
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PeCoffLoaderGetImageInfo (
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IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
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);
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/**
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Applies relocation fixups to a PE/COFF image that was loaded with PeCoffLoaderLoadImage().
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If the DestinationAddress field of ImageContext is 0, then use the ImageAddress field of
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ImageContext as the relocation base address. Otherwise, use the DestinationAddress field
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of ImageContext as the relocation base address. The caller must allocate the relocation
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fixup log buffer and fill in the FixupData field of ImageContext prior to calling this function.
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The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine, ImageType, ImageAddress,
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ImageSize, DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders,
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DebugDirectoryEntryRva, EntryPoint, FixupDataSize, CodeView, PdbPointer, and FixupData of
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the ImageContext structure must be valid prior to invoking this service.
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If ImageContext is NULL, then ASSERT().
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Note that if the platform does not maintain coherency between the instruction cache(s) and the data
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cache(s) in hardware, then the caller is responsible for performing cache maintenance operations
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prior to transferring control to a PE/COFF image that is loaded using this library.
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@param ImageContext The pointer to the image context structure that describes the PE/COFF
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image that is being relocated.
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@retval RETURN_SUCCESS The PE/COFF image was relocated.
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Extended status information is in the ImageError field of ImageContext.
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@retval RETURN_LOAD_ERROR The image in not a valid PE/COFF image.
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Extended status information is in the ImageError field of ImageContext.
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@retval RETURN_UNSUPPORTED A relocation record type is not supported.
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Extended status information is in the ImageError field of ImageContext.
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**/
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RETURN_STATUS
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EFIAPI
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PeCoffLoaderRelocateImage (
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IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
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);
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/**
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Loads a PE/COFF image into memory.
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Loads the PE/COFF image accessed through the ImageRead service of ImageContext into the buffer
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specified by the ImageAddress and ImageSize fields of ImageContext. The caller must allocate
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the load buffer and fill in the ImageAddress and ImageSize fields prior to calling this function.
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The EntryPoint, FixupDataSize, CodeView, PdbPointer and HiiResourceData fields of ImageContext are computed.
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The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine, ImageType, ImageAddress, ImageSize,
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DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, and DebugDirectoryEntryRva
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fields of the ImageContext structure must be valid prior to invoking this service.
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If ImageContext is NULL, then ASSERT().
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Note that if the platform does not maintain coherency between the instruction cache(s) and the data
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cache(s) in hardware, then the caller is responsible for performing cache maintenance operations
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prior to transferring control to a PE/COFF image that is loaded using this library.
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@param ImageContext The pointer to the image context structure that describes the PE/COFF
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image that is being loaded.
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@retval RETURN_SUCCESS The PE/COFF image was loaded into the buffer specified by
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the ImageAddress and ImageSize fields of ImageContext.
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Extended status information is in the ImageError field of ImageContext.
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@retval RETURN_BUFFER_TOO_SMALL The caller did not provide a large enough buffer.
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Extended status information is in the ImageError field of ImageContext.
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@retval RETURN_LOAD_ERROR The PE/COFF image is an EFI Runtime image with no relocations.
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Extended status information is in the ImageError field of ImageContext.
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@retval RETURN_INVALID_PARAMETER The image address is invalid.
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Extended status information is in the ImageError field of ImageContext.
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**/
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RETURN_STATUS
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EFIAPI
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PeCoffLoaderLoadImage (
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IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
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);
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/**
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Reads contents of a PE/COFF image from a buffer in system memory.
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This is the default implementation of a PE_COFF_LOADER_READ_FILE function
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that assumes FileHandle pointer to the beginning of a PE/COFF image.
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This function reads contents of the PE/COFF image that starts at the system memory
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address specified by FileHandle. The read operation copies ReadSize bytes from the
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PE/COFF image starting at byte offset FileOffset into the buffer specified by Buffer.
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The size of the buffer actually read is returned in ReadSize.
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If FileHandle is NULL, then ASSERT().
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If ReadSize is NULL, then ASSERT().
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If Buffer is NULL, then ASSERT().
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@param FileHandle The pointer to base of the input stream
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@param FileOffset Offset into the PE/COFF image to begin the read operation.
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@param ReadSize On input, the size in bytes of the requested read operation.
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On output, the number of bytes actually read.
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@param Buffer Output buffer that contains the data read from the PE/COFF image.
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@retval RETURN_SUCCESS The data is read from FileOffset from the Handle into
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the buffer.
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**/
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RETURN_STATUS
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EFIAPI
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PeCoffLoaderImageReadFromMemory (
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IN VOID *FileHandle,
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IN UINTN FileOffset,
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IN OUT UINTN *ReadSize,
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OUT VOID *Buffer
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);
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/**
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Reapply fixups on a fixed up PE32/PE32+ image to allow virtual calling at EFI
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runtime.
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This function reapplies relocation fixups to the PE/COFF image specified by ImageBase
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and ImageSize so the image will execute correctly when the PE/COFF image is mapped
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to the address specified by VirtualImageBase. RelocationData must be identical
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to the FiuxupData buffer from the PE_COFF_LOADER_IMAGE_CONTEXT structure
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after this PE/COFF image was relocated with PeCoffLoaderRelocateImage().
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Note that if the platform does not maintain coherency between the instruction cache(s) and the data
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cache(s) in hardware, then the caller is responsible for performing cache maintenance operations
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prior to transferring control to a PE/COFF image that is loaded using this library.
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@param ImageBase The base address of a PE/COFF image that has been loaded
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and relocated into system memory.
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@param VirtImageBase The request virtual address that the PE/COFF image is to
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be fixed up for.
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@param ImageSize The size, in bytes, of the PE/COFF image.
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@param RelocationData A pointer to the relocation data that was collected when the PE/COFF
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image was relocated using PeCoffLoaderRelocateImage().
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**/
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VOID
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EFIAPI
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PeCoffLoaderRelocateImageForRuntime (
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IN PHYSICAL_ADDRESS ImageBase,
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IN PHYSICAL_ADDRESS VirtImageBase,
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IN UINTN ImageSize,
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IN VOID *RelocationData
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);
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/**
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Unloads a loaded PE/COFF image from memory and releases its taken resource.
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Releases any environment specific resources that were allocated when the image
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specified by ImageContext was loaded using PeCoffLoaderLoadImage().
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For NT32 emulator, the PE/COFF image loaded by system needs to release.
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For real platform, the PE/COFF image loaded by Core doesn't needs to be unloaded,
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this function can simply return RETURN_SUCCESS.
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If ImageContext is NULL, then ASSERT().
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@param ImageContext Pointer to the image context structure that describes the PE/COFF
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image to be unloaded.
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@retval RETURN_SUCCESS The PE/COFF image was unloaded successfully.
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**/
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RETURN_STATUS
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EFIAPI
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PeCoffLoaderUnloadImage (
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IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
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);
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#endif
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