audk/EdkModulePkg/Core/Dxe/Image.h

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/*++
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:
Image.h
Abstract:
Revision History
--*/
#ifndef _IMAGE_H_
#define _IMAGE_H_
#define LOADED_IMAGE_PRIVATE_DATA_SIGNATURE EFI_SIGNATURE_32('l','d','r','i')
typedef struct {
UINTN Signature;
EFI_HANDLE Handle; // Image handle
UINTN Type; // Image type
BOOLEAN Started; // If entrypoint has been called
EFI_IMAGE_ENTRY_POINT EntryPoint; // The image's entry point
EFI_LOADED_IMAGE_PROTOCOL Info; // loaded image protocol
EFI_PHYSICAL_ADDRESS ImageBasePage; // Location in memory
UINTN NumberOfPages; // Number of pages
CHAR8 *FixupData; // Original fixup data
EFI_TPL Tpl; // Tpl of started image
EFI_STATUS Status; // Status returned by started image
UINTN ExitDataSize; // Size of ExitData from started image
VOID *ExitData; // Pointer to exit data from started image
VOID *JumpBuffer; // Pointer to pool allocation for context save/retore
BASE_LIBRARY_JUMP_BUFFER *JumpContext; // Pointer to buffer for context save/retore
UINT16 Machine; // Machine type from PE image
EFI_EBC_PROTOCOL *Ebc; // EBC Protocol pointer
EFI_RUNTIME_IMAGE_ENTRY *RuntimeData; // Runtime image list
PE_COFF_LOADER_IMAGE_CONTEXT ImageContext; // PeCoffLoader ImageContext
} LOADED_IMAGE_PRIVATE_DATA;
#define LOADED_IMAGE_PRIVATE_DATA_FROM_THIS(a) \
CR(a, LOADED_IMAGE_PRIVATE_DATA, Info, LOADED_IMAGE_PRIVATE_DATA_SIGNATURE)
#define LOAD_PE32_IMAGE_PRIVATE_DATA_SIGNATURE EFI_SIGNATURE_32('l','p','e','i')
typedef struct {
UINTN Signature;
EFI_HANDLE Handle; // Image handle
EFI_PE32_IMAGE_PROTOCOL Pe32Image;
} LOAD_PE32_IMAGE_PRIVATE_DATA;
#define LOAD_PE32_IMAGE_PRIVATE_DATA_FROM_THIS(a) \
CR(a, LOAD_PE32_IMAGE_PRIVATE_DATA, Pe32Image, LOAD_PE32_IMAGE_PRIVATE_DATA_SIGNATURE)
//
// Private Data Types
//
#define IMAGE_FILE_HANDLE_SIGNATURE EFI_SIGNATURE_32('i','m','g','f')
typedef struct {
UINTN Signature;
BOOLEAN FreeBuffer;
VOID *Source;
UINTN SourceSize;
} IMAGE_FILE_HANDLE;
//
// Abstractions for reading image contents
//
EFI_STATUS
CoreOpenImageFile (
IN BOOLEAN BootPolicy,
IN VOID *SourceBuffer OPTIONAL,
IN UINTN SourceSize,
IN OUT EFI_DEVICE_PATH_PROTOCOL *FilePath,
OUT EFI_HANDLE *DeviceHandle,
IN IMAGE_FILE_HANDLE *ImageFileHandle,
OUT UINT32 *AuthenticationStatus
)
/*++
Routine Description:
Opens a file for (simple) reading. The simple read abstraction
will access the file either from a memory copy, from a file
system interface, or from the load file interface.
Arguments:
BootPolicy - Policy for Open Image File.
SourceBuffer - Pointer to the memory location containing copy
of the image to be loaded.
SourceSize - The size in bytes of SourceBuffer.
FilePath - The specific file path from which the image is loaded
DeviceHandle - Pointer to the return device handle.
ImageFileHandle - Pointer to the image file handle.
AuthenticationStatus - Pointer to a caller-allocated UINT32 in which the authentication status is returned.
Returns:
A handle to access the file
--*/
;
EFI_STATUS
EFIAPI
CoreReadImageFile (
IN VOID *UserHandle,
IN UINTN Offset,
IN OUT UINTN *ReadSize,
OUT VOID *Buffer
)
/*++
Routine Description:
Read image file (specified by UserHandle) into user specified buffer with specified offset
and length.
Arguments:
UserHandle - Image file handle
Offset - Offset to the source file
ReadSize - For input, pointer of size to read;
For output, pointer of size actually read.
Buffer - Buffer to write into
Returns:
EFI_SUCCESS - Successfully read the specified part of file into buffer.
--*/
;
VOID
EFIAPI
CoreCloseImageFile (
IN IMAGE_FILE_HANDLE *ImageFileHandle
)
/*++
Routine Description:
A function out of date, should be removed.
Arguments:
ImageFileHandle - Handle of the file to close
Returns:
None
--*/
;
//
// Image processing worker functions
//
EFI_STATUS
CoreDevicePathToInterface (
IN EFI_GUID *Protocol,
IN OUT EFI_DEVICE_PATH_PROTOCOL **FilePath,
OUT VOID **Interface,
OUT EFI_HANDLE *Handle
)
/*++
Routine Description:
Search a handle to a device on a specified device path that supports a specified protocol,
interface of that protocol on that handle is another output.
Arguments:
Protocol - The protocol to search for
FilePath - The specified device path
Interface - Interface of the protocol on the handle
Handle - The handle to the device on the specified device path that supports the protocol.
Returns:
Status code.
--*/
;
EFI_STATUS
CoreLoadPeImage (
IN VOID *Pe32Handle,
IN LOADED_IMAGE_PRIVATE_DATA *Image,
IN EFI_PHYSICAL_ADDRESS DstBuffer OPTIONAL,
OUT EFI_PHYSICAL_ADDRESS *EntryPoint OPTIONAL,
IN UINT32 Attribute
)
/*++
Routine Description:
Loads, relocates, and invokes a PE/COFF image
Arguments:
Pe32Handle - The handle of PE32 image
Image - PE image to be loaded
DstBuffer - The buffer to store the image
EntryPoint - A pointer to the entry point
Attribute - The bit mask of attributes to set for the load PE image
Returns:
EFI_SUCCESS - The file was loaded, relocated, and invoked
EFI_OUT_OF_RESOURCES - There was not enough memory to load and relocate the PE/COFF file
EFI_INVALID_PARAMETER - Invalid parameter
EFI_BUFFER_TOO_SMALL - Buffer for image is too small
--*/
;
LOADED_IMAGE_PRIVATE_DATA *
CoreLoadedImageInfo (
IN EFI_HANDLE ImageHandle
)
/*++
Routine Description:
TODO: Add function description
Arguments:
ImageHandle - TODO: add argument description
Returns:
TODO: add return values
--*/
;
VOID
CoreUnloadAndCloseImage (
IN LOADED_IMAGE_PRIVATE_DATA *Image,
IN BOOLEAN FreePage
)
/*++
Routine Description:
Unloads EFI image from memory.
Arguments:
Image - EFI image
FreePage - Free allocated pages
Returns:
None
--*/
;
//
// Exported Image functions
//
EFI_STATUS
EFIAPI
CoreLoadImageEx (
IN EFI_PE32_IMAGE_PROTOCOL *This,
IN EFI_HANDLE ParentImageHandle,
IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
IN VOID *SourceBuffer OPTIONAL,
IN UINTN SourceSize,
IN EFI_PHYSICAL_ADDRESS DstBuffer OPTIONAL,
OUT UINTN *NumberOfPages OPTIONAL,
OUT EFI_HANDLE *ImageHandle,
OUT EFI_PHYSICAL_ADDRESS *EntryPoint OPTIONAL,
IN UINT32 Attribute
)
/*++
Routine Description:
Loads an EFI image into memory and returns a handle to the image with extended parameters.
Arguments:
ParentImageHandle - The caller's image handle.
FilePath - The specific file path from which the image is loaded.
SourceBuffer - If not NULL, a pointer to the memory location containing a copy of
the image to be loaded.
SourceSize - The size in bytes of SourceBuffer.
DstBuffer - The buffer to store the image.
NumberOfPages - For input, specifies the space size of the image by caller if not NULL.
For output, specifies the actual space size needed.
ImageHandle - Image handle for output.
EntryPoint - Image entry point for output.
Attribute - The bit mask of attributes to set for the load PE image.
Returns:
EFI_SUCCESS - The image was loaded into memory.
EFI_NOT_FOUND - The FilePath was not found.
EFI_INVALID_PARAMETER - One of the parameters has an invalid value.
EFI_UNSUPPORTED - The image type is not supported, or the device path cannot be
parsed to locate the proper protocol for loading the file.
EFI_OUT_OF_RESOURCES - Image was not loaded due to insufficient resources.
--*/
;
EFI_STATUS
EFIAPI
CoreUnloadImageEx (
IN EFI_PE32_IMAGE_PROTOCOL *This,
IN EFI_HANDLE ImageHandle
)
/*++
Routine Description:
Unload the specified image.
Arguments:
This - Indicates the calling context.
ImageHandle - The specified image handle.
Returns:
EFI_INVALID_PARAMETER - Image handle is NULL.
EFI_UNSUPPORTED - Attempt to unload an unsupported image.
EFI_SUCCESS - Image successfully unloaded.
--*/
;
#endif