MdePkg/Include/Library/PeCoffLib.h

   1 /** @file
   2   Provides services to load and relocate a PE/COFF image.
   3
   4   The PE/COFF Loader Library abstracts the implementation of a PE/COFF loader for
   5   IA-32, x86, IPF, and EBC processor types. The library functions are memory-based
   6   and can be ported easily to any environment.
   7
   8 Copyright (c) 2006 - 2008, Intel Corporation
   9 All rights reserved. This program and the accompanying materials
  10 are licensed and made available under the terms and conditions of the BSD License
  11 which accompanies this distribution.  The full text of the license may be found at
  12 http://opensource.org/licenses/bsd-license.php
  13
  14 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  15 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  16
  17 **/
  18
  19 #ifndef __BASE_PE_COFF_LIB_H__
  20 #define __BASE_PE_COFF_LIB_H__
  21
  22 #include <IndustryStandard/PeImage.h>
  23 //
  24 // Return status codes from the PE/COFF Loader services
  25 //
  26 #define IMAGE_ERROR_SUCCESS                      0
  27 #define IMAGE_ERROR_IMAGE_READ                   1
  28 #define IMAGE_ERROR_INVALID_PE_HEADER_SIGNATURE  2
  29 #define IMAGE_ERROR_INVALID_MACHINE_TYPE         3
  30 #define IMAGE_ERROR_INVALID_SUBSYSTEM            4
  31 #define IMAGE_ERROR_INVALID_IMAGE_ADDRESS        5
  32 #define IMAGE_ERROR_INVALID_IMAGE_SIZE           6
  33 #define IMAGE_ERROR_INVALID_SECTION_ALIGNMENT    7
  34 #define IMAGE_ERROR_SECTION_NOT_LOADED           8
  35 #define IMAGE_ERROR_FAILED_RELOCATION            9
  36 #define IMAGE_ERROR_FAILED_ICACHE_FLUSH          10
  37
  38 /**
  39   Reads contents of a PE/COFF image.
  40
  41   A function of this type reads contents of the PE/COFF image specified by FileHandle. The read
  42   operation copies ReadSize bytes from the PE/COFF image starting at byte offset FileOffset into
  43   the buffer specified by Buffer. The size of the buffer actually read is returned in ReadSize.
  44   If FileOffset specifies an offset past the end of the PE/COFF image, a ReadSize of 0 is returned.
  45   A function of this type must be registered in the ImageRead field of a PE_COFF_LOADER_IMAGE_CONTEXT
  46   structure for the PE/COFF Loader Library service to function correctly.  This function abstracts access
  47   to a PE/COFF image so it can be implemented in an environment specific manner.  For example, SEC and PEI
  48   environments may access memory directly to read the contents of a PE/COFF image, and DXE or UEFI
  49   environments may require protocol services to read the contents of PE/COFF image
  50   stored on FLASH, disk, or network devices.
  51
  52   If FileHandle is not a valid handle, then ASSERT().
  53   If ReadSize is NULL, then ASSERT().
  54   If Buffer is NULL, then ASSERT().
  55
  56   @param  FileHandle      Pointer to the file handle to read the PE/COFF image.
  57   @param  FileOffset      Offset into the PE/COFF image to begin the read operation.
  58   @param  ReadSize        On input, the size in bytes of the requested read operation.
  59                           On output, the number of bytes actually read.
  60   @param  Buffer          Output buffer that contains the data read from the PE/COFF image.
  61
  62   @retval RETURN_SUCCESS            The specified portion of the PE/COFF image was read and the size
  63   @retval RETURN_DEVICE_ERROR       The specified portion of the PE/COFF image could not be read due
  64                                     to a device error.
  65
  66 **/
  67 typedef
  68 RETURN_STATUS
  69 (EFIAPI *PE_COFF_LOADER_READ_FILE)(
  70   IN     VOID   *FileHandle,
  71   IN     UINTN  FileOffset,
  72   IN OUT UINTN  *ReadSize,
  73   OUT    VOID   *Buffer
  74   );
  75
  76 ///
  77 /// Context structure used while PE/COFF image is being loaded and relocated
  78 ///
  79 typedef struct {
  80   ///
  81   /// Is set by PeCoffLoaderGetImageInfo() to the ImageBase in the PE/COFF header
  82   ///
  83   PHYSICAL_ADDRESS                  ImageAddress;
  84   ///
  85   /// Is set by PeCoffLoaderGetImageInfo() to the SizeOfImage in the PE/COFF header.
  86   /// Image size includes the size of Debug Entry if it is present.
  87   ///
  88   UINT64                            ImageSize;
  89   ///
  90   /// Is set to zero by PeCoffLoaderGetImageInfo(). If DestinationAddress is non zero,
  91   /// PeCoffLoaderRelocateImage() will relocate the image using this base address.
  92   /// If the DestinationAddress is zero, the ImageAddress will be used as the base
  93   /// address of relocation.
  94   ///
  95   PHYSICAL_ADDRESS                  DestinationAddress;
  96   ///
  97   /// PeCoffLoaderLoadImage() sets EntryPoint to to the entry point of the PE/COFF image.
  98   ///
  99   PHYSICAL_ADDRESS                  EntryPoint;
 100   ///
 101   /// Passed in by the caller to PeCoffLoaderGetImageInfo() and PeCoffLoaderLoadImage()
 102   /// to abstract accessing the image from the library.
 103   ///
 104   PE_COFF_LOADER_READ_FILE          ImageRead;
 105   ///
 106   /// Used as the FileHandle passed into the ImageRead function when it's called.
 107   ///
 108   VOID                              *Handle;
 109   ///
 110   /// Caller allocated buffer of size FixupDataSize that can be optionally allocated
 111   /// prior to calling PeCoffLoaderRelocateImage().
 112   /// This buffer is filled with the information used to fix up the image.
 113   /// The fixups have been applied to the image and this entry is just for information.
 114   ///
 115   VOID                              *FixupData;
 116   ///
 117   /// Is set by PeCoffLoaderGetImageInfo() to the Section Alignment in the PE/COFF header
 118   /// If the image is a TE image, then this field is set to 0.
 119   ///
 120   UINT32                            SectionAlignment;
 121   ///
 122   /// Set by PeCoffLoaderGetImageInfo() to offset to the PE/COFF header.
 123   /// If the PE/COFF image does not start with a DOS header, this value is zero;
 124   /// otherwise, it's the offset to the PE/COFF header.
 125   ///
 126   UINT32                            PeCoffHeaderOffset;
 127   ///
 128   /// Set by PeCoffLoaderGetImageInfo() to the Relative Virtual Address of the debug directory
 129   /// if it exists in the image
 130   ///
 131   UINT32                            DebugDirectoryEntryRva;
 132   ///
 133   /// Set by PeCoffLoaderLoadImage() to CodeView area of the PE/COFF Debug directory.
 134   ///
 135   VOID                              *CodeView;
 136   ///
 137   /// Set by PeCoffLoaderLoadImage() to point to the PDB entry contained in the CodeView area.
 138   /// The PdbPointer points to the filename of the PDB file used for source-level debug of
 139   /// the image by a debugger.
 140   ///
 141   CHAR8                             *PdbPointer;
 142   ///
 143   /// Is set by PeCoffLoaderGetImageInfo() to the Section Alignment in the PE/COFF header.
 144   ///
 145   UINTN                             SizeOfHeaders;
 146   ///
 147   /// Not used by this library class. Other library classes that layer on  top of this library
 148   /// class fill in this value as part of their GetImageInfo call.
 149   /// This allows the caller of the library to know what type of memory needs to be allocated
 150   /// to load and relocate the image.
 151   ///
 152   UINT32                            ImageCodeMemoryType;
 153   ///
 154   /// Not used by this library class. Other library classes that layer on top of this library
 155   /// class fill in this value as part of their GetImageInfo call.
 156   /// This allows the caller of the library to know what type of memory needs to be allocated
 157   /// to load and relocate the image
 158   ///
 159   UINT32                            ImageDataMemoryType;
 160   ///
 161   /// Set by any of the library functions if they encounter an error.
 162   ///
 163   UINT32                            ImageError;
 164   ///
 165   /// Set by PeCoffLoaderLoadImage() to indicate the size of FixupData that the caller must
 166   /// allocate before calling PeCoffLoaderRelocateImage()
 167   ///
 168   UINTN                             FixupDataSize;
 169   ///
 170   /// Set by PeCoffLoaderGetImageInfo() to the machine type stored in the PE/COFF header
 171   ///
 172   UINT16                            Machine;
 173   ///
 174   /// Set by PeCoffLoaderGetImageInfo() to the subsystem type stored in the PE/COFF header.
 175   ///
 176   UINT16                            ImageType;
 177   ///
 178   /// Set by PeCoffLoaderGetImageInfo() to TRUE if the PE/COFF image does not contain
 179   /// relocation information.
 180   ///
 181   BOOLEAN                           RelocationsStripped;
 182   ///
 183   /// Set by PeCoffLoaderGetImageInfo() to TRUE if the image is a TE image.
 184   /// For a definition of the TE Image format, see the Platform Initialization Pre-EFI
 185   /// Initialization Core Interface Specification.
 186   ///
 187   BOOLEAN                           IsTeImage;
 188   ///
 189   /// Set by PeCoffLoaderLoadImage() to the HII resource offset
 190   /// if the image contains a custom PE/COFF resource with the type 'HII';
 191   /// otherwise, the entry remains to be 0.
 192   ///
 193   PHYSICAL_ADDRESS                  HiiResourceData;
 194 } PE_COFF_LOADER_IMAGE_CONTEXT;
 195
 196 /**
 197   Retrieves information about a PE/COFF image.
 198
 199   Computes the PeCoffHeaderOffset, IsTeImage, ImageType, ImageAddress, ImageSize,
 200   DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, and
 201   DebugDirectoryEntryRva fields of the ImageContext structure.
 202   If ImageContext is NULL, then return RETURN_INVALID_PARAMETER.
 203   If the PE/COFF image accessed through the ImageRead service in the ImageContext
 204   structure is not a supported PE/COFF image type, then return RETURN_UNSUPPORTED.
 205   If any errors occur while computing the fields of ImageContext,
 206   then the error status is returned in the ImageError field of ImageContext.
 207   If the image is a TE image, then SectionAlignment is set to 0.
 208   The ImageRead and Handle fields of ImageContext structure must be valid prior
 209   to invoking this service.
 210
 211   @param  ImageContext              Pointer to the image context structure that describes the PE/COFF
 212                                     image that needs to be examined by this function.
 213
 214   @retval RETURN_SUCCESS            The information on the PE/COFF image was collected.
 215   @retval RETURN_INVALID_PARAMETER  ImageContext is NULL.
 216   @retval RETURN_UNSUPPORTED        The PE/COFF image is not supported.
 217
 218 **/
 219 RETURN_STATUS
 220 EFIAPI
 221 PeCoffLoaderGetImageInfo (
 222   IN OUT PE_COFF_LOADER_IMAGE_CONTEXT  *ImageContext
 223   );
 224
 225 /**
 226   Applies relocation fixups to a PE/COFF image that was loaded with PeCoffLoaderLoadImage().
 227
 228   If the DestinationAddress field of ImageContext is 0, then use the ImageAddress field of
 229   ImageContext as the relocation base address.  Otherwise, use the DestinationAddress field
 230   of ImageContext as the relocation base address.  The caller must allocate the relocation
 231   fixup log buffer and fill in the FixupData field of ImageContext prior to calling this function.
 232
 233   The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine, ImageType, ImageAddress,
 234   ImageSize, DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders,
 235   DebugDirectoryEntryRva, EntryPoint, FixupDataSize, CodeView, PdbPointer, and FixupData of
 236   the ImageContext structure must be valid prior to invoking this service.
 237
 238   If ImageContext is NULL, then ASSERT().
 239
 240   Note that if the platform does not maintain coherency between the instruction cache(s) and the data
 241   cache(s) in hardware, then the caller is responsible for performing cache maintenance operations
 242   prior to transferring control to a PE/COFF image that is loaded using this library.
 243
 244   @param  ImageContext        Pointer to the image context structure that describes the PE/COFF
 245                               image that is being relocated.
 246
 247   @retval RETURN_SUCCESS      The PE/COFF image was relocated.
 248                               Extended status information is in the ImageError field of ImageContext.
 249   @retval RETURN_LOAD_ERROR   The image in not a valid PE/COFF image.
 250                               Extended status information is in the ImageError field of ImageContext.
 251   @retval RETURN_UNSUPPORTED  A relocation record type is not supported.
 252                               Extended status information is in the ImageError field of ImageContext.
 253
 254 **/
 255 RETURN_STATUS
 256 EFIAPI
 257 PeCoffLoaderRelocateImage (
 258   IN OUT PE_COFF_LOADER_IMAGE_CONTEXT  *ImageContext
 259   );
 260
 261 /**
 262   Loads a PE/COFF image into memory.
 263
 264   Loads the PE/COFF image accessed through the ImageRead service of ImageContext into the buffer
 265   specified by the ImageAddress and ImageSize fields of ImageContext.  The caller must allocate
 266   the load buffer and fill in the ImageAddress and ImageSize fields prior to calling this function.
 267   The EntryPoint, FixupDataSize, CodeView, PdbPointer and HiiResourceData fields of ImageContext are computed.
 268   The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine, ImageType, ImageAddress, ImageSize,
 269   DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, and DebugDirectoryEntryRva
 270   fields of the ImageContext structure must be valid prior to invoking this service.
 271
 272   If ImageContext is NULL, then ASSERT().
 273
 274   Note that if the platform does not maintain coherency between the instruction cache(s) and the data
 275   cache(s) in hardware, then the caller is responsible for performing cache maintenance operations
 276   prior to transferring control to a PE/COFF image that is loaded using this library.
 277
 278   @param  ImageContext              Pointer to the image context structure that describes the PE/COFF
 279                                     image that is being loaded.
 280
 281   @retval RETURN_SUCCESS            The PE/COFF image was loaded into the buffer specified by
 282                                     the ImageAddress and ImageSize fields of ImageContext.
 283                                     Extended status information is in the ImageError field of ImageContext.
 284   @retval RETURN_BUFFER_TOO_SMALL   The caller did not provide a large enough buffer.
 285                                     Extended status information is in the ImageError field of ImageContext.
 286   @retval RETURN_LOAD_ERROR         The PE/COFF image is an EFI Runtime image with no relocations.
 287                                     Extended status information is in the ImageError field of ImageContext.
 288   @retval RETURN_INVALID_PARAMETER  The image address is invalid.
 289                                     Extended status information is in the ImageError field of ImageContext.
 290
 291 **/
 292 RETURN_STATUS
 293 EFIAPI
 294 PeCoffLoaderLoadImage (
 295   IN OUT PE_COFF_LOADER_IMAGE_CONTEXT  *ImageContext
 296   );
 297
 298
 299 /**
 300   Reads contents of a PE/COFF image from a buffer in system memory.
 301
 302   This is the default implementation of a PE_COFF_LOADER_READ_FILE function
 303   that assumes FileHandle pointer to the beginning of a PE/COFF image.
 304   This function reads contents of the PE/COFF image that starts at the system memory
 305   address specified by FileHandle. The read operation copies ReadSize bytes from the
 306   PE/COFF image starting at byte offset FileOffset into the buffer specified by Buffer.
 307   The size of the buffer actually read is returned in ReadSize.
 308
 309   If FileHandle is NULL, then ASSERT().
 310   If ReadSize is NULL, then ASSERT().
 311   If Buffer is NULL, then ASSERT().
 312
 313   @param  FileHandle        Pointer to base of the input stream
 314   @param  FileOffset        Offset into the PE/COFF image to begin the read operation.
 315   @param  ReadSize          On input, the size in bytes of the requested read operation.
 316                             On output, the number of bytes actually read.
 317   @param  Buffer            Output buffer that contains the data read from the PE/COFF image.
 318
 319   @retval RETURN_SUCCESS    Data is read from FileOffset from the Handle into
 320                             the buffer.
 321 **/
 322 RETURN_STATUS
 323 EFIAPI
 324 PeCoffLoaderImageReadFromMemory (
 325   IN     VOID    *FileHandle,
 326   IN     UINTN   FileOffset,
 327   IN OUT UINTN   *ReadSize,
 328   OUT    VOID    *Buffer
 329   );
 330
 331
 332 /**
 333   Reapply fixups on a fixed up PE32/PE32+ image to allow virutal calling at EFI
 334   runtime.
 335
 336   This function reapplies relocation fixups to the PE/COFF image specified by ImageBase
 337   and ImageSize so the image will execute correctly when the PE/COFF image is mapped
 338   to the address specified by VirtualImageBase. RelocationData must be identical
 339   to the FiuxupData buffer from the PE_COFF_LOADER_IMAGE_CONTEXT structure
 340   after this PE/COFF image was relocated with PeCoffLoaderRelocateImage().
 341
 342   Note that if the platform does not maintain coherency between the instruction cache(s) and the data
 343   cache(s) in hardware, then the caller is responsible for performing cache maintenance operations
 344   prior to transferring control to a PE/COFF image that is loaded using this library.
 345
 346   @param  ImageBase          Base address of a PE/COFF image that has been loaded
 347                              and relocated into system memory.
 348   @param  VirtImageBase      The request virtual address that the PE/COFF image is to
 349                              be fixed up for.
 350   @param  ImageSize          The size, in bytes, of the PE/COFF image.
 351   @param  RelocationData     A pointer to the relocation data that was collected when the PE/COFF
 352                              image was relocated using PeCoffLoaderRelocateImage().
 353
 354 **/
 355 VOID
 356 EFIAPI
 357 PeCoffLoaderRelocateImageForRuntime (
 358   IN  PHYSICAL_ADDRESS        ImageBase,
 359   IN  PHYSICAL_ADDRESS        VirtImageBase,
 360   IN  UINTN                   ImageSize,
 361   IN  VOID                    *RelocationData
 362   );
 363
 364 /**
 365   Unloads a loaded PE/COFF image from memory and releases its taken resource.
 366   Releases any environment specific resources that were allocated when the image
 367   specified by ImageContext was loaded using PeCoffLoaderLoadImage().
 368
 369   For NT32 emulator, the PE/COFF image loaded by system needs to release.
 370   For real platform, the PE/COFF image loaded by Core doesn't needs to be unloaded,
 371   this function can simply return RETURN_SUCCESS.
 372
 373   If ImageContext is NULL, then ASSERT().
 374
 375   @param  ImageContext              Pointer to the image context structure that describes the PE/COFF
 376                                     image to be unloaded.
 377
 378   @retval RETURN_SUCCESS            The PE/COFF image was unloaded successfully.
 379 **/
 380 RETURN_STATUS
 381 EFIAPI
 382 PeCoffLoaderUnloadImage (
 383   IN OUT PE_COFF_LOADER_IMAGE_CONTEXT  *ImageContext
 384   );
 385 #endif