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 - 2018, Intel Corporation. All rights reserved.<BR>
   9 SPDX-License-Identifier: BSD-2-Clause-Patent
  10
  11 **/
  12
  13 #ifndef __BASE_PE_COFF_LIB_H__
  14 #define __BASE_PE_COFF_LIB_H__
  15
  16 #include <IndustryStandard/PeImage.h>
  17 //
  18 // Return status codes from the PE/COFF Loader services
  19 //
  20 #define IMAGE_ERROR_SUCCESS                      0
  21 #define IMAGE_ERROR_IMAGE_READ                   1
  22 #define IMAGE_ERROR_INVALID_PE_HEADER_SIGNATURE  2
  23 #define IMAGE_ERROR_INVALID_MACHINE_TYPE         3
  24 #define IMAGE_ERROR_INVALID_SUBSYSTEM            4
  25 #define IMAGE_ERROR_INVALID_IMAGE_ADDRESS        5
  26 #define IMAGE_ERROR_INVALID_IMAGE_SIZE           6
  27 #define IMAGE_ERROR_INVALID_SECTION_ALIGNMENT    7
  28 #define IMAGE_ERROR_SECTION_NOT_LOADED           8
  29 #define IMAGE_ERROR_FAILED_RELOCATION            9
  30 #define IMAGE_ERROR_FAILED_ICACHE_FLUSH          10
  31 #define IMAGE_ERROR_UNSUPPORTED                  11
  32
  33 /**
  34   Reads contents of a PE/COFF image.
  35
  36   A function of this type reads contents of the PE/COFF image specified by FileHandle. The read
  37   operation copies ReadSize bytes from the PE/COFF image starting at byte offset FileOffset into
  38   the buffer specified by Buffer. The size of the buffer actually read is returned in ReadSize.
  39   If FileOffset specifies an offset past the end of the PE/COFF image, a ReadSize of 0 is returned.
  40   A function of this type must be registered in the ImageRead field of a PE_COFF_LOADER_IMAGE_CONTEXT
  41   structure for the PE/COFF Loader Library service to function correctly.  This function abstracts access
  42   to a PE/COFF image so it can be implemented in an environment specific manner.  For example, SEC and PEI
  43   environments may access memory directly to read the contents of a PE/COFF image, and DXE or UEFI
  44   environments may require protocol services to read the contents of PE/COFF image
  45   stored on FLASH, disk, or network devices.
  46
  47   If FileHandle is not a valid handle, then ASSERT().
  48   If ReadSize is NULL, then ASSERT().
  49   If Buffer is NULL, then ASSERT().
  50
  51   @param  FileHandle      Pointer to the file handle to read the PE/COFF image.
  52   @param  FileOffset      Offset into the PE/COFF image to begin the read operation.
  53   @param  ReadSize        On input, the size in bytes of the requested read operation.
  54                           On output, the number of bytes actually read.
  55   @param  Buffer          Output buffer that contains the data read from the PE/COFF image.
  56
  57   @retval RETURN_SUCCESS            The specified portion of the PE/COFF image was
  58                                     read and the size return in ReadSize.
  59   @retval RETURN_DEVICE_ERROR       The specified portion of the PE/COFF image
  60                                     could not be read due to a device error.
  61
  62 **/
  63 typedef
  64 RETURN_STATUS
  65 (EFIAPI *PE_COFF_LOADER_READ_FILE)(
  66   IN     VOID   *FileHandle,
  67   IN     UINTN  FileOffset,
  68   IN OUT UINTN  *ReadSize,
  69   OUT    VOID   *Buffer
  70   );
  71
  72 ///
  73 /// The context structure used while PE/COFF image is being loaded and relocated.
  74 ///
  75 typedef struct {
  76   ///
  77   /// Set by PeCoffLoaderGetImageInfo() to the ImageBase in the PE/COFF header.
  78   ///
  79   PHYSICAL_ADDRESS                  ImageAddress;
  80   ///
  81   /// Set by PeCoffLoaderGetImageInfo() to the SizeOfImage in the PE/COFF header.
  82   /// Image size includes the size of Debug Entry if it is present.
  83   ///
  84   UINT64                            ImageSize;
  85   ///
  86   /// Is set to zero by PeCoffLoaderGetImageInfo(). If DestinationAddress is non-zero,
  87   /// PeCoffLoaderRelocateImage() will relocate the image using this base address.
  88   /// If the DestinationAddress is zero, the ImageAddress will be used as the base
  89   /// address of relocation.
  90   ///
  91   PHYSICAL_ADDRESS                  DestinationAddress;
  92   ///
  93   /// PeCoffLoaderLoadImage() sets EntryPoint to to the entry point of the PE/COFF image.
  94   ///
  95   PHYSICAL_ADDRESS                  EntryPoint;
  96   ///
  97   /// Passed in by the caller to PeCoffLoaderGetImageInfo() and PeCoffLoaderLoadImage()
  98   /// to abstract accessing the image from the library.
  99   ///
 100   PE_COFF_LOADER_READ_FILE          ImageRead;
 101   ///
 102   /// Used as the FileHandle passed into the ImageRead function when it's called.
 103   ///
 104   VOID                              *Handle;
 105   ///
 106   /// Caller allocated buffer of size FixupDataSize that can be optionally allocated
 107   /// prior to calling PeCoffLoaderRelocateImage().
 108   /// This buffer is filled with the information used to fix up the image.
 109   /// The fixups have been applied to the image and this entry is just for information.
 110   ///
 111   VOID                              *FixupData;
 112   ///
 113   /// Set by PeCoffLoaderGetImageInfo() to the Section Alignment in the PE/COFF header.
 114   /// If the image is a TE image, then this field is set to 0.
 115   ///
 116   UINT32                            SectionAlignment;
 117   ///
 118   /// Set by PeCoffLoaderGetImageInfo() to offset to the PE/COFF header.
 119   /// If the PE/COFF image does not start with a DOS header, this value is zero.
 120   /// Otherwise, it's the offset to the PE/COFF header.
 121   ///
 122   UINT32                            PeCoffHeaderOffset;
 123   ///
 124   /// Set by PeCoffLoaderGetImageInfo() to the Relative Virtual Address of the debug directory,
 125   /// if it exists in the image
 126   ///
 127   UINT32                            DebugDirectoryEntryRva;
 128   ///
 129   /// Set by PeCoffLoaderLoadImage() to CodeView area of the PE/COFF Debug directory.
 130   ///
 131   VOID                              *CodeView;
 132   ///
 133   /// Set by PeCoffLoaderLoadImage() to point to the PDB entry contained in the CodeView area.
 134   /// The PdbPointer points to the filename of the PDB file used for source-level debug of
 135   /// the image by a debugger.
 136   ///
 137   CHAR8                             *PdbPointer;
 138   ///
 139   /// Is set by PeCoffLoaderGetImageInfo() to the Section Alignment in the PE/COFF header.
 140   ///
 141   UINTN                             SizeOfHeaders;
 142   ///
 143   /// Not used by this library class. Other library classes that layer on  top of this library
 144   /// class fill in this value as part of their GetImageInfo call.
 145   /// This allows the caller of the library to know what type of memory needs to be allocated
 146   /// to load and relocate the image.
 147   ///
 148   UINT32                            ImageCodeMemoryType;
 149   ///
 150   /// Not used by this library class. Other library classes that layer on top of this library
 151   /// class fill in this value as part of their GetImageInfo call.
 152   /// This allows the caller of the library to know what type of memory needs to be allocated
 153   /// to load and relocate the image.
 154   ///
 155   UINT32                            ImageDataMemoryType;
 156   ///
 157   /// Set by any of the library functions if they encounter an error.
 158   ///
 159   UINT32                            ImageError;
 160   ///
 161   /// Set by PeCoffLoaderLoadImage() to indicate the size of FixupData that the caller must
 162   /// allocate before calling PeCoffLoaderRelocateImage().
 163   ///
 164   UINTN                             FixupDataSize;
 165   ///
 166   /// Set by PeCoffLoaderGetImageInfo() to the machine type stored in the PE/COFF header.
 167   ///
 168   UINT16                            Machine;
 169   ///
 170   /// Set by PeCoffLoaderGetImageInfo() to the subsystem type stored in the PE/COFF header.
 171   ///
 172   UINT16                            ImageType;
 173   ///
 174   /// Set by PeCoffLoaderGetImageInfo() to TRUE if the PE/COFF image does not contain
 175   /// relocation information.
 176   ///
 177   BOOLEAN                           RelocationsStripped;
 178   ///
 179   /// Set by PeCoffLoaderGetImageInfo() to TRUE if the image is a TE image.
 180   /// For a definition of the TE Image format, see the Platform Initialization Pre-EFI
 181   /// Initialization Core Interface Specification.
 182   ///
 183   BOOLEAN                           IsTeImage;
 184   ///
 185   /// Set by PeCoffLoaderLoadImage() to the HII resource offset
 186   /// if the image contains a custom PE/COFF resource with the type 'HII'.
 187   /// Otherwise, the entry remains to be 0.
 188   ///
 189   PHYSICAL_ADDRESS                  HiiResourceData;
 190   ///
 191   /// Private storage for implementation specific data.
 192   ///
 193   UINT64                            Context;
 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              The pointer to the image context structure that
 212                                     describes the PE/COFF image that needs to be
 213                                     examined by this function.
 214
 215   @retval RETURN_SUCCESS            The information on the PE/COFF image was collected.
 216   @retval RETURN_INVALID_PARAMETER  ImageContext is NULL.
 217   @retval RETURN_UNSUPPORTED        The PE/COFF image is not supported.
 218
 219 **/
 220 RETURN_STATUS
 221 EFIAPI
 222 PeCoffLoaderGetImageInfo (
 223   IN OUT PE_COFF_LOADER_IMAGE_CONTEXT  *ImageContext
 224   );
 225
 226 /**
 227   Applies relocation fixups to a PE/COFF image that was loaded with PeCoffLoaderLoadImage().
 228
 229   If the DestinationAddress field of ImageContext is 0, then use the ImageAddress field of
 230   ImageContext as the relocation base address.  Otherwise, use the DestinationAddress field
 231   of ImageContext as the relocation base address.  The caller must allocate the relocation
 232   fixup log buffer and fill in the FixupData field of ImageContext prior to calling this function.
 233
 234   The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine, ImageType, ImageAddress,
 235   ImageSize, DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders,
 236   DebugDirectoryEntryRva, EntryPoint, FixupDataSize, CodeView, PdbPointer, and FixupData of
 237   the ImageContext structure must be valid prior to invoking this service.
 238
 239   If ImageContext is NULL, then ASSERT().
 240
 241   Note that if the platform does not maintain coherency between the instruction cache(s) and the data
 242   cache(s) in hardware, then the caller is responsible for performing cache maintenance operations
 243   prior to transferring control to a PE/COFF image that is loaded using this library.
 244
 245   @param  ImageContext        The pointer to the image context structure that describes the PE/COFF
 246                               image that is being relocated.
 247
 248   @retval RETURN_SUCCESS      The PE/COFF image was relocated.
 249                               Extended status information is in the ImageError field of ImageContext.
 250   @retval RETURN_LOAD_ERROR   The image in not a valid PE/COFF image.
 251                               Extended status information is in the ImageError field of ImageContext.
 252   @retval RETURN_UNSUPPORTED  A relocation record type is not supported.
 253                               Extended status information is in the ImageError field of ImageContext.
 254
 255 **/
 256 RETURN_STATUS
 257 EFIAPI
 258 PeCoffLoaderRelocateImage (
 259   IN OUT PE_COFF_LOADER_IMAGE_CONTEXT  *ImageContext
 260   );
 261
 262 /**
 263   Loads a PE/COFF image into memory.
 264
 265   Loads the PE/COFF image accessed through the ImageRead service of ImageContext into the buffer
 266   specified by the ImageAddress and ImageSize fields of ImageContext.  The caller must allocate
 267   the load buffer and fill in the ImageAddress and ImageSize fields prior to calling this function.
 268   The EntryPoint, FixupDataSize, CodeView, PdbPointer and HiiResourceData fields of ImageContext are computed.
 269   The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine, ImageType, ImageAddress, ImageSize,
 270   DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, and DebugDirectoryEntryRva
 271   fields of the ImageContext structure must be valid prior to invoking this service.
 272
 273   If ImageContext is NULL, then ASSERT().
 274
 275   Note that if the platform does not maintain coherency between the instruction cache(s) and the data
 276   cache(s) in hardware, then the caller is responsible for performing cache maintenance operations
 277   prior to transferring control to a PE/COFF image that is loaded using this library.
 278
 279   @param  ImageContext              The pointer to the image context structure that describes the PE/COFF
 280                                     image that is being loaded.
 281
 282   @retval RETURN_SUCCESS            The PE/COFF image was loaded into the buffer specified by
 283                                     the ImageAddress and ImageSize fields of ImageContext.
 284                                     Extended status information is in the ImageError field of ImageContext.
 285   @retval RETURN_BUFFER_TOO_SMALL   The caller did not provide a large enough buffer.
 286                                     Extended status information is in the ImageError field of ImageContext.
 287   @retval RETURN_LOAD_ERROR         The PE/COFF image is an EFI Runtime image with no relocations.
 288                                     Extended status information is in the ImageError field of ImageContext.
 289   @retval RETURN_INVALID_PARAMETER  The image address is invalid.
 290                                     Extended status information is in the ImageError field of ImageContext.
 291
 292 **/
 293 RETURN_STATUS
 294 EFIAPI
 295 PeCoffLoaderLoadImage (
 296   IN OUT PE_COFF_LOADER_IMAGE_CONTEXT  *ImageContext
 297   );
 298
 299
 300 /**
 301   Reads contents of a PE/COFF image from a buffer in system memory.
 302
 303   This is the default implementation of a PE_COFF_LOADER_READ_FILE function
 304   that assumes FileHandle pointer to the beginning of a PE/COFF image.
 305   This function reads contents of the PE/COFF image that starts at the system memory
 306   address specified by FileHandle. The read operation copies ReadSize bytes from the
 307   PE/COFF image starting at byte offset FileOffset into the buffer specified by Buffer.
 308   The size of the buffer actually read is returned in ReadSize.
 309
 310   If FileHandle is NULL, then ASSERT().
 311   If ReadSize is NULL, then ASSERT().
 312   If Buffer is NULL, then ASSERT().
 313
 314   @param  FileHandle        The pointer to base of the input stream
 315   @param  FileOffset        Offset into the PE/COFF image to begin the read operation.
 316   @param  ReadSize          On input, the size in bytes of the requested read operation.
 317                             On output, the number of bytes actually read.
 318   @param  Buffer            Output buffer that contains the data read from the PE/COFF image.
 319
 320   @retval RETURN_SUCCESS    The data is read from FileOffset from the Handle into
 321                             the buffer.
 322 **/
 323 RETURN_STATUS
 324 EFIAPI
 325 PeCoffLoaderImageReadFromMemory (
 326   IN     VOID    *FileHandle,
 327   IN     UINTN   FileOffset,
 328   IN OUT UINTN   *ReadSize,
 329   OUT    VOID    *Buffer
 330   );
 331
 332
 333 /**
 334   Reapply fixups on a fixed up PE32/PE32+ image to allow virtual calling at EFI
 335   runtime.
 336
 337   This function reapplies relocation fixups to the PE/COFF image specified by ImageBase
 338   and ImageSize so the image will execute correctly when the PE/COFF image is mapped
 339   to the address specified by VirtualImageBase. RelocationData must be identical
 340   to the FiuxupData buffer from the PE_COFF_LOADER_IMAGE_CONTEXT structure
 341   after this PE/COFF image was relocated with PeCoffLoaderRelocateImage().
 342
 343   Note that if the platform does not maintain coherency between the instruction cache(s) and the data
 344   cache(s) in hardware, then the caller is responsible for performing cache maintenance operations
 345   prior to transferring control to a PE/COFF image that is loaded using this library.
 346
 347   @param  ImageBase          The base address of a PE/COFF image that has been loaded
 348                              and relocated into system memory.
 349   @param  VirtImageBase      The request virtual address that the PE/COFF image is to
 350                              be fixed up for.
 351   @param  ImageSize          The size, in bytes, of the PE/COFF image.
 352   @param  RelocationData     A pointer to the relocation data that was collected when the PE/COFF
 353                              image was relocated using PeCoffLoaderRelocateImage().
 354
 355 **/
 356 VOID
 357 EFIAPI
 358 PeCoffLoaderRelocateImageForRuntime (
 359   IN  PHYSICAL_ADDRESS        ImageBase,
 360   IN  PHYSICAL_ADDRESS        VirtImageBase,
 361   IN  UINTN                   ImageSize,
 362   IN  VOID                    *RelocationData
 363   );
 364
 365 /**
 366   Unloads a loaded PE/COFF image from memory and releases its taken resource.
 367   Releases any environment specific resources that were allocated when the image
 368   specified by ImageContext was loaded using PeCoffLoaderLoadImage().
 369
 370   For NT32 emulator, the PE/COFF image loaded by system needs to release.
 371   For real platform, the PE/COFF image loaded by Core doesn't needs to be unloaded,
 372   this function can simply return RETURN_SUCCESS.
 373
 374   If ImageContext is NULL, then ASSERT().
 375
 376   @param  ImageContext              Pointer to the image context structure that describes the PE/COFF
 377                                     image to be unloaded.
 378
 379   @retval RETURN_SUCCESS            The PE/COFF image was unloaded successfully.
 380 **/
 381 RETURN_STATUS
 382 EFIAPI
 383 PeCoffLoaderUnloadImage (
 384   IN OUT PE_COFF_LOADER_IMAGE_CONTEXT  *ImageContext
 385   );
 386 #endif