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fb3df220 1/** @file\r
50a64e5b 2 Provides services to load and relocate a PE/COFF image.\r
fb3df220 3\r
badcbfb2 4 The PE/COFF Loader Library abstracts the implementation of a PE/COFF loader for\r
1a2f870c 5 IA-32, x86, IPF, and EBC processor types. The library functions are memory-based \r
badcbfb2 6 and can be ported easily to any environment.\r
7 \r
3acb1985 8Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>\r
af2dc6a7 9This program and the accompanying materials are licensed and made available under \r
10the terms and conditions of the BSD License that accompanies this distribution. \r
11The full text of the license may be found at\r
12http://opensource.org/licenses/bsd-license.php. \r
fb3df220 13\r
50a64e5b 14THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
15WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
fb3df220 16\r
fb3df220 17**/\r
18\r
19#ifndef __BASE_PE_COFF_LIB_H__\r
20#define __BASE_PE_COFF_LIB_H__\r
21\r
d8dcb666 22#include <IndustryStandard/PeImage.h>\r
fb3df220 23//\r
24// Return status codes from the PE/COFF Loader services\r
fb3df220 25//\r
26#define IMAGE_ERROR_SUCCESS 0\r
27#define IMAGE_ERROR_IMAGE_READ 1 \r
28#define IMAGE_ERROR_INVALID_PE_HEADER_SIGNATURE 2\r
29#define IMAGE_ERROR_INVALID_MACHINE_TYPE 3\r
30#define IMAGE_ERROR_INVALID_SUBSYSTEM 4\r
31#define IMAGE_ERROR_INVALID_IMAGE_ADDRESS 5\r
32#define IMAGE_ERROR_INVALID_IMAGE_SIZE 6\r
33#define IMAGE_ERROR_INVALID_SECTION_ALIGNMENT 7\r
34#define IMAGE_ERROR_SECTION_NOT_LOADED 8\r
35#define IMAGE_ERROR_FAILED_RELOCATION 9\r
36#define IMAGE_ERROR_FAILED_ICACHE_FLUSH 10\r
0054ce56 37#define IMAGE_ERROR_UNSUPPORTED 11\r
fb3df220 38\r
badcbfb2 39/**\r
40 Reads contents of a PE/COFF image.\r
41\r
42 A function of this type reads contents of the PE/COFF image specified by FileHandle. The read \r
43 operation copies ReadSize bytes from the PE/COFF image starting at byte offset FileOffset into \r
44 the buffer specified by Buffer. The size of the buffer actually read is returned in ReadSize. \r
45 If FileOffset specifies an offset past the end of the PE/COFF image, a ReadSize of 0 is returned.\r
46 A function of this type must be registered in the ImageRead field of a PE_COFF_LOADER_IMAGE_CONTEXT \r
47 structure for the PE/COFF Loader Library service to function correctly. This function abstracts access \r
48 to a PE/COFF image so it can be implemented in an environment specific manner. For example, SEC and PEI \r
49 environments may access memory directly to read the contents of a PE/COFF image, and DXE or UEFI \r
50 environments may require protocol services to read the contents of PE/COFF image \r
51 stored on FLASH, disk, or network devices.\r
52 \r
53 If FileHandle is not a valid handle, then ASSERT().\r
54 If ReadSize is NULL, then ASSERT().\r
55 If Buffer is NULL, then ASSERT().\r
56\r
57 @param FileHandle Pointer to the file handle to read the PE/COFF image.\r
58 @param FileOffset Offset into the PE/COFF image to begin the read operation.\r
59 @param ReadSize On input, the size in bytes of the requested read operation. \r
60 On output, the number of bytes actually read.\r
61 @param Buffer Output buffer that contains the data read from the PE/COFF image.\r
62 \r
af2dc6a7 63 @retval RETURN_SUCCESS The specified portion of the PE/COFF image was \r
3acb1985 64 read and the size return in ReadSize.\r
af2dc6a7 65 @retval RETURN_DEVICE_ERROR The specified portion of the PE/COFF image \r
66 could not be read due to a device error.\r
badcbfb2 67\r
68**/\r
146332ae 69typedef\r
70RETURN_STATUS\r
a5c1c592 71(EFIAPI *PE_COFF_LOADER_READ_FILE)(\r
146332ae 72 IN VOID *FileHandle,\r
73 IN UINTN FileOffset,\r
74 IN OUT UINTN *ReadSize,\r
75 OUT VOID *Buffer\r
76 );\r
77\r
f6d7003d 78///\r
af2dc6a7 79/// The context structure used while PE/COFF image is being loaded and relocated.\r
f6d7003d 80///\r
146332ae 81typedef struct {\r
f6d7003d 82 ///\r
af2dc6a7 83 /// Set by PeCoffLoaderGetImageInfo() to the ImageBase in the PE/COFF header.\r
f6d7003d 84 ///\r
146332ae 85 PHYSICAL_ADDRESS ImageAddress;\r
f6d7003d 86 ///\r
af2dc6a7 87 /// Set by PeCoffLoaderGetImageInfo() to the SizeOfImage in the PE/COFF header.\r
f6d7003d 88 /// Image size includes the size of Debug Entry if it is present.\r
89 ///\r
146332ae 90 UINT64 ImageSize;\r
f6d7003d 91 ///\r
af2dc6a7 92 /// Is set to zero by PeCoffLoaderGetImageInfo(). If DestinationAddress is non-zero,\r
f6d7003d 93 /// PeCoffLoaderRelocateImage() will relocate the image using this base address.\r
94 /// If the DestinationAddress is zero, the ImageAddress will be used as the base\r
95 /// address of relocation.\r
96 ///\r
146332ae 97 PHYSICAL_ADDRESS DestinationAddress;\r
f6d7003d 98 ///\r
99 /// PeCoffLoaderLoadImage() sets EntryPoint to to the entry point of the PE/COFF image.\r
100 ///\r
146332ae 101 PHYSICAL_ADDRESS EntryPoint;\r
f6d7003d 102 ///\r
103 /// Passed in by the caller to PeCoffLoaderGetImageInfo() and PeCoffLoaderLoadImage()\r
104 /// to abstract accessing the image from the library.\r
105 ///\r
146332ae 106 PE_COFF_LOADER_READ_FILE ImageRead;\r
f6d7003d 107 ///\r
108 /// Used as the FileHandle passed into the ImageRead function when it's called.\r
109 ///\r
146332ae 110 VOID *Handle;\r
f6d7003d 111 ///\r
112 /// Caller allocated buffer of size FixupDataSize that can be optionally allocated\r
113 /// prior to calling PeCoffLoaderRelocateImage(). \r
114 /// This buffer is filled with the information used to fix up the image. \r
115 /// The fixups have been applied to the image and this entry is just for information.\r
116 ///\r
146332ae 117 VOID *FixupData;\r
f6d7003d 118 ///\r
af2dc6a7 119 /// Set by PeCoffLoaderGetImageInfo() to the Section Alignment in the PE/COFF header.\r
3ecdcd11 120 /// If the image is a TE image, then this field is set to 0.\r
f6d7003d 121 ///\r
146332ae 122 UINT32 SectionAlignment;\r
f6d7003d 123 ///\r
124 /// Set by PeCoffLoaderGetImageInfo() to offset to the PE/COFF header.\r
af2dc6a7 125 /// If the PE/COFF image does not start with a DOS header, this value is zero. \r
126 /// Otherwise, it's the offset to the PE/COFF header.\r
f6d7003d 127 ///\r
146332ae 128 UINT32 PeCoffHeaderOffset;\r
f6d7003d 129 ///\r
af2dc6a7 130 /// Set by PeCoffLoaderGetImageInfo() to the Relative Virtual Address of the debug directory,\r
f6d7003d 131 /// if it exists in the image\r
132 ///\r
146332ae 133 UINT32 DebugDirectoryEntryRva;\r
f6d7003d 134 ///\r
135 /// Set by PeCoffLoaderLoadImage() to CodeView area of the PE/COFF Debug directory.\r
136 ///\r
146332ae 137 VOID *CodeView;\r
f6d7003d 138 ///\r
139 /// Set by PeCoffLoaderLoadImage() to point to the PDB entry contained in the CodeView area.\r
140 /// The PdbPointer points to the filename of the PDB file used for source-level debug of \r
141 /// the image by a debugger.\r
142 ///\r
146332ae 143 CHAR8 *PdbPointer;\r
f6d7003d 144 ///\r
145 /// Is set by PeCoffLoaderGetImageInfo() to the Section Alignment in the PE/COFF header.\r
146 ///\r
146332ae 147 UINTN SizeOfHeaders;\r
f6d7003d 148 ///\r
149 /// Not used by this library class. Other library classes that layer on top of this library\r
150 /// class fill in this value as part of their GetImageInfo call. \r
151 /// This allows the caller of the library to know what type of memory needs to be allocated\r
152 /// to load and relocate the image.\r
153 ///\r
146332ae 154 UINT32 ImageCodeMemoryType;\r
f6d7003d 155 ///\r
156 /// Not used by this library class. Other library classes that layer on top of this library \r
157 /// class fill in this value as part of their GetImageInfo call.\r
158 /// This allows the caller of the library to know what type of memory needs to be allocated\r
af2dc6a7 159 /// to load and relocate the image.\r
f6d7003d 160 ///\r
146332ae 161 UINT32 ImageDataMemoryType;\r
f6d7003d 162 ///\r
163 /// Set by any of the library functions if they encounter an error. \r
164 ///\r
146332ae 165 UINT32 ImageError;\r
f6d7003d 166 ///\r
167 /// Set by PeCoffLoaderLoadImage() to indicate the size of FixupData that the caller must\r
af2dc6a7 168 /// allocate before calling PeCoffLoaderRelocateImage().\r
f6d7003d 169 ///\r
146332ae 170 UINTN FixupDataSize;\r
f6d7003d 171 ///\r
af2dc6a7 172 /// Set by PeCoffLoaderGetImageInfo() to the machine type stored in the PE/COFF header.\r
f6d7003d 173 ///\r
146332ae 174 UINT16 Machine;\r
f6d7003d 175 ///\r
176 /// Set by PeCoffLoaderGetImageInfo() to the subsystem type stored in the PE/COFF header.\r
177 ///\r
146332ae 178 UINT16 ImageType;\r
f6d7003d 179 ///\r
180 /// Set by PeCoffLoaderGetImageInfo() to TRUE if the PE/COFF image does not contain\r
181 /// relocation information.\r
182 ///\r
146332ae 183 BOOLEAN RelocationsStripped;\r
f6d7003d 184 ///\r
185 /// Set by PeCoffLoaderGetImageInfo() to TRUE if the image is a TE image. \r
186 /// For a definition of the TE Image format, see the Platform Initialization Pre-EFI\r
187 /// Initialization Core Interface Specification.\r
188 ///\r
146332ae 189 BOOLEAN IsTeImage;\r
b4500f6e 190 ///\r
191 /// Set by PeCoffLoaderLoadImage() to the HII resource offset\r
af2dc6a7 192 /// if the image contains a custom PE/COFF resource with the type 'HII'.\r
193 /// Otherwise, the entry remains to be 0.\r
b4500f6e 194 ///\r
195 PHYSICAL_ADDRESS HiiResourceData;\r
ebd04fc2 196 ///\r
197 /// Private storage for implementation specific data. \r
198 ///\r
199 UINT64 Context; \r
146332ae 200} PE_COFF_LOADER_IMAGE_CONTEXT;\r
fb3df220 201\r
202/**\r
203 Retrieves information about a PE/COFF image.\r
204\r
3ecdcd11
LG
205 Computes the PeCoffHeaderOffset, IsTeImage, ImageType, ImageAddress, ImageSize, \r
206 DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, and \r
207 DebugDirectoryEntryRva fields of the ImageContext structure. \r
208 If ImageContext is NULL, then return RETURN_INVALID_PARAMETER. \r
209 If the PE/COFF image accessed through the ImageRead service in the ImageContext \r
210 structure is not a supported PE/COFF image type, then return RETURN_UNSUPPORTED. \r
211 If any errors occur while computing the fields of ImageContext, \r
212 then the error status is returned in the ImageError field of ImageContext. \r
213 If the image is a TE image, then SectionAlignment is set to 0.\r
badcbfb2 214 The ImageRead and Handle fields of ImageContext structure must be valid prior \r
215 to invoking this service.\r
fb3df220 216\r
af2dc6a7 217 @param ImageContext The pointer to the image context structure that \r
218 describes the PE/COFF image that needs to be \r
219 examined by this function.\r
fb3df220 220\r
221 @retval RETURN_SUCCESS The information on the PE/COFF image was collected.\r
222 @retval RETURN_INVALID_PARAMETER ImageContext is NULL.\r
223 @retval RETURN_UNSUPPORTED The PE/COFF image is not supported.\r
224\r
225**/\r
226RETURN_STATUS\r
227EFIAPI\r
228PeCoffLoaderGetImageInfo (\r
229 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r
ed66e1bc 230 );\r
fb3df220 231\r
232/**\r
233 Applies relocation fixups to a PE/COFF image that was loaded with PeCoffLoaderLoadImage().\r
234\r
235 If the DestinationAddress field of ImageContext is 0, then use the ImageAddress field of\r
236 ImageContext as the relocation base address. Otherwise, use the DestinationAddress field\r
237 of ImageContext as the relocation base address. The caller must allocate the relocation\r
badcbfb2 238 fixup log buffer and fill in the FixupData field of ImageContext prior to calling this function.\r
239 \r
1a2f870c 240 The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine, ImageType, ImageAddress, \r
badcbfb2 241 ImageSize, DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, \r
242 DebugDirectoryEntryRva, EntryPoint, FixupDataSize, CodeView, PdbPointer, and FixupData of \r
243 the ImageContext structure must be valid prior to invoking this service.\r
244 \r
fb3df220 245 If ImageContext is NULL, then ASSERT().\r
246\r
8d579453 247 Note that if the platform does not maintain coherency between the instruction cache(s) and the data\r
248 cache(s) in hardware, then the caller is responsible for performing cache maintenance operations\r
249 prior to transferring control to a PE/COFF image that is loaded using this library.\r
250\r
af2dc6a7 251 @param ImageContext The pointer to the image context structure that describes the PE/COFF\r
fb3df220 252 image that is being relocated.\r
253\r
254 @retval RETURN_SUCCESS The PE/COFF image was relocated.\r
255 Extended status information is in the ImageError field of ImageContext.\r
256 @retval RETURN_LOAD_ERROR The image in not a valid PE/COFF image.\r
257 Extended status information is in the ImageError field of ImageContext.\r
258 @retval RETURN_UNSUPPORTED A relocation record type is not supported.\r
259 Extended status information is in the ImageError field of ImageContext.\r
260\r
261**/\r
262RETURN_STATUS\r
263EFIAPI\r
264PeCoffLoaderRelocateImage (\r
265 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r
ed66e1bc 266 );\r
fb3df220 267\r
268/**\r
269 Loads a PE/COFF image into memory.\r
270\r
271 Loads the PE/COFF image accessed through the ImageRead service of ImageContext into the buffer\r
272 specified by the ImageAddress and ImageSize fields of ImageContext. The caller must allocate\r
273 the load buffer and fill in the ImageAddress and ImageSize fields prior to calling this function.\r
b4500f6e 274 The EntryPoint, FixupDataSize, CodeView, PdbPointer and HiiResourceData fields of ImageContext are computed.\r
1a2f870c 275 The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine, ImageType, ImageAddress, ImageSize, \r
badcbfb2 276 DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, and DebugDirectoryEntryRva \r
277 fields of the ImageContext structure must be valid prior to invoking this service.\r
278 \r
fb3df220 279 If ImageContext is NULL, then ASSERT().\r
280\r
8d579453 281 Note that if the platform does not maintain coherency between the instruction cache(s) and the data\r
282 cache(s) in hardware, then the caller is responsible for performing cache maintenance operations\r
283 prior to transferring control to a PE/COFF image that is loaded using this library.\r
284\r
af2dc6a7 285 @param ImageContext The pointer to the image context structure that describes the PE/COFF\r
fb3df220 286 image that is being loaded.\r
287\r
288 @retval RETURN_SUCCESS The PE/COFF image was loaded into the buffer specified by\r
289 the ImageAddress and ImageSize fields of ImageContext.\r
290 Extended status information is in the ImageError field of ImageContext.\r
291 @retval RETURN_BUFFER_TOO_SMALL The caller did not provide a large enough buffer.\r
292 Extended status information is in the ImageError field of ImageContext.\r
293 @retval RETURN_LOAD_ERROR The PE/COFF image is an EFI Runtime image with no relocations.\r
294 Extended status information is in the ImageError field of ImageContext.\r
295 @retval RETURN_INVALID_PARAMETER The image address is invalid.\r
296 Extended status information is in the ImageError field of ImageContext.\r
297\r
298**/\r
299RETURN_STATUS\r
300EFIAPI\r
301PeCoffLoaderLoadImage (\r
302 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r
ed66e1bc 303 );\r
fb3df220 304\r
305\r
306/**\r
badcbfb2 307 Reads contents of a PE/COFF image from a buffer in system memory.\r
308 \r
309 This is the default implementation of a PE_COFF_LOADER_READ_FILE function \r
310 that assumes FileHandle pointer to the beginning of a PE/COFF image. \r
311 This function reads contents of the PE/COFF image that starts at the system memory \r
1a2f870c 312 address specified by FileHandle. The read operation copies ReadSize bytes from the \r
badcbfb2 313 PE/COFF image starting at byte offset FileOffset into the buffer specified by Buffer. \r
314 The size of the buffer actually read is returned in ReadSize.\r
315 \r
316 If FileHandle is NULL, then ASSERT().\r
317 If ReadSize is NULL, then ASSERT().\r
318 If Buffer is NULL, then ASSERT().\r
fb3df220 319\r
af2dc6a7 320 @param FileHandle The pointer to base of the input stream\r
badcbfb2 321 @param FileOffset Offset into the PE/COFF image to begin the read operation.\r
322 @param ReadSize On input, the size in bytes of the requested read operation. \r
323 On output, the number of bytes actually read.\r
324 @param Buffer Output buffer that contains the data read from the PE/COFF image.\r
fb3df220 325\r
af2dc6a7 326 @retval RETURN_SUCCESS The data is read from FileOffset from the Handle into \r
fb3df220 327 the buffer.\r
328**/\r
329RETURN_STATUS\r
330EFIAPI\r
331PeCoffLoaderImageReadFromMemory (\r
332 IN VOID *FileHandle,\r
333 IN UINTN FileOffset,\r
334 IN OUT UINTN *ReadSize,\r
335 OUT VOID *Buffer\r
ed66e1bc 336 );\r
fb3df220 337\r
338\r
339/**\r
340 Reapply fixups on a fixed up PE32/PE32+ image to allow virutal calling at EFI\r
341 runtime. \r
342 \r
9833a9bb
LG
343 This function reapplies relocation fixups to the PE/COFF image specified by ImageBase \r
344 and ImageSize so the image will execute correctly when the PE/COFF image is mapped \r
1a2f870c 345 to the address specified by VirtualImageBase. RelocationData must be identical \r
9833a9bb
LG
346 to the FiuxupData buffer from the PE_COFF_LOADER_IMAGE_CONTEXT structure \r
347 after this PE/COFF image was relocated with PeCoffLoaderRelocateImage().\r
fb3df220 348\r
8d579453 349 Note that if the platform does not maintain coherency between the instruction cache(s) and the data\r
350 cache(s) in hardware, then the caller is responsible for performing cache maintenance operations\r
351 prior to transferring control to a PE/COFF image that is loaded using this library.\r
352\r
af2dc6a7 353 @param ImageBase The base address of a PE/COFF image that has been loaded \r
badcbfb2 354 and relocated into system memory.\r
355 @param VirtImageBase The request virtual address that the PE/COFF image is to\r
356 be fixed up for.\r
357 @param ImageSize The size, in bytes, of the PE/COFF image.\r
358 @param RelocationData A pointer to the relocation data that was collected when the PE/COFF \r
359 image was relocated using PeCoffLoaderRelocateImage().\r
fb3df220 360 \r
361**/\r
362VOID\r
363EFIAPI\r
364PeCoffLoaderRelocateImageForRuntime (\r
365 IN PHYSICAL_ADDRESS ImageBase,\r
366 IN PHYSICAL_ADDRESS VirtImageBase,\r
367 IN UINTN ImageSize,\r
368 IN VOID *RelocationData\r
ed66e1bc 369 );\r
fb3df220 370\r
3d7b0992
LG
371/**\r
372 Unloads a loaded PE/COFF image from memory and releases its taken resource.\r
badcbfb2 373 Releases any environment specific resources that were allocated when the image \r
374 specified by ImageContext was loaded using PeCoffLoaderLoadImage(). \r
375 \r
3d7b0992
LG
376 For NT32 emulator, the PE/COFF image loaded by system needs to release.\r
377 For real platform, the PE/COFF image loaded by Core doesn't needs to be unloaded, \r
378 this function can simply return RETURN_SUCCESS.\r
badcbfb2 379 \r
380 If ImageContext is NULL, then ASSERT().\r
381 \r
3d7b0992
LG
382 @param ImageContext Pointer to the image context structure that describes the PE/COFF\r
383 image to be unloaded.\r
fb3df220 384\r
3d7b0992
LG
385 @retval RETURN_SUCCESS The PE/COFF image was unloaded successfully.\r
386**/\r
387RETURN_STATUS\r
388EFIAPI\r
389PeCoffLoaderUnloadImage (\r
0465a73e 390 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r
ed66e1bc 391 );\r
fb3df220 392#endif\r