1 /** @file 2 3 Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> 4 Portions copyright (c) 2010, Apple Inc. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 15 #ifndef __PE_COFF_LOADER_H__ 16 #define __PE_COFF_LOADER_H__ 17 18 // Needed for PE_COFF_LOADER_IMAGE_CONTEXT 19 #include <Library/PeCoffLib.h> 20 21 // B323179B-97FB-477E-B0FE-D88591FA11AB 22 #define PE_COFF_LOADER_PROTOCOL_GUID \ 23 { 0xB323179B, 0x97FB, 0x477E, { 0xB0, 0xFE, 0xD8, 0x85, 0x91, 0xFA, 0x11, 0xAB } } 24 25 26 typedef struct _PE_COFF_LOADER_PROTOCOL PE_COFF_LOADER_PROTOCOL; 27 28 29 30 /** 31 Retrieves information about a PE/COFF image. 32 33 Computes the PeCoffHeaderOffset, IsTeImage, ImageType, ImageAddress, ImageSize, 34 DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, and 35 DebugDirectoryEntryRva fields of the ImageContext structure. 36 If ImageContext is NULL, then return RETURN_INVALID_PARAMETER. 37 If the PE/COFF image accessed through the ImageRead service in the ImageContext 38 structure is not a supported PE/COFF image type, then return RETURN_UNSUPPORTED. 39 If any errors occur while computing the fields of ImageContext, 40 then the error status is returned in the ImageError field of ImageContext. 41 If the image is a TE image, then SectionAlignment is set to 0. 42 The ImageRead and Handle fields of ImageContext structure must be valid prior 43 to invoking this service. 44 45 @param ImageContext Pointer to the image context structure that describes the PE/COFF 46 image that needs to be examined by this function. 47 48 @retval RETURN_SUCCESS The information on the PE/COFF image was collected. 49 @retval RETURN_INVALID_PARAMETER ImageContext is NULL. 50 @retval RETURN_UNSUPPORTED The PE/COFF image is not supported. 51 52 **/ 53 typedef 54 RETURN_STATUS 55 (EFIAPI *PE_COFF_LOADER_GET_IMAGE_INFO) ( 56 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext 57 ); 58 59 60 /** 61 Applies relocation fixups to a PE/COFF image that was loaded with PeCoffLoaderLoadImage(). 62 63 If the DestinationAddress field of ImageContext is 0, then use the ImageAddress field of 64 ImageContext as the relocation base address. Otherwise, use the DestinationAddress field 65 of ImageContext as the relocation base address. The caller must allocate the relocation 66 fixup log buffer and fill in the FixupData field of ImageContext prior to calling this function. 67 68 The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine, ImageType, ImageAddress, 69 ImageSize, DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, 70 DebugDirectoryEntryRva, EntryPoint, FixupDataSize, CodeView, PdbPointer, and FixupData of 71 the ImageContext structure must be valid prior to invoking this service. 72 73 If ImageContext is NULL, then ASSERT(). 74 75 Note that if the platform does not maintain coherency between the instruction cache(s) and the data 76 cache(s) in hardware, then the caller is responsible for performing cache maintenance operations 77 prior to transferring control to a PE/COFF image that is loaded using this library. 78 79 @param ImageContext Pointer to the image context structure that describes the PE/COFF 80 image that is being relocated. 81 82 @retval RETURN_SUCCESS The PE/COFF image was relocated. 83 Extended status information is in the ImageError field of ImageContext. 84 @retval RETURN_LOAD_ERROR The image in not a valid PE/COFF image. 85 Extended status information is in the ImageError field of ImageContext. 86 @retval RETURN_UNSUPPORTED A relocation record type is not supported. 87 Extended status information is in the ImageError field of ImageContext. 88 89 **/ 90 typedef 91 RETURN_STATUS 92 (EFIAPI *PE_COFF_LOADER_RELOCATE_IMAGE) ( 93 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext 94 ); 95 96 97 /** 98 Loads a PE/COFF image into memory. 99 100 Loads the PE/COFF image accessed through the ImageRead service of ImageContext into the buffer 101 specified by the ImageAddress and ImageSize fields of ImageContext. The caller must allocate 102 the load buffer and fill in the ImageAddress and ImageSize fields prior to calling this function. 103 The EntryPoint, FixupDataSize, CodeView, PdbPointer and HiiResourceData fields of ImageContext are computed. 104 The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine, ImageType, ImageAddress, ImageSize, 105 DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, and DebugDirectoryEntryRva 106 fields of the ImageContext structure must be valid prior to invoking this service. 107 108 If ImageContext is NULL, then ASSERT(). 109 110 Note that if the platform does not maintain coherency between the instruction cache(s) and the data 111 cache(s) in hardware, then the caller is responsible for performing cache maintenance operations 112 prior to transferring control to a PE/COFF image that is loaded using this library. 113 114 @param ImageContext Pointer to the image context structure that describes the PE/COFF 115 image that is being loaded. 116 117 @retval RETURN_SUCCESS The PE/COFF image was loaded into the buffer specified by 118 the ImageAddress and ImageSize fields of ImageContext. 119 Extended status information is in the ImageError field of ImageContext. 120 @retval RETURN_BUFFER_TOO_SMALL The caller did not provide a large enough buffer. 121 Extended status information is in the ImageError field of ImageContext. 122 @retval RETURN_LOAD_ERROR The PE/COFF image is an EFI Runtime image with no relocations. 123 Extended status information is in the ImageError field of ImageContext. 124 @retval RETURN_INVALID_PARAMETER The image address is invalid. 125 Extended status information is in the ImageError field of ImageContext. 126 127 **/ 128 typedef 129 RETURN_STATUS 130 (EFIAPI *PE_COFF_LOADER_LOAD_IMAGE) ( 131 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext 132 ); 133 134 135 136 /** 137 Reads contents of a PE/COFF image from a buffer in system memory. 138 139 This is the default implementation of a PE_COFF_LOADER_READ_FILE function 140 that assumes FileHandle pointer to the beginning of a PE/COFF image. 141 This function reads contents of the PE/COFF image that starts at the system memory 142 address specified by FileHandle. The read operation copies ReadSize bytes from the 143 PE/COFF image starting at byte offset FileOffset into the buffer specified by Buffer. 144 The size of the buffer actually read is returned in ReadSize. 145 146 If FileHandle is NULL, then ASSERT(). 147 If ReadSize is NULL, then ASSERT(). 148 If Buffer is NULL, then ASSERT(). 149 150 @param FileHandle Pointer to base of the input stream 151 @param FileOffset Offset into the PE/COFF image to begin the read operation. 152 @param ReadSize On input, the size in bytes of the requested read operation. 153 On output, the number of bytes actually read. 154 @param Buffer Output buffer that contains the data read from the PE/COFF image. 155 156 @retval RETURN_SUCCESS Data is read from FileOffset from the Handle into 157 the buffer. 158 **/ 159 typedef 160 RETURN_STATUS 161 (EFIAPI *PE_COFF_LOADER_READ_FROM_MEMORY) ( 162 IN VOID *FileHandle, 163 IN UINTN FileOffset, 164 IN OUT UINTN *ReadSize, 165 OUT VOID *Buffer 166 ); 167 168 169 170 /** 171 Reapply fixups on a fixed up PE32/PE32+ image to allow virutal calling at EFI 172 runtime. 173 174 This function reapplies relocation fixups to the PE/COFF image specified by ImageBase 175 and ImageSize so the image will execute correctly when the PE/COFF image is mapped 176 to the address specified by VirtualImageBase. RelocationData must be identical 177 to the FiuxupData buffer from the PE_COFF_LOADER_IMAGE_CONTEXT structure 178 after this PE/COFF image was relocated with PeCoffLoaderRelocateImage(). 179 180 Note that if the platform does not maintain coherency between the instruction cache(s) and the data 181 cache(s) in hardware, then the caller is responsible for performing cache maintenance operations 182 prior to transferring control to a PE/COFF image that is loaded using this library. 183 184 @param ImageBase Base address of a PE/COFF image that has been loaded 185 and relocated into system memory. 186 @param VirtImageBase The request virtual address that the PE/COFF image is to 187 be fixed up for. 188 @param ImageSize The size, in bytes, of the PE/COFF image. 189 @param RelocationData A pointer to the relocation data that was collected when the PE/COFF 190 image was relocated using PeCoffLoaderRelocateImage(). 191 192 **/ 193 typedef 194 VOID 195 (EFIAPI *PE_COFF_LOADER_RELOCATE_IMAGE_FOR_RUNTIME) ( 196 IN PHYSICAL_ADDRESS ImageBase, 197 IN PHYSICAL_ADDRESS VirtImageBase, 198 IN UINTN ImageSize, 199 IN VOID *RelocationData 200 ); 201 202 203 204 /** 205 Unloads a loaded PE/COFF image from memory and releases its taken resource. 206 Releases any environment specific resources that were allocated when the image 207 specified by ImageContext was loaded using PeCoffLoaderLoadImage(). 208 209 For NT32 emulator, the PE/COFF image loaded by system needs to release. 210 For real platform, the PE/COFF image loaded by Core doesn't needs to be unloaded, 211 this function can simply return RETURN_SUCCESS. 212 213 If ImageContext is NULL, then ASSERT(). 214 215 @param ImageContext Pointer to the image context structure that describes the PE/COFF 216 image to be unloaded. 217 218 @retval RETURN_SUCCESS The PE/COFF image was unloaded successfully. 219 **/ 220 typedef 221 RETURN_STATUS 222 (EFIAPI *PE_COFF_LOADER_UNLOAD_IMAGE) ( 223 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext 224 ); 225 226 227 struct _PE_COFF_LOADER_PROTOCOL { 228 PE_COFF_LOADER_GET_IMAGE_INFO GetImageInfo; 229 PE_COFF_LOADER_LOAD_IMAGE LoadImage; 230 PE_COFF_LOADER_RELOCATE_IMAGE RelocateImage; 231 PE_COFF_LOADER_READ_FROM_MEMORY ReadFromMemory; 232 PE_COFF_LOADER_RELOCATE_IMAGE_FOR_RUNTIME RelocateImageForRuntime; 233 PE_COFF_LOADER_UNLOAD_IMAGE UnloadImage; 234 }; 235 236 237 extern EFI_GUID gPeCoffLoaderProtocolGuid; 238 239 240 #endif 241 242