+++ /dev/null
-/*++\r
-\r
-Copyright (c) 2004 - 2005, Intel Corporation \r
-All rights reserved. This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php \r
- \r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
-\r
-Module Name:\r
-\r
- PeCoffLoader.c\r
-\r
-Abstract:\r
-\r
- Tiano PE/COFF loader \r
-\r
-Revision History\r
-\r
---*/\r
-\r
-\r
-#include <Common/UefiBaseTypes.h>\r
-#include <Common/EfiImage.h>\r
-#include <Library/PeCoffLib.h>\r
-\r
-STATIC\r
-RETURN_STATUS\r
-PeCoffLoaderGetPeHeader (\r
- IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,\r
- OUT EFI_IMAGE_NT_HEADERS *PeHdr,\r
- OUT EFI_TE_IMAGE_HEADER *TeHdr\r
- );\r
-\r
-STATIC\r
-RETURN_STATUS\r
-PeCoffLoaderCheckImageType (\r
- IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,\r
- IN EFI_IMAGE_NT_HEADERS *PeHdr,\r
- IN EFI_TE_IMAGE_HEADER *TeHdr\r
- );\r
-\r
-STATIC\r
-VOID *\r
-PeCoffLoaderImageAddress (\r
- IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,\r
- IN UINTN Address\r
- );\r
-\r
-\r
-STATIC\r
-RETURN_STATUS\r
-PeCoffLoaderGetPeHeader (\r
- IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,\r
- OUT EFI_IMAGE_NT_HEADERS *PeHdr,\r
- OUT EFI_TE_IMAGE_HEADER *TeHdr\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Retrieves the PE or TE Header from a PE/COFF or TE image\r
-\r
-Arguments:\r
-\r
- ImageContext - The context of the image being loaded\r
-\r
- PeHdr - The buffer in which to return the PE header\r
- \r
- TeHdr - The buffer in which to return the TE header\r
-\r
-Returns:\r
-\r
- RETURN_SUCCESS if the PE or TE Header is read, \r
- Otherwise, the error status from reading the PE/COFF or TE image using the ImageRead function.\r
-\r
---*/\r
-{\r
- RETURN_STATUS Status;\r
- EFI_IMAGE_DOS_HEADER DosHdr;\r
- UINTN Size;\r
-\r
- ImageContext->IsTeImage = FALSE;\r
- //\r
- // Read the DOS image headers\r
- //\r
- Size = sizeof (EFI_IMAGE_DOS_HEADER);\r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- 0,\r
- &Size,\r
- &DosHdr\r
- );\r
- if (RETURN_ERROR (Status)) {\r
- ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;\r
- return Status;\r
- }\r
-\r
- ImageContext->PeCoffHeaderOffset = 0;\r
- if (DosHdr.e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r
- //\r
- // DOS image header is present, so read the PE header after the DOS image header\r
- //\r
- ImageContext->PeCoffHeaderOffset = DosHdr.e_lfanew;\r
- }\r
- //\r
- // Read the PE/COFF Header\r
- //\r
- Size = sizeof (EFI_IMAGE_NT_HEADERS);\r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- ImageContext->PeCoffHeaderOffset,\r
- &Size,\r
- PeHdr\r
- );\r
- if (RETURN_ERROR (Status)) {\r
- ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;\r
- return Status;\r
- }\r
- //\r
- // Check the PE/COFF Header Signature. If not, then try to read a TE header\r
- //\r
- if (PeHdr->Signature != EFI_IMAGE_NT_SIGNATURE) {\r
- Size = sizeof (EFI_TE_IMAGE_HEADER);\r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- 0,\r
- &Size,\r
- TeHdr\r
- );\r
- if (TeHdr->Signature != EFI_TE_IMAGE_HEADER_SIGNATURE) {\r
- return RETURN_UNSUPPORTED;\r
- }\r
-\r
- ImageContext->IsTeImage = TRUE;\r
- }\r
-\r
- return RETURN_SUCCESS;\r
-}\r
-\r
-STATIC\r
-RETURN_STATUS\r
-PeCoffLoaderCheckImageType (\r
- IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,\r
- IN EFI_IMAGE_NT_HEADERS *PeHdr,\r
- IN EFI_TE_IMAGE_HEADER *TeHdr\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Checks the PE or TE header of a PE/COFF or TE image to determine if it supported\r
-\r
-Arguments:\r
-\r
- ImageContext - The context of the image being loaded\r
-\r
- PeHdr - The buffer in which to return the PE header\r
- \r
- TeHdr - The buffer in which to return the TE header\r
-\r
-Returns:\r
-\r
- RETURN_SUCCESS if the PE/COFF or TE image is supported\r
- RETURN_UNSUPPORTED of the PE/COFF or TE image is not supported.\r
-\r
---*/\r
-{\r
- //\r
- // See if the machine type is supported. We support a native machine type (IA-32/Itanium-based)\r
- // and the machine type for the Virtual Machine.\r
- //\r
- if (ImageContext->IsTeImage == FALSE) {\r
- ImageContext->Machine = PeHdr->FileHeader.Machine;\r
- } else {\r
- ImageContext->Machine = TeHdr->Machine;\r
- }\r
-\r
- if (!(EFI_IMAGE_MACHINE_TYPE_SUPPORTED (ImageContext->Machine))) {\r
- ImageContext->ImageError = IMAGE_ERROR_INVALID_MACHINE_TYPE;\r
- return RETURN_UNSUPPORTED;\r
- }\r
-\r
- //\r
- // See if the image type is supported. We support EFI Applications,\r
- // EFI Boot Service Drivers, and EFI Runtime Drivers.\r
- //\r
- if (ImageContext->IsTeImage == FALSE) {\r
- ImageContext->ImageType = PeHdr->OptionalHeader.Subsystem;\r
- } else {\r
- ImageContext->ImageType = (UINT16) (TeHdr->Subsystem);\r
- }\r
-\r
-\r
- return RETURN_SUCCESS;\r
-}\r
-\r
-RETURN_STATUS\r
-EFIAPI\r
-PeCoffLoaderGetImageInfo (\r
- IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Retrieves information on a PE/COFF image\r
-\r
-Arguments:\r
-\r
- This - Calling context\r
- ImageContext - The context of the image being loaded\r
-\r
-Returns:\r
-\r
- RETURN_SUCCESS - The information on the PE/COFF image was collected.\r
- RETURN_INVALID_PARAMETER - ImageContext is NULL.\r
- RETURN_UNSUPPORTED - The PE/COFF image is not supported.\r
- Otherwise - The error status from reading the PE/COFF image using the\r
- ImageContext->ImageRead() function\r
-\r
---*/\r
-{\r
- RETURN_STATUS Status;\r
- EFI_IMAGE_NT_HEADERS PeHdr;\r
- EFI_TE_IMAGE_HEADER TeHdr;\r
- EFI_IMAGE_DATA_DIRECTORY *DebugDirectoryEntry;\r
- UINTN Size;\r
- UINTN Index;\r
- UINTN DebugDirectoryEntryRva;\r
- UINTN DebugDirectoryEntryFileOffset;\r
- UINTN SectionHeaderOffset;\r
- EFI_IMAGE_SECTION_HEADER SectionHeader;\r
- EFI_IMAGE_DEBUG_DIRECTORY_ENTRY DebugEntry;\r
-\r
- if (NULL == ImageContext) {\r
- return RETURN_INVALID_PARAMETER;\r
- }\r
- //\r
- // Assume success\r
- //\r
- ImageContext->ImageError = IMAGE_ERROR_SUCCESS;\r
-\r
- Status = PeCoffLoaderGetPeHeader (ImageContext, &PeHdr, &TeHdr);\r
- if (RETURN_ERROR (Status)) {\r
- return Status;\r
- }\r
- //\r
- // Verify machine type\r
- //\r
- Status = PeCoffLoaderCheckImageType (ImageContext, &PeHdr, &TeHdr);\r
- if (RETURN_ERROR (Status)) {\r
- return Status;\r
- }\r
- //\r
- // Retrieve the base address of the image\r
- //\r
- if (!(ImageContext->IsTeImage)) {\r
- ImageContext->ImageAddress = PeHdr.OptionalHeader.ImageBase;\r
- } else {\r
- ImageContext->ImageAddress = (PHYSICAL_ADDRESS) (TeHdr.ImageBase + TeHdr.StrippedSize - sizeof (EFI_TE_IMAGE_HEADER));\r
- }\r
- //\r
- // Initialize the alternate destination address to 0 indicating that it\r
- // should not be used.\r
- //\r
- ImageContext->DestinationAddress = 0;\r
-\r
- //\r
- // Initialize the codeview pointer.\r
- //\r
- ImageContext->CodeView = NULL;\r
- ImageContext->PdbPointer = NULL;\r
-\r
- //\r
- // Three cases with regards to relocations:\r
- // - Image has base relocs, RELOCS_STRIPPED==0 => image is relocatable\r
- // - Image has no base relocs, RELOCS_STRIPPED==1 => Image is not relocatable\r
- // - Image has no base relocs, RELOCS_STRIPPED==0 => Image is relocatable but\r
- // has no base relocs to apply\r
- // Obviously having base relocations with RELOCS_STRIPPED==1 is invalid.\r
- //\r
- // Look at the file header to determine if relocations have been stripped, and\r
- // save this info in the image context for later use.\r
- //\r
- if ((!(ImageContext->IsTeImage)) && ((PeHdr.FileHeader.Characteristics & EFI_IMAGE_FILE_RELOCS_STRIPPED) != 0)) {\r
- ImageContext->RelocationsStripped = TRUE;\r
- } else {\r
- ImageContext->RelocationsStripped = FALSE;\r
- }\r
-\r
- if (!(ImageContext->IsTeImage)) {\r
- ImageContext->ImageSize = (UINT64) PeHdr.OptionalHeader.SizeOfImage;\r
- ImageContext->SectionAlignment = PeHdr.OptionalHeader.SectionAlignment;\r
- ImageContext->SizeOfHeaders = PeHdr.OptionalHeader.SizeOfHeaders;\r
-\r
- //\r
- // Modify ImageSize to contain .PDB file name if required and initialize\r
- // PdbRVA field...\r
- //\r
- if (PeHdr.OptionalHeader.NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_DEBUG) {\r
- DebugDirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *) &(PeHdr.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);\r
-\r
- DebugDirectoryEntryRva = DebugDirectoryEntry->VirtualAddress;\r
-\r
- //\r
- // Determine the file offset of the debug directory... This means we walk\r
- // the sections to find which section contains the RVA of the debug\r
- // directory\r
- //\r
- DebugDirectoryEntryFileOffset = 0;\r
-\r
- SectionHeaderOffset = (UINTN)(\r
- ImageContext->PeCoffHeaderOffset +\r
- sizeof (UINT32) + \r
- sizeof (EFI_IMAGE_FILE_HEADER) + \r
- PeHdr.FileHeader.SizeOfOptionalHeader\r
- );\r
-\r
- for (Index = 0; Index < PeHdr.FileHeader.NumberOfSections; Index++) {\r
- //\r
- // Read section header from file\r
- //\r
- Size = sizeof (EFI_IMAGE_SECTION_HEADER);\r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- SectionHeaderOffset,\r
- &Size,\r
- &SectionHeader\r
- );\r
- if (RETURN_ERROR (Status)) {\r
- ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;\r
- return Status;\r
- }\r
-\r
- if (DebugDirectoryEntryRva >= SectionHeader.VirtualAddress &&\r
- DebugDirectoryEntryRva < SectionHeader.VirtualAddress + SectionHeader.Misc.VirtualSize) {\r
- DebugDirectoryEntryFileOffset =\r
- DebugDirectoryEntryRva - SectionHeader.VirtualAddress + SectionHeader.PointerToRawData;\r
- break;\r
- }\r
-\r
- SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);\r
- }\r
-\r
- if (DebugDirectoryEntryFileOffset != 0) { \r
- for (Index = 0; Index < DebugDirectoryEntry->Size; Index += sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY)) {\r
- //\r
- // Read next debug directory entry\r
- //\r
- Size = sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY); \r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- DebugDirectoryEntryFileOffset,\r
- &Size,\r
- &DebugEntry\r
- );\r
- if (RETURN_ERROR (Status)) {\r
- ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;\r
- return Status;\r
- }\r
-\r
- if (DebugEntry.Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {\r
- ImageContext->DebugDirectoryEntryRva = (UINT32) (DebugDirectoryEntryRva + Index);\r
- if (DebugEntry.RVA == 0 && DebugEntry.FileOffset != 0) {\r
- ImageContext->ImageSize += DebugEntry.SizeOfData;\r
- }\r
-\r
- return RETURN_SUCCESS;\r
- }\r
- }\r
- }\r
- }\r
- } else {\r
- ImageContext->ImageSize = 0;\r
- ImageContext->SectionAlignment = 4096;\r
- ImageContext->SizeOfHeaders = sizeof (EFI_TE_IMAGE_HEADER) + (UINTN) TeHdr.BaseOfCode - (UINTN) TeHdr.StrippedSize;\r
-\r
- DebugDirectoryEntry = &TeHdr.DataDirectory[1];\r
- DebugDirectoryEntryRva = DebugDirectoryEntry->VirtualAddress;\r
- SectionHeaderOffset = (UINTN) (sizeof (EFI_TE_IMAGE_HEADER));\r
-\r
- DebugDirectoryEntryFileOffset = 0;\r
-\r
- for (Index = 0; Index < TeHdr.NumberOfSections;) {\r
- //\r
- // Read section header from file\r
- //\r
- Size = sizeof (EFI_IMAGE_SECTION_HEADER);\r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- SectionHeaderOffset,\r
- &Size,\r
- &SectionHeader\r
- );\r
- if (RETURN_ERROR (Status)) {\r
- ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;\r
- return Status;\r
- }\r
-\r
- if (DebugDirectoryEntryRva >= SectionHeader.VirtualAddress &&\r
- DebugDirectoryEntryRva < SectionHeader.VirtualAddress + SectionHeader.Misc.VirtualSize) {\r
- DebugDirectoryEntryFileOffset = DebugDirectoryEntryRva -\r
- SectionHeader.VirtualAddress +\r
- SectionHeader.PointerToRawData +\r
- sizeof (EFI_TE_IMAGE_HEADER) -\r
- TeHdr.StrippedSize;\r
-\r
- //\r
- // File offset of the debug directory was found, if this is not the last\r
- // section, then skip to the last section for calculating the image size.\r
- //\r
- if (Index < (UINTN) TeHdr.NumberOfSections - 1) {\r
- SectionHeaderOffset += (TeHdr.NumberOfSections - 1 - Index) * sizeof (EFI_IMAGE_SECTION_HEADER);\r
- Index = TeHdr.NumberOfSections - 1;\r
- continue;\r
- }\r
- }\r
-\r
- //\r
- // In Te image header there is not a field to describe the ImageSize.\r
- // Actually, the ImageSize equals the RVA plus the VirtualSize of \r
- // the last section mapped into memory (Must be rounded up to \r
- // a mulitple of Section Alignment). Per the PE/COFF specification, the\r
- // section headers in the Section Table must appear in order of the RVA\r
- // values for the corresponding sections. So the ImageSize can be determined\r
- // by the RVA and the VirtualSize of the last section header in the\r
- // Section Table.\r
- //\r
- if ((++Index) == (UINTN) TeHdr.NumberOfSections) {\r
- ImageContext->ImageSize = (SectionHeader.VirtualAddress + SectionHeader.Misc.VirtualSize +\r
- ImageContext->SectionAlignment - 1) & ~(ImageContext->SectionAlignment - 1);\r
- }\r
-\r
- SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);\r
- }\r
-\r
- if (DebugDirectoryEntryFileOffset != 0) {\r
- for (Index = 0; Index < DebugDirectoryEntry->Size; Index += sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY)) {\r
- //\r
- // Read next debug directory entry\r
- //\r
- Size = sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- DebugDirectoryEntryFileOffset,\r
- &Size,\r
- &DebugEntry\r
- );\r
- if (RETURN_ERROR (Status)) {\r
- ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;\r
- return Status;\r
- }\r
-\r
- if (DebugEntry.Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {\r
- ImageContext->DebugDirectoryEntryRva = (UINT32) (DebugDirectoryEntryRva + Index);\r
- return RETURN_SUCCESS;\r
- }\r
- }\r
- }\r
- }\r
-\r
- return RETURN_SUCCESS;\r
-}\r
-\r
-STATIC\r
-VOID *\r
-PeCoffLoaderImageAddress (\r
- IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,\r
- IN UINTN Address\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Converts an image address to the loaded address\r
-\r
-Arguments:\r
-\r
- ImageContext - The context of the image being loaded\r
-\r
- Address - The address to be converted to the loaded address\r
-\r
-Returns:\r
-\r
- NULL if the address can not be converted, otherwise, the converted address\r
-\r
---*/\r
-{\r
- if (Address >= ImageContext->ImageSize) {\r
- ImageContext->ImageError = IMAGE_ERROR_INVALID_IMAGE_ADDRESS;\r
- return NULL;\r
- }\r
-\r
- return (CHAR8 *) ((UINTN) ImageContext->ImageAddress + Address);\r
-}\r
-\r
-RETURN_STATUS\r
-EFIAPI\r
-PeCoffLoaderRelocateImage (\r
- IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Relocates a PE/COFF image in memory\r
-\r
-Arguments:\r
-\r
- This - Calling context\r
-\r
- ImageContext - Contains information on the loaded image to relocate\r
-\r
-Returns:\r
-\r
- RETURN_SUCCESS if the PE/COFF image was relocated\r
- RETURN_LOAD_ERROR if the image is not a valid PE/COFF image\r
- RETURN_UNSUPPORTED not support\r
-\r
---*/\r
-{\r
- RETURN_STATUS Status;\r
- EFI_IMAGE_NT_HEADERS *PeHdr;\r
- EFI_TE_IMAGE_HEADER *TeHdr;\r
- EFI_IMAGE_DATA_DIRECTORY *RelocDir;\r
- UINT64 Adjust;\r
- EFI_IMAGE_BASE_RELOCATION *RelocBase;\r
- EFI_IMAGE_BASE_RELOCATION *RelocBaseEnd;\r
- UINT16 *Reloc;\r
- UINT16 *RelocEnd;\r
- CHAR8 *Fixup;\r
- CHAR8 *FixupBase;\r
- UINT16 *F16;\r
- UINT32 *F32;\r
- CHAR8 *FixupData;\r
- PHYSICAL_ADDRESS BaseAddress;\r
-\r
- PeHdr = NULL;\r
- TeHdr = NULL;\r
- //\r
- // Assume success\r
- //\r
- ImageContext->ImageError = IMAGE_ERROR_SUCCESS;\r
-\r
- //\r
- // If there are no relocation entries, then we are done\r
- //\r
- if (ImageContext->RelocationsStripped) {\r
- return RETURN_SUCCESS;\r
- }\r
-\r
- //\r
- // If the destination address is not 0, use that rather than the\r
- // image address as the relocation target.\r
- //\r
- if (ImageContext->DestinationAddress) {\r
- BaseAddress = ImageContext->DestinationAddress;\r
- } else {\r
- BaseAddress = ImageContext->ImageAddress;\r
- }\r
-\r
- if (!(ImageContext->IsTeImage)) {\r
- PeHdr = (EFI_IMAGE_NT_HEADERS *)((UINTN)ImageContext->ImageAddress + \r
- ImageContext->PeCoffHeaderOffset);\r
- Adjust = (UINT64) BaseAddress - PeHdr->OptionalHeader.ImageBase;\r
- PeHdr->OptionalHeader.ImageBase = (UINTN) BaseAddress;\r
-\r
- //\r
- // Find the relocation block\r
- //\r
- // Per the PE/COFF spec, you can't assume that a given data directory\r
- // is present in the image. You have to check the NumberOfRvaAndSizes in\r
- // the optional header to verify a desired directory entry is there.\r
- //\r
- if (PeHdr->OptionalHeader.NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC) {\r
- RelocDir = &PeHdr->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];\r
- RelocBase = PeCoffLoaderImageAddress (ImageContext, RelocDir->VirtualAddress);\r
- RelocBaseEnd = PeCoffLoaderImageAddress (\r
- ImageContext,\r
- RelocDir->VirtualAddress + RelocDir->Size - 1\r
- );\r
- } else {\r
- //\r
- // Set base and end to bypass processing below.\r
- //\r
- RelocBase = RelocBaseEnd = 0;\r
- }\r
- } else {\r
- TeHdr = (EFI_TE_IMAGE_HEADER *) (UINTN) (ImageContext->ImageAddress);\r
- Adjust = (UINT64) (BaseAddress - TeHdr->ImageBase);\r
- TeHdr->ImageBase = (UINT64) (BaseAddress);\r
-\r
- //\r
- // Find the relocation block\r
- //\r
- RelocDir = &TeHdr->DataDirectory[0];\r
- RelocBase = (EFI_IMAGE_BASE_RELOCATION *)(UINTN)(\r
- ImageContext->ImageAddress + \r
- RelocDir->VirtualAddress +\r
- sizeof(EFI_TE_IMAGE_HEADER) - \r
- TeHdr->StrippedSize\r
- );\r
- RelocBaseEnd = (EFI_IMAGE_BASE_RELOCATION *) ((UINTN) RelocBase + (UINTN) RelocDir->Size - 1);\r
- }\r
- \r
- //\r
- // Run the relocation information and apply the fixups\r
- //\r
- FixupData = ImageContext->FixupData;\r
- while (RelocBase < RelocBaseEnd) {\r
-\r
- Reloc = (UINT16 *) ((CHAR8 *) RelocBase + sizeof (EFI_IMAGE_BASE_RELOCATION));\r
- RelocEnd = (UINT16 *) ((CHAR8 *) RelocBase + RelocBase->SizeOfBlock);\r
- if (!(ImageContext->IsTeImage)) {\r
- FixupBase = PeCoffLoaderImageAddress (ImageContext, RelocBase->VirtualAddress);\r
- } else {\r
- FixupBase = (CHAR8 *)(UINTN)(ImageContext->ImageAddress +\r
- RelocBase->VirtualAddress +\r
- sizeof(EFI_TE_IMAGE_HEADER) - \r
- TeHdr->StrippedSize\r
- );\r
- }\r
-\r
- if ((CHAR8 *) RelocEnd < (CHAR8 *) ((UINTN) ImageContext->ImageAddress) ||\r
- (CHAR8 *) RelocEnd > (CHAR8 *)((UINTN)ImageContext->ImageAddress + \r
- (UINTN)ImageContext->ImageSize)) {\r
- ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;\r
- return RETURN_LOAD_ERROR;\r
- }\r
-\r
- //\r
- // Run this relocation record\r
- //\r
- while (Reloc < RelocEnd) {\r
-\r
- Fixup = FixupBase + (*Reloc & 0xFFF);\r
- switch ((*Reloc) >> 12) {\r
- case EFI_IMAGE_REL_BASED_ABSOLUTE:\r
- break;\r
-\r
- case EFI_IMAGE_REL_BASED_HIGH:\r
- F16 = (UINT16 *) Fixup;\r
- *F16 = (UINT16) (*F16 + ((UINT16) ((UINT32) Adjust >> 16)));\r
- if (FixupData != NULL) {\r
- *(UINT16 *) FixupData = *F16;\r
- FixupData = FixupData + sizeof (UINT16);\r
- }\r
- break;\r
-\r
- case EFI_IMAGE_REL_BASED_LOW:\r
- F16 = (UINT16 *) Fixup;\r
- *F16 = (UINT16) (*F16 + (UINT16) Adjust);\r
- if (FixupData != NULL) {\r
- *(UINT16 *) FixupData = *F16;\r
- FixupData = FixupData + sizeof (UINT16);\r
- }\r
- break;\r
-\r
- case EFI_IMAGE_REL_BASED_HIGHLOW:\r
- F32 = (UINT32 *) Fixup;\r
- *F32 = *F32 + (UINT32) Adjust;\r
- if (FixupData != NULL) {\r
- FixupData = ALIGN_POINTER (FixupData, sizeof (UINT32));\r
- *(UINT32 *) FixupData = *F32;\r
- FixupData = FixupData + sizeof (UINT32);\r
- }\r
- break;\r
-\r
- case EFI_IMAGE_REL_BASED_HIGHADJ:\r
- //\r
- // Return the same EFI_UNSUPPORTED return code as\r
- // PeCoffLoaderRelocateImageEx() returns if it does not recognize\r
- // the relocation type.\r
- //\r
- ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;\r
- return RETURN_UNSUPPORTED;\r
-\r
- default:\r
- Status = PeCoffLoaderRelocateImageEx (Reloc, Fixup, &FixupData, Adjust);\r
- if (RETURN_ERROR (Status)) {\r
- ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;\r
- return Status;\r
- }\r
- }\r
-\r
- //\r
- // Next relocation record\r
- //\r
- Reloc += 1;\r
- }\r
-\r
- //\r
- // Next reloc block\r
- //\r
- RelocBase = (EFI_IMAGE_BASE_RELOCATION *) RelocEnd;\r
- }\r
-\r
- return RETURN_SUCCESS;\r
-}\r
-\r
-RETURN_STATUS\r
-EFIAPI\r
-PeCoffLoaderLoadImage (\r
- IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Loads a PE/COFF image into memory\r
-\r
-Arguments:\r
-\r
- This - Calling context\r
-\r
- ImageContext - Contains information on image to load into memory\r
-\r
-Returns:\r
-\r
- RETURN_SUCCESS if the PE/COFF image was loaded\r
- RETURN_BUFFER_TOO_SMALL if the caller did not provide a large enough buffer\r
- RETURN_LOAD_ERROR if the image is a runtime driver with no relocations\r
- RETURN_INVALID_PARAMETER if the image address is invalid\r
-\r
---*/\r
-{\r
- RETURN_STATUS Status;\r
- EFI_IMAGE_NT_HEADERS *PeHdr;\r
- EFI_TE_IMAGE_HEADER *TeHdr;\r
- PE_COFF_LOADER_IMAGE_CONTEXT CheckContext;\r
- EFI_IMAGE_SECTION_HEADER *FirstSection;\r
- EFI_IMAGE_SECTION_HEADER *Section;\r
- UINTN NumberOfSections;\r
- UINTN Index;\r
- CHAR8 *Base;\r
- CHAR8 *End;\r
- CHAR8 *MaxEnd;\r
- EFI_IMAGE_DATA_DIRECTORY *DirectoryEntry;\r
- EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *DebugEntry;\r
- UINTN Size;\r
- UINT32 TempDebugEntryRva;\r
-\r
- PeHdr = NULL;\r
- TeHdr = NULL;\r
- //\r
- // Assume success\r
- //\r
- ImageContext->ImageError = IMAGE_ERROR_SUCCESS;\r
-\r
- //\r
- // Copy the provided context info into our local version, get what we\r
- // can from the original image, and then use that to make sure everything\r
- // is legit.\r
- //\r
- CopyMem (&CheckContext, ImageContext, sizeof (PE_COFF_LOADER_IMAGE_CONTEXT));\r
-\r
- Status = PeCoffLoaderGetImageInfo (&CheckContext);\r
- if (RETURN_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Make sure there is enough allocated space for the image being loaded\r
- //\r
- if (ImageContext->ImageSize < CheckContext.ImageSize) {\r
- ImageContext->ImageError = IMAGE_ERROR_INVALID_IMAGE_SIZE;\r
- return RETURN_BUFFER_TOO_SMALL;\r
- }\r
-\r
- //\r
- // If there's no relocations, then make sure it's not a runtime driver,\r
- // and that it's being loaded at the linked address.\r
- //\r
- if (CheckContext.RelocationsStripped) {\r
- //\r
- // If the image does not contain relocations and it is a runtime driver\r
- // then return an error.\r
- //\r
- if (CheckContext.ImageType == EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER) {\r
- ImageContext->ImageError = IMAGE_ERROR_INVALID_SUBSYSTEM;\r
- return RETURN_LOAD_ERROR;\r
- }\r
- //\r
- // If the image does not contain relocations, and the requested load address\r
- // is not the linked address, then return an error.\r
- //\r
- if (CheckContext.ImageAddress != ImageContext->ImageAddress) {\r
- ImageContext->ImageError = IMAGE_ERROR_INVALID_IMAGE_ADDRESS;\r
- return RETURN_INVALID_PARAMETER;\r
- }\r
- }\r
- //\r
- // Make sure the allocated space has the proper section alignment\r
- //\r
- if (!(ImageContext->IsTeImage)) {\r
- if ((ImageContext->ImageAddress & (CheckContext.SectionAlignment - 1)) != 0) {\r
- ImageContext->ImageError = IMAGE_ERROR_INVALID_SECTION_ALIGNMENT;\r
- return RETURN_INVALID_PARAMETER;\r
- }\r
- }\r
- //\r
- // Read the entire PE/COFF or TE header into memory\r
- //\r
- if (!(ImageContext->IsTeImage)) {\r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- 0,\r
- &ImageContext->SizeOfHeaders,\r
- (VOID *) (UINTN) ImageContext->ImageAddress\r
- );\r
-\r
- PeHdr = (EFI_IMAGE_NT_HEADERS *)\r
- ((UINTN)ImageContext->ImageAddress + ImageContext->PeCoffHeaderOffset);\r
-\r
- FirstSection = (EFI_IMAGE_SECTION_HEADER *) (\r
- (UINTN)ImageContext->ImageAddress +\r
- ImageContext->PeCoffHeaderOffset +\r
- sizeof(UINT32) + \r
- sizeof(EFI_IMAGE_FILE_HEADER) + \r
- PeHdr->FileHeader.SizeOfOptionalHeader\r
- );\r
- NumberOfSections = (UINTN) (PeHdr->FileHeader.NumberOfSections);\r
- } else {\r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- 0,\r
- &ImageContext->SizeOfHeaders,\r
- (void *) (UINTN) ImageContext->ImageAddress\r
- );\r
-\r
- TeHdr = (EFI_TE_IMAGE_HEADER *) (UINTN) (ImageContext->ImageAddress);\r
-\r
- FirstSection = (EFI_IMAGE_SECTION_HEADER *) (\r
- (UINTN)ImageContext->ImageAddress +\r
- sizeof(EFI_TE_IMAGE_HEADER)\r
- );\r
- NumberOfSections = (UINTN) (TeHdr->NumberOfSections);\r
-\r
- }\r
-\r
- if (RETURN_ERROR (Status)) {\r
- ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;\r
- return RETURN_LOAD_ERROR;\r
- }\r
-\r
- //\r
- // Load each section of the image\r
- //\r
- Section = FirstSection;\r
- for (Index = 0, MaxEnd = NULL; Index < NumberOfSections; Index++) {\r
-\r
- //\r
- // Compute sections address\r
- //\r
- Base = PeCoffLoaderImageAddress (ImageContext, Section->VirtualAddress);\r
- End = PeCoffLoaderImageAddress (\r
- ImageContext,\r
- Section->VirtualAddress + Section->Misc.VirtualSize - 1\r
- );\r
- if (ImageContext->IsTeImage) {\r
- Base = (CHAR8 *) ((UINTN) Base + sizeof (EFI_TE_IMAGE_HEADER) - (UINTN) TeHdr->StrippedSize);\r
- End = (CHAR8 *) ((UINTN) End + sizeof (EFI_TE_IMAGE_HEADER) - (UINTN) TeHdr->StrippedSize);\r
- }\r
-\r
- if (End > MaxEnd) {\r
- MaxEnd = End;\r
- }\r
- //\r
- // If the base start or end address resolved to 0, then fail.\r
- //\r
- if ((Base == NULL) || (End == NULL)) {\r
- ImageContext->ImageError = IMAGE_ERROR_SECTION_NOT_LOADED;\r
- return RETURN_LOAD_ERROR;\r
- }\r
-\r
- //\r
- // Read the section\r
- //\r
- Size = (UINTN) Section->Misc.VirtualSize;\r
- if ((Size == 0) || (Size > Section->SizeOfRawData)) {\r
- Size = (UINTN) Section->SizeOfRawData;\r
- }\r
-\r
- if (Section->SizeOfRawData) {\r
- if (!(ImageContext->IsTeImage)) {\r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- Section->PointerToRawData,\r
- &Size,\r
- Base\r
- );\r
- } else {\r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- Section->PointerToRawData + sizeof (EFI_TE_IMAGE_HEADER) - (UINTN) TeHdr->StrippedSize,\r
- &Size,\r
- Base\r
- );\r
- }\r
-\r
- if (RETURN_ERROR (Status)) {\r
- ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;\r
- return Status;\r
- }\r
- }\r
-\r
- //\r
- // If raw size is less then virt size, zero fill the remaining\r
- //\r
-\r
- if (Size < Section->Misc.VirtualSize) {\r
- ZeroMem (Base + Size, Section->Misc.VirtualSize - Size);\r
- }\r
-\r
- //\r
- // Next Section\r
- //\r
- Section += 1;\r
- }\r
-\r
- //\r
- // Get image's entry point\r
- //\r
- if (!(ImageContext->IsTeImage)) {\r
- ImageContext->EntryPoint = (PHYSICAL_ADDRESS) (UINTN) PeCoffLoaderImageAddress (\r
- ImageContext,\r
- PeHdr->OptionalHeader.AddressOfEntryPoint\r
- );\r
- } else {\r
- ImageContext->EntryPoint = (PHYSICAL_ADDRESS) (\r
- (UINTN)ImageContext->ImageAddress +\r
- (UINTN)TeHdr->AddressOfEntryPoint +\r
- (UINTN)sizeof(EFI_TE_IMAGE_HEADER) -\r
- (UINTN) TeHdr->StrippedSize\r
- );\r
- }\r
-\r
- //\r
- // Determine the size of the fixup data\r
- //\r
- // Per the PE/COFF spec, you can't assume that a given data directory\r
- // is present in the image. You have to check the NumberOfRvaAndSizes in\r
- // the optional header to verify a desired directory entry is there.\r
- //\r
- if (!(ImageContext->IsTeImage)) {\r
- if (PeHdr->OptionalHeader.NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC) {\r
- DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)\r
- &PeHdr->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];\r
- ImageContext->FixupDataSize = DirectoryEntry->Size / sizeof (UINT16) * sizeof (UINTN);\r
- } else {\r
- ImageContext->FixupDataSize = 0;\r
- }\r
- } else {\r
- DirectoryEntry = &TeHdr->DataDirectory[0];\r
- ImageContext->FixupDataSize = DirectoryEntry->Size / sizeof (UINT16) * sizeof (UINTN);\r
- }\r
- //\r
- // Consumer must allocate a buffer for the relocation fixup log.\r
- // Only used for runtime drivers.\r
- //\r
- ImageContext->FixupData = NULL;\r
-\r
- //\r
- // Load the Codeview info if present\r
- //\r
- if (ImageContext->DebugDirectoryEntryRva != 0) {\r
- if (!(ImageContext->IsTeImage)) {\r
- DebugEntry = PeCoffLoaderImageAddress (\r
- ImageContext,\r
- ImageContext->DebugDirectoryEntryRva\r
- );\r
- } else {\r
- DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *)(UINTN)(\r
- ImageContext->ImageAddress +\r
- ImageContext->DebugDirectoryEntryRva +\r
- sizeof(EFI_TE_IMAGE_HEADER) -\r
- TeHdr->StrippedSize\r
- );\r
- }\r
-\r
- if (DebugEntry != NULL) {\r
- TempDebugEntryRva = DebugEntry->RVA;\r
- if (DebugEntry->RVA == 0 && DebugEntry->FileOffset != 0) {\r
- Section--;\r
- if ((UINTN) Section->SizeOfRawData < Section->Misc.VirtualSize) {\r
- TempDebugEntryRva = Section->VirtualAddress + Section->Misc.VirtualSize;\r
- } else {\r
- TempDebugEntryRva = Section->VirtualAddress + Section->SizeOfRawData;\r
- }\r
- }\r
-\r
- if (TempDebugEntryRva != 0) {\r
- if (!(ImageContext->IsTeImage)) {\r
- ImageContext->CodeView = PeCoffLoaderImageAddress (ImageContext, TempDebugEntryRva);\r
- } else {\r
- ImageContext->CodeView = (VOID *)(\r
- (UINTN)ImageContext->ImageAddress +\r
- (UINTN)TempDebugEntryRva +\r
- (UINTN)sizeof(EFI_TE_IMAGE_HEADER) -\r
- (UINTN) TeHdr->StrippedSize\r
- );\r
- }\r
-\r
- if (ImageContext->CodeView == NULL) {\r
- ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;\r
- return RETURN_LOAD_ERROR;\r
- }\r
-\r
- if (DebugEntry->RVA == 0) {\r
- Size = DebugEntry->SizeOfData;\r
- if (!(ImageContext->IsTeImage)) {\r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- DebugEntry->FileOffset,\r
- &Size,\r
- ImageContext->CodeView\r
- );\r
- } else {\r
- Status = ImageContext->ImageRead (\r
- ImageContext->Handle,\r
- DebugEntry->FileOffset + sizeof (EFI_TE_IMAGE_HEADER) - TeHdr->StrippedSize,\r
- &Size,\r
- ImageContext->CodeView\r
- );\r
- //\r
- // Should we apply fix up to this field according to the size difference between PE and TE?\r
- // Because now we maintain TE header fields unfixed, this field will also remain as they are\r
- // in original PE image.\r
- //\r
- }\r
-\r
- if (RETURN_ERROR (Status)) {\r
- ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;\r
- return RETURN_LOAD_ERROR;\r
- }\r
-\r
- DebugEntry->RVA = TempDebugEntryRva;\r
- }\r
-\r
- switch (*(UINT32 *) ImageContext->CodeView) {\r
- case CODEVIEW_SIGNATURE_NB10:\r
- ImageContext->PdbPointer = (CHAR8 *) ImageContext->CodeView + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY);\r
- break;\r
-\r
- case CODEVIEW_SIGNATURE_RSDS:\r
- ImageContext->PdbPointer = (CHAR8 *) ImageContext->CodeView + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY);\r
- break;\r
-\r
- default:\r
- break;\r
- }\r
- }\r
- }\r
- }\r
-\r
- return Status;\r
-}\r
projects / mirror_edk2.git / blobdiff