/** @file\r
Tiano PE/COFF loader.\r
\r
+ This PE/COFF loader supports loading any PE32 or PE32+ image type, but\r
+ only supports relocating IA32, X64, IPF, and EBC images.\r
+\r
Copyright (c) 2006, 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
\r
**/\r
\r
+\r
/**\r
- Performs an Itanium-based specific relocation fixup.\r
+ Performs an Itanium-based specific relocation fixup and is a no-op on other\r
+ instruction sets.\r
\r
@param Reloc Pointer to the relocation record.\r
@param Fixup Pointer to the address to fix up.\r
);\r
\r
\r
+/**\r
+ Performs an Itanium-based specific re-relocation fixup and is a no-op on other\r
+ instruction sets. This is used to re-relocated the image into the EFI virtual\r
+ space for runtime calls.\r
+\r
+ @param Reloc Pointer to the relocation record.\r
+ @param Fixup Pointer to the address to fix up.\r
+ @param FixupData Pointer to a buffer to log the fixups.\r
+ @param Adjust The offset to adjust the fixup.\r
+\r
+ @return Status code.\r
+\r
+**/\r
+RETURN_STATUS\r
+PeHotRelocateImageEx (\r
+ IN UINT16 *Reloc,\r
+ IN OUT CHAR8 *Fixup,\r
+ IN OUT CHAR8 **FixupData,\r
+ IN UINT64 Adjust\r
+ );\r
+\r
+\r
+/**\r
+ Returns TRUE if the machine type of PE/COFF image is supported. Supported\r
+ does not mean the image can be executed it means the PE/COFF loader supports\r
+ loading and relocating of the image type. It's up to the caller to support\r
+ the entry point.\r
+\r
+ @param Machine Machine type from the PE Header.\r
+\r
+ @return TRUE if this PE/COFF loader can load the image\r
+\r
+**/\r
+BOOLEAN\r
+PeCoffLoaderImageFormatSupported (\r
+ IN UINT16 Machine\r
+ );\r
+\r
+\r
+/**\r
+ Retrieves the magic value from the PE/COFF header.\r
+\r
+ @param Hdr The buffer in which to return the PE32, PE32+, or TE header.\r
+\r
+ @return EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC - Image is PE32\r
+ @return EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC - Image is PE32+\r
+\r
+**/\r
+UINT16\r
+PeCoffLoaderGetPeHeaderMagicValue (\r
+ IN EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr\r
+ )\r
+{\r
+ //\r
+ // NOTE: Some versions of Linux ELILO for Itanium have an incorrect magic value \r
+ // in the PE/COFF Header. If the MachineType is Itanium(IA64) and the \r
+ // Magic value in the OptionalHeader is EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC\r
+ // then override the returned value to EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC\r
+ //\r
+ if (Hdr.Pe32->FileHeader.Machine == EFI_IMAGE_MACHINE_IA64 && Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {\r
+ return EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;\r
+ }\r
+ //\r
+ // Return the magic value from the PC/COFF Optional Header\r
+ //\r
+ return Hdr.Pe32->OptionalHeader.Magic;\r
+}\r
+\r
\r
/**\r
Retrieves the PE or TE Header from a PE/COFF or TE image.\r
\r
@param ImageContext The context of the image being loaded.\r
- @param PeHdr The buffer in which to return the PE header.\r
- @param TeHdr The buffer in which to return the TE header.\r
+ @param Hdr The buffer in which to return the PE32, PE32+, or TE header.\r
\r
@retval RETURN_SUCCESS The PE or TE Header is read.\r
@retval Other The error status from reading the PE/COFF or TE image using the ImageRead function.\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
+ IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,\r
+ OUT EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr\r
)\r
{\r
RETURN_STATUS Status;\r
EFI_IMAGE_DOS_HEADER DosHdr;\r
UINTN Size;\r
+ UINT16 Magic;\r
\r
- ImageContext->IsTeImage = FALSE;\r
//\r
- // Read the DOS image headers\r
+ // Read the DOS image header to check for it's existance\r
//\r
Size = sizeof (EFI_IMAGE_DOS_HEADER);\r
Status = ImageContext->ImageRead (\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
+ // DOS image header is present, so read the PE header after the DOS image\r
+ // header\r
//\r
ImageContext->PeCoffHeaderOffset = DosHdr.e_lfanew;\r
}\r
+\r
//\r
- // Read the PE/COFF Header\r
+ // Read the PE/COFF Header. For PE32 (32-bit) this will read in too much\r
+ // data, but that should not hurt anythine. Hdr.Pe32->OptionalHeader.Magic\r
+ // determins if this is a PE32 or PE32+ image. The magic is in the same\r
+ // location in both images.\r
//\r
- Size = sizeof (EFI_IMAGE_NT_HEADERS);\r
+ Size = sizeof (EFI_IMAGE_OPTIONAL_HEADER_UNION);\r
Status = ImageContext->ImageRead (\r
ImageContext->Handle,\r
ImageContext->PeCoffHeaderOffset,\r
&Size,\r
- PeHdr\r
+ Hdr.Pe32\r
);\r
if (RETURN_ERROR (Status)) {\r
ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;\r
return Status;\r
}\r
+\r
//\r
- // Check the PE/COFF Header Signature. If not, then try to read a TE header\r
+ // Use Signature to figure out if we understand the image format\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
+ if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {\r
+ ImageContext->IsTeImage = TRUE;\r
+ ImageContext->Machine = Hdr.Te->Machine;\r
+ ImageContext->ImageType = (UINT16)(Hdr.Te->Subsystem);\r
+ ImageContext->ImageSize = 0;\r
+ ImageContext->SectionAlignment = 4096;\r
+ ImageContext->SizeOfHeaders = sizeof (EFI_TE_IMAGE_HEADER) + (UINTN)Hdr.Te->BaseOfCode - (UINTN)Hdr.Te->StrippedSize;\r
\r
-/**\r
- Checks the PE or TE header of a PE/COFF or TE image to determine if it supported.\r
+ } else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {\r
+ ImageContext->IsTeImage = FALSE;\r
+ ImageContext->Machine = Hdr.Pe32->FileHeader.Machine;\r
\r
- @param ImageContext The context of the image being loaded.\r
- @param PeHdr The buffer in which to return the PE header.\r
- @param TeHdr The buffer in which to return the TE header.\r
+ Magic = PeCoffLoaderGetPeHeaderMagicValue (Hdr);\r
\r
- @retval RETURN_SUCCESS The PE/COFF or TE image is supported.\r
- @retval RETURN_UNSUPPORTED The PE/COFF or TE image is not supported.\r
+ if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {\r
+ //\r
+ // Use PE32 offset\r
+ //\r
+ ImageContext->ImageType = Hdr.Pe32->OptionalHeader.Subsystem;\r
+ ImageContext->ImageSize = (UINT64)Hdr.Pe32->OptionalHeader.SizeOfImage;\r
+ ImageContext->SectionAlignment = Hdr.Pe32->OptionalHeader.SectionAlignment;\r
+ ImageContext->SizeOfHeaders = Hdr.Pe32->OptionalHeader.SizeOfHeaders;\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
- // 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 if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC) {\r
+ //\r
+ // Use PE32+ offset\r
+ //\r
+ ImageContext->ImageType = Hdr.Pe32Plus->OptionalHeader.Subsystem;\r
+ ImageContext->ImageSize = (UINT64) Hdr.Pe32Plus->OptionalHeader.SizeOfImage;\r
+ ImageContext->SectionAlignment = Hdr.Pe32Plus->OptionalHeader.SectionAlignment;\r
+ ImageContext->SizeOfHeaders = Hdr.Pe32Plus->OptionalHeader.SizeOfHeaders;\r
+ } else {\r
+ ImageContext->ImageError = IMAGE_ERROR_INVALID_MACHINE_TYPE;\r
+ return RETURN_UNSUPPORTED;\r
+ }\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
+ if (!PeCoffLoaderImageFormatSupported (ImageContext->Machine)) {\r
+ //\r
+ // If the PE/COFF loader does not support the image type return\r
+ // unsupported. This library can suport lots of types of images\r
+ // this does not mean the user of this library can call the entry\r
+ // point of the image.\r
+ //\r
+ return RETURN_UNSUPPORTED;\r
}\r
\r
-\r
return RETURN_SUCCESS;\r
}\r
\r
+\r
/**\r
Retrieves information about a PE/COFF image.\r
\r
If the PE/COFF image accessed through the ImageRead service in the ImageContext structure is not\r
a supported PE/COFF image type, then return RETURN_UNSUPPORTED. If any errors occur while\r
computing the fields of ImageContext, then the error status is returned in the ImageError field of\r
- ImageContext. \r
+ ImageContext.\r
\r
@param ImageContext Pointer to the image context structure that describes the PE/COFF\r
image that needs to be examined by this function.\r
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\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
+ RETURN_STATUS Status;\r
+ EFI_IMAGE_OPTIONAL_HEADER_UNION HdrData;\r
+ EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\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
+ UINT32 NumberOfRvaAndSizes;\r
+ UINT16 Magic;\r
\r
if (NULL == ImageContext) {\r
return RETURN_INVALID_PARAMETER;\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
+ Hdr.Union = &HdrData;\r
+ Status = PeCoffLoaderGetPeHeader (ImageContext, Hdr);\r
if (RETURN_ERROR (Status)) {\r
return Status;\r
}\r
+\r
+ Magic = PeCoffLoaderGetPeHeaderMagicValue (Hdr);\r
+\r
//\r
// Retrieve the base address of the image\r
//\r
if (!(ImageContext->IsTeImage)) {\r
- ImageContext->ImageAddress = PeHdr.OptionalHeader.ImageBase;\r
+ if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {\r
+ //\r
+ // Use PE32 offset\r
+ //\r
+ ImageContext->ImageAddress = Hdr.Pe32->OptionalHeader.ImageBase;\r
+ } else {\r
+ //\r
+ // Use PE32+ offset\r
+ //\r
+ ImageContext->ImageAddress = Hdr.Pe32Plus->OptionalHeader.ImageBase;\r
+ }\r
} else {\r
- ImageContext->ImageAddress = (PHYSICAL_ADDRESS) (TeHdr.ImageBase);\r
+ ImageContext->ImageAddress = (PHYSICAL_ADDRESS)(Hdr.Te->ImageBase);\r
}\r
+\r
//\r
// Initialize the alternate destination address to 0 indicating that it\r
// should not be used.\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
+ if ((!(ImageContext->IsTeImage)) && ((Hdr.Pe32->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
+ if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {\r
+ //\r
+ // Use PE32 offset\r
+ //\r
+ NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;\r
+ DebugDirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);\r
+ } else {\r
+ //\r
+ // Use PE32+ offset\r
+ //\r
+ NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;\r
+ DebugDirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);\r
+ }\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
+ if (NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_DEBUG) {\r
\r
DebugDirectoryEntryRva = DebugDirectoryEntry->VirtualAddress;\r
\r
\r
SectionHeaderOffset = (UINTN)(\r
ImageContext->PeCoffHeaderOffset +\r
- sizeof (UINT32) + \r
- sizeof (EFI_IMAGE_FILE_HEADER) + \r
- PeHdr.FileHeader.SizeOfOptionalHeader\r
+ sizeof (UINT32) +\r
+ sizeof (EFI_IMAGE_FILE_HEADER) +\r
+ Hdr.Pe32->FileHeader.SizeOfOptionalHeader\r
);\r
\r
- for (Index = 0; Index < PeHdr.FileHeader.NumberOfSections; Index++) {\r
+ for (Index = 0; Index < Hdr.Pe32->FileHeader.NumberOfSections; Index++) {\r
//\r
// Read section header from file\r
//\r
\r
if (DebugDirectoryEntryRva >= SectionHeader.VirtualAddress &&\r
DebugDirectoryEntryRva < SectionHeader.VirtualAddress + SectionHeader.Misc.VirtualSize) {\r
- DebugDirectoryEntryFileOffset =\r
- DebugDirectoryEntryRva - SectionHeader.VirtualAddress + SectionHeader.PointerToRawData;\r
+\r
+ DebugDirectoryEntryFileOffset = DebugDirectoryEntryRva - SectionHeader.VirtualAddress + SectionHeader.PointerToRawData;\r
break;\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
+ DebugDirectoryEntry = &Hdr.Te->DataDirectory[1];\r
DebugDirectoryEntryRva = DebugDirectoryEntry->VirtualAddress;\r
- SectionHeaderOffset = (UINTN) (sizeof (EFI_TE_IMAGE_HEADER));\r
+ SectionHeaderOffset = (UINTN)(sizeof (EFI_TE_IMAGE_HEADER));\r
\r
DebugDirectoryEntryFileOffset = 0;\r
\r
- for (Index = 0; Index < TeHdr.NumberOfSections;) {\r
+ for (Index = 0; Index < Hdr.Te->NumberOfSections;) {\r
//\r
// Read section header from file\r
//\r
SectionHeader.VirtualAddress +\r
SectionHeader.PointerToRawData +\r
sizeof (EFI_TE_IMAGE_HEADER) -\r
- TeHdr.StrippedSize;\r
+ Hdr.Te->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
+ if (Index < (UINTN) Hdr.Te->NumberOfSections - 1) {\r
+ SectionHeaderOffset += (Hdr.Te->NumberOfSections - 1 - Index) * sizeof (EFI_IMAGE_SECTION_HEADER);\r
+ Index = Hdr.Te->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
+ // 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
+ if ((++Index) == (UINTN)Hdr.Te->NumberOfSections) {\r
ImageContext->ImageSize = (SectionHeader.VirtualAddress + SectionHeader.Misc.VirtualSize +\r
ImageContext->SectionAlignment - 1) & ~(ImageContext->SectionAlignment - 1);\r
}\r
return RETURN_SUCCESS;\r
}\r
\r
+\r
/**\r
Converts an image address to the loaded address.\r
\r
@return The converted address or NULL if the address can not be converted.\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
+ // @bug Check to make sure ImageSize is correct for the relocated image.\r
+ // it may only work for the file we start with and not the relocated image\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
+ return (CHAR8 *)((UINTN) ImageContext->ImageAddress + Address);\r
}\r
\r
/**\r
If the DestinationAddress field of ImageContext is 0, then use the ImageAddress field of\r
ImageContext as the relocation base address. Otherwise, use the DestinationAddress field\r
of ImageContext as the relocation base address. The caller must allocate the relocation\r
- fixup log buffer and fill in the FixupData field of ImageContext prior to calling this function. \r
+ fixup log buffer and fill in the FixupData field of ImageContext prior to calling this function.\r
If ImageContext is NULL, then ASSERT().\r
\r
@param ImageContext Pointer to the image context structure that describes the PE/COFF\r
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\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
+ RETURN_STATUS Status;\r
+ EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\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
+ UINT64 *F64;\r
+ CHAR8 *FixupData;\r
+ PHYSICAL_ADDRESS BaseAddress;\r
+ UINT32 NumberOfRvaAndSizes;\r
+ UINT16 Magic;\r
\r
ASSERT (ImageContext != NULL);\r
\r
- PeHdr = NULL;\r
- TeHdr = NULL;\r
//\r
// Assume success\r
//\r
}\r
\r
if (!(ImageContext->IsTeImage)) {\r
- PeHdr = (EFI_IMAGE_NT_HEADERS *)((UINTN)ImageContext->ImageAddress + \r
- ImageContext->PeCoffHeaderOffset);\r
- \r
- Adjust = (UINT64) BaseAddress - PeHdr->OptionalHeader.ImageBase;\r
- PeHdr->OptionalHeader.ImageBase = (UINTN)BaseAddress;\r
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)ImageContext->ImageAddress + ImageContext->PeCoffHeaderOffset);\r
+\r
+ Magic = PeCoffLoaderGetPeHeaderMagicValue (Hdr);\r
+\r
+ if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {\r
+ //\r
+ // Use PE32 offset\r
+ //\r
+ Adjust = (UINT64)BaseAddress - Hdr.Pe32->OptionalHeader.ImageBase;\r
+ Hdr.Pe32->OptionalHeader.ImageBase = (UINT32)BaseAddress;\r
+\r
+ NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;\r
+ RelocDir = &Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];\r
+ } else {\r
+ //\r
+ // Use PE32+ offset\r
+ //\r
+ Adjust = (UINT64) BaseAddress - Hdr.Pe32Plus->OptionalHeader.ImageBase;\r
+ Hdr.Pe32Plus->OptionalHeader.ImageBase = (UINT64)BaseAddress;\r
+\r
+ NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;\r
+ RelocDir = &Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];\r
+ }\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
+\r
+ if (NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC) {\r
RelocBase = PeCoffLoaderImageAddress (ImageContext, RelocDir->VirtualAddress);\r
RelocBaseEnd = PeCoffLoaderImageAddress (\r
ImageContext,\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
+ Hdr.Te = (EFI_TE_IMAGE_HEADER *)(UINTN)(ImageContext->ImageAddress);\r
+ Adjust = (UINT64) (BaseAddress - Hdr.Te->ImageBase);\r
+ Hdr.Te->ImageBase = (UINT64) (BaseAddress);\r
\r
//\r
// Find the relocation block\r
//\r
- RelocDir = &TeHdr->DataDirectory[0];\r
+ RelocDir = &Hdr.Te->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
+ ImageContext->ImageAddress +\r
+ RelocDir->VirtualAddress +\r
+ sizeof(EFI_TE_IMAGE_HEADER) -\r
+ Hdr.Te->StrippedSize\r
+ );\r
RelocBaseEnd = (EFI_IMAGE_BASE_RELOCATION *) ((UINTN) RelocBase + (UINTN) RelocDir->Size - 1);\r
}\r
- \r
+\r
//\r
// Run the relocation information and apply the fixups\r
//\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
+ RelocBase->VirtualAddress +\r
+ sizeof(EFI_TE_IMAGE_HEADER) -\r
+ Hdr.Te->StrippedSize\r
+ );\r
}\r
\r
if ((CHAR8 *) RelocEnd < (CHAR8 *) ((UINTN) ImageContext->ImageAddress) ||\r
- (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
case EFI_IMAGE_REL_BASED_HIGH:\r
F16 = (UINT16 *) Fixup;\r
- *F16 = (UINT16) ((*F16 << 16) + (UINT16) Adjust);\r
+ *F16 = (UINT16) (*F16 + ((UINT16) ((UINT32) Adjust >> 16)));\r
if (FixupData != NULL) {\r
*(UINT16 *) FixupData = *F16;\r
FixupData = FixupData + sizeof (UINT16);\r
*F32 = *F32 + (UINT32) Adjust;\r
if (FixupData != NULL) {\r
FixupData = ALIGN_POINTER (FixupData, sizeof (UINT32));\r
- *(UINT32 *) FixupData = *F32;\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
+ case EFI_IMAGE_REL_BASED_DIR64:\r
+ F64 = (UINT64 *) Fixup;\r
+ *F64 = *F64 + (UINT64) Adjust;\r
+ if (FixupData != NULL) {\r
+ FixupData = ALIGN_POINTER (FixupData, sizeof(UINT64));\r
+ *(UINT64 *)(FixupData) = *F64;\r
+ FixupData = FixupData + sizeof(UINT64);\r
+ }\r
+ break;\r
\r
default:\r
+ //\r
+ // The common code does not handle some of the stranger IPF relocations\r
+ // PeCoffLoaderRelocateImageEx () addes support for these complex fixups\r
+ // on IPF and is a No-Op on other archtiectures.\r
+ //\r
Status = PeCoffLoaderRelocateImageEx (Reloc, Fixup, &FixupData, Adjust);\r
if (RETURN_ERROR (Status)) {\r
ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;\r
)\r
{\r
RETURN_STATUS Status;\r
- EFI_IMAGE_NT_HEADERS *PeHdr;\r
- EFI_TE_IMAGE_HEADER *TeHdr;\r
+ EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\r
PE_COFF_LOADER_IMAGE_CONTEXT CheckContext;\r
EFI_IMAGE_SECTION_HEADER *FirstSection;\r
EFI_IMAGE_SECTION_HEADER *Section;\r
EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *DebugEntry;\r
UINTN Size;\r
UINT32 TempDebugEntryRva;\r
+ UINT32 NumberOfRvaAndSizes;\r
+ UINT16 Magic;\r
\r
ASSERT (ImageContext != NULL);\r
\r
- PeHdr = NULL;\r
- TeHdr = NULL;\r
-\r
//\r
// Assume success\r
//\r
(VOID *) (UINTN) ImageContext->ImageAddress\r
);\r
\r
- PeHdr = (EFI_IMAGE_NT_HEADERS *)\r
- ((UINTN)ImageContext->ImageAddress + ImageContext->PeCoffHeaderOffset);\r
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((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
+ sizeof(UINT32) +\r
+ sizeof(EFI_IMAGE_FILE_HEADER) +\r
+ Hdr.Pe32->FileHeader.SizeOfOptionalHeader\r
);\r
- NumberOfSections = (UINTN) (PeHdr->FileHeader.NumberOfSections);\r
+ NumberOfSections = (UINTN) (Hdr.Pe32->FileHeader.NumberOfSections);\r
} else {\r
Status = ImageContext->ImageRead (\r
ImageContext->Handle,\r
0,\r
&ImageContext->SizeOfHeaders,\r
- (void *) (UINTN) ImageContext->ImageAddress\r
+ (void *)(UINTN)ImageContext->ImageAddress\r
);\r
\r
- TeHdr = (EFI_TE_IMAGE_HEADER *) (UINTN) (ImageContext->ImageAddress);\r
+ Hdr.Te = (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
+ (UINTN)ImageContext->ImageAddress +\r
+ sizeof(EFI_TE_IMAGE_HEADER)\r
+ );\r
+ NumberOfSections = (UINTN) (Hdr.Te->NumberOfSections);\r
\r
}\r
\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
+ Base = (CHAR8 *)((UINTN) Base + sizeof (EFI_TE_IMAGE_HEADER) - (UINTN)Hdr.Te->StrippedSize);\r
+ End = (CHAR8 *)((UINTN) End + sizeof (EFI_TE_IMAGE_HEADER) - (UINTN)Hdr.Te->StrippedSize);\r
}\r
\r
if (End > MaxEnd) {\r
} else {\r
Status = ImageContext->ImageRead (\r
ImageContext->Handle,\r
- Section->PointerToRawData + sizeof (EFI_TE_IMAGE_HEADER) - (UINTN) TeHdr->StrippedSize,\r
+ Section->PointerToRawData + sizeof (EFI_TE_IMAGE_HEADER) - (UINTN)Hdr.Te->StrippedSize,\r
&Size,\r
Base\r
);\r
//\r
// Get image's entry point\r
//\r
+ Magic = PeCoffLoaderGetPeHeaderMagicValue (Hdr);\r
if (!(ImageContext->IsTeImage)) {\r
- ImageContext->EntryPoint = (PHYSICAL_ADDRESS) (UINTN) PeCoffLoaderImageAddress (\r
- ImageContext,\r
- PeHdr->OptionalHeader.AddressOfEntryPoint\r
- );\r
+ //\r
+ // Sizes of AddressOfEntryPoint are different so we need to do this safely\r
+ //\r
+ if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {\r
+ //\r
+ // Use PE32 offset\r
+ //\r
+ ImageContext->EntryPoint = (PHYSICAL_ADDRESS)(UINTN)PeCoffLoaderImageAddress (\r
+ ImageContext,\r
+ (UINTN)Hdr.Pe32->OptionalHeader.AddressOfEntryPoint\r
+ );\r
+ } else {\r
+ //\r
+ // Use PE32+ offset\r
+ //\r
+ ImageContext->EntryPoint = (PHYSICAL_ADDRESS)(UINTN)PeCoffLoaderImageAddress (\r
+ ImageContext,\r
+ (UINTN)Hdr.Pe32Plus->OptionalHeader.AddressOfEntryPoint\r
+ );\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
+ (UINTN)ImageContext->ImageAddress +\r
+ (UINTN)Hdr.Te->AddressOfEntryPoint +\r
+ (UINTN)sizeof(EFI_TE_IMAGE_HEADER) -\r
+ (UINTN)Hdr.Te->StrippedSize\r
+ );\r
}\r
\r
//\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
+ if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {\r
+ //\r
+ // Use PE32 offset\r
+ //\r
+ NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;\r
+ DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];\r
+ } else {\r
+ //\r
+ // Use PE32+ offset\r
+ //\r
+ NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;\r
+ DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];\r
+ }\r
+\r
+ if (NumberOfRvaAndSizes > 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
+ DirectoryEntry = &Hdr.Te->DataDirectory[0];\r
ImageContext->FixupDataSize = DirectoryEntry->Size / sizeof (UINT16) * sizeof (UINTN);\r
}\r
//\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
+ ImageContext->ImageAddress +\r
+ ImageContext->DebugDirectoryEntryRva +\r
+ sizeof(EFI_TE_IMAGE_HEADER) -\r
+ Hdr.Te->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
+ if ((UINTN)Section->SizeOfRawData < Section->Misc.VirtualSize) {\r
TempDebugEntryRva = Section->VirtualAddress + Section->Misc.VirtualSize;\r
} else {\r
TempDebugEntryRva = Section->VirtualAddress + Section->SizeOfRawData;\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
+ (UINTN)ImageContext->ImageAddress +\r
+ (UINTN)TempDebugEntryRva +\r
+ (UINTN)sizeof (EFI_TE_IMAGE_HEADER) -\r
+ (UINTN) Hdr.Te->StrippedSize\r
+ );\r
}\r
\r
if (ImageContext->CodeView == NULL) {\r
} else {\r
Status = ImageContext->ImageRead (\r
ImageContext->Handle,\r
- DebugEntry->FileOffset + sizeof (EFI_TE_IMAGE_HEADER) - TeHdr->StrippedSize,\r
+ DebugEntry->FileOffset + sizeof (EFI_TE_IMAGE_HEADER) - Hdr.Te->StrippedSize,\r
&Size,\r
ImageContext->CodeView\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
+ 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
+ ImageContext->PdbPointer = (CHAR8 *)ImageContext->CodeView + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY);\r
break;\r
\r
default:\r
\r
return Status;\r
}\r
+\r
+\r
+/**\r
+ Reapply fixups on a fixed up PE32/PE32+ image to allow virutal calling at EFI\r
+ runtime.\r
+\r
+ PE_COFF_LOADER_IMAGE_CONTEXT.FixupData stores information needed to reapply\r
+ the fixups with a virtual mapping.\r
+\r
+\r
+ @param ImageBase Base address of relocated image\r
+ @param VirtImageBase Virtual mapping for ImageBase\r
+ @param ImageSize Size of the image to relocate\r
+ @param RelocationData Location to place results of read\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+PeCoffLoaderRelocateImageForRuntime (\r
+ IN PHYSICAL_ADDRESS ImageBase,\r
+ IN PHYSICAL_ADDRESS VirtImageBase,\r
+ IN UINTN ImageSize,\r
+ IN VOID *RelocationData\r
+ )\r
+{\r
+ CHAR8 *OldBase;\r
+ CHAR8 *NewBase;\r
+ EFI_IMAGE_DOS_HEADER *DosHdr;\r
+ EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\r
+ UINT32 NumberOfRvaAndSizes;\r
+ EFI_IMAGE_DATA_DIRECTORY *DataDirectory;\r
+ EFI_IMAGE_DATA_DIRECTORY *RelocDir;\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
+ UINT64 *F64;\r
+ CHAR8 *FixupData;\r
+ UINTN Adjust;\r
+ RETURN_STATUS Status;\r
+ UINT16 Magic;\r
+\r
+ OldBase = (CHAR8 *)((UINTN)ImageBase);\r
+ NewBase = (CHAR8 *)((UINTN)VirtImageBase);\r
+ Adjust = (UINTN) NewBase - (UINTN) OldBase;\r
+\r
+ //\r
+ // Find the image's relocate dir info\r
+ //\r
+ DosHdr = (EFI_IMAGE_DOS_HEADER *)OldBase;\r
+ if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r
+ //\r
+ // Valid DOS header so get address of PE header\r
+ //\r
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)(((CHAR8 *)DosHdr) + DosHdr->e_lfanew);\r
+ } else {\r
+ //\r
+ // No Dos header so assume image starts with PE header.\r
+ //\r
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)OldBase;\r
+ }\r
+\r
+ if (Hdr.Pe32->Signature != EFI_IMAGE_NT_SIGNATURE) {\r
+ //\r
+ // Not a valid PE image so Exit\r
+ //\r
+ return ;\r
+ }\r
+\r
+ Magic = PeCoffLoaderGetPeHeaderMagicValue (Hdr);\r
+\r
+ if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {\r
+ //\r
+ // Use PE32 offset\r
+ //\r
+ NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;\r
+ DataDirectory = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32->OptionalHeader.DataDirectory[0]);\r
+ } else {\r
+ //\r
+ // Use PE32+ offset\r
+ //\r
+ NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;\r
+ DataDirectory = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32Plus->OptionalHeader.DataDirectory[0]);\r
+ }\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 (NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC) {\r
+ RelocDir = DataDirectory + EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC;\r
+ RelocBase = (EFI_IMAGE_BASE_RELOCATION *)(UINTN)(ImageBase + RelocDir->VirtualAddress);\r
+ RelocBaseEnd = (EFI_IMAGE_BASE_RELOCATION *)(UINTN)(ImageBase + RelocDir->VirtualAddress + RelocDir->Size);\r
+ } else {\r
+ //\r
+ // Cannot find relocations, cannot continue\r
+ //\r
+ ASSERT (FALSE);\r
+ return ;\r
+ }\r
+\r
+ ASSERT (RelocBase != NULL && RelocBaseEnd != NULL);\r
+\r
+ //\r
+ // Run the whole relocation block. And re-fixup data that has not been\r
+ // modified. The FixupData is used to see if the image has been modified\r
+ // since it was relocated. This is so data sections that have been updated\r
+ // by code will not be fixed up, since that would set them back to\r
+ // defaults.\r
+ //\r
+ FixupData = RelocationData;\r
+ while (RelocBase < RelocBaseEnd) {\r
+\r
+ Reloc = (UINT16 *) ((UINT8 *) RelocBase + sizeof (EFI_IMAGE_BASE_RELOCATION));\r
+ RelocEnd = (UINT16 *) ((UINT8 *) RelocBase + RelocBase->SizeOfBlock);\r
+ FixupBase = (CHAR8 *) ((UINTN)ImageBase) + RelocBase->VirtualAddress;\r
+\r
+ //\r
+ // Run this relocation record\r
+ //\r
+ while (Reloc < RelocEnd) {\r
+\r
+ Fixup = FixupBase + (*Reloc & 0xFFF);\r
+ switch ((*Reloc) >> 12) {\r
+\r
+ case EFI_IMAGE_REL_BASED_ABSOLUTE:\r
+ break;\r
+\r
+ case EFI_IMAGE_REL_BASED_HIGH:\r
+ F16 = (UINT16 *) Fixup;\r
+ if (*(UINT16 *) FixupData == *F16) {\r
+ *F16 = (UINT16) (*F16 + ((UINT16) ((UINT32) Adjust >> 16)));\r
+ }\r
+\r
+ FixupData = FixupData + sizeof (UINT16);\r
+ break;\r
+\r
+ case EFI_IMAGE_REL_BASED_LOW:\r
+ F16 = (UINT16 *) Fixup;\r
+ if (*(UINT16 *) FixupData == *F16) {\r
+ *F16 = (UINT16) (*F16 + ((UINT16) Adjust & 0xffff));\r
+ }\r
+\r
+ FixupData = FixupData + sizeof (UINT16);\r
+ break;\r
+\r
+ case EFI_IMAGE_REL_BASED_HIGHLOW:\r
+ F32 = (UINT32 *) Fixup;\r
+ FixupData = ALIGN_POINTER (FixupData, sizeof (UINT32));\r
+ if (*(UINT32 *) FixupData == *F32) {\r
+ *F32 = *F32 + (UINT32) Adjust;\r
+ }\r
+\r
+ FixupData = FixupData + sizeof (UINT32);\r
+ break;\r
+\r
+ case EFI_IMAGE_REL_BASED_DIR64:\r
+ F64 = (UINT64 *)Fixup;\r
+ FixupData = ALIGN_POINTER (FixupData, sizeof (UINT64));\r
+ if (*(UINT64 *) FixupData == *F64) {\r
+ *F64 = *F64 + (UINT64)Adjust;\r
+ }\r
+\r
+ FixupData = FixupData + sizeof (UINT64);\r
+ break;\r
+\r
+ case EFI_IMAGE_REL_BASED_HIGHADJ:\r
+ //\r
+ // Not implemented, but not used in EFI 1.0\r
+ //\r
+ ASSERT (FALSE);\r
+ break;\r
+\r
+ default:\r
+ //\r
+ // Only Itanium requires ConvertPeImage_Ex\r
+ //\r
+ Status = PeHotRelocateImageEx (Reloc, Fixup, &FixupData, Adjust);\r
+ if (RETURN_ERROR (Status)) {\r
+ return ;\r
+ }\r
+ }\r
+ //\r
+ // Next relocation record\r
+ //\r
+ Reloc += 1;\r
+ }\r
+ //\r
+ // next reloc block\r
+ //\r
+ RelocBase = (EFI_IMAGE_BASE_RELOCATION *) RelocEnd;\r
+ }\r
+}\r
+\r
+\r
+/**\r
+ ImageRead function that operates on a memory buffer whos base is passed into\r
+ FileHandle.\r
+\r
+ @param FileHandle Ponter to baes of the input stream\r
+ @param FileOffset Offset to the start of the buffer\r
+ @param ReadSize Number of bytes to copy into the buffer\r
+ @param Buffer Location to place results of read\r
+\r
+ @retval RETURN_SUCCESS Data is read from FileOffset from the Handle into\r
+ the buffer.\r
+**/\r
+RETURN_STATUS\r
+EFIAPI\r
+PeCoffLoaderImageReadFromMemory (\r
+ IN VOID *FileHandle,\r
+ IN UINTN FileOffset,\r
+ IN OUT UINTN *ReadSize,\r
+ OUT VOID *Buffer\r
+ )\r
+{\r
+ CopyMem (Buffer, ((UINT8 *)FileHandle) + FileOffset, *ReadSize);\r
+ return RETURN_SUCCESS;\r
+}\r
+\r
projects / mirror_edk2.git / blobdiff