mirror of https://github.com/acidanthera/audk.git
1960 lines
76 KiB
C
1960 lines
76 KiB
C
/** @file
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Base PE/COFF loader supports loading any PE32/PE32+ or TE image, but
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only supports relocating IA32, x64, IPF, and EBC images.
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Caution: This file requires additional review when modified.
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This library will have external input - PE/COFF image.
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This external input must be validated carefully to avoid security issue like
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buffer overflow, integer overflow.
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The basic guideline is that caller need provide ImageContext->ImageRead () with the
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necessary data range check, to make sure when this library reads PE/COFF image, the
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PE image buffer is always in valid range.
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This library will also do some additional check for PE header fields.
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PeCoffLoaderGetPeHeader() routine will do basic check for PE/COFF header.
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PeCoffLoaderGetImageInfo() routine will do basic check for whole PE/COFF image.
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Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
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Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "BasePeCoffLibInternals.h"
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/**
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Adjust some fields in section header for TE image.
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@param SectionHeader Pointer to the section header.
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@param TeStrippedOffset Size adjust for the TE image.
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**/
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VOID
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PeCoffLoaderAdjustOffsetForTeImage (
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EFI_IMAGE_SECTION_HEADER *SectionHeader,
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UINT32 TeStrippedOffset
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)
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{
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SectionHeader->VirtualAddress -= TeStrippedOffset;
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SectionHeader->PointerToRawData -= TeStrippedOffset;
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}
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/**
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Retrieves the magic value from the PE/COFF header.
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@param Hdr The buffer in which to return the PE32, PE32+, or TE header.
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@return EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC - Image is PE32
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@return EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC - Image is PE32+
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**/
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UINT16
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PeCoffLoaderGetPeHeaderMagicValue (
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IN EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
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)
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{
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//
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// NOTE: Some versions of Linux ELILO for Itanium have an incorrect magic value
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// in the PE/COFF Header. If the MachineType is Itanium(IA64) and the
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// Magic value in the OptionalHeader is EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
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// then override the returned value to EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC
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//
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if (Hdr.Pe32->FileHeader.Machine == IMAGE_FILE_MACHINE_IA64 && Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
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return EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
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}
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//
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// Return the magic value from the PC/COFF Optional Header
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//
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return Hdr.Pe32->OptionalHeader.Magic;
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}
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/**
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Retrieves the PE or TE Header from a PE/COFF or TE image.
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Caution: This function may receive untrusted input.
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PE/COFF image is external input, so this routine will
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also done many checks in PE image to make sure PE image DosHeader, PeOptionHeader,
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SizeOfHeader, Section Data Region and Security Data Region be in PE image range.
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@param ImageContext The context of the image being loaded.
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@param Hdr The buffer in which to return the PE32, PE32+, or TE header.
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@retval RETURN_SUCCESS The PE or TE Header is read.
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@retval Other The error status from reading the PE/COFF or TE image using the ImageRead function.
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**/
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RETURN_STATUS
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PeCoffLoaderGetPeHeader (
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IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,
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OUT EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
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)
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{
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RETURN_STATUS Status;
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EFI_IMAGE_DOS_HEADER DosHdr;
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UINTN Size;
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UINTN ReadSize;
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UINT16 Magic;
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UINT32 SectionHeaderOffset;
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UINT32 Index;
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UINT32 HeaderWithoutDataDir;
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CHAR8 BufferData;
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UINTN NumberOfSections;
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EFI_IMAGE_SECTION_HEADER SectionHeader;
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//
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// Read the DOS image header to check for its existence
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//
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Size = sizeof (EFI_IMAGE_DOS_HEADER);
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ReadSize = Size;
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Status = ImageContext->ImageRead (
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ImageContext->Handle,
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0,
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&Size,
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&DosHdr
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);
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if (RETURN_ERROR (Status) || (Size != ReadSize)) {
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ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
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if (Size != ReadSize) {
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Status = RETURN_UNSUPPORTED;
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}
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return Status;
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}
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ImageContext->PeCoffHeaderOffset = 0;
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if (DosHdr.e_magic == EFI_IMAGE_DOS_SIGNATURE) {
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//
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// DOS image header is present, so read the PE header after the DOS image
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// header
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//
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ImageContext->PeCoffHeaderOffset = DosHdr.e_lfanew;
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}
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//
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// Read the PE/COFF Header. For PE32 (32-bit) this will read in too much
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// data, but that should not hurt anything. Hdr.Pe32->OptionalHeader.Magic
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// determines if this is a PE32 or PE32+ image. The magic is in the same
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// location in both images.
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//
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Size = sizeof (EFI_IMAGE_OPTIONAL_HEADER_UNION);
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ReadSize = Size;
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Status = ImageContext->ImageRead (
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ImageContext->Handle,
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ImageContext->PeCoffHeaderOffset,
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&Size,
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Hdr.Pe32
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);
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if (RETURN_ERROR (Status) || (Size != ReadSize)) {
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ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
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if (Size != ReadSize) {
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Status = RETURN_UNSUPPORTED;
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}
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return Status;
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}
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//
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// Use Signature to figure out if we understand the image format
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//
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if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {
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ImageContext->IsTeImage = TRUE;
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ImageContext->Machine = Hdr.Te->Machine;
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ImageContext->ImageType = (UINT16)(Hdr.Te->Subsystem);
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//
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// For TeImage, SectionAlignment is undefined to be set to Zero
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// ImageSize can be calculated.
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//
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ImageContext->ImageSize = 0;
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ImageContext->SectionAlignment = 0;
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ImageContext->SizeOfHeaders = sizeof (EFI_TE_IMAGE_HEADER) + (UINTN)Hdr.Te->BaseOfCode - (UINTN)Hdr.Te->StrippedSize;
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//
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// Check the StrippedSize.
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//
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if (sizeof (EFI_TE_IMAGE_HEADER) >= (UINT32)Hdr.Te->StrippedSize) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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//
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// Check the SizeOfHeaders field.
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//
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if (Hdr.Te->BaseOfCode <= Hdr.Te->StrippedSize) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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//
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// Read last byte of Hdr.Te->SizeOfHeaders from the file.
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//
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Size = 1;
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ReadSize = Size;
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Status = ImageContext->ImageRead (
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ImageContext->Handle,
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ImageContext->SizeOfHeaders - 1,
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&Size,
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&BufferData
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);
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if (RETURN_ERROR (Status) || (Size != ReadSize)) {
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ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
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if (Size != ReadSize) {
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Status = RETURN_UNSUPPORTED;
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}
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return Status;
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}
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//
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// TE Image Data Directory Entry size is non-zero, but the Data Directory Virtual Address is zero.
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// This case is not a valid TE image.
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//
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if ((Hdr.Te->DataDirectory[0].Size != 0 && Hdr.Te->DataDirectory[0].VirtualAddress == 0) ||
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(Hdr.Te->DataDirectory[1].Size != 0 && Hdr.Te->DataDirectory[1].VirtualAddress == 0)) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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} else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {
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ImageContext->IsTeImage = FALSE;
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ImageContext->Machine = Hdr.Pe32->FileHeader.Machine;
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Magic = PeCoffLoaderGetPeHeaderMagicValue (Hdr);
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if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
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//
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// 1. Check OptionalHeader.NumberOfRvaAndSizes filed.
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//
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if (EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES < Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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//
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// 2. Check the FileHeader.SizeOfOptionalHeader field.
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// OptionalHeader.NumberOfRvaAndSizes is not bigger than 16, so
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// OptionalHeader.NumberOfRvaAndSizes * sizeof (EFI_IMAGE_DATA_DIRECTORY) will not overflow.
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//
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HeaderWithoutDataDir = sizeof (EFI_IMAGE_OPTIONAL_HEADER32) - sizeof (EFI_IMAGE_DATA_DIRECTORY) * EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;
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if (((UINT32)Hdr.Pe32->FileHeader.SizeOfOptionalHeader - HeaderWithoutDataDir) !=
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Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes * sizeof (EFI_IMAGE_DATA_DIRECTORY)) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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SectionHeaderOffset = ImageContext->PeCoffHeaderOffset + sizeof (UINT32) + sizeof (EFI_IMAGE_FILE_HEADER) + Hdr.Pe32->FileHeader.SizeOfOptionalHeader;
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//
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// 3. Check the FileHeader.NumberOfSections field.
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//
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if (Hdr.Pe32->OptionalHeader.SizeOfImage <= SectionHeaderOffset) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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if ((Hdr.Pe32->OptionalHeader.SizeOfImage - SectionHeaderOffset) / EFI_IMAGE_SIZEOF_SECTION_HEADER <= Hdr.Pe32->FileHeader.NumberOfSections) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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//
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// 4. Check the OptionalHeader.SizeOfHeaders field.
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//
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if (Hdr.Pe32->OptionalHeader.SizeOfHeaders <= SectionHeaderOffset) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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if (Hdr.Pe32->OptionalHeader.SizeOfHeaders >= Hdr.Pe32->OptionalHeader.SizeOfImage) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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if ((Hdr.Pe32->OptionalHeader.SizeOfHeaders - SectionHeaderOffset) / EFI_IMAGE_SIZEOF_SECTION_HEADER < (UINT32)Hdr.Pe32->FileHeader.NumberOfSections) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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//
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// 4.2 Read last byte of Hdr.Pe32.OptionalHeader.SizeOfHeaders from the file.
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//
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Size = 1;
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ReadSize = Size;
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Status = ImageContext->ImageRead (
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ImageContext->Handle,
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Hdr.Pe32->OptionalHeader.SizeOfHeaders - 1,
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&Size,
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&BufferData
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);
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if (RETURN_ERROR (Status) || (Size != ReadSize)) {
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ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
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if (Size != ReadSize) {
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Status = RETURN_UNSUPPORTED;
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}
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return Status;
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}
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//
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// Check the EFI_IMAGE_DIRECTORY_ENTRY_SECURITY data.
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// Read the last byte to make sure the data is in the image region.
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// The DataDirectory array begin with 1, not 0, so here use < to compare not <=.
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//
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if (EFI_IMAGE_DIRECTORY_ENTRY_SECURITY < Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes) {
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if (Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY].Size != 0) {
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//
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// Check the member data to avoid overflow.
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//
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if ((UINT32) (~0) - Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY].VirtualAddress <
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Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY].Size) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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//
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// Read last byte of section header from file
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//
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Size = 1;
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ReadSize = Size;
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Status = ImageContext->ImageRead (
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ImageContext->Handle,
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Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY].VirtualAddress +
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Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY].Size - 1,
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&Size,
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&BufferData
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);
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if (RETURN_ERROR (Status) || (Size != ReadSize)) {
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ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
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if (Size != ReadSize) {
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Status = RETURN_UNSUPPORTED;
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}
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return Status;
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}
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}
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}
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//
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// Use PE32 offset
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//
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ImageContext->ImageType = Hdr.Pe32->OptionalHeader.Subsystem;
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ImageContext->ImageSize = (UINT64)Hdr.Pe32->OptionalHeader.SizeOfImage;
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ImageContext->SectionAlignment = Hdr.Pe32->OptionalHeader.SectionAlignment;
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ImageContext->SizeOfHeaders = Hdr.Pe32->OptionalHeader.SizeOfHeaders;
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} else if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
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//
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// 1. Check FileHeader.NumberOfRvaAndSizes filed.
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//
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if (EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES < Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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//
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// 2. Check the FileHeader.SizeOfOptionalHeader field.
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// OptionalHeader.NumberOfRvaAndSizes is not bigger than 16, so
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// OptionalHeader.NumberOfRvaAndSizes * sizeof (EFI_IMAGE_DATA_DIRECTORY) will not overflow.
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//
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HeaderWithoutDataDir = sizeof (EFI_IMAGE_OPTIONAL_HEADER64) - sizeof (EFI_IMAGE_DATA_DIRECTORY) * EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;
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if (((UINT32)Hdr.Pe32Plus->FileHeader.SizeOfOptionalHeader - HeaderWithoutDataDir) !=
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Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes * sizeof (EFI_IMAGE_DATA_DIRECTORY)) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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SectionHeaderOffset = ImageContext->PeCoffHeaderOffset + sizeof (UINT32) + sizeof (EFI_IMAGE_FILE_HEADER) + Hdr.Pe32Plus->FileHeader.SizeOfOptionalHeader;
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//
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// 3. Check the FileHeader.NumberOfSections field.
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//
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if (Hdr.Pe32Plus->OptionalHeader.SizeOfImage <= SectionHeaderOffset) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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if ((Hdr.Pe32Plus->OptionalHeader.SizeOfImage - SectionHeaderOffset) / EFI_IMAGE_SIZEOF_SECTION_HEADER <= Hdr.Pe32Plus->FileHeader.NumberOfSections) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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//
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// 4. Check the OptionalHeader.SizeOfHeaders field.
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//
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if (Hdr.Pe32Plus->OptionalHeader.SizeOfHeaders <= SectionHeaderOffset) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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if (Hdr.Pe32Plus->OptionalHeader.SizeOfHeaders >= Hdr.Pe32Plus->OptionalHeader.SizeOfImage) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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if ((Hdr.Pe32Plus->OptionalHeader.SizeOfHeaders - SectionHeaderOffset) / EFI_IMAGE_SIZEOF_SECTION_HEADER < (UINT32)Hdr.Pe32Plus->FileHeader.NumberOfSections) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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//
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// 4.2 Read last byte of Hdr.Pe32Plus.OptionalHeader.SizeOfHeaders from the file.
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//
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Size = 1;
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ReadSize = Size;
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Status = ImageContext->ImageRead (
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ImageContext->Handle,
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Hdr.Pe32Plus->OptionalHeader.SizeOfHeaders - 1,
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&Size,
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&BufferData
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);
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if (RETURN_ERROR (Status) || (Size != ReadSize)) {
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ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
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if (Size != ReadSize) {
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Status = RETURN_UNSUPPORTED;
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}
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return Status;
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}
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//
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// Check the EFI_IMAGE_DIRECTORY_ENTRY_SECURITY data.
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// Read the last byte to make sure the data is in the image region.
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// The DataDirectory array begin with 1, not 0, so here use < to compare not <=.
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//
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if (EFI_IMAGE_DIRECTORY_ENTRY_SECURITY < Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes) {
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if (Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY].Size != 0) {
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//
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// Check the member data to avoid overflow.
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//
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if ((UINT32) (~0) - Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY].VirtualAddress <
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Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY].Size) {
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ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
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return RETURN_UNSUPPORTED;
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}
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//
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// Read last byte of section header from file
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//
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Size = 1;
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ReadSize = Size;
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Status = ImageContext->ImageRead (
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ImageContext->Handle,
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Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY].VirtualAddress +
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Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_SECURITY].Size - 1,
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&Size,
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&BufferData
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);
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if (RETURN_ERROR (Status) || (Size != ReadSize)) {
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ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
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if (Size != ReadSize) {
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Status = RETURN_UNSUPPORTED;
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}
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return Status;
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}
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}
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}
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//
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// Use PE32+ offset
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//
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ImageContext->ImageType = Hdr.Pe32Plus->OptionalHeader.Subsystem;
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ImageContext->ImageSize = (UINT64) Hdr.Pe32Plus->OptionalHeader.SizeOfImage;
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ImageContext->SectionAlignment = Hdr.Pe32Plus->OptionalHeader.SectionAlignment;
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ImageContext->SizeOfHeaders = Hdr.Pe32Plus->OptionalHeader.SizeOfHeaders;
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} else {
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ImageContext->ImageError = IMAGE_ERROR_INVALID_MACHINE_TYPE;
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return RETURN_UNSUPPORTED;
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}
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} else {
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ImageContext->ImageError = IMAGE_ERROR_INVALID_MACHINE_TYPE;
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return RETURN_UNSUPPORTED;
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}
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|
|
if (!PeCoffLoaderImageFormatSupported (ImageContext->Machine)) {
|
|
//
|
|
// If the PE/COFF loader does not support the image type return
|
|
// unsupported. This library can support lots of types of images
|
|
// this does not mean the user of this library can call the entry
|
|
// point of the image.
|
|
//
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
|
|
//
|
|
// Check each section field.
|
|
//
|
|
if (ImageContext->IsTeImage) {
|
|
SectionHeaderOffset = sizeof(EFI_TE_IMAGE_HEADER);
|
|
NumberOfSections = (UINTN) (Hdr.Te->NumberOfSections);
|
|
} else {
|
|
SectionHeaderOffset = ImageContext->PeCoffHeaderOffset + sizeof (UINT32) + sizeof (EFI_IMAGE_FILE_HEADER) + Hdr.Pe32->FileHeader.SizeOfOptionalHeader;
|
|
NumberOfSections = (UINTN) (Hdr.Pe32->FileHeader.NumberOfSections);
|
|
}
|
|
|
|
for (Index = 0; Index < NumberOfSections; Index++) {
|
|
//
|
|
// Read section header from file
|
|
//
|
|
Size = sizeof (EFI_IMAGE_SECTION_HEADER);
|
|
ReadSize = Size;
|
|
Status = ImageContext->ImageRead (
|
|
ImageContext->Handle,
|
|
SectionHeaderOffset,
|
|
&Size,
|
|
&SectionHeader
|
|
);
|
|
if (RETURN_ERROR (Status) || (Size != ReadSize)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
|
|
if (Size != ReadSize) {
|
|
Status = RETURN_UNSUPPORTED;
|
|
}
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// Adjust some field in Section Header for TE image.
|
|
//
|
|
if (ImageContext->IsTeImage) {
|
|
PeCoffLoaderAdjustOffsetForTeImage (&SectionHeader, (UINT32)Hdr.Te->StrippedSize - sizeof (EFI_TE_IMAGE_HEADER));
|
|
}
|
|
|
|
if (SectionHeader.SizeOfRawData > 0) {
|
|
//
|
|
// Section data should bigger than the Pe header.
|
|
//
|
|
if (SectionHeader.VirtualAddress < ImageContext->SizeOfHeaders ||
|
|
SectionHeader.PointerToRawData < ImageContext->SizeOfHeaders) {
|
|
ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
|
|
//
|
|
// Check the member data to avoid overflow.
|
|
//
|
|
if ((UINT32) (~0) - SectionHeader.PointerToRawData < SectionHeader.SizeOfRawData) {
|
|
ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
|
|
//
|
|
// Base on the ImageRead function to check the section data field.
|
|
// Read the last byte to make sure the data is in the image region.
|
|
//
|
|
Size = 1;
|
|
ReadSize = Size;
|
|
Status = ImageContext->ImageRead (
|
|
ImageContext->Handle,
|
|
SectionHeader.PointerToRawData + SectionHeader.SizeOfRawData - 1,
|
|
&Size,
|
|
&BufferData
|
|
);
|
|
if (RETURN_ERROR (Status) || (Size != ReadSize)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
|
|
if (Size != ReadSize) {
|
|
Status = RETURN_UNSUPPORTED;
|
|
}
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Check next section.
|
|
//
|
|
SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);
|
|
}
|
|
|
|
return RETURN_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
Retrieves information about a PE/COFF image.
|
|
|
|
Computes the PeCoffHeaderOffset, IsTeImage, ImageType, ImageAddress, ImageSize,
|
|
DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, and
|
|
DebugDirectoryEntryRva fields of the ImageContext structure.
|
|
If ImageContext is NULL, then return RETURN_INVALID_PARAMETER.
|
|
If the PE/COFF image accessed through the ImageRead service in the ImageContext
|
|
structure is not a supported PE/COFF image type, then return RETURN_UNSUPPORTED.
|
|
If any errors occur while computing the fields of ImageContext,
|
|
then the error status is returned in the ImageError field of ImageContext.
|
|
If the image is a TE image, then SectionAlignment is set to 0.
|
|
The ImageRead and Handle fields of ImageContext structure must be valid prior
|
|
to invoking this service.
|
|
|
|
Caution: This function may receive untrusted input.
|
|
PE/COFF image is external input, so this routine will
|
|
also done many checks in PE image to make sure PE image DosHeader, PeOptionHeader,
|
|
SizeOfHeader, Section Data Region and Security Data Region be in PE image range.
|
|
|
|
@param ImageContext The pointer to the image context structure that describes the PE/COFF
|
|
image that needs to be examined by this function.
|
|
|
|
@retval RETURN_SUCCESS The information on the PE/COFF image was collected.
|
|
@retval RETURN_INVALID_PARAMETER ImageContext is NULL.
|
|
@retval RETURN_UNSUPPORTED The PE/COFF image is not supported.
|
|
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
PeCoffLoaderGetImageInfo (
|
|
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
|
|
)
|
|
{
|
|
RETURN_STATUS Status;
|
|
EFI_IMAGE_OPTIONAL_HEADER_UNION HdrData;
|
|
EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;
|
|
EFI_IMAGE_DATA_DIRECTORY *DebugDirectoryEntry;
|
|
UINTN Size;
|
|
UINTN ReadSize;
|
|
UINTN Index;
|
|
UINTN DebugDirectoryEntryRva;
|
|
UINTN DebugDirectoryEntryFileOffset;
|
|
UINTN SectionHeaderOffset;
|
|
EFI_IMAGE_SECTION_HEADER SectionHeader;
|
|
EFI_IMAGE_DEBUG_DIRECTORY_ENTRY DebugEntry;
|
|
UINT32 NumberOfRvaAndSizes;
|
|
UINT16 Magic;
|
|
UINT32 TeStrippedOffset;
|
|
|
|
if (ImageContext == NULL) {
|
|
return RETURN_INVALID_PARAMETER;
|
|
}
|
|
//
|
|
// Assume success
|
|
//
|
|
ImageContext->ImageError = IMAGE_ERROR_SUCCESS;
|
|
|
|
Hdr.Union = &HdrData;
|
|
Status = PeCoffLoaderGetPeHeader (ImageContext, Hdr);
|
|
if (RETURN_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
Magic = PeCoffLoaderGetPeHeaderMagicValue (Hdr);
|
|
|
|
//
|
|
// Retrieve the base address of the image
|
|
//
|
|
if (!(ImageContext->IsTeImage)) {
|
|
TeStrippedOffset = 0;
|
|
if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
|
|
//
|
|
// Use PE32 offset
|
|
//
|
|
ImageContext->ImageAddress = Hdr.Pe32->OptionalHeader.ImageBase;
|
|
} else {
|
|
//
|
|
// Use PE32+ offset
|
|
//
|
|
ImageContext->ImageAddress = Hdr.Pe32Plus->OptionalHeader.ImageBase;
|
|
}
|
|
} else {
|
|
TeStrippedOffset = (UINT32)Hdr.Te->StrippedSize - sizeof (EFI_TE_IMAGE_HEADER);
|
|
ImageContext->ImageAddress = (PHYSICAL_ADDRESS)(Hdr.Te->ImageBase + TeStrippedOffset);
|
|
}
|
|
|
|
//
|
|
// Initialize the alternate destination address to 0 indicating that it
|
|
// should not be used.
|
|
//
|
|
ImageContext->DestinationAddress = 0;
|
|
|
|
//
|
|
// Initialize the debug codeview pointer.
|
|
//
|
|
ImageContext->DebugDirectoryEntryRva = 0;
|
|
ImageContext->CodeView = NULL;
|
|
ImageContext->PdbPointer = NULL;
|
|
|
|
//
|
|
// Three cases with regards to relocations:
|
|
// - Image has base relocs, RELOCS_STRIPPED==0 => image is relocatable
|
|
// - Image has no base relocs, RELOCS_STRIPPED==1 => Image is not relocatable
|
|
// - Image has no base relocs, RELOCS_STRIPPED==0 => Image is relocatable but
|
|
// has no base relocs to apply
|
|
// Obviously having base relocations with RELOCS_STRIPPED==1 is invalid.
|
|
//
|
|
// Look at the file header to determine if relocations have been stripped, and
|
|
// save this information in the image context for later use.
|
|
//
|
|
if ((!(ImageContext->IsTeImage)) && ((Hdr.Pe32->FileHeader.Characteristics & EFI_IMAGE_FILE_RELOCS_STRIPPED) != 0)) {
|
|
ImageContext->RelocationsStripped = TRUE;
|
|
} else if ((ImageContext->IsTeImage) && (Hdr.Te->DataDirectory[0].Size == 0) && (Hdr.Te->DataDirectory[0].VirtualAddress == 0)) {
|
|
ImageContext->RelocationsStripped = TRUE;
|
|
} else {
|
|
ImageContext->RelocationsStripped = FALSE;
|
|
}
|
|
|
|
if (!(ImageContext->IsTeImage)) {
|
|
if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
|
|
//
|
|
// Use PE32 offset
|
|
//
|
|
NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;
|
|
DebugDirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);
|
|
} else {
|
|
//
|
|
// Use PE32+ offset
|
|
//
|
|
NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;
|
|
DebugDirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);
|
|
}
|
|
|
|
if (NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_DEBUG) {
|
|
|
|
DebugDirectoryEntryRva = DebugDirectoryEntry->VirtualAddress;
|
|
|
|
//
|
|
// Determine the file offset of the debug directory... This means we walk
|
|
// the sections to find which section contains the RVA of the debug
|
|
// directory
|
|
//
|
|
DebugDirectoryEntryFileOffset = 0;
|
|
|
|
SectionHeaderOffset = (UINTN)(
|
|
ImageContext->PeCoffHeaderOffset +
|
|
sizeof (UINT32) +
|
|
sizeof (EFI_IMAGE_FILE_HEADER) +
|
|
Hdr.Pe32->FileHeader.SizeOfOptionalHeader
|
|
);
|
|
|
|
for (Index = 0; Index < Hdr.Pe32->FileHeader.NumberOfSections; Index++) {
|
|
//
|
|
// Read section header from file
|
|
//
|
|
Size = sizeof (EFI_IMAGE_SECTION_HEADER);
|
|
ReadSize = Size;
|
|
Status = ImageContext->ImageRead (
|
|
ImageContext->Handle,
|
|
SectionHeaderOffset,
|
|
&Size,
|
|
&SectionHeader
|
|
);
|
|
if (RETURN_ERROR (Status) || (Size != ReadSize)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
|
|
if (Size != ReadSize) {
|
|
Status = RETURN_UNSUPPORTED;
|
|
}
|
|
return Status;
|
|
}
|
|
|
|
if (DebugDirectoryEntryRva >= SectionHeader.VirtualAddress &&
|
|
DebugDirectoryEntryRva < SectionHeader.VirtualAddress + SectionHeader.Misc.VirtualSize) {
|
|
|
|
DebugDirectoryEntryFileOffset = DebugDirectoryEntryRva - SectionHeader.VirtualAddress + SectionHeader.PointerToRawData;
|
|
break;
|
|
}
|
|
|
|
SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);
|
|
}
|
|
|
|
if (DebugDirectoryEntryFileOffset != 0) {
|
|
for (Index = 0; Index < DebugDirectoryEntry->Size; Index += sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY)) {
|
|
//
|
|
// Read next debug directory entry
|
|
//
|
|
Size = sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
|
|
ReadSize = Size;
|
|
Status = ImageContext->ImageRead (
|
|
ImageContext->Handle,
|
|
DebugDirectoryEntryFileOffset + Index,
|
|
&Size,
|
|
&DebugEntry
|
|
);
|
|
if (RETURN_ERROR (Status) || (Size != ReadSize)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
|
|
if (Size != ReadSize) {
|
|
Status = RETURN_UNSUPPORTED;
|
|
}
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// From PeCoff spec, when DebugEntry.RVA == 0 means this debug info will not load into memory.
|
|
// Here we will always load EFI_IMAGE_DEBUG_TYPE_CODEVIEW type debug info. so need adjust the
|
|
// ImageContext->ImageSize when DebugEntry.RVA == 0.
|
|
//
|
|
if (DebugEntry.Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {
|
|
ImageContext->DebugDirectoryEntryRva = (UINT32) (DebugDirectoryEntryRva + Index);
|
|
if (DebugEntry.RVA == 0 && DebugEntry.FileOffset != 0) {
|
|
ImageContext->ImageSize += DebugEntry.SizeOfData;
|
|
}
|
|
|
|
return RETURN_SUCCESS;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
|
|
DebugDirectoryEntry = &Hdr.Te->DataDirectory[1];
|
|
DebugDirectoryEntryRva = DebugDirectoryEntry->VirtualAddress;
|
|
SectionHeaderOffset = (UINTN)(sizeof (EFI_TE_IMAGE_HEADER));
|
|
|
|
DebugDirectoryEntryFileOffset = 0;
|
|
|
|
for (Index = 0; Index < Hdr.Te->NumberOfSections;) {
|
|
//
|
|
// Read section header from file
|
|
//
|
|
Size = sizeof (EFI_IMAGE_SECTION_HEADER);
|
|
ReadSize = Size;
|
|
Status = ImageContext->ImageRead (
|
|
ImageContext->Handle,
|
|
SectionHeaderOffset,
|
|
&Size,
|
|
&SectionHeader
|
|
);
|
|
if (RETURN_ERROR (Status) || (Size != ReadSize)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
|
|
if (Size != ReadSize) {
|
|
Status = RETURN_UNSUPPORTED;
|
|
}
|
|
return Status;
|
|
}
|
|
|
|
if (DebugDirectoryEntryRva >= SectionHeader.VirtualAddress &&
|
|
DebugDirectoryEntryRva < SectionHeader.VirtualAddress + SectionHeader.Misc.VirtualSize) {
|
|
DebugDirectoryEntryFileOffset = DebugDirectoryEntryRva -
|
|
SectionHeader.VirtualAddress +
|
|
SectionHeader.PointerToRawData -
|
|
TeStrippedOffset;
|
|
|
|
//
|
|
// File offset of the debug directory was found, if this is not the last
|
|
// section, then skip to the last section for calculating the image size.
|
|
//
|
|
if (Index < (UINTN) Hdr.Te->NumberOfSections - 1) {
|
|
SectionHeaderOffset += (Hdr.Te->NumberOfSections - 1 - Index) * sizeof (EFI_IMAGE_SECTION_HEADER);
|
|
Index = Hdr.Te->NumberOfSections - 1;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
//
|
|
// In Te image header there is not a field to describe the ImageSize.
|
|
// Actually, the ImageSize equals the RVA plus the VirtualSize of
|
|
// the last section mapped into memory (Must be rounded up to
|
|
// a multiple of Section Alignment). Per the PE/COFF specification, the
|
|
// section headers in the Section Table must appear in order of the RVA
|
|
// values for the corresponding sections. So the ImageSize can be determined
|
|
// by the RVA and the VirtualSize of the last section header in the
|
|
// Section Table.
|
|
//
|
|
if ((++Index) == (UINTN)Hdr.Te->NumberOfSections) {
|
|
ImageContext->ImageSize = (SectionHeader.VirtualAddress + SectionHeader.Misc.VirtualSize) - TeStrippedOffset;
|
|
}
|
|
|
|
SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);
|
|
}
|
|
|
|
if (DebugDirectoryEntryFileOffset != 0) {
|
|
for (Index = 0; Index < DebugDirectoryEntry->Size; Index += sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY)) {
|
|
//
|
|
// Read next debug directory entry
|
|
//
|
|
Size = sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
|
|
ReadSize = Size;
|
|
Status = ImageContext->ImageRead (
|
|
ImageContext->Handle,
|
|
DebugDirectoryEntryFileOffset + Index,
|
|
&Size,
|
|
&DebugEntry
|
|
);
|
|
if (RETURN_ERROR (Status) || (Size != ReadSize)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
|
|
if (Size != ReadSize) {
|
|
Status = RETURN_UNSUPPORTED;
|
|
}
|
|
return Status;
|
|
}
|
|
|
|
if (DebugEntry.Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {
|
|
ImageContext->DebugDirectoryEntryRva = (UINT32) (DebugDirectoryEntryRva + Index);
|
|
return RETURN_SUCCESS;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return RETURN_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
Converts an image address to the loaded address.
|
|
|
|
@param ImageContext The context of the image being loaded.
|
|
@param Address The address to be converted to the loaded address.
|
|
@param TeStrippedOffset Stripped offset for TE image.
|
|
|
|
@return The converted address or NULL if the address can not be converted.
|
|
|
|
**/
|
|
VOID *
|
|
PeCoffLoaderImageAddress (
|
|
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext,
|
|
IN UINTN Address,
|
|
IN UINTN TeStrippedOffset
|
|
)
|
|
{
|
|
//
|
|
// Make sure that Address and ImageSize is correct for the loaded image.
|
|
//
|
|
if (Address >= ImageContext->ImageSize + TeStrippedOffset) {
|
|
ImageContext->ImageError = IMAGE_ERROR_INVALID_IMAGE_ADDRESS;
|
|
return NULL;
|
|
}
|
|
|
|
return (CHAR8 *)((UINTN) ImageContext->ImageAddress + Address - TeStrippedOffset);
|
|
}
|
|
|
|
/**
|
|
Applies relocation fixups to a PE/COFF image that was loaded with PeCoffLoaderLoadImage().
|
|
|
|
If the DestinationAddress field of ImageContext is 0, then use the ImageAddress field of
|
|
ImageContext as the relocation base address. Otherwise, use the DestinationAddress field
|
|
of ImageContext as the relocation base address. The caller must allocate the relocation
|
|
fixup log buffer and fill in the FixupData field of ImageContext prior to calling this function.
|
|
|
|
The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine, ImageType, ImageAddress,
|
|
ImageSize, DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders,
|
|
DebugDirectoryEntryRva, EntryPoint, FixupDataSize, CodeView, PdbPointer, and FixupData of
|
|
the ImageContext structure must be valid prior to invoking this service.
|
|
|
|
If ImageContext is NULL, then ASSERT().
|
|
|
|
Note that if the platform does not maintain coherency between the instruction cache(s) and the data
|
|
cache(s) in hardware, then the caller is responsible for performing cache maintenance operations
|
|
prior to transferring control to a PE/COFF image that is loaded using this library.
|
|
|
|
@param ImageContext The pointer to the image context structure that describes the PE/COFF
|
|
image that is being relocated.
|
|
|
|
@retval RETURN_SUCCESS The PE/COFF image was relocated.
|
|
Extended status information is in the ImageError field of ImageContext.
|
|
@retval RETURN_LOAD_ERROR The image in not a valid PE/COFF image.
|
|
Extended status information is in the ImageError field of ImageContext.
|
|
@retval RETURN_UNSUPPORTED A relocation record type is not supported.
|
|
Extended status information is in the ImageError field of ImageContext.
|
|
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
PeCoffLoaderRelocateImage (
|
|
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
|
|
)
|
|
{
|
|
RETURN_STATUS Status;
|
|
EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;
|
|
EFI_IMAGE_DATA_DIRECTORY *RelocDir;
|
|
UINT64 Adjust;
|
|
EFI_IMAGE_BASE_RELOCATION *RelocBaseOrg;
|
|
EFI_IMAGE_BASE_RELOCATION *RelocBase;
|
|
EFI_IMAGE_BASE_RELOCATION *RelocBaseEnd;
|
|
UINT16 *Reloc;
|
|
UINT16 *RelocEnd;
|
|
CHAR8 *Fixup;
|
|
CHAR8 *FixupBase;
|
|
UINT16 *Fixup16;
|
|
UINT32 *Fixup32;
|
|
UINT64 *Fixup64;
|
|
CHAR8 *FixupData;
|
|
PHYSICAL_ADDRESS BaseAddress;
|
|
UINT32 NumberOfRvaAndSizes;
|
|
UINT16 Magic;
|
|
UINT32 TeStrippedOffset;
|
|
|
|
ASSERT (ImageContext != NULL);
|
|
|
|
//
|
|
// Assume success
|
|
//
|
|
ImageContext->ImageError = IMAGE_ERROR_SUCCESS;
|
|
|
|
//
|
|
// If there are no relocation entries, then we are done
|
|
//
|
|
if (ImageContext->RelocationsStripped) {
|
|
// Applies additional environment specific actions to relocate fixups
|
|
// to a PE/COFF image if needed
|
|
PeCoffLoaderRelocateImageExtraAction (ImageContext);
|
|
return RETURN_SUCCESS;
|
|
}
|
|
|
|
//
|
|
// If the destination address is not 0, use that rather than the
|
|
// image address as the relocation target.
|
|
//
|
|
if (ImageContext->DestinationAddress != 0) {
|
|
BaseAddress = ImageContext->DestinationAddress;
|
|
} else {
|
|
BaseAddress = ImageContext->ImageAddress;
|
|
}
|
|
|
|
if (!(ImageContext->IsTeImage)) {
|
|
Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)ImageContext->ImageAddress + ImageContext->PeCoffHeaderOffset);
|
|
TeStrippedOffset = 0;
|
|
Magic = PeCoffLoaderGetPeHeaderMagicValue (Hdr);
|
|
|
|
if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
|
|
//
|
|
// Use PE32 offset
|
|
//
|
|
Adjust = (UINT64)BaseAddress - Hdr.Pe32->OptionalHeader.ImageBase;
|
|
if (Adjust != 0) {
|
|
Hdr.Pe32->OptionalHeader.ImageBase = (UINT32)BaseAddress;
|
|
}
|
|
|
|
NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;
|
|
RelocDir = &Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];
|
|
} else {
|
|
//
|
|
// Use PE32+ offset
|
|
//
|
|
Adjust = (UINT64) BaseAddress - Hdr.Pe32Plus->OptionalHeader.ImageBase;
|
|
if (Adjust != 0) {
|
|
Hdr.Pe32Plus->OptionalHeader.ImageBase = (UINT64)BaseAddress;
|
|
}
|
|
|
|
NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;
|
|
RelocDir = &Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];
|
|
}
|
|
|
|
//
|
|
// Find the relocation block
|
|
// Per the PE/COFF spec, you can't assume that a given data directory
|
|
// is present in the image. You have to check the NumberOfRvaAndSizes in
|
|
// the optional header to verify a desired directory entry is there.
|
|
//
|
|
if ((NumberOfRvaAndSizes < EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC)) {
|
|
RelocDir = NULL;
|
|
}
|
|
} else {
|
|
Hdr.Te = (EFI_TE_IMAGE_HEADER *)(UINTN)(ImageContext->ImageAddress);
|
|
TeStrippedOffset = (UINT32)Hdr.Te->StrippedSize - sizeof (EFI_TE_IMAGE_HEADER);
|
|
Adjust = (UINT64) (BaseAddress - (Hdr.Te->ImageBase + TeStrippedOffset));
|
|
if (Adjust != 0) {
|
|
Hdr.Te->ImageBase = (UINT64) (BaseAddress - TeStrippedOffset);
|
|
}
|
|
|
|
//
|
|
// Find the relocation block
|
|
//
|
|
RelocDir = &Hdr.Te->DataDirectory[0];
|
|
}
|
|
|
|
if ((RelocDir != NULL) && (RelocDir->Size > 0)) {
|
|
RelocBase = (EFI_IMAGE_BASE_RELOCATION *) PeCoffLoaderImageAddress (ImageContext, RelocDir->VirtualAddress, TeStrippedOffset);
|
|
RelocBaseEnd = (EFI_IMAGE_BASE_RELOCATION *) PeCoffLoaderImageAddress (ImageContext,
|
|
RelocDir->VirtualAddress + RelocDir->Size - 1,
|
|
TeStrippedOffset
|
|
);
|
|
if (RelocBase == NULL || RelocBaseEnd == NULL || RelocBaseEnd < RelocBase) {
|
|
ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
|
|
return RETURN_LOAD_ERROR;
|
|
}
|
|
} else {
|
|
//
|
|
// Set base and end to bypass processing below.
|
|
//
|
|
RelocBase = RelocBaseEnd = NULL;
|
|
}
|
|
RelocBaseOrg = RelocBase;
|
|
|
|
//
|
|
// If Adjust is not zero, then apply fix ups to the image
|
|
//
|
|
if (Adjust != 0) {
|
|
//
|
|
// Run the relocation information and apply the fixups
|
|
//
|
|
FixupData = ImageContext->FixupData;
|
|
while (RelocBase < RelocBaseEnd) {
|
|
|
|
Reloc = (UINT16 *) ((CHAR8 *) RelocBase + sizeof (EFI_IMAGE_BASE_RELOCATION));
|
|
//
|
|
// Add check for RelocBase->SizeOfBlock field.
|
|
//
|
|
if (RelocBase->SizeOfBlock == 0) {
|
|
ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
|
|
return RETURN_LOAD_ERROR;
|
|
}
|
|
if ((UINTN)RelocBase > MAX_ADDRESS - RelocBase->SizeOfBlock) {
|
|
ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
|
|
return RETURN_LOAD_ERROR;
|
|
}
|
|
|
|
RelocEnd = (UINT16 *) ((CHAR8 *) RelocBase + RelocBase->SizeOfBlock);
|
|
if ((UINTN)RelocEnd > (UINTN)RelocBaseOrg + RelocDir->Size) {
|
|
ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
|
|
return RETURN_LOAD_ERROR;
|
|
}
|
|
FixupBase = PeCoffLoaderImageAddress (ImageContext, RelocBase->VirtualAddress, TeStrippedOffset);
|
|
if (FixupBase == NULL) {
|
|
ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
|
|
return RETURN_LOAD_ERROR;
|
|
}
|
|
|
|
//
|
|
// Run this relocation record
|
|
//
|
|
while (Reloc < RelocEnd) {
|
|
Fixup = PeCoffLoaderImageAddress (ImageContext, RelocBase->VirtualAddress + (*Reloc & 0xFFF), TeStrippedOffset);
|
|
if (Fixup == NULL) {
|
|
ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
|
|
return RETURN_LOAD_ERROR;
|
|
}
|
|
switch ((*Reloc) >> 12) {
|
|
case EFI_IMAGE_REL_BASED_ABSOLUTE:
|
|
break;
|
|
|
|
case EFI_IMAGE_REL_BASED_HIGH:
|
|
Fixup16 = (UINT16 *) Fixup;
|
|
*Fixup16 = (UINT16) (*Fixup16 + ((UINT16) ((UINT32) Adjust >> 16)));
|
|
if (FixupData != NULL) {
|
|
*(UINT16 *) FixupData = *Fixup16;
|
|
FixupData = FixupData + sizeof (UINT16);
|
|
}
|
|
break;
|
|
|
|
case EFI_IMAGE_REL_BASED_LOW:
|
|
Fixup16 = (UINT16 *) Fixup;
|
|
*Fixup16 = (UINT16) (*Fixup16 + (UINT16) Adjust);
|
|
if (FixupData != NULL) {
|
|
*(UINT16 *) FixupData = *Fixup16;
|
|
FixupData = FixupData + sizeof (UINT16);
|
|
}
|
|
break;
|
|
|
|
case EFI_IMAGE_REL_BASED_HIGHLOW:
|
|
Fixup32 = (UINT32 *) Fixup;
|
|
*Fixup32 = *Fixup32 + (UINT32) Adjust;
|
|
if (FixupData != NULL) {
|
|
FixupData = ALIGN_POINTER (FixupData, sizeof (UINT32));
|
|
*(UINT32 *)FixupData = *Fixup32;
|
|
FixupData = FixupData + sizeof (UINT32);
|
|
}
|
|
break;
|
|
|
|
case EFI_IMAGE_REL_BASED_DIR64:
|
|
Fixup64 = (UINT64 *) Fixup;
|
|
*Fixup64 = *Fixup64 + (UINT64) Adjust;
|
|
if (FixupData != NULL) {
|
|
FixupData = ALIGN_POINTER (FixupData, sizeof(UINT64));
|
|
*(UINT64 *)(FixupData) = *Fixup64;
|
|
FixupData = FixupData + sizeof(UINT64);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
//
|
|
// The common code does not handle some of the stranger IPF relocations
|
|
// PeCoffLoaderRelocateImageEx () adds support for these complex fixups
|
|
// on IPF and is a No-Op on other architectures.
|
|
//
|
|
Status = PeCoffLoaderRelocateImageEx (Reloc, Fixup, &FixupData, Adjust);
|
|
if (RETURN_ERROR (Status)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Next relocation record
|
|
//
|
|
Reloc += 1;
|
|
}
|
|
|
|
//
|
|
// Next reloc block
|
|
//
|
|
RelocBase = (EFI_IMAGE_BASE_RELOCATION *) RelocEnd;
|
|
}
|
|
ASSERT ((UINTN)FixupData <= (UINTN)ImageContext->FixupData + ImageContext->FixupDataSize);
|
|
|
|
//
|
|
// Adjust the EntryPoint to match the linked-to address
|
|
//
|
|
if (ImageContext->DestinationAddress != 0) {
|
|
ImageContext->EntryPoint -= (UINT64) ImageContext->ImageAddress;
|
|
ImageContext->EntryPoint += (UINT64) ImageContext->DestinationAddress;
|
|
}
|
|
}
|
|
|
|
// Applies additional environment specific actions to relocate fixups
|
|
// to a PE/COFF image if needed
|
|
PeCoffLoaderRelocateImageExtraAction (ImageContext);
|
|
|
|
return RETURN_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Loads a PE/COFF image into memory.
|
|
|
|
Loads the PE/COFF image accessed through the ImageRead service of ImageContext into the buffer
|
|
specified by the ImageAddress and ImageSize fields of ImageContext. The caller must allocate
|
|
the load buffer and fill in the ImageAddress and ImageSize fields prior to calling this function.
|
|
The EntryPoint, FixupDataSize, CodeView, PdbPointer and HiiResourceData fields of ImageContext are computed.
|
|
The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine, ImageType, ImageAddress, ImageSize,
|
|
DestinationAddress, RelocationsStripped, SectionAlignment, SizeOfHeaders, and DebugDirectoryEntryRva
|
|
fields of the ImageContext structure must be valid prior to invoking this service.
|
|
|
|
If ImageContext is NULL, then ASSERT().
|
|
|
|
Note that if the platform does not maintain coherency between the instruction cache(s) and the data
|
|
cache(s) in hardware, then the caller is responsible for performing cache maintenance operations
|
|
prior to transferring control to a PE/COFF image that is loaded using this library.
|
|
|
|
@param ImageContext The pointer to the image context structure that describes the PE/COFF
|
|
image that is being loaded.
|
|
|
|
@retval RETURN_SUCCESS The PE/COFF image was loaded into the buffer specified by
|
|
the ImageAddress and ImageSize fields of ImageContext.
|
|
Extended status information is in the ImageError field of ImageContext.
|
|
@retval RETURN_BUFFER_TOO_SMALL The caller did not provide a large enough buffer.
|
|
Extended status information is in the ImageError field of ImageContext.
|
|
@retval RETURN_LOAD_ERROR The PE/COFF image is an EFI Runtime image with no relocations.
|
|
Extended status information is in the ImageError field of ImageContext.
|
|
@retval RETURN_INVALID_PARAMETER The image address is invalid.
|
|
Extended status information is in the ImageError field of ImageContext.
|
|
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
PeCoffLoaderLoadImage (
|
|
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
|
|
)
|
|
{
|
|
RETURN_STATUS Status;
|
|
EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;
|
|
PE_COFF_LOADER_IMAGE_CONTEXT CheckContext;
|
|
EFI_IMAGE_SECTION_HEADER *FirstSection;
|
|
EFI_IMAGE_SECTION_HEADER *Section;
|
|
UINTN NumberOfSections;
|
|
UINTN Index;
|
|
CHAR8 *Base;
|
|
CHAR8 *End;
|
|
EFI_IMAGE_DATA_DIRECTORY *DirectoryEntry;
|
|
EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *DebugEntry;
|
|
UINTN Size;
|
|
UINT32 TempDebugEntryRva;
|
|
UINT32 NumberOfRvaAndSizes;
|
|
UINT16 Magic;
|
|
EFI_IMAGE_RESOURCE_DIRECTORY *ResourceDirectory;
|
|
EFI_IMAGE_RESOURCE_DIRECTORY_ENTRY *ResourceDirectoryEntry;
|
|
EFI_IMAGE_RESOURCE_DIRECTORY_STRING *ResourceDirectoryString;
|
|
EFI_IMAGE_RESOURCE_DATA_ENTRY *ResourceDataEntry;
|
|
CHAR16 *String;
|
|
UINT32 Offset;
|
|
UINT32 TeStrippedOffset;
|
|
|
|
ASSERT (ImageContext != NULL);
|
|
|
|
//
|
|
// Assume success
|
|
//
|
|
ImageContext->ImageError = IMAGE_ERROR_SUCCESS;
|
|
|
|
//
|
|
// Copy the provided context information into our local version, get what we
|
|
// can from the original image, and then use that to make sure everything
|
|
// is legit.
|
|
//
|
|
CopyMem (&CheckContext, ImageContext, sizeof (PE_COFF_LOADER_IMAGE_CONTEXT));
|
|
|
|
Status = PeCoffLoaderGetImageInfo (&CheckContext);
|
|
if (RETURN_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// Make sure there is enough allocated space for the image being loaded
|
|
//
|
|
if (ImageContext->ImageSize < CheckContext.ImageSize) {
|
|
ImageContext->ImageError = IMAGE_ERROR_INVALID_IMAGE_SIZE;
|
|
return RETURN_BUFFER_TOO_SMALL;
|
|
}
|
|
if (ImageContext->ImageAddress == 0) {
|
|
//
|
|
// Image cannot be loaded into 0 address.
|
|
//
|
|
ImageContext->ImageError = IMAGE_ERROR_INVALID_IMAGE_ADDRESS;
|
|
return RETURN_INVALID_PARAMETER;
|
|
}
|
|
//
|
|
// If there's no relocations, then make sure it's not a runtime driver,
|
|
// and that it's being loaded at the linked address.
|
|
//
|
|
if (CheckContext.RelocationsStripped) {
|
|
//
|
|
// If the image does not contain relocations and it is a runtime driver
|
|
// then return an error.
|
|
//
|
|
if (CheckContext.ImageType == EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER) {
|
|
ImageContext->ImageError = IMAGE_ERROR_INVALID_SUBSYSTEM;
|
|
return RETURN_LOAD_ERROR;
|
|
}
|
|
//
|
|
// If the image does not contain relocations, and the requested load address
|
|
// is not the linked address, then return an error.
|
|
//
|
|
if (CheckContext.ImageAddress != ImageContext->ImageAddress) {
|
|
ImageContext->ImageError = IMAGE_ERROR_INVALID_IMAGE_ADDRESS;
|
|
return RETURN_INVALID_PARAMETER;
|
|
}
|
|
}
|
|
//
|
|
// Make sure the allocated space has the proper section alignment
|
|
//
|
|
if (!(ImageContext->IsTeImage)) {
|
|
if ((ImageContext->ImageAddress & (CheckContext.SectionAlignment - 1)) != 0) {
|
|
ImageContext->ImageError = IMAGE_ERROR_INVALID_SECTION_ALIGNMENT;
|
|
return RETURN_INVALID_PARAMETER;
|
|
}
|
|
}
|
|
//
|
|
// Read the entire PE/COFF or TE header into memory
|
|
//
|
|
if (!(ImageContext->IsTeImage)) {
|
|
Status = ImageContext->ImageRead (
|
|
ImageContext->Handle,
|
|
0,
|
|
&ImageContext->SizeOfHeaders,
|
|
(VOID *) (UINTN) ImageContext->ImageAddress
|
|
);
|
|
|
|
Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)ImageContext->ImageAddress + ImageContext->PeCoffHeaderOffset);
|
|
|
|
FirstSection = (EFI_IMAGE_SECTION_HEADER *) (
|
|
(UINTN)ImageContext->ImageAddress +
|
|
ImageContext->PeCoffHeaderOffset +
|
|
sizeof(UINT32) +
|
|
sizeof(EFI_IMAGE_FILE_HEADER) +
|
|
Hdr.Pe32->FileHeader.SizeOfOptionalHeader
|
|
);
|
|
NumberOfSections = (UINTN) (Hdr.Pe32->FileHeader.NumberOfSections);
|
|
TeStrippedOffset = 0;
|
|
} else {
|
|
Status = ImageContext->ImageRead (
|
|
ImageContext->Handle,
|
|
0,
|
|
&ImageContext->SizeOfHeaders,
|
|
(void *)(UINTN)ImageContext->ImageAddress
|
|
);
|
|
|
|
Hdr.Te = (EFI_TE_IMAGE_HEADER *)(UINTN)(ImageContext->ImageAddress);
|
|
FirstSection = (EFI_IMAGE_SECTION_HEADER *) (
|
|
(UINTN)ImageContext->ImageAddress +
|
|
sizeof(EFI_TE_IMAGE_HEADER)
|
|
);
|
|
NumberOfSections = (UINTN) (Hdr.Te->NumberOfSections);
|
|
TeStrippedOffset = (UINT32) Hdr.Te->StrippedSize - sizeof (EFI_TE_IMAGE_HEADER);
|
|
}
|
|
|
|
if (RETURN_ERROR (Status)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
|
|
return RETURN_LOAD_ERROR;
|
|
}
|
|
|
|
//
|
|
// Load each section of the image
|
|
//
|
|
Section = FirstSection;
|
|
for (Index = 0; Index < NumberOfSections; Index++) {
|
|
//
|
|
// Read the section
|
|
//
|
|
Size = (UINTN) Section->Misc.VirtualSize;
|
|
if ((Size == 0) || (Size > Section->SizeOfRawData)) {
|
|
Size = (UINTN) Section->SizeOfRawData;
|
|
}
|
|
|
|
//
|
|
// Compute sections address
|
|
//
|
|
Base = PeCoffLoaderImageAddress (ImageContext, Section->VirtualAddress, TeStrippedOffset);
|
|
End = PeCoffLoaderImageAddress (ImageContext, Section->VirtualAddress + Section->Misc.VirtualSize - 1, TeStrippedOffset);
|
|
|
|
//
|
|
// If the size of the section is non-zero and the base address or end address resolved to 0, then fail.
|
|
//
|
|
if ((Size > 0) && ((Base == NULL) || (End == NULL))) {
|
|
ImageContext->ImageError = IMAGE_ERROR_SECTION_NOT_LOADED;
|
|
return RETURN_LOAD_ERROR;
|
|
}
|
|
|
|
if (Section->SizeOfRawData > 0) {
|
|
Status = ImageContext->ImageRead (
|
|
ImageContext->Handle,
|
|
Section->PointerToRawData - TeStrippedOffset,
|
|
&Size,
|
|
Base
|
|
);
|
|
if (RETURN_ERROR (Status)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
//
|
|
// If raw size is less then virtual size, zero fill the remaining
|
|
//
|
|
|
|
if (Size < Section->Misc.VirtualSize) {
|
|
ZeroMem (Base + Size, Section->Misc.VirtualSize - Size);
|
|
}
|
|
|
|
//
|
|
// Next Section
|
|
//
|
|
Section += 1;
|
|
}
|
|
|
|
//
|
|
// Get image's entry point
|
|
//
|
|
Magic = PeCoffLoaderGetPeHeaderMagicValue (Hdr);
|
|
if (!(ImageContext->IsTeImage)) {
|
|
//
|
|
// Sizes of AddressOfEntryPoint are different so we need to do this safely
|
|
//
|
|
if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
|
|
//
|
|
// Use PE32 offset
|
|
//
|
|
ImageContext->EntryPoint = (PHYSICAL_ADDRESS)(UINTN)PeCoffLoaderImageAddress (
|
|
ImageContext,
|
|
(UINTN)Hdr.Pe32->OptionalHeader.AddressOfEntryPoint,
|
|
0
|
|
);
|
|
} else {
|
|
//
|
|
// Use PE32+ offset
|
|
//
|
|
ImageContext->EntryPoint = (PHYSICAL_ADDRESS)(UINTN)PeCoffLoaderImageAddress (
|
|
ImageContext,
|
|
(UINTN)Hdr.Pe32Plus->OptionalHeader.AddressOfEntryPoint,
|
|
0
|
|
);
|
|
}
|
|
} else {
|
|
ImageContext->EntryPoint = (PHYSICAL_ADDRESS)(UINTN)PeCoffLoaderImageAddress (
|
|
ImageContext,
|
|
(UINTN)Hdr.Te->AddressOfEntryPoint,
|
|
TeStrippedOffset
|
|
);
|
|
}
|
|
|
|
//
|
|
// Determine the size of the fixup data
|
|
//
|
|
// Per the PE/COFF spec, you can't assume that a given data directory
|
|
// is present in the image. You have to check the NumberOfRvaAndSizes in
|
|
// the optional header to verify a desired directory entry is there.
|
|
//
|
|
if (!(ImageContext->IsTeImage)) {
|
|
if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
|
|
//
|
|
// Use PE32 offset
|
|
//
|
|
NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;
|
|
DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];
|
|
} else {
|
|
//
|
|
// Use PE32+ offset
|
|
//
|
|
NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;
|
|
DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];
|
|
}
|
|
|
|
//
|
|
// Must use UINT64 here, because there might a case that 32bit loader to load 64bit image.
|
|
//
|
|
if (NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC) {
|
|
ImageContext->FixupDataSize = DirectoryEntry->Size / sizeof (UINT16) * sizeof (UINT64);
|
|
} else {
|
|
ImageContext->FixupDataSize = 0;
|
|
}
|
|
} else {
|
|
DirectoryEntry = &Hdr.Te->DataDirectory[0];
|
|
ImageContext->FixupDataSize = DirectoryEntry->Size / sizeof (UINT16) * sizeof (UINT64);
|
|
}
|
|
//
|
|
// Consumer must allocate a buffer for the relocation fixup log.
|
|
// Only used for runtime drivers.
|
|
//
|
|
ImageContext->FixupData = NULL;
|
|
|
|
//
|
|
// Load the Codeview information if present
|
|
//
|
|
if (ImageContext->DebugDirectoryEntryRva != 0) {
|
|
DebugEntry = PeCoffLoaderImageAddress (
|
|
ImageContext,
|
|
ImageContext->DebugDirectoryEntryRva,
|
|
TeStrippedOffset
|
|
);
|
|
if (DebugEntry == NULL) {
|
|
ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
|
|
return RETURN_LOAD_ERROR;
|
|
}
|
|
|
|
TempDebugEntryRva = DebugEntry->RVA;
|
|
if (DebugEntry->RVA == 0 && DebugEntry->FileOffset != 0) {
|
|
Section--;
|
|
if ((UINTN)Section->SizeOfRawData < Section->Misc.VirtualSize) {
|
|
TempDebugEntryRva = Section->VirtualAddress + Section->Misc.VirtualSize;
|
|
} else {
|
|
TempDebugEntryRva = Section->VirtualAddress + Section->SizeOfRawData;
|
|
}
|
|
}
|
|
|
|
if (TempDebugEntryRva != 0) {
|
|
ImageContext->CodeView = PeCoffLoaderImageAddress (ImageContext, TempDebugEntryRva, TeStrippedOffset);
|
|
if (ImageContext->CodeView == NULL) {
|
|
ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
|
|
return RETURN_LOAD_ERROR;
|
|
}
|
|
|
|
if (DebugEntry->RVA == 0) {
|
|
Size = DebugEntry->SizeOfData;
|
|
Status = ImageContext->ImageRead (
|
|
ImageContext->Handle,
|
|
DebugEntry->FileOffset - TeStrippedOffset,
|
|
&Size,
|
|
ImageContext->CodeView
|
|
);
|
|
//
|
|
// Should we apply fix up to this field according to the size difference between PE and TE?
|
|
// Because now we maintain TE header fields unfixed, this field will also remain as they are
|
|
// in original PE image.
|
|
//
|
|
|
|
if (RETURN_ERROR (Status)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_IMAGE_READ;
|
|
return RETURN_LOAD_ERROR;
|
|
}
|
|
|
|
DebugEntry->RVA = TempDebugEntryRva;
|
|
}
|
|
|
|
switch (*(UINT32 *) ImageContext->CodeView) {
|
|
case CODEVIEW_SIGNATURE_NB10:
|
|
if (DebugEntry->SizeOfData < sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
ImageContext->PdbPointer = (CHAR8 *)ImageContext->CodeView + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY);
|
|
break;
|
|
|
|
case CODEVIEW_SIGNATURE_RSDS:
|
|
if (DebugEntry->SizeOfData < sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
ImageContext->PdbPointer = (CHAR8 *)ImageContext->CodeView + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY);
|
|
break;
|
|
|
|
case CODEVIEW_SIGNATURE_MTOC:
|
|
if (DebugEntry->SizeOfData < sizeof (EFI_IMAGE_DEBUG_CODEVIEW_MTOC_ENTRY)) {
|
|
ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
ImageContext->PdbPointer = (CHAR8 *)ImageContext->CodeView + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_MTOC_ENTRY);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Get Image's HII resource section
|
|
//
|
|
ImageContext->HiiResourceData = 0;
|
|
if (!(ImageContext->IsTeImage)) {
|
|
if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
|
|
//
|
|
// Use PE32 offset
|
|
//
|
|
NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;
|
|
DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE];
|
|
} else {
|
|
//
|
|
// Use PE32+ offset
|
|
//
|
|
NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;
|
|
DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE];
|
|
}
|
|
|
|
if (NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE && DirectoryEntry->Size != 0) {
|
|
Base = PeCoffLoaderImageAddress (ImageContext, DirectoryEntry->VirtualAddress, 0);
|
|
if (Base != NULL) {
|
|
ResourceDirectory = (EFI_IMAGE_RESOURCE_DIRECTORY *) Base;
|
|
Offset = sizeof (EFI_IMAGE_RESOURCE_DIRECTORY) + sizeof (EFI_IMAGE_RESOURCE_DIRECTORY_ENTRY) *
|
|
(ResourceDirectory->NumberOfNamedEntries + ResourceDirectory->NumberOfIdEntries);
|
|
if (Offset > DirectoryEntry->Size) {
|
|
ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
ResourceDirectoryEntry = (EFI_IMAGE_RESOURCE_DIRECTORY_ENTRY *) (ResourceDirectory + 1);
|
|
|
|
for (Index = 0; Index < ResourceDirectory->NumberOfNamedEntries; Index++) {
|
|
if (ResourceDirectoryEntry->u1.s.NameIsString) {
|
|
//
|
|
// Check the ResourceDirectoryEntry->u1.s.NameOffset before use it.
|
|
//
|
|
if (ResourceDirectoryEntry->u1.s.NameOffset >= DirectoryEntry->Size) {
|
|
ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
ResourceDirectoryString = (EFI_IMAGE_RESOURCE_DIRECTORY_STRING *) (Base + ResourceDirectoryEntry->u1.s.NameOffset);
|
|
String = &ResourceDirectoryString->String[0];
|
|
|
|
if (ResourceDirectoryString->Length == 3 &&
|
|
String[0] == L'H' &&
|
|
String[1] == L'I' &&
|
|
String[2] == L'I') {
|
|
//
|
|
// Resource Type "HII" found
|
|
//
|
|
if (ResourceDirectoryEntry->u2.s.DataIsDirectory) {
|
|
//
|
|
// Move to next level - resource Name
|
|
//
|
|
if (ResourceDirectoryEntry->u2.s.OffsetToDirectory >= DirectoryEntry->Size) {
|
|
ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
ResourceDirectory = (EFI_IMAGE_RESOURCE_DIRECTORY *) (Base + ResourceDirectoryEntry->u2.s.OffsetToDirectory);
|
|
Offset = ResourceDirectoryEntry->u2.s.OffsetToDirectory + sizeof (EFI_IMAGE_RESOURCE_DIRECTORY) +
|
|
sizeof (EFI_IMAGE_RESOURCE_DIRECTORY_ENTRY) * (ResourceDirectory->NumberOfNamedEntries + ResourceDirectory->NumberOfIdEntries);
|
|
if (Offset > DirectoryEntry->Size) {
|
|
ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
ResourceDirectoryEntry = (EFI_IMAGE_RESOURCE_DIRECTORY_ENTRY *) (ResourceDirectory + 1);
|
|
|
|
if (ResourceDirectoryEntry->u2.s.DataIsDirectory) {
|
|
//
|
|
// Move to next level - resource Language
|
|
//
|
|
if (ResourceDirectoryEntry->u2.s.OffsetToDirectory >= DirectoryEntry->Size) {
|
|
ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
ResourceDirectory = (EFI_IMAGE_RESOURCE_DIRECTORY *) (Base + ResourceDirectoryEntry->u2.s.OffsetToDirectory);
|
|
Offset = ResourceDirectoryEntry->u2.s.OffsetToDirectory + sizeof (EFI_IMAGE_RESOURCE_DIRECTORY) +
|
|
sizeof (EFI_IMAGE_RESOURCE_DIRECTORY_ENTRY) * (ResourceDirectory->NumberOfNamedEntries + ResourceDirectory->NumberOfIdEntries);
|
|
if (Offset > DirectoryEntry->Size) {
|
|
ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
ResourceDirectoryEntry = (EFI_IMAGE_RESOURCE_DIRECTORY_ENTRY *) (ResourceDirectory + 1);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Now it ought to be resource Data
|
|
//
|
|
if (!ResourceDirectoryEntry->u2.s.DataIsDirectory) {
|
|
if (ResourceDirectoryEntry->u2.OffsetToData >= DirectoryEntry->Size) {
|
|
ImageContext->ImageError = IMAGE_ERROR_UNSUPPORTED;
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
ResourceDataEntry = (EFI_IMAGE_RESOURCE_DATA_ENTRY *) (Base + ResourceDirectoryEntry->u2.OffsetToData);
|
|
ImageContext->HiiResourceData = (PHYSICAL_ADDRESS) (UINTN) PeCoffLoaderImageAddress (ImageContext, ResourceDataEntry->OffsetToData, 0);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
ResourceDirectoryEntry++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
/**
|
|
Reapply fixups on a fixed up PE32/PE32+ image to allow virutal calling at EFI
|
|
runtime.
|
|
|
|
This function reapplies relocation fixups to the PE/COFF image specified by ImageBase
|
|
and ImageSize so the image will execute correctly when the PE/COFF image is mapped
|
|
to the address specified by VirtualImageBase. RelocationData must be identical
|
|
to the FiuxupData buffer from the PE_COFF_LOADER_IMAGE_CONTEXT structure
|
|
after this PE/COFF image was relocated with PeCoffLoaderRelocateImage().
|
|
|
|
Note that if the platform does not maintain coherency between the instruction cache(s) and the data
|
|
cache(s) in hardware, then the caller is responsible for performing cache maintenance operations
|
|
prior to transferring control to a PE/COFF image that is loaded using this library.
|
|
|
|
@param ImageBase The base address of a PE/COFF image that has been loaded
|
|
and relocated into system memory.
|
|
@param VirtImageBase The request virtual address that the PE/COFF image is to
|
|
be fixed up for.
|
|
@param ImageSize The size, in bytes, of the PE/COFF image.
|
|
@param RelocationData A pointer to the relocation data that was collected when the PE/COFF
|
|
image was relocated using PeCoffLoaderRelocateImage().
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
PeCoffLoaderRelocateImageForRuntime (
|
|
IN PHYSICAL_ADDRESS ImageBase,
|
|
IN PHYSICAL_ADDRESS VirtImageBase,
|
|
IN UINTN ImageSize,
|
|
IN VOID *RelocationData
|
|
)
|
|
{
|
|
CHAR8 *OldBase;
|
|
CHAR8 *NewBase;
|
|
EFI_IMAGE_DOS_HEADER *DosHdr;
|
|
EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;
|
|
UINT32 NumberOfRvaAndSizes;
|
|
EFI_IMAGE_DATA_DIRECTORY *DataDirectory;
|
|
EFI_IMAGE_DATA_DIRECTORY *RelocDir;
|
|
EFI_IMAGE_BASE_RELOCATION *RelocBase;
|
|
EFI_IMAGE_BASE_RELOCATION *RelocBaseEnd;
|
|
UINT16 *Reloc;
|
|
UINT16 *RelocEnd;
|
|
CHAR8 *Fixup;
|
|
CHAR8 *FixupBase;
|
|
UINT16 *Fixup16;
|
|
UINT32 *Fixup32;
|
|
UINT64 *Fixup64;
|
|
CHAR8 *FixupData;
|
|
UINTN Adjust;
|
|
RETURN_STATUS Status;
|
|
UINT16 Magic;
|
|
|
|
OldBase = (CHAR8 *)((UINTN)ImageBase);
|
|
NewBase = (CHAR8 *)((UINTN)VirtImageBase);
|
|
Adjust = (UINTN) NewBase - (UINTN) OldBase;
|
|
|
|
//
|
|
// Find the image's relocate dir info
|
|
//
|
|
DosHdr = (EFI_IMAGE_DOS_HEADER *)OldBase;
|
|
if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
|
|
//
|
|
// Valid DOS header so get address of PE header
|
|
//
|
|
Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)(((CHAR8 *)DosHdr) + DosHdr->e_lfanew);
|
|
} else {
|
|
//
|
|
// No Dos header so assume image starts with PE header.
|
|
//
|
|
Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)OldBase;
|
|
}
|
|
|
|
if (Hdr.Pe32->Signature != EFI_IMAGE_NT_SIGNATURE) {
|
|
//
|
|
// Not a valid PE image so Exit
|
|
//
|
|
return ;
|
|
}
|
|
|
|
Magic = PeCoffLoaderGetPeHeaderMagicValue (Hdr);
|
|
|
|
if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
|
|
//
|
|
// Use PE32 offset
|
|
//
|
|
NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;
|
|
DataDirectory = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32->OptionalHeader.DataDirectory[0]);
|
|
} else {
|
|
//
|
|
// Use PE32+ offset
|
|
//
|
|
NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;
|
|
DataDirectory = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32Plus->OptionalHeader.DataDirectory[0]);
|
|
}
|
|
|
|
//
|
|
// Find the relocation block
|
|
//
|
|
// Per the PE/COFF spec, you can't assume that a given data directory
|
|
// is present in the image. You have to check the NumberOfRvaAndSizes in
|
|
// the optional header to verify a desired directory entry is there.
|
|
//
|
|
if (NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC) {
|
|
RelocDir = DataDirectory + EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC;
|
|
RelocBase = (EFI_IMAGE_BASE_RELOCATION *)(UINTN)(ImageBase + RelocDir->VirtualAddress);
|
|
RelocBaseEnd = (EFI_IMAGE_BASE_RELOCATION *)(UINTN)(ImageBase + RelocDir->VirtualAddress + RelocDir->Size);
|
|
} else {
|
|
//
|
|
// Cannot find relocations, cannot continue to relocate the image, ASSERT for this invalid image.
|
|
//
|
|
ASSERT (FALSE);
|
|
return ;
|
|
}
|
|
|
|
//
|
|
// ASSERT for the invalid image when RelocBase and RelocBaseEnd are both NULL.
|
|
//
|
|
ASSERT (RelocBase != NULL && RelocBaseEnd != NULL);
|
|
|
|
//
|
|
// Run the whole relocation block. And re-fixup data that has not been
|
|
// modified. The FixupData is used to see if the image has been modified
|
|
// since it was relocated. This is so data sections that have been updated
|
|
// by code will not be fixed up, since that would set them back to
|
|
// defaults.
|
|
//
|
|
FixupData = RelocationData;
|
|
while (RelocBase < RelocBaseEnd) {
|
|
//
|
|
// Add check for RelocBase->SizeOfBlock field.
|
|
//
|
|
if ((RelocBase->SizeOfBlock == 0) || (RelocBase->SizeOfBlock > RelocDir->Size)) {
|
|
//
|
|
// Data invalid, cannot continue to relocate the image, just return.
|
|
//
|
|
return;
|
|
}
|
|
|
|
Reloc = (UINT16 *) ((UINT8 *) RelocBase + sizeof (EFI_IMAGE_BASE_RELOCATION));
|
|
RelocEnd = (UINT16 *) ((UINT8 *) RelocBase + RelocBase->SizeOfBlock);
|
|
FixupBase = (CHAR8 *) ((UINTN)ImageBase) + RelocBase->VirtualAddress;
|
|
|
|
//
|
|
// Run this relocation record
|
|
//
|
|
while (Reloc < RelocEnd) {
|
|
|
|
Fixup = FixupBase + (*Reloc & 0xFFF);
|
|
switch ((*Reloc) >> 12) {
|
|
|
|
case EFI_IMAGE_REL_BASED_ABSOLUTE:
|
|
break;
|
|
|
|
case EFI_IMAGE_REL_BASED_HIGH:
|
|
Fixup16 = (UINT16 *) Fixup;
|
|
if (*(UINT16 *) FixupData == *Fixup16) {
|
|
*Fixup16 = (UINT16) (*Fixup16 + ((UINT16) ((UINT32) Adjust >> 16)));
|
|
}
|
|
|
|
FixupData = FixupData + sizeof (UINT16);
|
|
break;
|
|
|
|
case EFI_IMAGE_REL_BASED_LOW:
|
|
Fixup16 = (UINT16 *) Fixup;
|
|
if (*(UINT16 *) FixupData == *Fixup16) {
|
|
*Fixup16 = (UINT16) (*Fixup16 + ((UINT16) Adjust & 0xffff));
|
|
}
|
|
|
|
FixupData = FixupData + sizeof (UINT16);
|
|
break;
|
|
|
|
case EFI_IMAGE_REL_BASED_HIGHLOW:
|
|
Fixup32 = (UINT32 *) Fixup;
|
|
FixupData = ALIGN_POINTER (FixupData, sizeof (UINT32));
|
|
if (*(UINT32 *) FixupData == *Fixup32) {
|
|
*Fixup32 = *Fixup32 + (UINT32) Adjust;
|
|
}
|
|
|
|
FixupData = FixupData + sizeof (UINT32);
|
|
break;
|
|
|
|
case EFI_IMAGE_REL_BASED_DIR64:
|
|
Fixup64 = (UINT64 *)Fixup;
|
|
FixupData = ALIGN_POINTER (FixupData, sizeof (UINT64));
|
|
if (*(UINT64 *) FixupData == *Fixup64) {
|
|
*Fixup64 = *Fixup64 + (UINT64)Adjust;
|
|
}
|
|
|
|
FixupData = FixupData + sizeof (UINT64);
|
|
break;
|
|
|
|
default:
|
|
//
|
|
// Only Itanium requires ConvertPeImage_Ex
|
|
//
|
|
Status = PeHotRelocateImageEx (Reloc, Fixup, &FixupData, Adjust);
|
|
if (RETURN_ERROR (Status)) {
|
|
return ;
|
|
}
|
|
}
|
|
//
|
|
// Next relocation record
|
|
//
|
|
Reloc += 1;
|
|
}
|
|
//
|
|
// next reloc block
|
|
//
|
|
RelocBase = (EFI_IMAGE_BASE_RELOCATION *) RelocEnd;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
Reads contents of a PE/COFF image from a buffer in system memory.
|
|
|
|
This is the default implementation of a PE_COFF_LOADER_READ_FILE function
|
|
that assumes FileHandle pointer to the beginning of a PE/COFF image.
|
|
This function reads contents of the PE/COFF image that starts at the system memory
|
|
address specified by FileHandle. The read operation copies ReadSize bytes from the
|
|
PE/COFF image starting at byte offset FileOffset into the buffer specified by Buffer.
|
|
The size of the buffer actually read is returned in ReadSize.
|
|
|
|
The caller must make sure the FileOffset and ReadSize within the file scope.
|
|
|
|
If FileHandle is NULL, then ASSERT().
|
|
If ReadSize is NULL, then ASSERT().
|
|
If Buffer is NULL, then ASSERT().
|
|
|
|
@param FileHandle The pointer to base of the input stream
|
|
@param FileOffset Offset into the PE/COFF image to begin the read operation.
|
|
@param ReadSize On input, the size in bytes of the requested read operation.
|
|
On output, the number of bytes actually read.
|
|
@param Buffer Output buffer that contains the data read from the PE/COFF image.
|
|
|
|
@retval RETURN_SUCCESS Data is read from FileOffset from the Handle into
|
|
the buffer.
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
PeCoffLoaderImageReadFromMemory (
|
|
IN VOID *FileHandle,
|
|
IN UINTN FileOffset,
|
|
IN OUT UINTN *ReadSize,
|
|
OUT VOID *Buffer
|
|
)
|
|
{
|
|
ASSERT (ReadSize != NULL);
|
|
ASSERT (FileHandle != NULL);
|
|
ASSERT (Buffer != NULL);
|
|
|
|
CopyMem (Buffer, ((UINT8 *)FileHandle) + FileOffset, *ReadSize);
|
|
return RETURN_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Unloads a loaded PE/COFF image from memory and releases its taken resource.
|
|
Releases any environment specific resources that were allocated when the image
|
|
specified by ImageContext was loaded using PeCoffLoaderLoadImage().
|
|
|
|
For NT32 emulator, the PE/COFF image loaded by system needs to release.
|
|
For real platform, the PE/COFF image loaded by Core doesn't needs to be unloaded,
|
|
this function can simply return RETURN_SUCCESS.
|
|
|
|
If ImageContext is NULL, then ASSERT().
|
|
|
|
@param ImageContext The pointer to the image context structure that describes the PE/COFF
|
|
image to be unloaded.
|
|
|
|
@retval RETURN_SUCCESS The PE/COFF image was unloaded successfully.
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
PeCoffLoaderUnloadImage (
|
|
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
|
|
)
|
|
{
|
|
//
|
|
// Applies additional environment specific actions to unload a
|
|
// PE/COFF image if needed
|
|
//
|
|
PeCoffLoaderUnloadImageExtraAction (ImageContext);
|
|
return RETURN_SUCCESS;
|
|
}
|