mirror of https://github.com/acidanthera/audk.git
114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
/*++
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Copyright (c) 2006 - 2007, Intel Corporation
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All rights reserved. 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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Module Name:
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PeCoffGetEntryPoint.c
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Abstract:
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Tiano PE/COFF loader
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Revision History
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--*/
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RETURN_STATUS
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EFIAPI
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PeCoffLoaderGetEntryPoint (
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IN VOID *Pe32Data,
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IN OUT VOID **EntryPoint
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)
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/*++
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Routine Description:
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Loads a PE/COFF image into memory, this is not follow the original purpose of
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PeCoffGetEntryPoint library class. But it's ok that Unix package not run on a real
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platform and this is for source level debug.
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Arguments:
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Pe32Data - Pointer to a PE/COFF Image
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EntryPoint - Pointer to the entry point of the PE/COFF image
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Returns:
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EFI_SUCCESS if the EntryPoint was returned
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EFI_INVALID_PARAMETER if the EntryPoint could not be found from Pe32Data
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--*/
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{
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EFI_STATUS Status;
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EFI_PEI_PPI_DESCRIPTOR *PpiDescriptor;
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NT_PEI_LOAD_FILE_PPI *PeiNtService;
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EFI_PHYSICAL_ADDRESS ImageAddress;
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UINT64 ImageSize;
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EFI_PHYSICAL_ADDRESS ImageEntryPoint;
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Status = PeiServicesLocatePpi (
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&gNtPeiLoadFilePpiGuid,
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0,
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&PpiDescriptor,
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&PeiNtService
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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Status = PeiNtService->PeiLoadFileService (
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Pe32Data,
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&ImageAddress,
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&ImageSize,
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&ImageEntryPoint
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);
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*EntryPoint = (VOID*)(UINTN)ImageEntryPoint;
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return Status;
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}
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/**
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Returns the machine type of PE/COFF image.
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This is copied from MDE BasePeCoffGetEntryPointLib, the code should be sync with it.
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The reason is NT32 package needs to load the image to memory to support source
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level debug.
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@param Image Pointer to a PE/COFF header
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@return Machine type or zero if not a valid iamge
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**/
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UINT16
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EFIAPI
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PeCoffLoaderGetMachineType (
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IN VOID *Pe32Data
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)
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{
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EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;
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EFI_IMAGE_DOS_HEADER *DosHdr;
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DosHdr = (EFI_IMAGE_DOS_HEADER *)Pe32Data;
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if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
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Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)Pe32Data + DosHdr->e_lfanew);
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} else {
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Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)Pe32Data);
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}
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if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {
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return Hdr.Pe32->FileHeader.Machine;
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}
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return 0x0000;
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}
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