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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11297 6f19259b-4bc3-4df7-8a09-765794883524
306 lines
9.8 KiB
C
306 lines
9.8 KiB
C
/*++
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Copyright (c) 2006 - 2010, 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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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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#include "PiPei.h"
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#include <Library/PeCoffGetEntryPointLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Ppi/UnixPeiLoadFile.h>
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#include <IndustryStandard/PeImage.h>
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#include <Library/DebugLib.h>
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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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PEI_UNIX_THUNK_PPI *UnixThunkPpi;
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EFI_STATUS Status;
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EFI_UNIX_THUNK_PROTOCOL *Unix;
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//
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// Locate Unix ThunkPpi for retrieving standard output handle
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//
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Status = PeiServicesLocatePpi (
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&gPeiUnixThunkPpiGuid,
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0,
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NULL,
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(VOID **) &UnixThunkPpi
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);
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ASSERT_EFI_ERROR (Status);
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Unix = (EFI_UNIX_THUNK_PROTOCOL *)UnixThunkPpi->UnixThunk ();
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return Unix->PeCoffGetEntryPoint (Pe32Data, EntryPoint);
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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 Unix package needs to load the image to memory to support source
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level debug.
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@param Pe32Data 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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ASSERT (Pe32Data != NULL);
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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 + (UINTN) ((DosHdr->e_lfanew) & 0x0ffff));
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} else {
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Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)(Pe32Data);
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}
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if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {
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return Hdr.Te->Machine;
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} else 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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/**
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Returns a pointer to the PDB file name for a PE/COFF image that has been
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loaded into system memory with the PE/COFF Loader Library functions.
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Returns the PDB file name for the PE/COFF image specified by Pe32Data. If
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the PE/COFF image specified by Pe32Data is not a valid, then NULL is
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returned. If the PE/COFF image specified by Pe32Data does not contain a
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debug directory entry, then NULL is returned. If the debug directory entry
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in the PE/COFF image specified by Pe32Data does not contain a PDB file name,
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then NULL is returned.
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If Pe32Data is NULL, then ASSERT().
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@param Pe32Data Pointer to the PE/COFF image that is loaded in system
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memory.
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@return The PDB file name for the PE/COFF image specified by Pe32Data or NULL
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if it cannot be retrieved.
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**/
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VOID *
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EFIAPI
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PeCoffLoaderGetPdbPointer (
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IN VOID *Pe32Data
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)
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{
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EFI_IMAGE_DOS_HEADER *DosHdr;
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EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;
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EFI_IMAGE_DATA_DIRECTORY *DirectoryEntry;
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EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *DebugEntry;
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UINTN DirCount;
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VOID *CodeViewEntryPointer;
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INTN TEImageAdjust;
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UINT32 NumberOfRvaAndSizes;
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UINT16 Magic;
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ASSERT (Pe32Data != NULL);
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TEImageAdjust = 0;
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DirectoryEntry = NULL;
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DebugEntry = NULL;
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NumberOfRvaAndSizes = 0;
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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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//
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// DOS image header is present, so read the PE header after the DOS image header.
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//
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Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHdr->e_lfanew) & 0x0ffff));
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} else {
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//
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// DOS image header is not present, so PE header is at the image base.
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//
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Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;
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}
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if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {
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if (Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress != 0) {
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DirectoryEntry = &Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG];
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TEImageAdjust = sizeof (EFI_TE_IMAGE_HEADER) - Hdr.Te->StrippedSize;
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DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *)((UINTN) Hdr.Te +
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Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress +
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TEImageAdjust);
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}
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} else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {
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//
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// NOTE: We use Machine field to identify PE32/PE32+, instead of Magic.
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// It is due to backward-compatibility, for some system might
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// generate PE32+ image with PE32 Magic.
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//
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switch (Hdr.Pe32->FileHeader.Machine) {
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case EFI_IMAGE_MACHINE_IA32:
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//
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// Assume PE32 image with IA32 Machine field.
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//
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Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;
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break;
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case EFI_IMAGE_MACHINE_X64:
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case EFI_IMAGE_MACHINE_IA64:
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//
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// Assume PE32+ image with X64 or IA64 Machine field
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//
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Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
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break;
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default:
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//
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// For unknow Machine field, use Magic in optional Header
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//
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Magic = Hdr.Pe32->OptionalHeader.Magic;
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}
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if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
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//
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// Use PE32 offset get Debug Directory Entry
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//
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NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;
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DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);
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DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);
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} else if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
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//
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// Use PE32+ offset get Debug Directory Entry
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//
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NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;
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DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);
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DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);
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}
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if (NumberOfRvaAndSizes <= EFI_IMAGE_DIRECTORY_ENTRY_DEBUG) {
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DirectoryEntry = NULL;
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DebugEntry = NULL;
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}
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} else {
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return NULL;
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}
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if (DebugEntry == NULL || DirectoryEntry == NULL) {
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return NULL;
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}
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for (DirCount = 0; DirCount < DirectoryEntry->Size; DirCount += sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY), DebugEntry++) {
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if (DebugEntry->Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {
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if (DebugEntry->SizeOfData > 0) {
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CodeViewEntryPointer = (VOID *) ((UINTN) DebugEntry->RVA + ((UINTN)Pe32Data) + (UINTN)TEImageAdjust);
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switch (* (UINT32 *) CodeViewEntryPointer) {
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case CODEVIEW_SIGNATURE_NB10:
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return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY));
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case CODEVIEW_SIGNATURE_RSDS:
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return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY));
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case CODEVIEW_SIGNATURE_MTOC:
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return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_MTOC_ENTRY));
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default:
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break;
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}
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}
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}
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}
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return NULL;
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}
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/**
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Returns the size of the PE/COFF headers
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Returns the size of the PE/COFF header specified by Pe32Data.
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If Pe32Data is NULL, then ASSERT().
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@param Pe32Data Pointer to the PE/COFF image that is loaded in system
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memory.
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@return Size of PE/COFF header in bytes or zero if not a valid image.
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**/
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UINT32
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EFIAPI
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PeCoffGetSizeOfHeaders (
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IN VOID *Pe32Data
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)
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{
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EFI_IMAGE_DOS_HEADER *DosHdr;
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EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;
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UINTN SizeOfHeaders;
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ASSERT (Pe32Data != NULL);
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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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//
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// DOS image header is present, so read the PE header after the DOS image header.
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//
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Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHdr->e_lfanew) & 0x0ffff));
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} else {
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//
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// DOS image header is not present, so PE header is at the image base.
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//
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Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;
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}
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if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {
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SizeOfHeaders = sizeof (EFI_TE_IMAGE_HEADER) + (UINTN)Hdr.Te->BaseOfCode - (UINTN)Hdr.Te->StrippedSize;
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} else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {
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SizeOfHeaders = Hdr.Pe32->OptionalHeader.SizeOfHeaders;
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} else {
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SizeOfHeaders = 0;
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}
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return SizeOfHeaders;
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}
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