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Diffstat (limited to 'EDK/Foundation/Library/EdkIIGlueLib/Library/BasePeCoffGetEntryPointLib/PeCoffGetEntryPoint.c')
-rw-r--r--EDK/Foundation/Library/EdkIIGlueLib/Library/BasePeCoffGetEntryPointLib/PeCoffGetEntryPoint.c222
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diff --git a/EDK/Foundation/Library/EdkIIGlueLib/Library/BasePeCoffGetEntryPointLib/PeCoffGetEntryPoint.c b/EDK/Foundation/Library/EdkIIGlueLib/Library/BasePeCoffGetEntryPointLib/PeCoffGetEntryPoint.c
new file mode 100644
index 0000000..208d662
--- /dev/null
+++ b/EDK/Foundation/Library/EdkIIGlueLib/Library/BasePeCoffGetEntryPointLib/PeCoffGetEntryPoint.c
@@ -0,0 +1,222 @@
+/*++
+
+Copyright (c) 2004 - 2006, Intel Corporation
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+
+Module Name:
+
+ PeCoffGetEntryPoint.c
+
+Abstract:
+
+ Pe/Coff loader
+
+--*/
+
+#include "EdkIIGlueBase.h"
+
+/**
+ Retrieves and returns a pointer to the entry point to a PE/COFF image that has been loaded
+ into system memory with the PE/COFF Loader Library functions.
+
+ Retrieves the entry point to the PE/COFF image specified by Pe32Data and returns this entry
+ point in EntryPoint. If the entry point could not be retrieved from the PE/COFF image, then
+ return RETURN_INVALID_PARAMETER. Otherwise return RETURN_SUCCESS.
+ If Pe32Data is NULL, then ASSERT().
+ If EntryPoint is NULL, then ASSERT().
+
+ @param Pe32Data Pointer to the PE/COFF image that is loaded in system memory.
+ @param EntryPoint Pointer to entry point to the PE/COFF image to return.
+
+ @retval RETURN_SUCCESS EntryPoint was returned.
+ @retval RETURN_INVALID_PARAMETER The entry point could not be found in the PE/COFF image.
+
+**/
+RETURN_STATUS
+EFIAPI
+PeCoffLoaderGetEntryPoint (
+ IN VOID *Pe32Data,
+ OUT VOID **EntryPoint
+ )
+{
+ EFI_IMAGE_DOS_HEADER *DosHeader;
+ EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Header;
+
+ ASSERT (Pe32Data != NULL);
+ ASSERT (EntryPoint != NULL);
+
+ DosHeader = (EFI_IMAGE_DOS_HEADER *)Pe32Data;
+ if (DosHeader->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
+ //
+ // DOS image header is present, so read the PE header after the DOS image header.
+ //
+ Header.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHeader->e_lfanew) & 0x0ffff));
+ } else {
+ //
+ // DOS image header is not present, so PE header is at the image base.
+ //
+ Header.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;
+ }
+
+ //
+ // Calculate the entry point relative to the start of the image.
+ // AddressOfEntryPoint is common for PE32 & PE32+
+ //
+ *EntryPoint = (VOID *)((UINTN)Pe32Data + (UINTN)(Header.Pe32->OptionalHeader.AddressOfEntryPoint & 0x0ffffffff));
+ return RETURN_SUCCESS;
+}
+
+
+/**
+ Returns the machine type of a PE/COFF image.
+
+ Returns the machine type from the PE/COFF image specified by Pe32Data.
+ If Pe32Data is NULL, then ASSERT().
+
+ @param Pe32Data Pointer to the PE/COFF image that is loaded in system
+ memory.
+
+ @return Machine type or zero if not a valid iamge.
+
+**/
+UINT16
+EFIAPI
+PeCoffLoaderGetMachineType (
+ IN VOID *Pe32Data
+ )
+{
+ EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;
+ EFI_IMAGE_DOS_HEADER *DosHdr;
+
+ DosHdr = (EFI_IMAGE_DOS_HEADER *)Pe32Data;
+ if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)Pe32Data + DosHdr->e_lfanew);
+ } else {
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)Pe32Data);
+ }
+
+ if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {
+ return Hdr.Pe32->FileHeader.Machine;
+ }
+
+ return 0x0000;
+}
+
+/**
+ Returns a pointer to the PDB file name for a PE/COFF image that has been
+ loaded into system memory with the PE/COFF Loader Library functions.
+
+ Returns the PDB file name for the PE/COFF image specified by Pe32Data. If
+ the PE/COFF image specified by Pe32Data is not a valid, then NULL is
+ returned. If the PE/COFF image specified by Pe32Data does not contain a
+ debug directory entry, then NULL is returned. If the debug directory entry
+ in the PE/COFF image specified by Pe32Data does not contain a PDB file name,
+ then NULL is returned.
+ If Pe32Data is NULL, then ASSERT().
+
+ @param Pe32Data Pointer to the PE/COFF image that is loaded in system
+ memory.
+
+ @return The PDB file name for the PE/COFF image specified by Pe32Data or NULL
+ if it cannot be retrieved.
+
+**/
+VOID *
+EFIAPI
+PeCoffLoaderGetPdbPointer (
+ IN VOID *Pe32Data
+ )
+{
+ EFI_IMAGE_DOS_HEADER *DosHeader;
+ EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;
+ EFI_IMAGE_DATA_DIRECTORY *DirectoryEntry;
+ EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *DebugEntry;
+ UINTN DirCount;
+ VOID *CodeViewEntryPointer;
+ INTN TEImageAdjust;
+ UINT32 NumberOfRvaAndSizes;
+
+ ASSERT (Pe32Data != NULL);
+
+ TEImageAdjust = 0;
+ DirectoryEntry = NULL;
+ DebugEntry = NULL;
+ NumberOfRvaAndSizes = 0;
+
+ DosHeader = (EFI_IMAGE_DOS_HEADER *)Pe32Data;
+ if (DosHeader->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
+ //
+ // DOS image header is present, so read the PE header after the DOS image header.
+ //
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHeader->e_lfanew) & 0x0ffff));
+ } else {
+ //
+ // DOS image header is not present, so PE header is at the image base.
+ //
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;
+ }
+
+ if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {
+ if (Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress != 0) {
+ DirectoryEntry = &Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG];
+ TEImageAdjust = sizeof (EFI_TE_IMAGE_HEADER) - Hdr.Te->StrippedSize;
+ DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *)((UINTN) Hdr.Te +
+ Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress +
+ TEImageAdjust);
+ }
+ } else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {
+ if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
+ //
+ // Use PE32 offset get Debug Directory Entry
+ //
+ NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;
+ DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);
+ DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);
+ } else if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
+ //
+ // Use PE32+ offset get Debug Directory Entry
+ //
+ NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;
+ DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);
+ DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);
+ }
+
+ if (NumberOfRvaAndSizes <= EFI_IMAGE_DIRECTORY_ENTRY_DEBUG) {
+ DirectoryEntry = NULL;
+ DebugEntry = NULL;
+ }
+ } else {
+ return NULL;
+ }
+
+ if (DebugEntry == NULL || DirectoryEntry == NULL) {
+ return NULL;
+ }
+
+ for (DirCount = 0; DirCount < DirectoryEntry->Size; DirCount++, DebugEntry++) {
+ if (DebugEntry->Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {
+ if (DebugEntry->SizeOfData > 0) {
+ CodeViewEntryPointer = (VOID *) ((UINTN) DebugEntry->RVA + ((UINTN)Pe32Data) + (UINTN)TEImageAdjust);
+ switch (* (UINT32 *) CodeViewEntryPointer) {
+ case CODEVIEW_SIGNATURE_NB10:
+ return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY));
+ case CODEVIEW_SIGNATURE_RSDS:
+ return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY));
+ default:
+ break;
+ }
+ }
+ }
+ }
+
+ return NULL;
+}
+
+
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