--- /dev/null
+/*++\r
+\r
+Copyright (c) 2006 - 2008, Intel Corporation\r
+All rights reserved. This program and the accompanying materials\r
+are licensed and made available under the terms and conditions of the BSD License\r
+which accompanies this distribution. The full text of the license may be found at\r
+http://opensource.org/licenses/bsd-license.php\r
+\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+Module Name:\r
+\r
+ PeCoffGetEntryPoint.c\r
+\r
+Abstract:\r
+\r
+ Tiano PE/COFF loader\r
+\r
+Revision History\r
+\r
+--*/\r
+#include "PiPei.h"\r
+#include <Library/PeCoffGetEntryPointLib.h>\r
+#include <Library/PeiServicesLib.h>\r
+#include <Ppi/UnixPeiLoadFile.h>\r
+#include <IndustryStandard/PeImage.h>\r
+#include <Library/DebugLib.h>\r
+\r
+RETURN_STATUS\r
+EFIAPI\r
+PeCoffLoaderGetEntryPoint (\r
+ IN VOID *Pe32Data,\r
+ IN OUT VOID **EntryPoint\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Loads a PE/COFF image into memory, this is not follow the original purpose of \r
+ PeCoffGetEntryPoint library class. But it's ok that Unix package not run on a real \r
+ platform and this is for source level debug.\r
+\r
+Arguments:\r
+\r
+ Pe32Data - Pointer to a PE/COFF Image\r
+\r
+ EntryPoint - Pointer to the entry point of the PE/COFF image\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS if the EntryPoint was returned\r
+ EFI_INVALID_PARAMETER if the EntryPoint could not be found from Pe32Data\r
+\r
+--*/\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_PEI_PPI_DESCRIPTOR *PpiDescriptor;\r
+ UNIX_PEI_LOAD_FILE_PPI *PeiUnixService;\r
+ EFI_PHYSICAL_ADDRESS ImageAddress;\r
+ UINT64 ImageSize;\r
+ EFI_PHYSICAL_ADDRESS ImageEntryPoint;\r
+\r
+ ASSERT (Pe32Data != NULL);\r
+ ASSERT (EntryPoint != NULL);\r
+\r
+ Status = PeiServicesLocatePpi (\r
+ &gUnixPeiLoadFilePpiGuid,\r
+ 0,\r
+ &PpiDescriptor,\r
+ (void **)&PeiUnixService\r
+ );\r
+\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ Status = PeiUnixService->PeiLoadFileService (\r
+ Pe32Data,\r
+ &ImageAddress,\r
+ &ImageSize,\r
+ &ImageEntryPoint\r
+ );\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+\r
+ *EntryPoint = (VOID*)(UINTN)ImageEntryPoint;\r
+ return Status;\r
+}\r
+\r
+/**\r
+ Returns the machine type of PE/COFF image. \r
+ This is copied from MDE BasePeCoffGetEntryPointLib, the code should be sync with it.\r
+ The reason is Unix package needs to load the image to memory to support source\r
+ level debug.\r
+ \r
+\r
+ @param Pe32Data Pointer to a PE/COFF header\r
+\r
+ @return Machine type or zero if not a valid iamge\r
+\r
+**/\r
+UINT16\r
+EFIAPI\r
+PeCoffLoaderGetMachineType (\r
+ IN VOID *Pe32Data\r
+ )\r
+{ \r
+ EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\r
+ EFI_IMAGE_DOS_HEADER *DosHdr;\r
+\r
+ ASSERT (Pe32Data != NULL);\r
+\r
+ DosHdr = (EFI_IMAGE_DOS_HEADER *)Pe32Data;\r
+ if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHdr->e_lfanew) & 0x0ffff));\r
+\r
+ } else {\r
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)(Pe32Data);\r
+ }\r
+\r
+ if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {\r
+ return Hdr.Te->Machine;\r
+ } else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {\r
+ return Hdr.Pe32->FileHeader.Machine;\r
+ }\r
+\r
+ return 0x0000;\r
+}\r
+\r
+/**\r
+ Returns a pointer to the PDB file name for a PE/COFF image that has been\r
+ loaded into system memory with the PE/COFF Loader Library functions.\r
+\r
+ Returns the PDB file name for the PE/COFF image specified by Pe32Data. If\r
+ the PE/COFF image specified by Pe32Data is not a valid, then NULL is\r
+ returned. If the PE/COFF image specified by Pe32Data does not contain a\r
+ debug directory entry, then NULL is returned. If the debug directory entry\r
+ in the PE/COFF image specified by Pe32Data does not contain a PDB file name,\r
+ then NULL is returned.\r
+ If Pe32Data is NULL, then ASSERT().\r
+\r
+ @param Pe32Data Pointer to the PE/COFF image that is loaded in system\r
+ memory.\r
+\r
+ @return The PDB file name for the PE/COFF image specified by Pe32Data or NULL\r
+ if it cannot be retrieved.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+PeCoffLoaderGetPdbPointer (\r
+ IN VOID *Pe32Data\r
+ )\r
+{\r
+ EFI_IMAGE_DOS_HEADER *DosHdr;\r
+ EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\r
+ EFI_IMAGE_DATA_DIRECTORY *DirectoryEntry;\r
+ EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *DebugEntry;\r
+ UINTN DirCount;\r
+ VOID *CodeViewEntryPointer;\r
+ INTN TEImageAdjust;\r
+ UINT32 NumberOfRvaAndSizes;\r
+ UINT16 Magic;\r
+\r
+ ASSERT (Pe32Data != NULL);\r
+\r
+ TEImageAdjust = 0;\r
+ DirectoryEntry = NULL;\r
+ DebugEntry = NULL;\r
+ NumberOfRvaAndSizes = 0;\r
+\r
+ DosHdr = (EFI_IMAGE_DOS_HEADER *)Pe32Data;\r
+ if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r
+ //\r
+ // DOS image header is present, so read the PE header after the DOS image header.\r
+ //\r
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHdr->e_lfanew) & 0x0ffff));\r
+ } else {\r
+ //\r
+ // DOS image header is not present, so PE header is at the image base.\r
+ //\r
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;\r
+ }\r
+\r
+ if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {\r
+ if (Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress != 0) {\r
+ DirectoryEntry = &Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG];\r
+ TEImageAdjust = sizeof (EFI_TE_IMAGE_HEADER) - Hdr.Te->StrippedSize;\r
+ DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *)((UINTN) Hdr.Te +\r
+ Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress +\r
+ TEImageAdjust);\r
+ }\r
+ } else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {\r
+ //\r
+ // NOTE: We use Machine field to identify PE32/PE32+, instead of Magic.\r
+ // It is due to backward-compatibility, for some system might\r
+ // generate PE32+ image with PE32 Magic.\r
+ //\r
+ switch (Hdr.Pe32->FileHeader.Machine) {\r
+ case EFI_IMAGE_MACHINE_IA32:\r
+ //\r
+ // Assume PE32 image with IA32 Machine field.\r
+ //\r
+ Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;\r
+ break;\r
+ case EFI_IMAGE_MACHINE_X64:\r
+ case EFI_IMAGE_MACHINE_IPF:\r
+ //\r
+ // Assume PE32+ image with X64 or IPF Machine field\r
+ //\r
+ Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;\r
+ break;\r
+ default:\r
+ //\r
+ // For unknow Machine field, use Magic in optional Header\r
+ //\r
+ Magic = Hdr.Pe32->OptionalHeader.Magic;\r
+ }\r
+\r
+ if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {\r
+ //\r
+ // Use PE32 offset get Debug Directory Entry\r
+ //\r
+ NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;\r
+ DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);\r
+ DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);\r
+ } else if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC) {\r
+ //\r
+ // Use PE32+ offset get Debug Directory Entry\r
+ //\r
+ NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;\r
+ DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);\r
+ DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);\r
+ }\r
+\r
+ if (NumberOfRvaAndSizes <= EFI_IMAGE_DIRECTORY_ENTRY_DEBUG) {\r
+ DirectoryEntry = NULL;\r
+ DebugEntry = NULL;\r
+ }\r
+ } else {\r
+ return NULL;\r
+ }\r
+\r
+ if (DebugEntry == NULL || DirectoryEntry == NULL) {\r
+ return NULL;\r
+ }\r
+\r
+ for (DirCount = 0; DirCount < DirectoryEntry->Size; DirCount += sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY), DebugEntry++) {\r
+ if (DebugEntry->Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {\r
+ if (DebugEntry->SizeOfData > 0) {\r
+ CodeViewEntryPointer = (VOID *) ((UINTN) DebugEntry->RVA + ((UINTN)Pe32Data) + (UINTN)TEImageAdjust);\r
+ switch (* (UINT32 *) CodeViewEntryPointer) {\r
+ case CODEVIEW_SIGNATURE_NB10:\r
+ return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY));\r
+ case CODEVIEW_SIGNATURE_RSDS:\r
+ return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY));\r
+ default:\r
+ break;\r
+ }\r
+ }\r
+ }\r
+ }\r
+\r
+ return NULL;\r
+}\r
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