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*** empty log message ***
svn path=/trunk/; revision=966
This commit is contained in:
Jason Filby
parent
d24a48cd94
commit
980d94c760
1 changed files with 59 additions and 54 deletions
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@ -1,4 +1,4 @@
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/* $Id: loader.c,v 1.42 2000/01/12 19:03:27 ekohl Exp $
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/* $Id: loader.c,v 1.43 2000/01/26 21:10:16 jfilby Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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@ -6,13 +6,15 @@
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* PURPOSE: Loaders for PE executables
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* PROGRAMMERS: Jean Michault
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* Rex Jolliff (rex@lvcablemodem.com)
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* Jason Filby (jasonfilby@yahoo.com)
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* UPDATE HISTORY:
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* DW 22/05/98 Created
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* RJJ 10/12/98 Completed image loader function and added hooks for MZ/PE
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* RJJ 10/12/98 Built driver loader function and added hooks for PE/COFF
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* RJJ 10/12/98 Rolled in David's code to load COFF drivers
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* JM 14/12/98 Built initial PE user module loader
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* RJJ 06/03/99 Moved user PE loader into NTDLL
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* DW 22/05/98 Created
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* RJJ 10/12/98 Completed image loader function and added hooks for MZ/PE
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* RJJ 10/12/98 Built driver loader function and added hooks for PE/COFF
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* RJJ 10/12/98 Rolled in David's code to load COFF drivers
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* JM 14/12/98 Built initial PE user module loader
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* RJJ 06/03/99 Moved user PE loader into NTDLL
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* JF 26/01/2000 Recoded some parts to retrieve export details correctly
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*/
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/* INCLUDES *****************************************************************/
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@ -174,7 +176,7 @@ static VOID LdrLoadAutoConfigDriver (LPWSTR RelativeDriverName)
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NTSTATUS Status;
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UNICODE_STRING DriverName;
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DbgPrint("Loading %S\n",RelativeDriverName);
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DbgPrint("Loading %w\n",RelativeDriverName);
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LdrGetSystemDirectory(TmpFileName, (MAX_PATH * sizeof(WCHAR)));
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wcscat(TmpFileName, L"\\drivers\\");
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@ -209,11 +211,11 @@ LdrLoadAutoConfigDrivers (VOID)
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/*
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* VideoPort driver
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*/
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// LdrLoadAutoConfigDriver( L"vidport.sys" );
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LdrLoadAutoConfigDriver( L"vidport.sys" );
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/*
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* VGA Miniport driver
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*/
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// LdrLoadAutoConfigDriver( L"vgamp.sys" );
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LdrLoadAutoConfigDriver( L"vgamp.sys" );
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}
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@ -318,6 +320,7 @@ LdrLoadModule(PUNICODE_STRING Filename)
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/* Allocate nonpageable memory for driver */
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ModuleLoadBase = ExAllocatePool(NonPagedPool,
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FileStdInfo.EndOfFile.u.LowPart);
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if (ModuleLoadBase == NULL)
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{
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DbgPrint("could not allocate memory for module");
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@ -462,6 +465,8 @@ LdrGetExportAddress(PMODULE_OBJECT ModuleObject,
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/* ---------------------------------------------- PE Module support */
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typedef char *PSTR;
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PMODULE_OBJECT
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LdrPEProcessModule(PVOID ModuleLoadBase, PUNICODE_STRING pModuleName)
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{
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@ -487,7 +492,7 @@ LdrPEProcessModule(PVOID ModuleLoadBase, PUNICODE_STRING pModuleName)
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OBJECT_ATTRIBUTES ObjectAttributes;
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UNICODE_STRING ModuleName;
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WCHAR NameBuffer[60];
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DPRINT("Processing PE Module at module base:%08lx\n", ModuleLoadBase);
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/* Get header pointers */
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@ -542,7 +547,7 @@ LdrPEProcessModule(PVOID ModuleLoadBase, PUNICODE_STRING pModuleName)
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DriverSize = PEOptionalHeader->SizeOfImage;
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DPRINT("DriverSize %x\n",DriverSize);
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/* Allocate a virtual section for the module */
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/* Allocate a virtual section for the module */
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DriverBase = MmAllocateSection(DriverSize);
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if (DriverBase == 0)
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{
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@ -553,32 +558,38 @@ LdrPEProcessModule(PVOID ModuleLoadBase, PUNICODE_STRING pModuleName)
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DPRINT1("Module is at base %x\n",DriverBase);
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/* Copy image sections into virtual section */
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// memcpy(DriverBase, ModuleLoadBase, PESectionHeaders[0].PointerToRawData);
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memcpy(DriverBase, ModuleLoadBase, PESectionHeaders[0].PointerToRawData);
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// CurrentBase = (PVOID) ((DWORD)DriverBase + PESectionHeaders[0].PointerToRawData);
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CurrentSize = 0;
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memcpy(DriverBase, ModuleLoadBase, DriverSize);
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for (Idx = 0; Idx < PEFileHeader->NumberOfSections; Idx++)
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{
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/* Copy current section into current offset of virtual section */
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// Copy current section into current offset of virtual section
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if (PESectionHeaders[Idx].Characteristics &
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(IMAGE_SECTION_CHAR_CODE | IMAGE_SECTION_CHAR_DATA))
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{
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DPRINT("PESectionHeaders[Idx].VirtualAddress + DriverBase %x\n",
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PESectionHeaders[Idx].VirtualAddress + DriverBase);
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memcpy(PESectionHeaders[Idx].VirtualAddress + DriverBase,
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(PVOID)(ModuleLoadBase + PESectionHeaders[Idx].PointerToRawData),
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PESectionHeaders[Idx].Misc.VirtualSize /*SizeOfRawData*/);
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memcpy(PESectionHeaders[Idx].VirtualAddress + DriverBase,
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(PVOID)(ModuleLoadBase + PESectionHeaders[Idx].PointerToRawData),
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PESectionHeaders[Idx].Misc.VirtualSize);
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}
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else
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{
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DPRINT("PESectionHeaders[Idx].VirtualAddress + DriverBase %x\n",
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PESectionHeaders[Idx].VirtualAddress + DriverBase);
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memset(PESectionHeaders[Idx].VirtualAddress + DriverBase,
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'\0', PESectionHeaders[Idx].Misc.VirtualSize /*SizeOfRawData*/);
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'\0', PESectionHeaders[Idx].Misc.VirtualSize);
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}
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CurrentSize += ROUND_UP(PESectionHeaders[Idx].Misc.VirtualSize /*SizeOfRawData*/,
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CurrentSize += ROUND_UP(PESectionHeaders[Idx].Misc.VirtualSize,
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PEOptionalHeader->SectionAlignment);
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// CurrentBase = (PVOID)((DWORD)CurrentBase +
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// ROUND_UP(PESectionHeaders[Idx].Misc.VirtualSize /*SizeOfRawData*/,
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// ROUND_UP(PESectionHeaders[Idx].SizeOfRawData.Misc.VirtualSize,
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// PEOptionalHeader->SectionAlignment));
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}
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@ -652,8 +663,7 @@ LdrPEProcessModule(PVOID ModuleLoadBase, PUNICODE_STRING pModuleName)
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PEOptionalHeader->DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]
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.VirtualAddress);
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/* Perform import fixups */
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if (PEOptionalHeader->DataDirectory[
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IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress)
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if (PEOptionalHeader->DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress)
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{
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PIMAGE_IMPORT_MODULE_DIRECTORY ImportModuleDirectory;
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@ -680,6 +690,7 @@ LdrPEProcessModule(PVOID ModuleLoadBase, PUNICODE_STRING pModuleName)
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ModuleName.Length = ModuleName.MaximumLength = wcslen(NameBuffer);
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ModuleName.Buffer = NameBuffer;
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DPRINT("Import module: %wZ\n", &ModuleName);
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LibraryModuleObject = LdrLoadModule(&ModuleName);
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if (LibraryModuleObject == 0)
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{
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@ -706,6 +717,8 @@ LdrPEProcessModule(PVOID ModuleLoadBase, PUNICODE_STRING pModuleName)
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if ((*FunctionNameList) & 0x80000000) // hint
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{
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pName = NULL;
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Hint = (*FunctionNameList) & 0xffff;
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}
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else // hint-name
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@ -791,18 +804,18 @@ LdrPEProcessModule(PVOID ModuleLoadBase, PUNICODE_STRING pModuleName)
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PEOptionalHeader->AddressOfEntryPoint);
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ModuleObject->Length = DriverSize;
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DPRINT("entrypoint at %x\n", ModuleObject->EntryPoint);
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ModuleObject->Image.PE.FileHeader =
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(PIMAGE_FILE_HEADER) ((unsigned int) DriverBase +
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PEDosHeader->e_lfanew + sizeof(ULONG));
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ModuleObject->Image.PE.FileHeader =
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(PIMAGE_FILE_HEADER) ((unsigned int) DriverBase + PEDosHeader->e_lfanew + sizeof(ULONG));
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DPRINT("FileHeader at %x\n", ModuleObject->Image.PE.FileHeader);
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ModuleObject->Image.PE.OptionalHeader =
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(PIMAGE_OPTIONAL_HEADER) ((unsigned int) DriverBase +
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PEDosHeader->e_lfanew + sizeof(ULONG) + sizeof(IMAGE_FILE_HEADER));
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(PIMAGE_OPTIONAL_HEADER) ((unsigned int) DriverBase + PEDosHeader->e_lfanew + sizeof(ULONG) +
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sizeof(IMAGE_FILE_HEADER));
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DPRINT("OptionalHeader at %x\n", ModuleObject->Image.PE.OptionalHeader);
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ModuleObject->Image.PE.SectionList =
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(PIMAGE_SECTION_HEADER) ((unsigned int) DriverBase +
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PEDosHeader->e_lfanew + sizeof(ULONG) + sizeof(IMAGE_FILE_HEADER) +
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sizeof(IMAGE_OPTIONAL_HEADER));
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(PIMAGE_SECTION_HEADER) ((unsigned int) DriverBase + PEDosHeader->e_lfanew + sizeof(ULONG) +
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sizeof(IMAGE_FILE_HEADER) + sizeof(IMAGE_OPTIONAL_HEADER));
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DPRINT("SectionList at %x\n", ModuleObject->Image.PE.SectionList);
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return ModuleObject;
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@ -814,7 +827,7 @@ LdrPEGetExportAddress(PMODULE_OBJECT ModuleObject,
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unsigned short Hint)
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{
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WORD Idx;
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DWORD ExportsStartRVA, ExportsEndRVA, Delta;
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DWORD ExportsStartRVA, ExportsEndRVA;
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PVOID ExportAddress;
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PWORD OrdinalList;
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PDWORD FunctionList, NameList;
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@ -826,35 +839,26 @@ LdrPEGetExportAddress(PMODULE_OBJECT ModuleObject,
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ExportsEndRVA = ExportsStartRVA +
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ModuleObject->Image.PE.OptionalHeader->DataDirectory
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[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
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/* Get the IMAGE_SECTION_HEADER that contains the exports. This is
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usually the .edata section, but doesn't have to be. */
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SectionHeader = LdrPEGetEnclosingSectionHeader(ExportsStartRVA, ModuleObject);
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DPRINT("Base:%08lx ExportsStartRVA:%08lx End:%08lx SectionHeader:%08lx\n",
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ModuleObject->Base, ExportsStartRVA, ExportsEndRVA, SectionHeader);
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if (!SectionHeader)
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{
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return 0;
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}
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Delta = (DWORD)(SectionHeader->VirtualAddress -
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SectionHeader->PointerToRawData);
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ExportDirectory = MakePtr(PIMAGE_EXPORT_DIRECTORY,
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ExportDirectory = MakePtr(PIMAGE_EXPORT_DIRECTORY,
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ModuleObject->Base,
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ExportsStartRVA - Delta);
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DPRINT("Export Dir:%08lx\n", ExportDirectory);
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FunctionList = (PDWORD)((DWORD)ExportDirectory->AddressOfFunctions -
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Delta + ModuleObject->Base);
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NameList = (PDWORD)((DWORD)ExportDirectory->AddressOfNames -
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Delta + ModuleObject->Base);
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OrdinalList = (PWORD)((DWORD)ExportDirectory->AddressOfNameOrdinals -
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Delta + ModuleObject->Base);
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DPRINT("Delta:%08x\n", Delta);
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DPRINT("Func:%08x RVA:%08x Name:%08x RVA:%08x\nOrd:%08x RVA:%08x ",
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FunctionList, ExportDirectory->AddressOfFunctions,
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NameList, ExportDirectory->AddressOfNames,
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OrdinalList, ExportDirectory->AddressOfNameOrdinals);
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DPRINT("NumNames:%d NumFuncs:%d\n", ExportDirectory->NumberOfNames,
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ExportDirectory->NumberOfFunctions);
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SectionHeader->VirtualAddress);
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FunctionList = (PDWORD)((DWORD)ExportDirectory->AddressOfFunctions + ModuleObject->Base);
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NameList = (PDWORD)((DWORD)ExportDirectory->AddressOfNames + ModuleObject->Base);
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OrdinalList = (PWORD)((DWORD)ExportDirectory->AddressOfNameOrdinals + ModuleObject->Base);
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ExportAddress = 0;
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if (Name != NULL)
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{
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for (Idx = 0; Idx < ExportDirectory->NumberOfNames; Idx++)
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@ -864,6 +868,7 @@ LdrPEGetExportAddress(PMODULE_OBJECT ModuleObject,
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Name,
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Idx,
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(DWORD) ModuleObject->Base + NameList[Idx]);
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#endif
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if (!strcmp(Name, (PCHAR) ((DWORD)ModuleObject->Base + NameList[Idx])))
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{
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@ -881,8 +886,10 @@ LdrPEGetExportAddress(PMODULE_OBJECT ModuleObject,
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if (ExportAddress == 0)
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{
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DbgPrint("Export not found for %d:%s\n", Hint, Name != NULL ? Name : "(Ordinal)");
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for(;;) ;
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}
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return ExportAddress;
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}
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@ -892,7 +899,7 @@ LdrPEGetEnclosingSectionHeader(DWORD RVA,
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{
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PIMAGE_SECTION_HEADER SectionHeader = SECHDROFFSET(ModuleObject->Base);
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unsigned i;
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for (i = 0; i < ModuleObject->Image.PE.FileHeader->NumberOfSections;
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i++, SectionHeader++)
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{
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@ -906,5 +913,3 @@ LdrPEGetEnclosingSectionHeader(DWORD RVA,
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return 0;
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}
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