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614 lines
21 KiB
614 lines
21 KiB
/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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rebase.c
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Abstract:
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Source file for the REBASE utility that takes a group of image files and
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rebases them so they are packed as closely together in the virtual address
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space as possible.
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Author:
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Mark Lucovsky (markl) 30-Apr-1993
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Revision History:
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--*/
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#include <private.h>
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//
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// byte swapping macros (LE/BE) used for IA64 relocations
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// source != destination
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//
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#define SWAP_SHORT(_dst,_src) \
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((((unsigned char *)_dst)[1] = ((unsigned char *)_src)[0]), \
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(((unsigned char *)_dst)[0] = ((unsigned char *)_src)[1]))
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#define SWAP_INT(_dst,_src) \
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((((unsigned char *)_dst)[3] = ((unsigned char *)_src)[0]), \
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(((unsigned char *)_dst)[2] = ((unsigned char *)_src)[1]), \
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(((unsigned char *)_dst)[1] = ((unsigned char *)_src)[2]), \
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(((unsigned char *)_dst)[0] = ((unsigned char *)_src)[3]))
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#define SWAP_LONG_LONG(_dst,_src) \
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((((unsigned char *)_dst)[7] = ((unsigned char *)_src)[0]), \
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(((unsigned char *)_dst)[6] = ((unsigned char *)_src)[1]), \
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(((unsigned char *)_dst)[5] = ((unsigned char *)_src)[2]), \
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(((unsigned char *)_dst)[4] = ((unsigned char *)_src)[3]), \
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(((unsigned char *)_dst)[3] = ((unsigned char *)_src)[4]), \
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(((unsigned char *)_dst)[2] = ((unsigned char *)_src)[5]), \
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(((unsigned char *)_dst)[1] = ((unsigned char *)_src)[6]), \
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(((unsigned char *)_dst)[0] = ((unsigned char *)_src)[7]))
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#define REBASE_ERR 99
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#define REBASE_OK 0
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static
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PVOID
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RvaToVa(
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ULONG Rva,
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PLOADED_IMAGE Image
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);
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typedef
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PIMAGE_BASE_RELOCATION
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(WINAPI *LPRELOCATE_ROUTINE)(
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IN ULONG_PTR VA,
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IN ULONG SizeOfBlock,
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IN PUSHORT NextOffset,
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IN LONG_PTR Diff
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);
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typedef
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PIMAGE_BASE_RELOCATION
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(WINAPI *LPRELOCATE_ROUTINE64)(
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IN ULONG_PTR VA,
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IN ULONG SizeOfBlock,
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IN PUSHORT NextOffset,
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IN LONGLONG Diff
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);
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static LPRELOCATE_ROUTINE RelocRoutineNative;
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static LPRELOCATE_ROUTINE64 RelocRoutine64;
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#include <ldrreloc_rebase.c> // P/u ldrreloc from ntos\rtl
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#define x256MEG (256*(1024*1024))
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#define x256MEGSHIFT 28
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#define ROUND_UP( Size, Amount ) (((ULONG)(Size) + ((Amount) - 1)) & ~((Amount) - 1))
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VOID
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AdjImageBaseSize(
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PULONG pImageBase,
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PULONG ImageSize,
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BOOL fGoingDown
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);
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BOOL
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RelocateImage(
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PLOADED_IMAGE LoadedImage,
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ULONG64 NewBase,
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ULONG64 *Diff,
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ULONG tstamp
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);
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BOOL
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ReBaseImage(
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IN LPSTR CurrentImageName,
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IN LPSTR SymbolPath, // Symbol path (if
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IN BOOL fReBase, // TRUE if actually rebasing, false if only summing
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IN BOOL fRebaseSysfileOk, // TRUE is system images s/b rebased
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IN BOOL fGoingDown, // TRUE if the image s/b rebased below the given base
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IN ULONG CheckImageSize, // Max size allowed (0 if don't care)
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OUT ULONG *OldImageSize, // Returned from the header
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OUT ULONG_PTR *OldImageBase, // Returned from the header
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OUT ULONG *NewImageSize, // Image size rounded to next separation boundary
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IN OUT ULONG_PTR *NewImageBase, // (in) Desired new address.
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// (out) Next new address (above/below this one)
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IN ULONG tstamp // new timestamp for image
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)
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{
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ULONG64 xOldImageBase = *OldImageBase;
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ULONG64 xNewImageBase = *NewImageBase;
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BOOL rc;
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rc = ReBaseImage64(
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CurrentImageName,
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SymbolPath,
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fReBase,
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fRebaseSysfileOk,
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fGoingDown,
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CheckImageSize,
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OldImageSize,
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&xOldImageBase,
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NewImageSize,
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&xNewImageBase,
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tstamp);
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*OldImageBase = (ULONG_PTR)xOldImageBase;
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*NewImageBase = (ULONG_PTR)xNewImageBase;
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return rc;
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}
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BOOL
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ReBaseImage64(
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IN LPSTR CurrentImageName,
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IN LPSTR SymbolPath, // Symbol path (if
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IN BOOL fReBase, // TRUE if actually rebasing, false if only summing
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IN BOOL fRebaseSysfileOk, // TRUE is system images s/b rebased
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IN BOOL fGoingDown, // TRUE if the image s/b rebased below the given base
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IN ULONG CheckImageSize, // Max size allowed (0 if don't care)
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OUT ULONG *OldImageSize, // Returned from the header
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OUT ULONG64 *OldImageBase, // Returned from the header
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OUT ULONG *NewImageSize, // Image size rounded to next separation boundary
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IN OUT ULONG64 *NewImageBase, // (in) Desired new address.
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// (out) Next new address (above/below this one)
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IN ULONG tstamp // new timestamp for image
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)
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{
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BOOL fSymbolsAlreadySplit = FALSE;
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CHAR DebugFileName[ MAX_PATH+1 ];
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CHAR DebugFilePath[ MAX_PATH+1 ];
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ULONG CurrentImageSize;
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ULONG64 DesiredImageBase;
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ULONG OldChecksum;
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ULONG64 Diff = 0;
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ULONG UpdateSymbolsError = 0;
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LOADED_IMAGE CurrentImage = {0};
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BOOL rc = TRUE;
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if (fReBase && (*NewImageBase & 0x0000FFFF) != 0) {
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rc = FALSE;
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UpdateSymbolsError = ERROR_INVALID_ADDRESS;
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goto Exit;
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}
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// Map and load the current image
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if ( MapAndLoad( CurrentImageName, NULL, &CurrentImage, FALSE, fReBase ? FALSE : TRUE ) ) {
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PVOID pData;
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DWORD dwDataSize;
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pData = ImageDirectoryEntryToData(
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CurrentImage.MappedAddress,
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FALSE,
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IMAGE_DIRECTORY_ENTRY_SECURITY,
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&dwDataSize
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);
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if (pData || dwDataSize) {
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// Certificates in the image, can't rebase
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UpdateSymbolsError = ERROR_EXE_CANNOT_MODIFY_SIGNED_BINARY;
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rc = FALSE;
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goto CleanupAndExit;
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}
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pData = ImageDirectoryEntryToData(
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CurrentImage.MappedAddress,
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FALSE,
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IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR,
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&dwDataSize
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);
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if (pData || dwDataSize) {
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// COR header found - see if it's strong signed
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if (((IMAGE_COR20_HEADER *)pData)->Flags & COMIMAGE_FLAGS_STRONGNAMESIGNED)
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{
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UpdateSymbolsError = ERROR_EXE_CANNOT_MODIFY_STRONG_SIGNED_BINARY;
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rc = FALSE;
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goto CleanupAndExit;
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}
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}
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if (!(!fRebaseSysfileOk && CurrentImage.fSystemImage)) {
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fSymbolsAlreadySplit = CurrentImage.Characteristics & IMAGE_FILE_DEBUG_STRIPPED ? TRUE : FALSE;
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if ( fSymbolsAlreadySplit ) {
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// Find DebugFileName for later use.
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PIMAGE_DEBUG_DIRECTORY DebugDirectories;
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ULONG DebugDirectoriesSize;
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PIMAGE_DEBUG_MISC MiscDebug;
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strcpy( DebugFileName, CurrentImageName );
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DebugDirectories = (PIMAGE_DEBUG_DIRECTORY)ImageDirectoryEntryToData(
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CurrentImage.MappedAddress,
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FALSE,
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IMAGE_DIRECTORY_ENTRY_DEBUG,
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&DebugDirectoriesSize
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);
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if (DebugDirectoryIsUseful(DebugDirectories, DebugDirectoriesSize)) {
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while (DebugDirectoriesSize != 0) {
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if (DebugDirectories->Type == IMAGE_DEBUG_TYPE_MISC) {
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MiscDebug = (PIMAGE_DEBUG_MISC)
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((PCHAR)CurrentImage.MappedAddress +
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DebugDirectories->PointerToRawData
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);
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strcpy( DebugFileName, (PCHAR) MiscDebug->Data );
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break;
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}
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else {
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DebugDirectories += 1;
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DebugDirectoriesSize -= sizeof( *DebugDirectories );
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}
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}
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}
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}
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if (CurrentImage.FileHeader->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
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CurrentImageSize = ((PIMAGE_NT_HEADERS32)CurrentImage.FileHeader)->OptionalHeader.SizeOfImage;
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*OldImageBase = ((PIMAGE_NT_HEADERS32)CurrentImage.FileHeader)->OptionalHeader.ImageBase;
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} else {
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CurrentImageSize = ((PIMAGE_NT_HEADERS64)CurrentImage.FileHeader)->OptionalHeader.SizeOfImage;
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*OldImageBase = ((PIMAGE_NT_HEADERS64)CurrentImage.FileHeader)->OptionalHeader.ImageBase;
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}
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// Save the current settings for the caller.
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*OldImageSize = CurrentImageSize;
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*NewImageSize = ROUND_UP( CurrentImageSize, IMAGE_SEPARATION );
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if (CheckImageSize) {
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// The user asked for a max size test.
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if ( *NewImageSize > ROUND_UP(CheckImageSize, IMAGE_SEPARATION) ) {
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*NewImageBase = 0;
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rc = FALSE;
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goto CleanupAndExit;
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}
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}
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DesiredImageBase = *NewImageBase;
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// So long as we're not basing to zero or rebasing to the same address,
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// go for it.
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if (fReBase) {
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BOOL fAdjust;
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if ((CurrentImage.FileHeader->FileHeader.Machine != IMAGE_FILE_MACHINE_I386) &&
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(CurrentImage.FileHeader->FileHeader.Machine != IMAGE_FILE_MACHINE_ALPHA) &&
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(CurrentImage.FileHeader->FileHeader.Machine != IMAGE_FILE_MACHINE_ALPHA64) &&
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(CurrentImage.FileHeader->FileHeader.Machine != IMAGE_FILE_MACHINE_IA64))
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{
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fAdjust = TRUE;
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} else {
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fAdjust = FALSE;
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}
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if (fGoingDown) {
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DesiredImageBase -= *NewImageSize;
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if (fAdjust) {
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AdjImageBaseSize( (PULONG)&DesiredImageBase, &CurrentImageSize, fGoingDown );
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}
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}
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if ((DesiredImageBase) &&
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(DesiredImageBase != *OldImageBase)
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) {
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if (CurrentImage.FileHeader->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
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OldChecksum = ((PIMAGE_NT_HEADERS32)CurrentImage.FileHeader)->OptionalHeader.CheckSum;
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} else {
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OldChecksum = ((PIMAGE_NT_HEADERS64)CurrentImage.FileHeader)->OptionalHeader.CheckSum;
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}
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if ( !RelocateImage( &CurrentImage, DesiredImageBase, &Diff, tstamp ) ) {
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UpdateSymbolsError = GetLastError();
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rc = FALSE;
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goto CleanupAndExit;
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}
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if ( fSymbolsAlreadySplit && Diff ) {
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if ( UpdateDebugInfoFileEx(CurrentImageName,
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SymbolPath,
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DebugFilePath,
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(PIMAGE_NT_HEADERS32)(CurrentImage.FileHeader),
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OldChecksum )) {
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UpdateSymbolsError = GetLastError();
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} else {
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UpdateSymbolsError = 0;
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}
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}
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} else {
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//
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// Should this be -1?? shouldn't it be 0 instead? - kentf
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//
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Diff = (ULONG) -1;
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}
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if (!fGoingDown && Diff) {
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DesiredImageBase += *NewImageSize;
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if (fAdjust) {
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AdjImageBaseSize( (PULONG)&DesiredImageBase, &CurrentImageSize, fGoingDown );
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}
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}
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}
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}
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if (fReBase) {
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if (Diff) {
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*NewImageBase = DesiredImageBase;
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} else {
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UpdateSymbolsError = ERROR_INVALID_ADDRESS;
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rc = FALSE;
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goto CleanupAndExit;
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}
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}
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} else {
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if (CurrentImage.fDOSImage == TRUE) {
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UpdateSymbolsError = ERROR_BAD_EXE_FORMAT;
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} else {
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UpdateSymbolsError = GetLastError();
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}
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rc = FALSE;
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goto Exit;
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}
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CleanupAndExit:
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UnmapViewOfFile( CurrentImage.MappedAddress );
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if ( CurrentImage.hFile != INVALID_HANDLE_VALUE ) {
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CloseHandle( CurrentImage.hFile );
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}
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ZeroMemory( &CurrentImage, sizeof( CurrentImage ) );
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Exit:
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SetLastError(UpdateSymbolsError);
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return(rc);
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}
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VOID
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AdjImageBaseSize (
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PULONG pulImageBase,
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PULONG pulImageSize,
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BOOL fGoingDown
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)
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{
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DWORD Meg1, Meg2, Delta;
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//
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// ImageBase is the base for the current image. Make sure that
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// the image does not span a 256Mb boundry. This is due to an r4000
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// chip bug that has problems computing the correct address for absolute
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// jumps that occur in the last few instructions of a 256mb region
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//
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Meg1 = *pulImageBase >> x256MEGSHIFT;
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Meg2 = ( *pulImageBase + ROUND_UP( *pulImageSize, IMAGE_SEPARATION ) ) >> x256MEGSHIFT;
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if ( Meg1 != Meg2 ) {
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//
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// If we are going down, then subtract the overlap from ThisBase
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//
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if ( fGoingDown ) {
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Delta = ( *pulImageBase + ROUND_UP( *pulImageSize, IMAGE_SEPARATION ) ) -
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( Meg2 << x256MEGSHIFT );
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Delta += IMAGE_SEPARATION;
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*pulImageBase = *pulImageBase - Delta;
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*pulImageSize += Delta;
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}
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else {
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Delta = ( Meg2 << x256MEGSHIFT ) - *pulImageBase;
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*pulImageBase += Delta;
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*pulImageSize += Delta;
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}
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}
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}
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BOOL
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RelocateImage(
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PLOADED_IMAGE LoadedImage,
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ULONG64 NewBase,
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ULONG64 *Diff,
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ULONG tstamp
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)
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{
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ULONG_PTR VA;
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ULONG64 OldBase;
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ULONG SizeOfBlock;
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PUSHORT NextOffset;
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PIMAGE_NT_HEADERS NtHeaders;
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PIMAGE_BASE_RELOCATION NextBlock;
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ULONG CheckSum;
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ULONG HeaderSum;
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PIMAGE_FILE_HEADER FileHeader;
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BOOL rc = TRUE;
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ULONG TotalCountBytes = 0;
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static BOOL fInit = FALSE;
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if (!fInit) {
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RelocRoutineNative = (LPRELOCATE_ROUTINE)GetProcAddress(GetModuleHandle("ntdll"), "LdrProcessRelocationBlock");
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#ifdef _WIN64
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RelocRoutine64 = RelocRoutineNative;
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#else
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RelocRoutine64 = xxLdrProcessRelocationBlock64;
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#endif
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}
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__try {
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if (LoadedImage->FileHeader->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED) {
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// Relocations stripped. Nothing to do.
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__leave;
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}
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NtHeaders = LoadedImage->FileHeader;
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FileHeader = &NtHeaders->FileHeader;
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if (NtHeaders->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
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OldBase = ((PIMAGE_NT_HEADERS32)NtHeaders)->OptionalHeader.ImageBase;
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} else {
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OldBase = ((PIMAGE_NT_HEADERS64)NtHeaders)->OptionalHeader.ImageBase;
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}
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//
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// Locate the relocation section.
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//
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NextBlock = (PIMAGE_BASE_RELOCATION)ImageDirectoryEntryToData(
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LoadedImage->MappedAddress,
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FALSE,
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IMAGE_DIRECTORY_ENTRY_BASERELOC,
|
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&TotalCountBytes
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);
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*Diff = NewBase - OldBase;
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//
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// If the image has a relocation table, then apply the specified fixup
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// information to the image.
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//
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while (TotalCountBytes) {
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SizeOfBlock = NextBlock->SizeOfBlock;
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TotalCountBytes -= SizeOfBlock;
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SizeOfBlock -= sizeof(IMAGE_BASE_RELOCATION);
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SizeOfBlock /= sizeof(USHORT);
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NextOffset = (PUSHORT)(NextBlock + 1);
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//
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// Compute the address and value for the fixup.
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//
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if ( SizeOfBlock ) {
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VA = (ULONG_PTR)RvaToVa(NextBlock->VirtualAddress,LoadedImage);
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if ( !VA ) {
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NtHeaders->Signature = (ULONG)-1;
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rc = FALSE;
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__leave;
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}
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if (NtHeaders->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
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if ( !(NextBlock = (RelocRoutine64)(VA,SizeOfBlock,NextOffset,*Diff)) ) {
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NtHeaders->Signature = (ULONG)-1;
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rc = FALSE;
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__leave;
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}
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} else {
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if ( !(NextBlock = (RelocRoutineNative)(VA,SizeOfBlock,NextOffset,(LONG_PTR)*Diff)) ) {
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NtHeaders->Signature = (ULONG)-1;
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rc = FALSE;
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__leave;
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}
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}
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}
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else {
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NextBlock++;
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}
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}
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if (tstamp) {
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FileHeader->TimeDateStamp = tstamp;
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} else {
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FileHeader->TimeDateStamp++;
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}
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if (NtHeaders->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
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((PIMAGE_NT_HEADERS32)NtHeaders)->OptionalHeader.ImageBase = (ULONG)NewBase;
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if ( LoadedImage->hFile != INVALID_HANDLE_VALUE ) {
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|
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((PIMAGE_NT_HEADERS32)NtHeaders)->OptionalHeader.CheckSum = 0;
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|
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CheckSumMappedFile(
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(PVOID)LoadedImage->MappedAddress,
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GetFileSize(LoadedImage->hFile, NULL),
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&HeaderSum,
|
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&CheckSum
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);
|
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((PIMAGE_NT_HEADERS32)NtHeaders)->OptionalHeader.CheckSum = CheckSum;
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}
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} else {
|
|
((PIMAGE_NT_HEADERS64)NtHeaders)->OptionalHeader.ImageBase = NewBase;
|
|
if ( LoadedImage->hFile != INVALID_HANDLE_VALUE ) {
|
|
((PIMAGE_NT_HEADERS64)NtHeaders)->OptionalHeader.CheckSum = 0;
|
|
|
|
CheckSumMappedFile(
|
|
(PVOID)LoadedImage->MappedAddress,
|
|
GetFileSize(LoadedImage->hFile, NULL),
|
|
&HeaderSum,
|
|
&CheckSum
|
|
);
|
|
|
|
((PIMAGE_NT_HEADERS64)NtHeaders)->OptionalHeader.CheckSum = CheckSum;
|
|
}
|
|
}
|
|
|
|
FlushViewOfFile(LoadedImage->MappedAddress,0);
|
|
TouchFileTimes(LoadedImage->hFile,NULL);
|
|
} __except (EXCEPTION_EXECUTE_HANDLER) {
|
|
rc = FALSE;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
PVOID
|
|
RvaToVa(
|
|
ULONG Rva,
|
|
PLOADED_IMAGE Image
|
|
)
|
|
{
|
|
|
|
PIMAGE_SECTION_HEADER Section;
|
|
ULONG i;
|
|
PVOID Va;
|
|
|
|
Va = NULL;
|
|
Section = Image->LastRvaSection;
|
|
if (Rva == 0) {
|
|
// a NULL Rva will be sent if there are relocs before the first page
|
|
// (ie: we're relocating a system image)
|
|
|
|
Va = Image->MappedAddress;
|
|
|
|
} else {
|
|
if ( Rva >= Section->VirtualAddress &&
|
|
Rva < (Section->VirtualAddress + Section->SizeOfRawData) ) {
|
|
Va = (PVOID)(Rva - Section->VirtualAddress + Section->PointerToRawData + Image->MappedAddress);
|
|
} else {
|
|
for(Section = Image->Sections,i=0; i<Image->NumberOfSections; i++,Section++) {
|
|
if ( Rva >= Section->VirtualAddress &&
|
|
Rva < (Section->VirtualAddress + Section->SizeOfRawData) ) {
|
|
Va = (PVOID)(Rva - Section->VirtualAddress + Section->PointerToRawData + Image->MappedAddress);
|
|
Image->LastRvaSection = Section;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return Va;
|
|
}
|
|
|
|
#ifndef STANDALONE_REBASE
|
|
// Dummy stub so the rebase.exe that shipped with VC5/VC6 will load.
|
|
VOID
|
|
RemoveRelocations(
|
|
PCHAR ImageName
|
|
)
|
|
{
|
|
return;
|
|
}
|
|
#endif
|