4 This PE/COFF loader supports loading any PE32 or PE32+ image type, but
5 only supports relocating IA32, X64, IPF, and EBC images.
7 Copyright (c) 2006, Intel Corporation
8 All rights reserved. This program and the accompanying materials
9 are licensed and made available under the terms and conditions of the BSD License
10 which accompanies this distribution. The full text of the license may be found at
11 http://opensource.org/licenses/bsd-license.php
13 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
14 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
16 Module Name: PeCoffLoader.c
22 Performs an Itanium-based specific relocation fixup and is a no-op on other
25 @param Reloc Pointer to the relocation record.
26 @param Fixup Pointer to the address to fix up.
27 @param FixupData Pointer to a buffer to log the fixups.
28 @param Adjust The offset to adjust the fixup.
34 PeCoffLoaderRelocateImageEx (
37 IN OUT CHAR8
**FixupData
,
43 Performs an Itanium-based specific re-relocation fixup and is a no-op on other
44 instruction sets. This is used to re-relocated the image into the EFI virtual
45 space for runtime calls.
47 @param Reloc Pointer to the relocation record.
48 @param Fixup Pointer to the address to fix up.
49 @param FixupData Pointer to a buffer to log the fixups.
50 @param Adjust The offset to adjust the fixup.
56 PeHotRelocateImageEx (
59 IN OUT CHAR8
**FixupData
,
65 Returns TRUE if the machine type of PE/COFF image is supported. Supported
66 does not mean the image can be executed it means the PE/COFF loader supports
67 loading and relocating of the image type. It's up to the caller to support
70 @param Machine Machine type from the PE Header.
72 @return TRUE if this PE/COFF loader can load the image
76 PeCoffLoaderImageFormatSupported (
82 Retrieves the magic value from the PE/COFF header.
84 @param Hdr The buffer in which to return the PE32, PE32+, or TE header.
86 @return EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC - Image is PE32
87 @return EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC - Image is PE32+
91 PeCoffLoaderGetPeHeaderMagicValue (
92 IN EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
96 // NOTE: Some versions of Linux ELILO for Itanium have an incorrect magic value
97 // in the PE/COFF Header. If the MachineType is Itanium(IA64) and the
98 // Magic value in the OptionalHeader is EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
99 // then override the returned value to EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC
101 if (Hdr
.Pe32
->FileHeader
.Machine
== EFI_IMAGE_MACHINE_IA64
&& Hdr
.Pe32
->OptionalHeader
.Magic
== EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
) {
102 return EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC
;
105 // Return the magic value from the PC/COFF Optional Header
107 return Hdr
.Pe32
->OptionalHeader
.Magic
;
112 Retrieves the PE or TE Header from a PE/COFF or TE image.
114 @param ImageContext The context of the image being loaded.
115 @param Hdr The buffer in which to return the PE32, PE32+, or TE header.
117 @retval RETURN_SUCCESS The PE or TE Header is read.
118 @retval Other The error status from reading the PE/COFF or TE image using the ImageRead function.
122 PeCoffLoaderGetPeHeader (
123 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT
*ImageContext
,
124 OUT EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
127 RETURN_STATUS Status
;
128 EFI_IMAGE_DOS_HEADER DosHdr
;
133 // Read the DOS image header to check for it's existance
135 Size
= sizeof (EFI_IMAGE_DOS_HEADER
);
136 Status
= ImageContext
->ImageRead (
137 ImageContext
->Handle
,
142 if (RETURN_ERROR (Status
)) {
143 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
147 ImageContext
->PeCoffHeaderOffset
= 0;
148 if (DosHdr
.e_magic
== EFI_IMAGE_DOS_SIGNATURE
) {
150 // DOS image header is present, so read the PE header after the DOS image
153 ImageContext
->PeCoffHeaderOffset
= DosHdr
.e_lfanew
;
157 // Read the PE/COFF Header. For PE32 (32-bit) this will read in too much
158 // data, but that should not hurt anythine. Hdr.Pe32->OptionalHeader.Magic
159 // determins if this is a PE32 or PE32+ image. The magic is in the same
160 // location in both images.
162 Size
= sizeof (EFI_IMAGE_OPTIONAL_HEADER_UNION
);
163 Status
= ImageContext
->ImageRead (
164 ImageContext
->Handle
,
165 ImageContext
->PeCoffHeaderOffset
,
169 if (RETURN_ERROR (Status
)) {
170 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
175 // Use Signature to figure out if we understand the image format
177 if (Hdr
.Te
->Signature
== EFI_TE_IMAGE_HEADER_SIGNATURE
) {
178 ImageContext
->IsTeImage
= TRUE
;
179 ImageContext
->Machine
= Hdr
.Te
->Machine
;
180 ImageContext
->ImageType
= (UINT16
)(Hdr
.Te
->Subsystem
);
181 ImageContext
->ImageSize
= 0;
182 ImageContext
->SectionAlignment
= 4096;
183 ImageContext
->SizeOfHeaders
= sizeof (EFI_TE_IMAGE_HEADER
) + (UINTN
)Hdr
.Te
->BaseOfCode
- (UINTN
)Hdr
.Te
->StrippedSize
;
185 } else if (Hdr
.Pe32
->Signature
== EFI_IMAGE_NT_SIGNATURE
) {
186 ImageContext
->IsTeImage
= FALSE
;
187 ImageContext
->Machine
= Hdr
.Pe32
->FileHeader
.Machine
;
189 Magic
= PeCoffLoaderGetPeHeaderMagicValue (Hdr
);
191 if (Magic
== EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
) {
195 ImageContext
->ImageType
= Hdr
.Pe32
->OptionalHeader
.Subsystem
;
196 ImageContext
->ImageSize
= (UINT64
)Hdr
.Pe32
->OptionalHeader
.SizeOfImage
;
197 ImageContext
->SectionAlignment
= Hdr
.Pe32
->OptionalHeader
.SectionAlignment
;
198 ImageContext
->SizeOfHeaders
= Hdr
.Pe32
->OptionalHeader
.SizeOfHeaders
;
200 } else if (Magic
== EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC
) {
204 ImageContext
->ImageType
= Hdr
.Pe32Plus
->OptionalHeader
.Subsystem
;
205 ImageContext
->ImageSize
= (UINT64
) Hdr
.Pe32Plus
->OptionalHeader
.SizeOfImage
;
206 ImageContext
->SectionAlignment
= Hdr
.Pe32Plus
->OptionalHeader
.SectionAlignment
;
207 ImageContext
->SizeOfHeaders
= Hdr
.Pe32Plus
->OptionalHeader
.SizeOfHeaders
;
209 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_MACHINE_TYPE
;
210 return RETURN_UNSUPPORTED
;
213 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_MACHINE_TYPE
;
214 return RETURN_UNSUPPORTED
;
217 if (!PeCoffLoaderImageFormatSupported (ImageContext
->Machine
)) {
219 // If the PE/COFF loader does not support the image type return
220 // unsupported. This library can suport lots of types of images
221 // this does not mean the user of this library can call the entry
222 // point of the image.
224 return RETURN_UNSUPPORTED
;
227 return RETURN_SUCCESS
;
232 Retrieves information about a PE/COFF image.
234 Computes the PeCoffHeaderOffset, ImageAddress, ImageSize, DestinationAddress, CodeView,
235 PdbPointer, RelocationsStripped, SectionAlignment, SizeOfHeaders, and DebugDirectoryEntryRva
236 fields of the ImageContext structure. If ImageContext is NULL, then return RETURN_INVALID_PARAMETER.
237 If the PE/COFF image accessed through the ImageRead service in the ImageContext structure is not
238 a supported PE/COFF image type, then return RETURN_UNSUPPORTED. If any errors occur while
239 computing the fields of ImageContext, then the error status is returned in the ImageError field of
242 @param ImageContext Pointer to the image context structure that describes the PE/COFF
243 image that needs to be examined by this function.
245 @retval RETURN_SUCCESS The information on the PE/COFF image was collected.
246 @retval RETURN_INVALID_PARAMETER ImageContext is NULL.
247 @retval RETURN_UNSUPPORTED The PE/COFF image is not supported.
252 PeCoffLoaderGetImageInfo (
253 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT
*ImageContext
256 RETURN_STATUS Status
;
257 EFI_IMAGE_OPTIONAL_HEADER_UNION HdrData
;
258 EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
;
259 EFI_IMAGE_DATA_DIRECTORY
*DebugDirectoryEntry
;
262 UINTN DebugDirectoryEntryRva
;
263 UINTN DebugDirectoryEntryFileOffset
;
264 UINTN SectionHeaderOffset
;
265 EFI_IMAGE_SECTION_HEADER SectionHeader
;
266 EFI_IMAGE_DEBUG_DIRECTORY_ENTRY DebugEntry
;
267 UINT32 NumberOfRvaAndSizes
;
270 if (NULL
== ImageContext
) {
271 return RETURN_INVALID_PARAMETER
;
276 ImageContext
->ImageError
= IMAGE_ERROR_SUCCESS
;
278 Hdr
.Union
= &HdrData
;
279 Status
= PeCoffLoaderGetPeHeader (ImageContext
, Hdr
);
280 if (RETURN_ERROR (Status
)) {
284 Magic
= PeCoffLoaderGetPeHeaderMagicValue (Hdr
);
287 // Retrieve the base address of the image
289 if (!(ImageContext
->IsTeImage
)) {
290 if (Magic
== EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
) {
294 ImageContext
->ImageAddress
= Hdr
.Pe32
->OptionalHeader
.ImageBase
;
299 ImageContext
->ImageAddress
= Hdr
.Pe32Plus
->OptionalHeader
.ImageBase
;
302 ImageContext
->ImageAddress
= (PHYSICAL_ADDRESS
)(Hdr
.Te
->ImageBase
);
306 // Initialize the alternate destination address to 0 indicating that it
307 // should not be used.
309 ImageContext
->DestinationAddress
= 0;
312 // Initialize the codeview pointer.
314 ImageContext
->CodeView
= NULL
;
315 ImageContext
->PdbPointer
= NULL
;
318 // Three cases with regards to relocations:
319 // - Image has base relocs, RELOCS_STRIPPED==0 => image is relocatable
320 // - Image has no base relocs, RELOCS_STRIPPED==1 => Image is not relocatable
321 // - Image has no base relocs, RELOCS_STRIPPED==0 => Image is relocatable but
322 // has no base relocs to apply
323 // Obviously having base relocations with RELOCS_STRIPPED==1 is invalid.
325 // Look at the file header to determine if relocations have been stripped, and
326 // save this info in the image context for later use.
328 if ((!(ImageContext
->IsTeImage
)) && ((Hdr
.Pe32
->FileHeader
.Characteristics
& EFI_IMAGE_FILE_RELOCS_STRIPPED
) != 0)) {
329 ImageContext
->RelocationsStripped
= TRUE
;
331 ImageContext
->RelocationsStripped
= FALSE
;
334 if (!(ImageContext
->IsTeImage
)) {
335 if (Magic
== EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
) {
339 NumberOfRvaAndSizes
= Hdr
.Pe32
->OptionalHeader
.NumberOfRvaAndSizes
;
340 DebugDirectoryEntry
= (EFI_IMAGE_DATA_DIRECTORY
*)&(Hdr
.Pe32
->OptionalHeader
.DataDirectory
[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG
]);
345 NumberOfRvaAndSizes
= Hdr
.Pe32Plus
->OptionalHeader
.NumberOfRvaAndSizes
;
346 DebugDirectoryEntry
= (EFI_IMAGE_DATA_DIRECTORY
*)&(Hdr
.Pe32Plus
->OptionalHeader
.DataDirectory
[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG
]);
349 if (NumberOfRvaAndSizes
> EFI_IMAGE_DIRECTORY_ENTRY_DEBUG
) {
351 DebugDirectoryEntryRva
= DebugDirectoryEntry
->VirtualAddress
;
354 // Determine the file offset of the debug directory... This means we walk
355 // the sections to find which section contains the RVA of the debug
358 DebugDirectoryEntryFileOffset
= 0;
360 SectionHeaderOffset
= (UINTN
)(
361 ImageContext
->PeCoffHeaderOffset
+
363 sizeof (EFI_IMAGE_FILE_HEADER
) +
364 Hdr
.Pe32
->FileHeader
.SizeOfOptionalHeader
367 for (Index
= 0; Index
< Hdr
.Pe32
->FileHeader
.NumberOfSections
; Index
++) {
369 // Read section header from file
371 Size
= sizeof (EFI_IMAGE_SECTION_HEADER
);
372 Status
= ImageContext
->ImageRead (
373 ImageContext
->Handle
,
378 if (RETURN_ERROR (Status
)) {
379 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
383 if (DebugDirectoryEntryRva
>= SectionHeader
.VirtualAddress
&&
384 DebugDirectoryEntryRva
< SectionHeader
.VirtualAddress
+ SectionHeader
.Misc
.VirtualSize
) {
386 DebugDirectoryEntryFileOffset
= DebugDirectoryEntryRva
- SectionHeader
.VirtualAddress
+ SectionHeader
.PointerToRawData
;
390 SectionHeaderOffset
+= sizeof (EFI_IMAGE_SECTION_HEADER
);
393 if (DebugDirectoryEntryFileOffset
!= 0) {
394 for (Index
= 0; Index
< DebugDirectoryEntry
->Size
; Index
++) {
396 // Read next debug directory entry
398 Size
= sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
);
399 Status
= ImageContext
->ImageRead (
400 ImageContext
->Handle
,
401 DebugDirectoryEntryFileOffset
,
405 if (RETURN_ERROR (Status
)) {
406 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
410 if (DebugEntry
.Type
== EFI_IMAGE_DEBUG_TYPE_CODEVIEW
) {
411 ImageContext
->DebugDirectoryEntryRva
= (UINT32
) (DebugDirectoryEntryRva
+ Index
* sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
));
412 if (DebugEntry
.RVA
== 0 && DebugEntry
.FileOffset
!= 0) {
413 ImageContext
->ImageSize
+= DebugEntry
.SizeOfData
;
416 return RETURN_SUCCESS
;
423 DebugDirectoryEntry
= &Hdr
.Te
->DataDirectory
[1];
424 DebugDirectoryEntryRva
= DebugDirectoryEntry
->VirtualAddress
;
425 SectionHeaderOffset
= (UINTN
)(sizeof (EFI_TE_IMAGE_HEADER
));
427 DebugDirectoryEntryFileOffset
= 0;
429 for (Index
= 0; Index
< Hdr
.Te
->NumberOfSections
;) {
431 // Read section header from file
433 Size
= sizeof (EFI_IMAGE_SECTION_HEADER
);
434 Status
= ImageContext
->ImageRead (
435 ImageContext
->Handle
,
440 if (RETURN_ERROR (Status
)) {
441 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
445 if (DebugDirectoryEntryRva
>= SectionHeader
.VirtualAddress
&&
446 DebugDirectoryEntryRva
< SectionHeader
.VirtualAddress
+ SectionHeader
.Misc
.VirtualSize
) {
447 DebugDirectoryEntryFileOffset
= DebugDirectoryEntryRva
-
448 SectionHeader
.VirtualAddress
+
449 SectionHeader
.PointerToRawData
+
450 sizeof (EFI_TE_IMAGE_HEADER
) -
451 Hdr
.Te
->StrippedSize
;
454 // File offset of the debug directory was found, if this is not the last
455 // section, then skip to the last section for calculating the image size.
457 if (Index
< (UINTN
) Hdr
.Te
->NumberOfSections
- 1) {
458 SectionHeaderOffset
+= (Hdr
.Te
->NumberOfSections
- 1 - Index
) * sizeof (EFI_IMAGE_SECTION_HEADER
);
459 Index
= Hdr
.Te
->NumberOfSections
- 1;
465 // In Te image header there is not a field to describe the ImageSize.
466 // Actually, the ImageSize equals the RVA plus the VirtualSize of
467 // the last section mapped into memory (Must be rounded up to
468 // a mulitple of Section Alignment). Per the PE/COFF specification, the
469 // section headers in the Section Table must appear in order of the RVA
470 // values for the corresponding sections. So the ImageSize can be determined
471 // by the RVA and the VirtualSize of the last section header in the
474 if ((++Index
) == (UINTN
)Hdr
.Te
->NumberOfSections
) {
475 ImageContext
->ImageSize
= (SectionHeader
.VirtualAddress
+ SectionHeader
.Misc
.VirtualSize
+
476 ImageContext
->SectionAlignment
- 1) & ~(ImageContext
->SectionAlignment
- 1);
479 SectionHeaderOffset
+= sizeof (EFI_IMAGE_SECTION_HEADER
);
482 if (DebugDirectoryEntryFileOffset
!= 0) {
483 for (Index
= 0; Index
< DebugDirectoryEntry
->Size
; Index
++) {
485 // Read next debug directory entry
487 Size
= sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
);
488 Status
= ImageContext
->ImageRead (
489 ImageContext
->Handle
,
490 DebugDirectoryEntryFileOffset
,
494 if (RETURN_ERROR (Status
)) {
495 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
499 if (DebugEntry
.Type
== EFI_IMAGE_DEBUG_TYPE_CODEVIEW
) {
500 ImageContext
->DebugDirectoryEntryRva
= (UINT32
) (DebugDirectoryEntryRva
+ Index
* sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
));
501 return RETURN_SUCCESS
;
507 return RETURN_SUCCESS
;
512 Converts an image address to the loaded address.
514 @param ImageContext The context of the image being loaded.
515 @param Address The address to be converted to the loaded address.
517 @return The converted address or NULL if the address can not be converted.
521 PeCoffLoaderImageAddress (
522 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT
*ImageContext
,
527 // @bug Check to make sure ImageSize is correct for the relocated image.
528 // it may only work for the file we start with and not the relocated image
530 if (Address
>= ImageContext
->ImageSize
) {
531 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_IMAGE_ADDRESS
;
535 return (CHAR8
*)((UINTN
) ImageContext
->ImageAddress
+ Address
);
539 Applies relocation fixups to a PE/COFF image that was loaded with PeCoffLoaderLoadImage().
541 If the DestinationAddress field of ImageContext is 0, then use the ImageAddress field of
542 ImageContext as the relocation base address. Otherwise, use the DestinationAddress field
543 of ImageContext as the relocation base address. The caller must allocate the relocation
544 fixup log buffer and fill in the FixupData field of ImageContext prior to calling this function.
545 If ImageContext is NULL, then ASSERT().
547 @param ImageContext Pointer to the image context structure that describes the PE/COFF
548 image that is being relocated.
550 @retval RETURN_SUCCESS The PE/COFF image was relocated.
551 Extended status information is in the ImageError field of ImageContext.
552 @retval RETURN_LOAD_ERROR The image in not a valid PE/COFF image.
553 Extended status information is in the ImageError field of ImageContext.
554 @retval RETURN_UNSUPPORTED A relocation record type is not supported.
555 Extended status information is in the ImageError field of ImageContext.
560 PeCoffLoaderRelocateImage (
561 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT
*ImageContext
564 RETURN_STATUS Status
;
565 EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
;
566 EFI_IMAGE_DATA_DIRECTORY
*RelocDir
;
568 EFI_IMAGE_BASE_RELOCATION
*RelocBase
;
569 EFI_IMAGE_BASE_RELOCATION
*RelocBaseEnd
;
578 PHYSICAL_ADDRESS BaseAddress
;
579 UINT32 NumberOfRvaAndSizes
;
582 ASSERT (ImageContext
!= NULL
);
587 ImageContext
->ImageError
= IMAGE_ERROR_SUCCESS
;
590 // If there are no relocation entries, then we are done
592 if (ImageContext
->RelocationsStripped
) {
593 return RETURN_SUCCESS
;
597 // If the destination address is not 0, use that rather than the
598 // image address as the relocation target.
600 if (ImageContext
->DestinationAddress
!= 0) {
601 BaseAddress
= ImageContext
->DestinationAddress
;
603 BaseAddress
= ImageContext
->ImageAddress
;
606 if (!(ImageContext
->IsTeImage
)) {
607 Hdr
.Pe32
= (EFI_IMAGE_NT_HEADERS32
*)((UINTN
)ImageContext
->ImageAddress
+ ImageContext
->PeCoffHeaderOffset
);
609 Magic
= PeCoffLoaderGetPeHeaderMagicValue (Hdr
);
611 if (Magic
== EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
) {
615 Adjust
= (UINT64
)BaseAddress
- Hdr
.Pe32
->OptionalHeader
.ImageBase
;
616 Hdr
.Pe32
->OptionalHeader
.ImageBase
= (UINT32
)BaseAddress
;
618 NumberOfRvaAndSizes
= Hdr
.Pe32
->OptionalHeader
.NumberOfRvaAndSizes
;
619 RelocDir
= &Hdr
.Pe32
->OptionalHeader
.DataDirectory
[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
];
624 Adjust
= (UINT64
) BaseAddress
- Hdr
.Pe32Plus
->OptionalHeader
.ImageBase
;
625 Hdr
.Pe32Plus
->OptionalHeader
.ImageBase
= (UINT64
)BaseAddress
;
627 NumberOfRvaAndSizes
= Hdr
.Pe32Plus
->OptionalHeader
.NumberOfRvaAndSizes
;
628 RelocDir
= &Hdr
.Pe32Plus
->OptionalHeader
.DataDirectory
[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
];
632 // Find the relocation block
633 // Per the PE/COFF spec, you can't assume that a given data directory
634 // is present in the image. You have to check the NumberOfRvaAndSizes in
635 // the optional header to verify a desired directory entry is there.
638 if (NumberOfRvaAndSizes
> EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
) {
639 RelocBase
= PeCoffLoaderImageAddress (ImageContext
, RelocDir
->VirtualAddress
);
640 RelocBaseEnd
= PeCoffLoaderImageAddress (
642 RelocDir
->VirtualAddress
+ RelocDir
->Size
- 1
646 // Set base and end to bypass processing below.
648 RelocBase
= RelocBaseEnd
= 0;
651 Hdr
.Te
= (EFI_TE_IMAGE_HEADER
*)(UINTN
)(ImageContext
->ImageAddress
);
652 Adjust
= (UINT64
) (BaseAddress
- Hdr
.Te
->ImageBase
);
653 Hdr
.Te
->ImageBase
= (UINT64
) (BaseAddress
);
656 // Find the relocation block
658 RelocDir
= &Hdr
.Te
->DataDirectory
[0];
659 RelocBase
= (EFI_IMAGE_BASE_RELOCATION
*)(UINTN
)(
660 ImageContext
->ImageAddress
+
661 RelocDir
->VirtualAddress
+
662 sizeof(EFI_TE_IMAGE_HEADER
) -
665 RelocBaseEnd
= (EFI_IMAGE_BASE_RELOCATION
*) ((UINTN
) RelocBase
+ (UINTN
) RelocDir
->Size
- 1);
669 // Run the relocation information and apply the fixups
671 FixupData
= ImageContext
->FixupData
;
672 while (RelocBase
< RelocBaseEnd
) {
674 Reloc
= (UINT16
*) ((CHAR8
*) RelocBase
+ sizeof (EFI_IMAGE_BASE_RELOCATION
));
675 RelocEnd
= (UINT16
*) ((CHAR8
*) RelocBase
+ RelocBase
->SizeOfBlock
);
676 if (!(ImageContext
->IsTeImage
)) {
677 FixupBase
= PeCoffLoaderImageAddress (ImageContext
, RelocBase
->VirtualAddress
);
679 FixupBase
= (CHAR8
*)(UINTN
)(ImageContext
->ImageAddress
+
680 RelocBase
->VirtualAddress
+
681 sizeof(EFI_TE_IMAGE_HEADER
) -
686 if ((CHAR8
*) RelocEnd
< (CHAR8
*) ((UINTN
) ImageContext
->ImageAddress
) ||
687 (CHAR8
*) RelocEnd
> (CHAR8
*)((UINTN
)ImageContext
->ImageAddress
+
688 (UINTN
)ImageContext
->ImageSize
)) {
689 ImageContext
->ImageError
= IMAGE_ERROR_FAILED_RELOCATION
;
690 return RETURN_LOAD_ERROR
;
694 // Run this relocation record
696 while (Reloc
< RelocEnd
) {
698 Fixup
= FixupBase
+ (*Reloc
& 0xFFF);
699 switch ((*Reloc
) >> 12) {
700 case EFI_IMAGE_REL_BASED_ABSOLUTE
:
703 case EFI_IMAGE_REL_BASED_HIGH
:
704 F16
= (UINT16
*) Fixup
;
705 *F16
= (UINT16
) (*F16
+ ((UINT16
) ((UINT32
) Adjust
>> 16)));
706 if (FixupData
!= NULL
) {
707 *(UINT16
*) FixupData
= *F16
;
708 FixupData
= FixupData
+ sizeof (UINT16
);
712 case EFI_IMAGE_REL_BASED_LOW
:
713 F16
= (UINT16
*) Fixup
;
714 *F16
= (UINT16
) (*F16
+ (UINT16
) Adjust
);
715 if (FixupData
!= NULL
) {
716 *(UINT16
*) FixupData
= *F16
;
717 FixupData
= FixupData
+ sizeof (UINT16
);
721 case EFI_IMAGE_REL_BASED_HIGHLOW
:
722 F32
= (UINT32
*) Fixup
;
723 *F32
= *F32
+ (UINT32
) Adjust
;
724 if (FixupData
!= NULL
) {
725 FixupData
= ALIGN_POINTER (FixupData
, sizeof (UINT32
));
726 *(UINT32
*)FixupData
= *F32
;
727 FixupData
= FixupData
+ sizeof (UINT32
);
731 case EFI_IMAGE_REL_BASED_DIR64
:
732 F64
= (UINT64
*) Fixup
;
733 *F64
= *F64
+ (UINT64
) Adjust
;
734 if (FixupData
!= NULL
) {
735 FixupData
= ALIGN_POINTER (FixupData
, sizeof(UINT64
));
736 *(UINT64
*)(FixupData
) = *F64
;
737 FixupData
= FixupData
+ sizeof(UINT64
);
743 // The common code does not handle some of the stranger IPF relocations
744 // PeCoffLoaderRelocateImageEx () addes support for these complex fixups
745 // on IPF and is a No-Op on other archtiectures.
747 Status
= PeCoffLoaderRelocateImageEx (Reloc
, Fixup
, &FixupData
, Adjust
);
748 if (RETURN_ERROR (Status
)) {
749 ImageContext
->ImageError
= IMAGE_ERROR_FAILED_RELOCATION
;
755 // Next relocation record
763 RelocBase
= (EFI_IMAGE_BASE_RELOCATION
*) RelocEnd
;
766 return RETURN_SUCCESS
;
770 Loads a PE/COFF image into memory.
772 Loads the PE/COFF image accessed through the ImageRead service of ImageContext into the buffer
773 specified by the ImageAddress and ImageSize fields of ImageContext. The caller must allocate
774 the load buffer and fill in the ImageAddress and ImageSize fields prior to calling this function.
775 The EntryPoint, FixupDataSize, CodeView, and PdbPointer fields of ImageContext are computed.
776 If ImageContext is NULL, then ASSERT().
778 @param ImageContext Pointer to the image context structure that describes the PE/COFF
779 image that is being loaded.
781 @retval RETURN_SUCCESS The PE/COFF image was loaded into the buffer specified by
782 the ImageAddress and ImageSize fields of ImageContext.
783 Extended status information is in the ImageError field of ImageContext.
784 @retval RETURN_BUFFER_TOO_SMALL The caller did not provide a large enough buffer.
785 Extended status information is in the ImageError field of ImageContext.
786 @retval RETURN_LOAD_ERROR The PE/COFF image is an EFI Runtime image with no relocations.
787 Extended status information is in the ImageError field of ImageContext.
788 @retval RETURN_INVALID_PARAMETER The image address is invalid.
789 Extended status information is in the ImageError field of ImageContext.
794 PeCoffLoaderLoadImage (
795 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT
*ImageContext
798 RETURN_STATUS Status
;
799 EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
;
800 PE_COFF_LOADER_IMAGE_CONTEXT CheckContext
;
801 EFI_IMAGE_SECTION_HEADER
*FirstSection
;
802 EFI_IMAGE_SECTION_HEADER
*Section
;
803 UINTN NumberOfSections
;
808 EFI_IMAGE_DATA_DIRECTORY
*DirectoryEntry
;
809 EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
*DebugEntry
;
811 UINT32 TempDebugEntryRva
;
812 UINT32 NumberOfRvaAndSizes
;
815 ASSERT (ImageContext
!= NULL
);
820 ImageContext
->ImageError
= IMAGE_ERROR_SUCCESS
;
823 // Copy the provided context info into our local version, get what we
824 // can from the original image, and then use that to make sure everything
827 CopyMem (&CheckContext
, ImageContext
, sizeof (PE_COFF_LOADER_IMAGE_CONTEXT
));
829 Status
= PeCoffLoaderGetImageInfo (&CheckContext
);
830 if (RETURN_ERROR (Status
)) {
835 // Make sure there is enough allocated space for the image being loaded
837 if (ImageContext
->ImageSize
< CheckContext
.ImageSize
) {
838 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_IMAGE_SIZE
;
839 return RETURN_BUFFER_TOO_SMALL
;
841 if (ImageContext
->ImageAddress
== 0) {
843 // Image cannot be loaded into 0 address.
845 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_IMAGE_ADDRESS
;
846 return RETURN_INVALID_PARAMETER
;
849 // If there's no relocations, then make sure it's not a runtime driver,
850 // and that it's being loaded at the linked address.
852 if (CheckContext
.RelocationsStripped
) {
854 // If the image does not contain relocations and it is a runtime driver
855 // then return an error.
857 if (CheckContext
.ImageType
== EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER
) {
858 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_SUBSYSTEM
;
859 return RETURN_LOAD_ERROR
;
862 // If the image does not contain relocations, and the requested load address
863 // is not the linked address, then return an error.
865 if (CheckContext
.ImageAddress
!= ImageContext
->ImageAddress
) {
866 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_IMAGE_ADDRESS
;
867 return RETURN_INVALID_PARAMETER
;
871 // Make sure the allocated space has the proper section alignment
873 if (!(ImageContext
->IsTeImage
)) {
874 if ((ImageContext
->ImageAddress
& (CheckContext
.SectionAlignment
- 1)) != 0) {
875 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_SECTION_ALIGNMENT
;
876 return RETURN_INVALID_PARAMETER
;
880 // Read the entire PE/COFF or TE header into memory
882 if (!(ImageContext
->IsTeImage
)) {
883 Status
= ImageContext
->ImageRead (
884 ImageContext
->Handle
,
886 &ImageContext
->SizeOfHeaders
,
887 (VOID
*) (UINTN
) ImageContext
->ImageAddress
890 Hdr
.Pe32
= (EFI_IMAGE_NT_HEADERS32
*)((UINTN
)ImageContext
->ImageAddress
+ ImageContext
->PeCoffHeaderOffset
);
892 FirstSection
= (EFI_IMAGE_SECTION_HEADER
*) (
893 (UINTN
)ImageContext
->ImageAddress
+
894 ImageContext
->PeCoffHeaderOffset
+
896 sizeof(EFI_IMAGE_FILE_HEADER
) +
897 Hdr
.Pe32
->FileHeader
.SizeOfOptionalHeader
899 NumberOfSections
= (UINTN
) (Hdr
.Pe32
->FileHeader
.NumberOfSections
);
901 Status
= ImageContext
->ImageRead (
902 ImageContext
->Handle
,
904 &ImageContext
->SizeOfHeaders
,
905 (void *)(UINTN
)ImageContext
->ImageAddress
908 Hdr
.Te
= (EFI_TE_IMAGE_HEADER
*)(UINTN
)(ImageContext
->ImageAddress
);
910 FirstSection
= (EFI_IMAGE_SECTION_HEADER
*) (
911 (UINTN
)ImageContext
->ImageAddress
+
912 sizeof(EFI_TE_IMAGE_HEADER
)
914 NumberOfSections
= (UINTN
) (Hdr
.Te
->NumberOfSections
);
918 if (RETURN_ERROR (Status
)) {
919 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
920 return RETURN_LOAD_ERROR
;
924 // Load each section of the image
926 Section
= FirstSection
;
927 for (Index
= 0, MaxEnd
= NULL
; Index
< NumberOfSections
; Index
++) {
930 // Compute sections address
932 Base
= PeCoffLoaderImageAddress (ImageContext
, Section
->VirtualAddress
);
933 End
= PeCoffLoaderImageAddress (
935 Section
->VirtualAddress
+ Section
->Misc
.VirtualSize
- 1
937 if (ImageContext
->IsTeImage
) {
938 Base
= (CHAR8
*)((UINTN
) Base
+ sizeof (EFI_TE_IMAGE_HEADER
) - (UINTN
)Hdr
.Te
->StrippedSize
);
939 End
= (CHAR8
*)((UINTN
) End
+ sizeof (EFI_TE_IMAGE_HEADER
) - (UINTN
)Hdr
.Te
->StrippedSize
);
946 // If the base start or end address resolved to 0, then fail.
948 if ((Base
== NULL
) || (End
== NULL
)) {
949 ImageContext
->ImageError
= IMAGE_ERROR_SECTION_NOT_LOADED
;
950 return RETURN_LOAD_ERROR
;
956 Size
= (UINTN
) Section
->Misc
.VirtualSize
;
957 if ((Size
== 0) || (Size
> Section
->SizeOfRawData
)) {
958 Size
= (UINTN
) Section
->SizeOfRawData
;
961 if (Section
->SizeOfRawData
) {
962 if (!(ImageContext
->IsTeImage
)) {
963 Status
= ImageContext
->ImageRead (
964 ImageContext
->Handle
,
965 Section
->PointerToRawData
,
970 Status
= ImageContext
->ImageRead (
971 ImageContext
->Handle
,
972 Section
->PointerToRawData
+ sizeof (EFI_TE_IMAGE_HEADER
) - (UINTN
)Hdr
.Te
->StrippedSize
,
978 if (RETURN_ERROR (Status
)) {
979 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
985 // If raw size is less then virt size, zero fill the remaining
988 if (Size
< Section
->Misc
.VirtualSize
) {
989 ZeroMem (Base
+ Size
, Section
->Misc
.VirtualSize
- Size
);
999 // Get image's entry point
1001 Magic
= PeCoffLoaderGetPeHeaderMagicValue (Hdr
);
1002 if (!(ImageContext
->IsTeImage
)) {
1004 // Sizes of AddressOfEntryPoint are different so we need to do this safely
1006 if (Magic
== EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
) {
1010 ImageContext
->EntryPoint
= (PHYSICAL_ADDRESS
)(UINTN
)PeCoffLoaderImageAddress (
1012 (UINTN
)Hdr
.Pe32
->OptionalHeader
.AddressOfEntryPoint
1018 ImageContext
->EntryPoint
= (PHYSICAL_ADDRESS
)(UINTN
)PeCoffLoaderImageAddress (
1020 (UINTN
)Hdr
.Pe32Plus
->OptionalHeader
.AddressOfEntryPoint
1024 ImageContext
->EntryPoint
= (PHYSICAL_ADDRESS
) (
1025 (UINTN
)ImageContext
->ImageAddress
+
1026 (UINTN
)Hdr
.Te
->AddressOfEntryPoint
+
1027 (UINTN
)sizeof(EFI_TE_IMAGE_HEADER
) -
1028 (UINTN
)Hdr
.Te
->StrippedSize
1033 // Determine the size of the fixup data
1035 // Per the PE/COFF spec, you can't assume that a given data directory
1036 // is present in the image. You have to check the NumberOfRvaAndSizes in
1037 // the optional header to verify a desired directory entry is there.
1039 if (!(ImageContext
->IsTeImage
)) {
1040 if (Magic
== EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
) {
1044 NumberOfRvaAndSizes
= Hdr
.Pe32
->OptionalHeader
.NumberOfRvaAndSizes
;
1045 DirectoryEntry
= (EFI_IMAGE_DATA_DIRECTORY
*)&Hdr
.Pe32
->OptionalHeader
.DataDirectory
[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
];
1050 NumberOfRvaAndSizes
= Hdr
.Pe32Plus
->OptionalHeader
.NumberOfRvaAndSizes
;
1051 DirectoryEntry
= (EFI_IMAGE_DATA_DIRECTORY
*)&Hdr
.Pe32Plus
->OptionalHeader
.DataDirectory
[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
];
1054 if (NumberOfRvaAndSizes
> EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
) {
1055 ImageContext
->FixupDataSize
= DirectoryEntry
->Size
/ sizeof (UINT16
) * sizeof (UINTN
);
1057 ImageContext
->FixupDataSize
= 0;
1060 DirectoryEntry
= &Hdr
.Te
->DataDirectory
[0];
1061 ImageContext
->FixupDataSize
= DirectoryEntry
->Size
/ sizeof (UINT16
) * sizeof (UINTN
);
1064 // Consumer must allocate a buffer for the relocation fixup log.
1065 // Only used for runtime drivers.
1067 ImageContext
->FixupData
= NULL
;
1070 // Load the Codeview info if present
1072 if (ImageContext
->DebugDirectoryEntryRva
!= 0) {
1073 if (!(ImageContext
->IsTeImage
)) {
1074 DebugEntry
= PeCoffLoaderImageAddress (
1076 ImageContext
->DebugDirectoryEntryRva
1079 DebugEntry
= (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
*)(UINTN
)(
1080 ImageContext
->ImageAddress
+
1081 ImageContext
->DebugDirectoryEntryRva
+
1082 sizeof(EFI_TE_IMAGE_HEADER
) -
1083 Hdr
.Te
->StrippedSize
1087 if (DebugEntry
!= NULL
) {
1088 TempDebugEntryRva
= DebugEntry
->RVA
;
1089 if (DebugEntry
->RVA
== 0 && DebugEntry
->FileOffset
!= 0) {
1091 if ((UINTN
)Section
->SizeOfRawData
< Section
->Misc
.VirtualSize
) {
1092 TempDebugEntryRva
= Section
->VirtualAddress
+ Section
->Misc
.VirtualSize
;
1094 TempDebugEntryRva
= Section
->VirtualAddress
+ Section
->SizeOfRawData
;
1098 if (TempDebugEntryRva
!= 0) {
1099 if (!(ImageContext
->IsTeImage
)) {
1100 ImageContext
->CodeView
= PeCoffLoaderImageAddress (ImageContext
, TempDebugEntryRva
);
1102 ImageContext
->CodeView
= (VOID
*)(
1103 (UINTN
)ImageContext
->ImageAddress
+
1104 (UINTN
)TempDebugEntryRva
+
1105 (UINTN
)sizeof (EFI_TE_IMAGE_HEADER
) -
1106 (UINTN
) Hdr
.Te
->StrippedSize
1110 if (ImageContext
->CodeView
== NULL
) {
1111 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
1112 return RETURN_LOAD_ERROR
;
1115 if (DebugEntry
->RVA
== 0) {
1116 Size
= DebugEntry
->SizeOfData
;
1117 if (!(ImageContext
->IsTeImage
)) {
1118 Status
= ImageContext
->ImageRead (
1119 ImageContext
->Handle
,
1120 DebugEntry
->FileOffset
,
1122 ImageContext
->CodeView
1125 Status
= ImageContext
->ImageRead (
1126 ImageContext
->Handle
,
1127 DebugEntry
->FileOffset
+ sizeof (EFI_TE_IMAGE_HEADER
) - Hdr
.Te
->StrippedSize
,
1129 ImageContext
->CodeView
1132 // Should we apply fix up to this field according to the size difference between PE and TE?
1133 // Because now we maintain TE header fields unfixed, this field will also remain as they are
1134 // in original PE image.
1138 if (RETURN_ERROR (Status
)) {
1139 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
1140 return RETURN_LOAD_ERROR
;
1143 DebugEntry
->RVA
= TempDebugEntryRva
;
1146 switch (*(UINT32
*) ImageContext
->CodeView
) {
1147 case CODEVIEW_SIGNATURE_NB10
:
1148 ImageContext
->PdbPointer
= (CHAR8
*)ImageContext
->CodeView
+ sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY
);
1151 case CODEVIEW_SIGNATURE_RSDS
:
1152 ImageContext
->PdbPointer
= (CHAR8
*)ImageContext
->CodeView
+ sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY
);
1167 Reapply fixups on a fixed up PE32/PE32+ image to allow virutal calling at EFI
1170 PE_COFF_LOADER_IMAGE_CONTEXT.FixupData stores information needed to reapply
1171 the fixups with a virtual mapping.
1174 @param ImageBase Base address of relocated image
1175 @param VirtImageBase Virtual mapping for ImageBase
1176 @param ImageSize Size of the image to relocate
1177 @param RelocationData Location to place results of read
1182 PeCoffLoaderRelocateImageForRuntime (
1183 IN PHYSICAL_ADDRESS ImageBase
,
1184 IN PHYSICAL_ADDRESS VirtImageBase
,
1186 IN VOID
*RelocationData
1191 EFI_IMAGE_DOS_HEADER
*DosHdr
;
1192 EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
;
1193 UINT32 NumberOfRvaAndSizes
;
1194 EFI_IMAGE_DATA_DIRECTORY
*DataDirectory
;
1195 EFI_IMAGE_DATA_DIRECTORY
*RelocDir
;
1196 EFI_IMAGE_BASE_RELOCATION
*RelocBase
;
1197 EFI_IMAGE_BASE_RELOCATION
*RelocBaseEnd
;
1207 RETURN_STATUS Status
;
1210 OldBase
= (CHAR8
*)((UINTN
)ImageBase
);
1211 NewBase
= (CHAR8
*)((UINTN
)VirtImageBase
);
1212 Adjust
= (UINTN
) NewBase
- (UINTN
) OldBase
;
1215 // Find the image's relocate dir info
1217 DosHdr
= (EFI_IMAGE_DOS_HEADER
*)OldBase
;
1218 if (DosHdr
->e_magic
== EFI_IMAGE_DOS_SIGNATURE
) {
1220 // Valid DOS header so get address of PE header
1222 Hdr
.Pe32
= (EFI_IMAGE_NT_HEADERS32
*)(((CHAR8
*)DosHdr
) + DosHdr
->e_lfanew
);
1225 // No Dos header so assume image starts with PE header.
1227 Hdr
.Pe32
= (EFI_IMAGE_NT_HEADERS32
*)OldBase
;
1230 if (Hdr
.Pe32
->Signature
!= EFI_IMAGE_NT_SIGNATURE
) {
1232 // Not a valid PE image so Exit
1237 Magic
= PeCoffLoaderGetPeHeaderMagicValue (Hdr
);
1239 if (Magic
== EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
) {
1243 NumberOfRvaAndSizes
= Hdr
.Pe32
->OptionalHeader
.NumberOfRvaAndSizes
;
1244 DataDirectory
= (EFI_IMAGE_DATA_DIRECTORY
*)&(Hdr
.Pe32
->OptionalHeader
.DataDirectory
[0]);
1249 NumberOfRvaAndSizes
= Hdr
.Pe32Plus
->OptionalHeader
.NumberOfRvaAndSizes
;
1250 DataDirectory
= (EFI_IMAGE_DATA_DIRECTORY
*)&(Hdr
.Pe32Plus
->OptionalHeader
.DataDirectory
[0]);
1254 // Find the relocation block
1256 // Per the PE/COFF spec, you can't assume that a given data directory
1257 // is present in the image. You have to check the NumberOfRvaAndSizes in
1258 // the optional header to verify a desired directory entry is there.
1260 if (NumberOfRvaAndSizes
> EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
) {
1261 RelocDir
= DataDirectory
+ EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
;
1262 RelocBase
= (EFI_IMAGE_BASE_RELOCATION
*)(UINTN
)(ImageBase
+ RelocDir
->VirtualAddress
);
1263 RelocBaseEnd
= (EFI_IMAGE_BASE_RELOCATION
*)(UINTN
)(ImageBase
+ RelocDir
->VirtualAddress
+ RelocDir
->Size
);
1266 // Cannot find relocations, cannot continue
1272 ASSERT (RelocBase
!= NULL
&& RelocBaseEnd
!= NULL
);
1275 // Run the whole relocation block. And re-fixup data that has not been
1276 // modified. The FixupData is used to see if the image has been modified
1277 // since it was relocated. This is so data sections that have been updated
1278 // by code will not be fixed up, since that would set them back to
1281 FixupData
= RelocationData
;
1282 while (RelocBase
< RelocBaseEnd
) {
1284 Reloc
= (UINT16
*) ((UINT8
*) RelocBase
+ sizeof (EFI_IMAGE_BASE_RELOCATION
));
1285 RelocEnd
= (UINT16
*) ((UINT8
*) RelocBase
+ RelocBase
->SizeOfBlock
);
1286 FixupBase
= (CHAR8
*) ((UINTN
)ImageBase
) + RelocBase
->VirtualAddress
;
1289 // Run this relocation record
1291 while (Reloc
< RelocEnd
) {
1293 Fixup
= FixupBase
+ (*Reloc
& 0xFFF);
1294 switch ((*Reloc
) >> 12) {
1296 case EFI_IMAGE_REL_BASED_ABSOLUTE
:
1299 case EFI_IMAGE_REL_BASED_HIGH
:
1300 F16
= (UINT16
*) Fixup
;
1301 if (*(UINT16
*) FixupData
== *F16
) {
1302 *F16
= (UINT16
) (*F16
+ ((UINT16
) ((UINT32
) Adjust
>> 16)));
1305 FixupData
= FixupData
+ sizeof (UINT16
);
1308 case EFI_IMAGE_REL_BASED_LOW
:
1309 F16
= (UINT16
*) Fixup
;
1310 if (*(UINT16
*) FixupData
== *F16
) {
1311 *F16
= (UINT16
) (*F16
+ ((UINT16
) Adjust
& 0xffff));
1314 FixupData
= FixupData
+ sizeof (UINT16
);
1317 case EFI_IMAGE_REL_BASED_HIGHLOW
:
1318 F32
= (UINT32
*) Fixup
;
1319 FixupData
= ALIGN_POINTER (FixupData
, sizeof (UINT32
));
1320 if (*(UINT32
*) FixupData
== *F32
) {
1321 *F32
= *F32
+ (UINT32
) Adjust
;
1324 FixupData
= FixupData
+ sizeof (UINT32
);
1327 case EFI_IMAGE_REL_BASED_DIR64
:
1328 F64
= (UINT64
*)Fixup
;
1329 FixupData
= ALIGN_POINTER (FixupData
, sizeof (UINT64
));
1330 if (*(UINT64
*) FixupData
== *F64
) {
1331 *F64
= *F64
+ (UINT64
)Adjust
;
1334 FixupData
= FixupData
+ sizeof (UINT64
);
1337 case EFI_IMAGE_REL_BASED_HIGHADJ
:
1339 // Not implemented, but not used in EFI 1.0
1346 // Only Itanium requires ConvertPeImage_Ex
1348 Status
= PeHotRelocateImageEx (Reloc
, Fixup
, &FixupData
, Adjust
);
1349 if (RETURN_ERROR (Status
)) {
1354 // Next relocation record
1361 RelocBase
= (EFI_IMAGE_BASE_RELOCATION
*) RelocEnd
;
1367 ImageRead function that operates on a memory buffer whos base is passed into
1370 @param FileHandle Ponter to baes of the input stream
1371 @param FileOffset Offset to the start of the buffer
1372 @param ReadSize Number of bytes to copy into the buffer
1373 @param Buffer Location to place results of read
1375 @retval RETURN_SUCCESS Data is read from FileOffset from the Handle into
1380 PeCoffLoaderImageReadFromMemory (
1381 IN VOID
*FileHandle
,
1382 IN UINTN FileOffset
,
1383 IN OUT UINTN
*ReadSize
,
1387 CopyMem (Buffer
, ((UINT8
*)FileHandle
) + FileOffset
, *ReadSize
);
1388 return RETURN_SUCCESS
;