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
+ sizeof (EFI_TE_IMAGE_HEADER
) - Hdr
.Te
->StrippedSize
);
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
+= Size
) {
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
;
409 if (DebugEntry
.Type
== EFI_IMAGE_DEBUG_TYPE_CODEVIEW
) {
410 ImageContext
->DebugDirectoryEntryRva
= (UINT32
) (DebugDirectoryEntryRva
+ Index
);
411 if (DebugEntry
.RVA
== 0 && DebugEntry
.FileOffset
!= 0) {
412 ImageContext
->ImageSize
+= DebugEntry
.SizeOfData
;
415 return RETURN_SUCCESS
;
422 DebugDirectoryEntry
= &Hdr
.Te
->DataDirectory
[1];
423 DebugDirectoryEntryRva
= DebugDirectoryEntry
->VirtualAddress
;
424 SectionHeaderOffset
= (UINTN
)(sizeof (EFI_TE_IMAGE_HEADER
));
426 DebugDirectoryEntryFileOffset
= 0;
428 for (Index
= 0; Index
< Hdr
.Te
->NumberOfSections
;) {
430 // Read section header from file
432 Size
= sizeof (EFI_IMAGE_SECTION_HEADER
);
433 Status
= ImageContext
->ImageRead (
434 ImageContext
->Handle
,
439 if (RETURN_ERROR (Status
)) {
440 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
444 if (DebugDirectoryEntryRva
>= SectionHeader
.VirtualAddress
&&
445 DebugDirectoryEntryRva
< SectionHeader
.VirtualAddress
+ SectionHeader
.Misc
.VirtualSize
) {
446 DebugDirectoryEntryFileOffset
= DebugDirectoryEntryRva
-
447 SectionHeader
.VirtualAddress
+
448 SectionHeader
.PointerToRawData
+
449 sizeof (EFI_TE_IMAGE_HEADER
) -
450 Hdr
.Te
->StrippedSize
;
453 // File offset of the debug directory was found, if this is not the last
454 // section, then skip to the last section for calculating the image size.
456 if (Index
< (UINTN
) Hdr
.Te
->NumberOfSections
- 1) {
457 SectionHeaderOffset
+= (Hdr
.Te
->NumberOfSections
- 1 - Index
) * sizeof (EFI_IMAGE_SECTION_HEADER
);
458 Index
= Hdr
.Te
->NumberOfSections
- 1;
464 // In Te image header there is not a field to describe the ImageSize.
465 // Actually, the ImageSize equals the RVA plus the VirtualSize of
466 // the last section mapped into memory (Must be rounded up to
467 // a mulitple of Section Alignment). Per the PE/COFF specification, the
468 // section headers in the Section Table must appear in order of the RVA
469 // values for the corresponding sections. So the ImageSize can be determined
470 // by the RVA and the VirtualSize of the last section header in the
473 if ((++Index
) == (UINTN
)Hdr
.Te
->NumberOfSections
) {
474 ImageContext
->ImageSize
= (SectionHeader
.VirtualAddress
+ SectionHeader
.Misc
.VirtualSize
+
475 ImageContext
->SectionAlignment
- 1) & ~(ImageContext
->SectionAlignment
- 1);
478 SectionHeaderOffset
+= sizeof (EFI_IMAGE_SECTION_HEADER
);
481 if (DebugDirectoryEntryFileOffset
!= 0) {
482 for (Index
= 0; Index
< DebugDirectoryEntry
->Size
; Index
+= Size
) {
484 // Read next debug directory entry
486 Size
= sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
);
487 Status
= ImageContext
->ImageRead (
488 ImageContext
->Handle
,
489 DebugDirectoryEntryFileOffset
,
493 if (RETURN_ERROR (Status
)) {
494 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
498 if (DebugEntry
.Type
== EFI_IMAGE_DEBUG_TYPE_CODEVIEW
) {
499 ImageContext
->DebugDirectoryEntryRva
= (UINT32
) (DebugDirectoryEntryRva
+ Index
);
500 return RETURN_SUCCESS
;
506 return RETURN_SUCCESS
;
511 Converts an image address to the loaded address.
513 @param ImageContext The context of the image being loaded.
514 @param Address The address to be converted to the loaded address.
516 @return The converted address or NULL if the address can not be converted.
520 PeCoffLoaderImageAddress (
521 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT
*ImageContext
,
526 // @bug Check to make sure ImageSize is correct for the relocated image.
527 // it may only work for the file we start with and not the relocated image
529 if (Address
>= ImageContext
->ImageSize
) {
530 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_IMAGE_ADDRESS
;
534 return (CHAR8
*)((UINTN
) ImageContext
->ImageAddress
+ Address
);
538 Applies relocation fixups to a PE/COFF image that was loaded with PeCoffLoaderLoadImage().
540 If the DestinationAddress field of ImageContext is 0, then use the ImageAddress field of
541 ImageContext as the relocation base address. Otherwise, use the DestinationAddress field
542 of ImageContext as the relocation base address. The caller must allocate the relocation
543 fixup log buffer and fill in the FixupData field of ImageContext prior to calling this function.
544 If ImageContext is NULL, then ASSERT().
546 @param ImageContext Pointer to the image context structure that describes the PE/COFF
547 image that is being relocated.
549 @retval RETURN_SUCCESS The PE/COFF image was relocated.
550 Extended status information is in the ImageError field of ImageContext.
551 @retval RETURN_LOAD_ERROR The image in not a valid PE/COFF image.
552 Extended status information is in the ImageError field of ImageContext.
553 @retval RETURN_UNSUPPORTED A relocation record type is not supported.
554 Extended status information is in the ImageError field of ImageContext.
559 PeCoffLoaderRelocateImage (
560 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT
*ImageContext
563 RETURN_STATUS Status
;
564 EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
;
565 EFI_IMAGE_DATA_DIRECTORY
*RelocDir
;
567 EFI_IMAGE_BASE_RELOCATION
*RelocBase
;
568 EFI_IMAGE_BASE_RELOCATION
*RelocBaseEnd
;
577 PHYSICAL_ADDRESS BaseAddress
;
578 UINT32 NumberOfRvaAndSizes
;
581 ASSERT (ImageContext
!= NULL
);
586 ImageContext
->ImageError
= IMAGE_ERROR_SUCCESS
;
589 // If there are no relocation entries, then we are done
591 if (ImageContext
->RelocationsStripped
) {
592 return RETURN_SUCCESS
;
596 // If the destination address is not 0, use that rather than the
597 // image address as the relocation target.
599 if (ImageContext
->DestinationAddress
!= 0) {
600 BaseAddress
= ImageContext
->DestinationAddress
;
601 } else if (!(ImageContext
->IsTeImage
)) {
602 BaseAddress
= ImageContext
->ImageAddress
;
604 Hdr
.Te
= (EFI_TE_IMAGE_HEADER
*)(UINTN
)(ImageContext
->ImageAddress
);
605 BaseAddress
= ImageContext
->ImageAddress
+ sizeof (EFI_TE_IMAGE_HEADER
) - Hdr
.Te
->StrippedSize
;
608 if (!(ImageContext
->IsTeImage
)) {
609 Hdr
.Pe32
= (EFI_IMAGE_NT_HEADERS32
*)((UINTN
)ImageContext
->ImageAddress
+ ImageContext
->PeCoffHeaderOffset
);
611 Magic
= PeCoffLoaderGetPeHeaderMagicValue (Hdr
);
613 if (Magic
== EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
) {
617 Adjust
= (UINT64
)BaseAddress
- Hdr
.Pe32
->OptionalHeader
.ImageBase
;
618 Hdr
.Pe32
->OptionalHeader
.ImageBase
= (UINT32
)BaseAddress
;
620 NumberOfRvaAndSizes
= Hdr
.Pe32
->OptionalHeader
.NumberOfRvaAndSizes
;
621 RelocDir
= &Hdr
.Pe32
->OptionalHeader
.DataDirectory
[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
];
626 Adjust
= (UINT64
) BaseAddress
- Hdr
.Pe32Plus
->OptionalHeader
.ImageBase
;
627 Hdr
.Pe32Plus
->OptionalHeader
.ImageBase
= (UINT64
)BaseAddress
;
629 NumberOfRvaAndSizes
= Hdr
.Pe32Plus
->OptionalHeader
.NumberOfRvaAndSizes
;
630 RelocDir
= &Hdr
.Pe32Plus
->OptionalHeader
.DataDirectory
[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
];
634 // Find the relocation block
635 // Per the PE/COFF spec, you can't assume that a given data directory
636 // is present in the image. You have to check the NumberOfRvaAndSizes in
637 // the optional header to verify a desired directory entry is there.
640 if (NumberOfRvaAndSizes
> EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
) {
641 RelocBase
= PeCoffLoaderImageAddress (ImageContext
, RelocDir
->VirtualAddress
);
642 RelocBaseEnd
= PeCoffLoaderImageAddress (
644 RelocDir
->VirtualAddress
+ RelocDir
->Size
- 1
648 // Set base and end to bypass processing below.
650 RelocBase
= RelocBaseEnd
= 0;
653 Hdr
.Te
= (EFI_TE_IMAGE_HEADER
*)(UINTN
)(ImageContext
->ImageAddress
);
654 Adjust
= (UINT64
) (BaseAddress
- Hdr
.Te
->ImageBase
);
655 Hdr
.Te
->ImageBase
= (UINT64
) (BaseAddress
);
658 // Find the relocation block
660 RelocDir
= &Hdr
.Te
->DataDirectory
[0];
661 RelocBase
= (EFI_IMAGE_BASE_RELOCATION
*)(UINTN
)(
662 ImageContext
->ImageAddress
+
663 RelocDir
->VirtualAddress
+
664 sizeof(EFI_TE_IMAGE_HEADER
) -
667 RelocBaseEnd
= (EFI_IMAGE_BASE_RELOCATION
*) ((UINTN
) RelocBase
+ (UINTN
) RelocDir
->Size
- 1);
671 // Run the relocation information and apply the fixups
673 FixupData
= ImageContext
->FixupData
;
674 while (RelocBase
< RelocBaseEnd
) {
676 Reloc
= (UINT16
*) ((CHAR8
*) RelocBase
+ sizeof (EFI_IMAGE_BASE_RELOCATION
));
677 RelocEnd
= (UINT16
*) ((CHAR8
*) RelocBase
+ RelocBase
->SizeOfBlock
);
678 if (!(ImageContext
->IsTeImage
)) {
679 FixupBase
= PeCoffLoaderImageAddress (ImageContext
, RelocBase
->VirtualAddress
);
681 FixupBase
= (CHAR8
*)(UINTN
)(ImageContext
->ImageAddress
+
682 RelocBase
->VirtualAddress
+
683 sizeof(EFI_TE_IMAGE_HEADER
) -
688 if ((CHAR8
*) RelocEnd
< (CHAR8
*) ((UINTN
) ImageContext
->ImageAddress
) ||
689 (CHAR8
*) RelocEnd
> (CHAR8
*)((UINTN
)ImageContext
->ImageAddress
+
690 (UINTN
)ImageContext
->ImageSize
)) {
691 ImageContext
->ImageError
= IMAGE_ERROR_FAILED_RELOCATION
;
692 return RETURN_LOAD_ERROR
;
696 // Run this relocation record
698 while (Reloc
< RelocEnd
) {
700 Fixup
= FixupBase
+ (*Reloc
& 0xFFF);
701 switch ((*Reloc
) >> 12) {
702 case EFI_IMAGE_REL_BASED_ABSOLUTE
:
705 case EFI_IMAGE_REL_BASED_HIGH
:
706 F16
= (UINT16
*) Fixup
;
707 *F16
= (UINT16
) (*F16
+ ((UINT16
) ((UINT32
) Adjust
>> 16)));
708 if (FixupData
!= NULL
) {
709 *(UINT16
*) FixupData
= *F16
;
710 FixupData
= FixupData
+ sizeof (UINT16
);
714 case EFI_IMAGE_REL_BASED_LOW
:
715 F16
= (UINT16
*) Fixup
;
716 *F16
= (UINT16
) (*F16
+ (UINT16
) Adjust
);
717 if (FixupData
!= NULL
) {
718 *(UINT16
*) FixupData
= *F16
;
719 FixupData
= FixupData
+ sizeof (UINT16
);
723 case EFI_IMAGE_REL_BASED_HIGHLOW
:
724 F32
= (UINT32
*) Fixup
;
725 *F32
= *F32
+ (UINT32
) Adjust
;
726 if (FixupData
!= NULL
) {
727 FixupData
= ALIGN_POINTER (FixupData
, sizeof (UINT32
));
728 *(UINT32
*)FixupData
= *F32
;
729 FixupData
= FixupData
+ sizeof (UINT32
);
733 case EFI_IMAGE_REL_BASED_DIR64
:
734 F64
= (UINT64
*) Fixup
;
735 *F64
= *F64
+ (UINT64
) Adjust
;
736 if (FixupData
!= NULL
) {
737 FixupData
= ALIGN_POINTER (FixupData
, sizeof(UINT64
));
738 *(UINT64
*)(FixupData
) = *F64
;
739 FixupData
= FixupData
+ sizeof(UINT64
);
745 // The common code does not handle some of the stranger IPF relocations
746 // PeCoffLoaderRelocateImageEx () addes support for these complex fixups
747 // on IPF and is a No-Op on other archtiectures.
749 Status
= PeCoffLoaderRelocateImageEx (Reloc
, Fixup
, &FixupData
, Adjust
);
750 if (RETURN_ERROR (Status
)) {
751 ImageContext
->ImageError
= IMAGE_ERROR_FAILED_RELOCATION
;
757 // Next relocation record
765 RelocBase
= (EFI_IMAGE_BASE_RELOCATION
*) RelocEnd
;
768 return RETURN_SUCCESS
;
772 Loads a PE/COFF image into memory.
774 Loads the PE/COFF image accessed through the ImageRead service of ImageContext into the buffer
775 specified by the ImageAddress and ImageSize fields of ImageContext. The caller must allocate
776 the load buffer and fill in the ImageAddress and ImageSize fields prior to calling this function.
777 The EntryPoint, FixupDataSize, CodeView, and PdbPointer fields of ImageContext are computed.
778 If ImageContext is NULL, then ASSERT().
780 @param ImageContext Pointer to the image context structure that describes the PE/COFF
781 image that is being loaded.
783 @retval RETURN_SUCCESS The PE/COFF image was loaded into the buffer specified by
784 the ImageAddress and ImageSize fields of ImageContext.
785 Extended status information is in the ImageError field of ImageContext.
786 @retval RETURN_BUFFER_TOO_SMALL The caller did not provide a large enough buffer.
787 Extended status information is in the ImageError field of ImageContext.
788 @retval RETURN_LOAD_ERROR The PE/COFF image is an EFI Runtime image with no relocations.
789 Extended status information is in the ImageError field of ImageContext.
790 @retval RETURN_INVALID_PARAMETER The image address is invalid.
791 Extended status information is in the ImageError field of ImageContext.
796 PeCoffLoaderLoadImage (
797 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT
*ImageContext
800 RETURN_STATUS Status
;
801 EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
;
802 PE_COFF_LOADER_IMAGE_CONTEXT CheckContext
;
803 EFI_IMAGE_SECTION_HEADER
*FirstSection
;
804 EFI_IMAGE_SECTION_HEADER
*Section
;
805 UINTN NumberOfSections
;
810 EFI_IMAGE_DATA_DIRECTORY
*DirectoryEntry
;
811 EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
*DebugEntry
;
813 UINT32 TempDebugEntryRva
;
814 UINT32 NumberOfRvaAndSizes
;
817 ASSERT (ImageContext
!= NULL
);
822 ImageContext
->ImageError
= IMAGE_ERROR_SUCCESS
;
825 // Copy the provided context info into our local version, get what we
826 // can from the original image, and then use that to make sure everything
829 CopyMem (&CheckContext
, ImageContext
, sizeof (PE_COFF_LOADER_IMAGE_CONTEXT
));
831 Status
= PeCoffLoaderGetImageInfo (&CheckContext
);
832 if (RETURN_ERROR (Status
)) {
837 // Make sure there is enough allocated space for the image being loaded
839 if (ImageContext
->ImageSize
< CheckContext
.ImageSize
) {
840 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_IMAGE_SIZE
;
841 return RETURN_BUFFER_TOO_SMALL
;
843 if (ImageContext
->ImageAddress
== 0) {
845 // Image cannot be loaded into 0 address.
847 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_IMAGE_ADDRESS
;
848 return RETURN_INVALID_PARAMETER
;
851 // If there's no relocations, then make sure it's not a runtime driver,
852 // and that it's being loaded at the linked address.
854 if (CheckContext
.RelocationsStripped
) {
856 // If the image does not contain relocations and it is a runtime driver
857 // then return an error.
859 if (CheckContext
.ImageType
== EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER
) {
860 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_SUBSYSTEM
;
861 return RETURN_LOAD_ERROR
;
864 // If the image does not contain relocations, and the requested load address
865 // is not the linked address, then return an error.
867 if (CheckContext
.ImageAddress
!= ImageContext
->ImageAddress
) {
868 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_IMAGE_ADDRESS
;
869 return RETURN_INVALID_PARAMETER
;
873 // Make sure the allocated space has the proper section alignment
875 if (!(ImageContext
->IsTeImage
)) {
876 if ((ImageContext
->ImageAddress
& (CheckContext
.SectionAlignment
- 1)) != 0) {
877 ImageContext
->ImageError
= IMAGE_ERROR_INVALID_SECTION_ALIGNMENT
;
878 return RETURN_INVALID_PARAMETER
;
882 // Read the entire PE/COFF or TE header into memory
884 if (!(ImageContext
->IsTeImage
)) {
885 Status
= ImageContext
->ImageRead (
886 ImageContext
->Handle
,
888 &ImageContext
->SizeOfHeaders
,
889 (VOID
*) (UINTN
) ImageContext
->ImageAddress
892 Hdr
.Pe32
= (EFI_IMAGE_NT_HEADERS32
*)((UINTN
)ImageContext
->ImageAddress
+ ImageContext
->PeCoffHeaderOffset
);
894 FirstSection
= (EFI_IMAGE_SECTION_HEADER
*) (
895 (UINTN
)ImageContext
->ImageAddress
+
896 ImageContext
->PeCoffHeaderOffset
+
898 sizeof(EFI_IMAGE_FILE_HEADER
) +
899 Hdr
.Pe32
->FileHeader
.SizeOfOptionalHeader
901 NumberOfSections
= (UINTN
) (Hdr
.Pe32
->FileHeader
.NumberOfSections
);
903 Status
= ImageContext
->ImageRead (
904 ImageContext
->Handle
,
906 &ImageContext
->SizeOfHeaders
,
907 (void *)(UINTN
)ImageContext
->ImageAddress
910 Hdr
.Te
= (EFI_TE_IMAGE_HEADER
*)(UINTN
)(ImageContext
->ImageAddress
);
912 FirstSection
= (EFI_IMAGE_SECTION_HEADER
*) (
913 (UINTN
)ImageContext
->ImageAddress
+
914 sizeof(EFI_TE_IMAGE_HEADER
)
916 NumberOfSections
= (UINTN
) (Hdr
.Te
->NumberOfSections
);
920 if (RETURN_ERROR (Status
)) {
921 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
922 return RETURN_LOAD_ERROR
;
926 // Load each section of the image
928 Section
= FirstSection
;
929 for (Index
= 0, MaxEnd
= NULL
; Index
< NumberOfSections
; Index
++) {
932 // Compute sections address
934 Base
= PeCoffLoaderImageAddress (ImageContext
, Section
->VirtualAddress
);
935 End
= PeCoffLoaderImageAddress (
937 Section
->VirtualAddress
+ Section
->Misc
.VirtualSize
- 1
939 if (ImageContext
->IsTeImage
) {
940 Base
= (CHAR8
*)((UINTN
) Base
+ sizeof (EFI_TE_IMAGE_HEADER
) - (UINTN
)Hdr
.Te
->StrippedSize
);
941 End
= (CHAR8
*)((UINTN
) End
+ sizeof (EFI_TE_IMAGE_HEADER
) - (UINTN
)Hdr
.Te
->StrippedSize
);
948 // If the base start or end address resolved to 0, then fail.
950 if ((Base
== NULL
) || (End
== NULL
)) {
951 ImageContext
->ImageError
= IMAGE_ERROR_SECTION_NOT_LOADED
;
952 return RETURN_LOAD_ERROR
;
958 Size
= (UINTN
) Section
->Misc
.VirtualSize
;
959 if ((Size
== 0) || (Size
> Section
->SizeOfRawData
)) {
960 Size
= (UINTN
) Section
->SizeOfRawData
;
963 if (Section
->SizeOfRawData
) {
964 if (!(ImageContext
->IsTeImage
)) {
965 Status
= ImageContext
->ImageRead (
966 ImageContext
->Handle
,
967 Section
->PointerToRawData
,
972 Status
= ImageContext
->ImageRead (
973 ImageContext
->Handle
,
974 Section
->PointerToRawData
+ sizeof (EFI_TE_IMAGE_HEADER
) - (UINTN
)Hdr
.Te
->StrippedSize
,
980 if (RETURN_ERROR (Status
)) {
981 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
987 // If raw size is less then virt size, zero fill the remaining
990 if (Size
< Section
->Misc
.VirtualSize
) {
991 ZeroMem (Base
+ Size
, Section
->Misc
.VirtualSize
- Size
);
1001 // Get image's entry point
1003 Magic
= PeCoffLoaderGetPeHeaderMagicValue (Hdr
);
1004 if (!(ImageContext
->IsTeImage
)) {
1006 // Sizes of AddressOfEntryPoint are different so we need to do this safely
1008 if (Magic
== EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
) {
1012 ImageContext
->EntryPoint
= (PHYSICAL_ADDRESS
)(UINTN
)PeCoffLoaderImageAddress (
1014 (UINTN
)Hdr
.Pe32
->OptionalHeader
.AddressOfEntryPoint
1020 ImageContext
->EntryPoint
= (PHYSICAL_ADDRESS
)(UINTN
)PeCoffLoaderImageAddress (
1022 (UINTN
)Hdr
.Pe32Plus
->OptionalHeader
.AddressOfEntryPoint
1026 ImageContext
->EntryPoint
= (PHYSICAL_ADDRESS
) (
1027 (UINTN
)ImageContext
->ImageAddress
+
1028 (UINTN
)Hdr
.Te
->AddressOfEntryPoint
+
1029 (UINTN
)sizeof(EFI_TE_IMAGE_HEADER
) -
1030 (UINTN
)Hdr
.Te
->StrippedSize
1035 // Determine the size of the fixup data
1037 // Per the PE/COFF spec, you can't assume that a given data directory
1038 // is present in the image. You have to check the NumberOfRvaAndSizes in
1039 // the optional header to verify a desired directory entry is there.
1041 if (!(ImageContext
->IsTeImage
)) {
1042 if (Magic
== EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
) {
1046 NumberOfRvaAndSizes
= Hdr
.Pe32
->OptionalHeader
.NumberOfRvaAndSizes
;
1047 DirectoryEntry
= (EFI_IMAGE_DATA_DIRECTORY
*)&Hdr
.Pe32
->OptionalHeader
.DataDirectory
[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
];
1052 NumberOfRvaAndSizes
= Hdr
.Pe32Plus
->OptionalHeader
.NumberOfRvaAndSizes
;
1053 DirectoryEntry
= (EFI_IMAGE_DATA_DIRECTORY
*)&Hdr
.Pe32Plus
->OptionalHeader
.DataDirectory
[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
];
1056 if (NumberOfRvaAndSizes
> EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
) {
1057 ImageContext
->FixupDataSize
= DirectoryEntry
->Size
/ sizeof (UINT16
) * sizeof (UINTN
);
1059 ImageContext
->FixupDataSize
= 0;
1062 DirectoryEntry
= &Hdr
.Te
->DataDirectory
[0];
1063 ImageContext
->FixupDataSize
= DirectoryEntry
->Size
/ sizeof (UINT16
) * sizeof (UINTN
);
1066 // Consumer must allocate a buffer for the relocation fixup log.
1067 // Only used for runtime drivers.
1069 ImageContext
->FixupData
= NULL
;
1072 // Load the Codeview info if present
1074 if (ImageContext
->DebugDirectoryEntryRva
!= 0) {
1075 if (!(ImageContext
->IsTeImage
)) {
1076 DebugEntry
= PeCoffLoaderImageAddress (
1078 ImageContext
->DebugDirectoryEntryRva
1081 DebugEntry
= (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
*)(UINTN
)(
1082 ImageContext
->ImageAddress
+
1083 ImageContext
->DebugDirectoryEntryRva
+
1084 sizeof(EFI_TE_IMAGE_HEADER
) -
1085 Hdr
.Te
->StrippedSize
1089 if (DebugEntry
!= NULL
) {
1090 TempDebugEntryRva
= DebugEntry
->RVA
;
1091 if (DebugEntry
->RVA
== 0 && DebugEntry
->FileOffset
!= 0) {
1093 if ((UINTN
)Section
->SizeOfRawData
< Section
->Misc
.VirtualSize
) {
1094 TempDebugEntryRva
= Section
->VirtualAddress
+ Section
->Misc
.VirtualSize
;
1096 TempDebugEntryRva
= Section
->VirtualAddress
+ Section
->SizeOfRawData
;
1100 if (TempDebugEntryRva
!= 0) {
1101 if (!(ImageContext
->IsTeImage
)) {
1102 ImageContext
->CodeView
= PeCoffLoaderImageAddress (ImageContext
, TempDebugEntryRva
);
1104 ImageContext
->CodeView
= (VOID
*)(
1105 (UINTN
)ImageContext
->ImageAddress
+
1106 (UINTN
)TempDebugEntryRva
+
1107 (UINTN
)sizeof (EFI_TE_IMAGE_HEADER
) -
1108 (UINTN
) Hdr
.Te
->StrippedSize
1112 if (ImageContext
->CodeView
== NULL
) {
1113 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
1114 return RETURN_LOAD_ERROR
;
1117 if (DebugEntry
->RVA
== 0) {
1118 Size
= DebugEntry
->SizeOfData
;
1119 if (!(ImageContext
->IsTeImage
)) {
1120 Status
= ImageContext
->ImageRead (
1121 ImageContext
->Handle
,
1122 DebugEntry
->FileOffset
,
1124 ImageContext
->CodeView
1127 Status
= ImageContext
->ImageRead (
1128 ImageContext
->Handle
,
1129 DebugEntry
->FileOffset
+ sizeof (EFI_TE_IMAGE_HEADER
) - Hdr
.Te
->StrippedSize
,
1131 ImageContext
->CodeView
1134 // Should we apply fix up to this field according to the size difference between PE and TE?
1135 // Because now we maintain TE header fields unfixed, this field will also remain as they are
1136 // in original PE image.
1140 if (RETURN_ERROR (Status
)) {
1141 ImageContext
->ImageError
= IMAGE_ERROR_IMAGE_READ
;
1142 return RETURN_LOAD_ERROR
;
1145 DebugEntry
->RVA
= TempDebugEntryRva
;
1148 switch (*(UINT32
*) ImageContext
->CodeView
) {
1149 case CODEVIEW_SIGNATURE_NB10
:
1150 ImageContext
->PdbPointer
= (CHAR8
*)ImageContext
->CodeView
+ sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY
);
1153 case CODEVIEW_SIGNATURE_RSDS
:
1154 ImageContext
->PdbPointer
= (CHAR8
*)ImageContext
->CodeView
+ sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY
);
1169 Reapply fixups on a fixed up PE32/PE32+ image to allow virutal calling at EFI
1172 PE_COFF_LOADER_IMAGE_CONTEXT.FixupData stores information needed to reapply
1173 the fixups with a virtual mapping.
1176 @param ImageBase Base address of relocated image
1177 @param VirtImageBase Virtual mapping for ImageBase
1178 @param ImageSize Size of the image to relocate
1179 @param RelocationData Location to place results of read
1184 PeCoffLoaderRelocateImageForRuntime (
1185 IN PHYSICAL_ADDRESS ImageBase
,
1186 IN PHYSICAL_ADDRESS VirtImageBase
,
1188 IN VOID
*RelocationData
1193 EFI_IMAGE_DOS_HEADER
*DosHdr
;
1194 EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
;
1195 UINT32 NumberOfRvaAndSizes
;
1196 EFI_IMAGE_DATA_DIRECTORY
*DataDirectory
;
1197 EFI_IMAGE_DATA_DIRECTORY
*RelocDir
;
1198 EFI_IMAGE_BASE_RELOCATION
*RelocBase
;
1199 EFI_IMAGE_BASE_RELOCATION
*RelocBaseEnd
;
1209 RETURN_STATUS Status
;
1212 OldBase
= (CHAR8
*)((UINTN
)ImageBase
);
1213 NewBase
= (CHAR8
*)((UINTN
)VirtImageBase
);
1214 Adjust
= (UINTN
) NewBase
- (UINTN
) OldBase
;
1217 // Find the image's relocate dir info
1219 DosHdr
= (EFI_IMAGE_DOS_HEADER
*)OldBase
;
1220 if (DosHdr
->e_magic
== EFI_IMAGE_DOS_SIGNATURE
) {
1222 // Valid DOS header so get address of PE header
1224 Hdr
.Pe32
= (EFI_IMAGE_NT_HEADERS32
*)(((CHAR8
*)DosHdr
) + DosHdr
->e_lfanew
);
1227 // No Dos header so assume image starts with PE header.
1229 Hdr
.Pe32
= (EFI_IMAGE_NT_HEADERS32
*)OldBase
;
1232 if (Hdr
.Pe32
->Signature
!= EFI_IMAGE_NT_SIGNATURE
) {
1234 // Not a valid PE image so Exit
1239 Magic
= PeCoffLoaderGetPeHeaderMagicValue (Hdr
);
1241 if (Magic
== EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
) {
1245 NumberOfRvaAndSizes
= Hdr
.Pe32
->OptionalHeader
.NumberOfRvaAndSizes
;
1246 DataDirectory
= (EFI_IMAGE_DATA_DIRECTORY
*)&(Hdr
.Pe32
->OptionalHeader
.DataDirectory
[0]);
1251 NumberOfRvaAndSizes
= Hdr
.Pe32Plus
->OptionalHeader
.NumberOfRvaAndSizes
;
1252 DataDirectory
= (EFI_IMAGE_DATA_DIRECTORY
*)&(Hdr
.Pe32Plus
->OptionalHeader
.DataDirectory
[0]);
1256 // Find the relocation block
1258 // Per the PE/COFF spec, you can't assume that a given data directory
1259 // is present in the image. You have to check the NumberOfRvaAndSizes in
1260 // the optional header to verify a desired directory entry is there.
1262 if (NumberOfRvaAndSizes
> EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
) {
1263 RelocDir
= DataDirectory
+ EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC
;
1264 RelocBase
= (EFI_IMAGE_BASE_RELOCATION
*)(UINTN
)(ImageBase
+ RelocDir
->VirtualAddress
);
1265 RelocBaseEnd
= (EFI_IMAGE_BASE_RELOCATION
*)(UINTN
)(ImageBase
+ RelocDir
->VirtualAddress
+ RelocDir
->Size
);
1268 // Cannot find relocations, cannot continue
1274 ASSERT (RelocBase
!= NULL
&& RelocBaseEnd
!= NULL
);
1277 // Run the whole relocation block. And re-fixup data that has not been
1278 // modified. The FixupData is used to see if the image has been modified
1279 // since it was relocated. This is so data sections that have been updated
1280 // by code will not be fixed up, since that would set them back to
1283 FixupData
= RelocationData
;
1284 while (RelocBase
< RelocBaseEnd
) {
1286 Reloc
= (UINT16
*) ((UINT8
*) RelocBase
+ sizeof (EFI_IMAGE_BASE_RELOCATION
));
1287 RelocEnd
= (UINT16
*) ((UINT8
*) RelocBase
+ RelocBase
->SizeOfBlock
);
1288 FixupBase
= (CHAR8
*) ((UINTN
)ImageBase
) + RelocBase
->VirtualAddress
;
1291 // Run this relocation record
1293 while (Reloc
< RelocEnd
) {
1295 Fixup
= FixupBase
+ (*Reloc
& 0xFFF);
1296 switch ((*Reloc
) >> 12) {
1298 case EFI_IMAGE_REL_BASED_ABSOLUTE
:
1301 case EFI_IMAGE_REL_BASED_HIGH
:
1302 F16
= (UINT16
*) Fixup
;
1303 if (*(UINT16
*) FixupData
== *F16
) {
1304 *F16
= (UINT16
) (*F16
+ ((UINT16
) ((UINT32
) Adjust
>> 16)));
1307 FixupData
= FixupData
+ sizeof (UINT16
);
1310 case EFI_IMAGE_REL_BASED_LOW
:
1311 F16
= (UINT16
*) Fixup
;
1312 if (*(UINT16
*) FixupData
== *F16
) {
1313 *F16
= (UINT16
) (*F16
+ ((UINT16
) Adjust
& 0xffff));
1316 FixupData
= FixupData
+ sizeof (UINT16
);
1319 case EFI_IMAGE_REL_BASED_HIGHLOW
:
1320 F32
= (UINT32
*) Fixup
;
1321 FixupData
= ALIGN_POINTER (FixupData
, sizeof (UINT32
));
1322 if (*(UINT32
*) FixupData
== *F32
) {
1323 *F32
= *F32
+ (UINT32
) Adjust
;
1326 FixupData
= FixupData
+ sizeof (UINT32
);
1329 case EFI_IMAGE_REL_BASED_DIR64
:
1330 F64
= (UINT64
*)Fixup
;
1331 FixupData
= ALIGN_POINTER (FixupData
, sizeof (UINT64
));
1332 if (*(UINT64
*) FixupData
== *F64
) {
1333 *F64
= *F64
+ (UINT64
)Adjust
;
1336 FixupData
= FixupData
+ sizeof (UINT64
);
1339 case EFI_IMAGE_REL_BASED_HIGHADJ
:
1341 // Not implemented, but not used in EFI 1.0
1348 // Only Itanium requires ConvertPeImage_Ex
1350 Status
= PeHotRelocateImageEx (Reloc
, Fixup
, &FixupData
, Adjust
);
1351 if (RETURN_ERROR (Status
)) {
1356 // Next relocation record
1363 RelocBase
= (EFI_IMAGE_BASE_RELOCATION
*) RelocEnd
;
1369 ImageRead function that operates on a memory buffer whos base is passed into
1372 @param FileHandle Ponter to baes of the input stream
1373 @param FileOffset Offset to the start of the buffer
1374 @param ReadSize Number of bytes to copy into the buffer
1375 @param Buffer Location to place results of read
1377 @retval RETURN_SUCCESS Data is read from FileOffset from the Handle into
1382 PeCoffLoaderImageReadFromMemory (
1383 IN VOID
*FileHandle
,
1384 IN UINTN FileOffset
,
1385 IN OUT UINTN
*ReadSize
,
1389 CopyMem (Buffer
, ((UINT8
*)FileHandle
) + FileOffset
, *ReadSize
);
1390 return RETURN_SUCCESS
;