1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
/**@file
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
PeiNt32PeCoffLib.c
Abstract:
Wrap the Nt32 PE/COFF loader with the PE COFF LOADER guid structure
to produce PeCoff library class.
**/
#include <PiPei.h>
#include <Guid/PeiPeCoffLoader.h>
#include <Library/DebugLib.h>
#include <Library/PeCoffLib.h>
#include <Library/HobLib.h>
EFI_PEI_PE_COFF_LOADER_PROTOCOL *mPeiEfiPeiPeCoffLoader;
/**
The constructor function caches the pointer of PeCofferLoader guid structure
into the guid data hob.
The constructor must be called after PeCofferLoader guid structure is installed.
It will ASSERT() if PeCofferLoader guid structure is not installed.
@param FileHandle Handle of the file being invoked.
@param PeiServices Describes the list of possible PEI Services.
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
**/
EFI_STATUS
EFIAPI
PeiNt32PeCoffLibConstructor (
IN EFI_PEI_FILE_HANDLE FileHandle,
IN CONST EFI_PEI_SERVICES **PeiServices
)
{
EFI_STATUS Status;
EFI_HOB_GUID_TYPE *GuidHob;
Status = EFI_NOT_FOUND;
//
// Try to get guid data hob that contains PeCoffLoader guid structure.
//
GuidHob = GetFirstGuidHob (&gEfiPeiPeCoffLoaderGuid);
if (GuidHob == NULL) {
//
// GuidHob is not ready, try to locate PeCoffLoader guid structure.
//
Status = (*PeiServices)->LocatePpi (
PeiServices,
&gEfiPeiPeCoffLoaderGuid,
0,
NULL,
(VOID**)&mPeiEfiPeiPeCoffLoader
);
//
// PeCofferLoader guid structure must be installed before this library runs.
//
ASSERT_EFI_ERROR (Status);
//
// Build guid data hob of PeCofferLoader guid structure for DXE module use.
//
BuildGuidDataHob (
&gEfiPeiPeCoffLoaderGuid,
(VOID *) &mPeiEfiPeiPeCoffLoader,
sizeof (VOID *)
);
} else {
//
// Get PeCofferLoader guid structure directly from guid hob data.
//
mPeiEfiPeiPeCoffLoader = (EFI_PEI_PE_COFF_LOADER_PROTOCOL *)(*(UINTN *)(GET_GUID_HOB_DATA (GuidHob)));
}
return EFI_SUCCESS;
}
/**
Retrieves information about a PE/COFF image.
Computes the PeCoffHeaderOffset, ImageAddress, ImageSize, DestinationAddress, CodeView,
PdbPointer, RelocationsStripped, SectionAlignment, SizeOfHeaders, and DebugDirectoryEntryRva
fields of the ImageContext structure. If ImageContext is NULL, then return RETURN_INVALID_PARAMETER.
If the PE/COFF image accessed through the ImageRead service in the ImageContext structure is not
a supported PE/COFF image type, then return RETURN_UNSUPPORTED. If any errors occur while
computing the fields of ImageContext, then the error status is returned in the ImageError field of
ImageContext.
@param ImageContext Pointer to the image context structure that describes the PE/COFF
image that needs to be examined by this function.
@retval RETURN_SUCCESS The information on the PE/COFF image was collected.
@retval RETURN_INVALID_PARAMETER ImageContext is NULL.
@retval RETURN_UNSUPPORTED The PE/COFF image is not supported.
**/
RETURN_STATUS
EFIAPI
PeCoffLoaderGetImageInfo (
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
)
{
return mPeiEfiPeiPeCoffLoader->GetImageInfo (mPeiEfiPeiPeCoffLoader, ImageContext);
}
/**
Applies relocation fixups to a PE/COFF image that was loaded with PeCoffLoaderLoadImage().
If the DestinationAddress field of ImageContext is 0, then use the ImageAddress field of
ImageContext as the relocation base address. Otherwise, use the DestinationAddress field
of ImageContext as the relocation base address. The caller must allocate the relocation
fixup log buffer and fill in the FixupData field of ImageContext prior to calling this function.
If ImageContext is NULL, then ASSERT().
@param ImageContext Pointer to the image context structure that describes the PE/COFF
image that is being relocated.
@retval RETURN_SUCCESS The PE/COFF image was relocated.
Extended status information is in the ImageError field of ImageContext.
@retval RETURN_LOAD_ERROR The image in not a valid PE/COFF image.
Extended status information is in the ImageError field of ImageContext.
@retval RETURN_UNSUPPORTED A relocation record type is not supported.
Extended status information is in the ImageError field of ImageContext.
**/
RETURN_STATUS
EFIAPI
PeCoffLoaderRelocateImage (
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
)
{
return mPeiEfiPeiPeCoffLoader->RelocateImage (mPeiEfiPeiPeCoffLoader, ImageContext);
}
/**
Loads a PE/COFF image into memory.
Loads the PE/COFF image accessed through the ImageRead service of ImageContext into the buffer
specified by the ImageAddress and ImageSize fields of ImageContext. The caller must allocate
the load buffer and fill in the ImageAddress and ImageSize fields prior to calling this function.
The EntryPoint, FixupDataSize, CodeView, and PdbPointer fields of ImageContext are computed.
If ImageContext is NULL, then ASSERT().
@param ImageContext Pointer to the image context structure that describes the PE/COFF
image that is being loaded.
@retval RETURN_SUCCESS The PE/COFF image was loaded into the buffer specified by
the ImageAddress and ImageSize fields of ImageContext.
Extended status information is in the ImageError field of ImageContext.
@retval RETURN_BUFFER_TOO_SMALL The caller did not provide a large enough buffer.
Extended status information is in the ImageError field of ImageContext.
@retval RETURN_LOAD_ERROR The PE/COFF image is an EFI Runtime image with no relocations.
Extended status information is in the ImageError field of ImageContext.
@retval RETURN_INVALID_PARAMETER The image address is invalid.
Extended status information is in the ImageError field of ImageContext.
**/
RETURN_STATUS
EFIAPI
PeCoffLoaderLoadImage (
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
)
{
return mPeiEfiPeiPeCoffLoader->LoadImage (mPeiEfiPeiPeCoffLoader, ImageContext);
}
/**
ImageRead function that operates on a memory buffer whos base is passed into
FileHandle.
@param FileHandle Ponter to baes of the input stream
@param FileOffset Offset to the start of the buffer
@param ReadSize Number of bytes to copy into the buffer
@param Buffer Location to place results of read
@retval RETURN_SUCCESS Data is read from FileOffset from the Handle into
the buffer.
**/
RETURN_STATUS
EFIAPI
PeCoffLoaderImageReadFromMemory (
IN VOID *FileHandle,
IN UINTN FileOffset,
IN OUT UINTN *ReadSize,
OUT VOID *Buffer
)
{
return RETURN_UNSUPPORTED;
}
/**
Reapply fixups on a fixed up PE32/PE32+ image to allow virutal calling at EFI
runtime.
PE_COFF_LOADER_IMAGE_CONTEXT.FixupData stores information needed to reapply
the fixups with a virtual mapping.
@param ImageBase Base address of relocated image
@param VirtImageBase Virtual mapping for ImageBase
@param ImageSize Size of the image to relocate
@param RelocationData Location to place results of read
**/
VOID
EFIAPI
PeCoffLoaderRelocateImageForRuntime (
IN PHYSICAL_ADDRESS ImageBase,
IN PHYSICAL_ADDRESS VirtImageBase,
IN UINTN ImageSize,
IN VOID *RelocationData
)
{
}
/**
Unloads a loaded PE/COFF image from memory and releases its taken resource.
For NT32 emulator, the PE/COFF image loaded by system needs to release.
For real platform, the PE/COFF image loaded by Core doesn't needs to be unloaded,
this function can simply return RETURN_SUCCESS.
@param ImageContext Pointer to the image context structure that describes the PE/COFF
image to be unloaded.
@retval RETURN_SUCCESS The PE/COFF image was unloaded successfully.
**/
RETURN_STATUS
EFIAPI
PeCoffLoaderUnloadImage (
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
)
{
return mPeiEfiPeiPeCoffLoader->UnloadImage (mPeiEfiPeiPeCoffLoader, ImageContext);
}
|
