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804405e7 | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006 - 2008, Intel Corporation\r | |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | PeCoffGetEntryPoint.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Tiano PE/COFF loader\r | |
19 | \r | |
20 | Revision History\r | |
21 | \r | |
22 | --*/\r | |
23 | #include "PiPei.h"\r | |
24 | #include <Library/PeCoffGetEntryPointLib.h>\r | |
25 | #include <Library/PeiServicesLib.h>\r | |
26 | #include <Ppi/UnixPeiLoadFile.h>\r | |
27 | #include <IndustryStandard/PeImage.h>\r | |
28 | #include <Library/DebugLib.h>\r | |
29 | \r | |
30 | RETURN_STATUS\r | |
31 | EFIAPI\r | |
32 | PeCoffLoaderGetEntryPoint (\r | |
33 | IN VOID *Pe32Data,\r | |
34 | IN OUT VOID **EntryPoint\r | |
35 | )\r | |
36 | /*++\r | |
37 | \r | |
38 | Routine Description:\r | |
39 | \r | |
40 | Loads a PE/COFF image into memory, this is not follow the original purpose of \r | |
41 | PeCoffGetEntryPoint library class. But it's ok that Unix package not run on a real \r | |
42 | platform and this is for source level debug.\r | |
43 | \r | |
44 | Arguments:\r | |
45 | \r | |
46 | Pe32Data - Pointer to a PE/COFF Image\r | |
47 | \r | |
48 | EntryPoint - Pointer to the entry point of the PE/COFF image\r | |
49 | \r | |
50 | Returns:\r | |
51 | \r | |
52 | EFI_SUCCESS if the EntryPoint was returned\r | |
53 | EFI_INVALID_PARAMETER if the EntryPoint could not be found from Pe32Data\r | |
54 | \r | |
55 | --*/\r | |
56 | {\r | |
57 | EFI_STATUS Status;\r | |
58 | EFI_PEI_PPI_DESCRIPTOR *PpiDescriptor;\r | |
59 | UNIX_PEI_LOAD_FILE_PPI *PeiUnixService;\r | |
60 | EFI_PHYSICAL_ADDRESS ImageAddress;\r | |
61 | UINT64 ImageSize;\r | |
62 | EFI_PHYSICAL_ADDRESS ImageEntryPoint;\r | |
63 | \r | |
64 | ASSERT (Pe32Data != NULL);\r | |
65 | ASSERT (EntryPoint != NULL);\r | |
66 | \r | |
67 | Status = PeiServicesLocatePpi (\r | |
68 | &gUnixPeiLoadFilePpiGuid,\r | |
69 | 0,\r | |
70 | &PpiDescriptor,\r | |
71 | (void **)&PeiUnixService\r | |
72 | );\r | |
73 | \r | |
74 | ASSERT_EFI_ERROR (Status);\r | |
75 | \r | |
76 | Status = PeiUnixService->PeiLoadFileService (\r | |
77 | Pe32Data,\r | |
78 | &ImageAddress,\r | |
79 | &ImageSize,\r | |
80 | &ImageEntryPoint\r | |
81 | );\r | |
82 | \r | |
83 | if (EFI_ERROR (Status)) {\r | |
84 | return Status;\r | |
85 | }\r | |
86 | \r | |
87 | *EntryPoint = (VOID*)(UINTN)ImageEntryPoint;\r | |
88 | return Status;\r | |
89 | }\r | |
90 | \r | |
91 | /**\r | |
92 | Returns the machine type of PE/COFF image. \r | |
93 | This is copied from MDE BasePeCoffGetEntryPointLib, the code should be sync with it.\r | |
94 | The reason is Unix package needs to load the image to memory to support source\r | |
95 | level debug.\r | |
96 | \r | |
97 | \r | |
98 | @param Pe32Data Pointer to a PE/COFF header\r | |
99 | \r | |
100 | @return Machine type or zero if not a valid iamge\r | |
101 | \r | |
102 | **/\r | |
103 | UINT16\r | |
104 | EFIAPI\r | |
105 | PeCoffLoaderGetMachineType (\r | |
106 | IN VOID *Pe32Data\r | |
107 | )\r | |
108 | { \r | |
109 | EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\r | |
110 | EFI_IMAGE_DOS_HEADER *DosHdr;\r | |
111 | \r | |
112 | ASSERT (Pe32Data != NULL);\r | |
113 | \r | |
114 | DosHdr = (EFI_IMAGE_DOS_HEADER *)Pe32Data;\r | |
115 | if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r | |
116 | Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHdr->e_lfanew) & 0x0ffff));\r | |
117 | \r | |
118 | } else {\r | |
119 | Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)(Pe32Data);\r | |
120 | }\r | |
121 | \r | |
122 | if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {\r | |
123 | return Hdr.Te->Machine;\r | |
124 | } else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {\r | |
125 | return Hdr.Pe32->FileHeader.Machine;\r | |
126 | }\r | |
127 | \r | |
128 | return 0x0000;\r | |
129 | }\r | |
130 | \r | |
131 | /**\r | |
132 | Returns a pointer to the PDB file name for a PE/COFF image that has been\r | |
133 | loaded into system memory with the PE/COFF Loader Library functions.\r | |
134 | \r | |
135 | Returns the PDB file name for the PE/COFF image specified by Pe32Data. If\r | |
136 | the PE/COFF image specified by Pe32Data is not a valid, then NULL is\r | |
137 | returned. If the PE/COFF image specified by Pe32Data does not contain a\r | |
138 | debug directory entry, then NULL is returned. If the debug directory entry\r | |
139 | in the PE/COFF image specified by Pe32Data does not contain a PDB file name,\r | |
140 | then NULL is returned.\r | |
141 | If Pe32Data is NULL, then ASSERT().\r | |
142 | \r | |
143 | @param Pe32Data Pointer to the PE/COFF image that is loaded in system\r | |
144 | memory.\r | |
145 | \r | |
146 | @return The PDB file name for the PE/COFF image specified by Pe32Data or NULL\r | |
147 | if it cannot be retrieved.\r | |
148 | \r | |
149 | **/\r | |
150 | VOID *\r | |
151 | EFIAPI\r | |
152 | PeCoffLoaderGetPdbPointer (\r | |
153 | IN VOID *Pe32Data\r | |
154 | )\r | |
155 | {\r | |
156 | EFI_IMAGE_DOS_HEADER *DosHdr;\r | |
157 | EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\r | |
158 | EFI_IMAGE_DATA_DIRECTORY *DirectoryEntry;\r | |
159 | EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *DebugEntry;\r | |
160 | UINTN DirCount;\r | |
161 | VOID *CodeViewEntryPointer;\r | |
162 | INTN TEImageAdjust;\r | |
163 | UINT32 NumberOfRvaAndSizes;\r | |
164 | UINT16 Magic;\r | |
165 | \r | |
166 | ASSERT (Pe32Data != NULL);\r | |
167 | \r | |
168 | TEImageAdjust = 0;\r | |
169 | DirectoryEntry = NULL;\r | |
170 | DebugEntry = NULL;\r | |
171 | NumberOfRvaAndSizes = 0;\r | |
172 | \r | |
173 | DosHdr = (EFI_IMAGE_DOS_HEADER *)Pe32Data;\r | |
174 | if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r | |
175 | //\r | |
176 | // DOS image header is present, so read the PE header after the DOS image header.\r | |
177 | //\r | |
178 | Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHdr->e_lfanew) & 0x0ffff));\r | |
179 | } else {\r | |
180 | //\r | |
181 | // DOS image header is not present, so PE header is at the image base.\r | |
182 | //\r | |
183 | Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;\r | |
184 | }\r | |
185 | \r | |
186 | if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {\r | |
187 | if (Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress != 0) {\r | |
188 | DirectoryEntry = &Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG];\r | |
189 | TEImageAdjust = sizeof (EFI_TE_IMAGE_HEADER) - Hdr.Te->StrippedSize;\r | |
190 | DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *)((UINTN) Hdr.Te +\r | |
191 | Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress +\r | |
192 | TEImageAdjust);\r | |
193 | }\r | |
194 | } else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {\r | |
195 | //\r | |
196 | // NOTE: We use Machine field to identify PE32/PE32+, instead of Magic.\r | |
197 | // It is due to backward-compatibility, for some system might\r | |
198 | // generate PE32+ image with PE32 Magic.\r | |
199 | //\r | |
200 | switch (Hdr.Pe32->FileHeader.Machine) {\r | |
201 | case EFI_IMAGE_MACHINE_IA32:\r | |
202 | //\r | |
203 | // Assume PE32 image with IA32 Machine field.\r | |
204 | //\r | |
205 | Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;\r | |
206 | break;\r | |
207 | case EFI_IMAGE_MACHINE_X64:\r | |
e54ce904 | 208 | case EFI_IMAGE_MACHINE_IA64:\r |
804405e7 | 209 | //\r |
e54ce904 | 210 | // Assume PE32+ image with X64 or IA64 Machine field\r |
804405e7 | 211 | //\r |
212 | Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;\r | |
213 | break;\r | |
214 | default:\r | |
215 | //\r | |
216 | // For unknow Machine field, use Magic in optional Header\r | |
217 | //\r | |
218 | Magic = Hdr.Pe32->OptionalHeader.Magic;\r | |
219 | }\r | |
220 | \r | |
221 | if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {\r | |
222 | //\r | |
223 | // Use PE32 offset get Debug Directory Entry\r | |
224 | //\r | |
225 | NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;\r | |
226 | DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);\r | |
227 | DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);\r | |
228 | } else if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC) {\r | |
229 | //\r | |
230 | // Use PE32+ offset get Debug Directory Entry\r | |
231 | //\r | |
232 | NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;\r | |
233 | DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);\r | |
234 | DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);\r | |
235 | }\r | |
236 | \r | |
237 | if (NumberOfRvaAndSizes <= EFI_IMAGE_DIRECTORY_ENTRY_DEBUG) {\r | |
238 | DirectoryEntry = NULL;\r | |
239 | DebugEntry = NULL;\r | |
240 | }\r | |
241 | } else {\r | |
242 | return NULL;\r | |
243 | }\r | |
244 | \r | |
245 | if (DebugEntry == NULL || DirectoryEntry == NULL) {\r | |
246 | return NULL;\r | |
247 | }\r | |
248 | \r | |
249 | for (DirCount = 0; DirCount < DirectoryEntry->Size; DirCount += sizeof (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY), DebugEntry++) {\r | |
250 | if (DebugEntry->Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {\r | |
251 | if (DebugEntry->SizeOfData > 0) {\r | |
252 | CodeViewEntryPointer = (VOID *) ((UINTN) DebugEntry->RVA + ((UINTN)Pe32Data) + (UINTN)TEImageAdjust);\r | |
253 | switch (* (UINT32 *) CodeViewEntryPointer) {\r | |
254 | case CODEVIEW_SIGNATURE_NB10:\r | |
255 | return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY));\r | |
256 | case CODEVIEW_SIGNATURE_RSDS:\r | |
257 | return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY));\r | |
258 | default:\r | |
259 | break;\r | |
260 | }\r | |
261 | }\r | |
262 | }\r | |
263 | }\r | |
264 | \r | |
265 | return NULL;\r | |
266 | }\r |