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878ddf1f | 1 | /** @file\r |
2 | Tiano PE/COFF loader.\r | |
3 | \r | |
4 | Copyright (c) 2006, Intel Corporation<BR>\r | |
5 | All rights reserved. This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | Module Name: PeCoffGetEntryPoint.c\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | \r | |
18 | \r | |
19 | /**\r | |
cd14fe3d | 20 | Retrieves and returns a pointer to the entry point to a PE/COFF image that has been loaded\r |
21 | into system memory with the PE/COFF Loader Library functions.\r | |
878ddf1f | 22 | \r |
cd14fe3d | 23 | Retrieves the entry point to the PE/COFF image specified by Pe32Data and returns this entry\r |
24 | point in EntryPoint. If the entry point could not be retrieved from the PE/COFF image, then\r | |
25 | return RETURN_INVALID_PARAMETER. Otherwise return RETURN_SUCCESS.\r | |
26 | If Pe32Data is NULL, then ASSERT().\r | |
27 | If EntryPoint is NULL, then ASSERT().\r | |
878ddf1f | 28 | \r |
cd14fe3d | 29 | @param Pe32Data Pointer to the PE/COFF image that is loaded in system memory.\r |
30 | @param EntryPoint Pointer to entry point to the PE/COFF image to return.\r | |
31 | \r | |
32 | @retval RETURN_SUCCESS EntryPoint was returned.\r | |
33 | @retval RETURN_INVALID_PARAMETER The entry point could not be found in the PE/COFF image.\r | |
878ddf1f | 34 | \r |
35 | **/\r | |
36 | RETURN_STATUS\r | |
37 | EFIAPI\r | |
38 | PeCoffLoaderGetEntryPoint (\r | |
cd14fe3d | 39 | IN VOID *Pe32Data,\r |
40 | OUT VOID **EntryPoint\r | |
878ddf1f | 41 | )\r |
42 | {\r | |
43 | EFI_IMAGE_DOS_HEADER *DosHeader;\r | |
44 | EFI_IMAGE_NT_HEADERS *PeHeader;\r | |
45 | \r | |
cd14fe3d | 46 | ASSERT (Pe32Data != NULL);\r |
47 | ASSERT (EntryPoint != NULL);\r | |
48 | \r | |
878ddf1f | 49 | DosHeader = (EFI_IMAGE_DOS_HEADER *)Pe32Data;\r |
cd14fe3d | 50 | \r |
878ddf1f | 51 | if (DosHeader->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r |
52 | //\r | |
cd14fe3d | 53 | // DOS image header is present, so read the PE header after the DOS image header.\r |
878ddf1f | 54 | //\r |
55 | PeHeader = (EFI_IMAGE_NT_HEADERS *) ((UINTN) Pe32Data + (UINTN) ((DosHeader->e_lfanew) & 0x0ffff));\r | |
56 | } else {\r | |
57 | //\r | |
cd14fe3d | 58 | // DOS image header is not present, so PE header is at the image base.\r |
878ddf1f | 59 | //\r |
60 | PeHeader = (EFI_IMAGE_NT_HEADERS *) Pe32Data;\r | |
61 | }\r | |
cd14fe3d | 62 | \r |
878ddf1f | 63 | *EntryPoint = (VOID *) ((UINTN) Pe32Data + (UINTN) (PeHeader->OptionalHeader.AddressOfEntryPoint & 0x0ffffffff));\r |
64 | return RETURN_SUCCESS;\r | |
65 | }\r |