1 /** @file 2 Provides services to perform additional actions to relocate and unload 3 PE/Coff image for Emu environment specific purpose such as souce level debug. 4 This version only works for DXE phase 5 6 Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR> 7 Portions copyright (c) 2008 - 2011, Apple Inc. All rights reserved.<BR> 8 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 12 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. 15 16 **/ 17 18 #include <PiDxe.h> 19 20 #include <Protocol/EmuThunk.h> 21 22 #include <Library/PeCoffLib.h> 23 #include <Library/BaseLib.h> 24 #include <Library/DebugLib.h> 25 #include <Library/HobLib.h> 26 #include <Library/BaseMemoryLib.h> 27 #include <Library/PeCoffExtraActionLib.h> 28 29 // 30 // Cache of UnixThunk protocol 31 // 32 EMU_THUNK_PROTOCOL *mThunk = NULL; 33 34 35 /** 36 The constructor function gets the pointer of the WinNT thunk functions 37 It will ASSERT() if Unix thunk protocol is not installed. 38 39 @retval EFI_SUCCESS Unix thunk protocol is found and cached. 40 41 **/ 42 EFI_STATUS 43 EFIAPI 44 DxeEmuPeCoffLibExtraActionConstructor ( 45 IN EFI_HANDLE ImageHandle, 46 IN EFI_SYSTEM_TABLE *SystemTable 47 ) 48 { 49 EFI_HOB_GUID_TYPE *GuidHob; 50 51 // 52 // Retrieve EmuThunkProtocol from GUID'ed HOB 53 // 54 GuidHob = GetFirstGuidHob (&gEmuThunkProtocolGuid); 55 ASSERT (GuidHob != NULL); 56 mThunk = (EMU_THUNK_PROTOCOL *)(*(UINTN *)(GET_GUID_HOB_DATA (GuidHob))); 57 ASSERT (mThunk != NULL); 58 59 return EFI_SUCCESS; 60 } 61 62 /** 63 Performs additional actions after a PE/COFF image has been loaded and relocated. 64 65 If ImageContext is NULL, then ASSERT(). 66 67 @param ImageContext Pointer to the image context structure that describes the 68 PE/COFF image that has already been loaded and relocated. 69 70 **/ 71 VOID 72 EFIAPI 73 PeCoffLoaderRelocateImageExtraAction ( 74 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext 75 ) 76 { 77 if (mThunk != NULL) { 78 mThunk->PeCoffRelocateImageExtraAction (ImageContext); 79 } 80 } 81 82 83 84 /** 85 Performs additional actions just before a PE/COFF image is unloaded. Any resources 86 that were allocated by PeCoffLoaderRelocateImageExtraAction() must be freed. 87 88 If ImageContext is NULL, then ASSERT(). 89 90 @param ImageContext Pointer to the image context structure that describes the 91 PE/COFF image that is being unloaded. 92 93 **/ 94 VOID 95 EFIAPI 96 PeCoffLoaderUnloadImageExtraAction ( 97 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext 98 ) 99 { 100 if (mThunk != NULL) { 101 mThunk->PeCoffUnloadImageExtraAction (ImageContext); 102 } 103 } 104
