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1 | /** @file\r | |
2 | Functions to deal with Mem buffer\r | |
3 | \r | |
4 | Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved. <BR>\r | |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
6 | \r | |
7 | **/\r | |
8 | \r | |
9 | #include "HexEditor.h"\r | |
10 | \r | |
11 | extern EFI_HANDLE HImageHandleBackup;\r | |
12 | \r | |
13 | extern HEFI_EDITOR_BUFFER_IMAGE HBufferImage;\r | |
14 | \r | |
15 | extern BOOLEAN HBufferImageNeedRefresh;\r | |
16 | extern BOOLEAN HBufferImageOnlyLineNeedRefresh;\r | |
17 | extern BOOLEAN HBufferImageMouseNeedRefresh;\r | |
18 | \r | |
19 | extern HEFI_EDITOR_GLOBAL_EDITOR HMainEditor;\r | |
20 | \r | |
21 | HEFI_EDITOR_MEM_IMAGE HMemImage;\r | |
22 | HEFI_EDITOR_MEM_IMAGE HMemImageBackupVar;\r | |
23 | \r | |
24 | //\r | |
25 | // for basic initialization of HDiskImage\r | |
26 | //\r | |
27 | HEFI_EDITOR_MEM_IMAGE HMemImageConst = {\r | |
28 | NULL,\r | |
29 | 0,\r | |
30 | 0\r | |
31 | };\r | |
32 | \r | |
33 | /**\r | |
34 | Initialization function for HDiskImage.\r | |
35 | \r | |
36 | @retval EFI_SUCCESS The operation was successful.\r | |
37 | @retval EFI_LOAD_ERROR A load error occurred.\r | |
38 | **/\r | |
39 | EFI_STATUS\r | |
40 | HMemImageInit (\r | |
41 | VOID\r | |
42 | )\r | |
43 | {\r | |
44 | EFI_STATUS Status;\r | |
45 | \r | |
46 | //\r | |
47 | // basically initialize the HMemImage\r | |
48 | //\r | |
49 | CopyMem (&HMemImage, &HMemImageConst, sizeof (HMemImage));\r | |
50 | \r | |
51 | Status = gBS->LocateProtocol (\r | |
52 | &gEfiCpuIo2ProtocolGuid,\r | |
53 | NULL,\r | |
54 | (VOID **)&HMemImage.IoFncs\r | |
55 | );\r | |
56 | if (!EFI_ERROR (Status)) {\r | |
57 | return EFI_SUCCESS;\r | |
58 | } else {\r | |
59 | return EFI_LOAD_ERROR;\r | |
60 | }\r | |
61 | }\r | |
62 | \r | |
63 | /**\r | |
64 | Backup function for HDiskImage. Only a few fields need to be backup.\r | |
65 | This is for making the Disk buffer refresh as few as possible.\r | |
66 | \r | |
67 | @retval EFI_SUCCESS The operation was successful.\r | |
68 | **/\r | |
69 | EFI_STATUS\r | |
70 | HMemImageBackup (\r | |
71 | VOID\r | |
72 | )\r | |
73 | {\r | |
74 | HMemImageBackupVar.Offset = HMemImage.Offset;\r | |
75 | HMemImageBackupVar.Size = HMemImage.Size;\r | |
76 | \r | |
77 | return EFI_SUCCESS;\r | |
78 | }\r | |
79 | \r | |
80 | /**\r | |
81 | Set FileName field in HFileImage.\r | |
82 | \r | |
83 | @param[in] Offset The offset.\r | |
84 | @param[in] Size The size.\r | |
85 | \r | |
86 | @retval EFI_SUCCESS The operation was successful.\r | |
87 | @retval EFI_OUT_OF_RESOURCES A memory allocation failed.\r | |
88 | **/\r | |
89 | EFI_STATUS\r | |
90 | HMemImageSetMemOffsetSize (\r | |
91 | IN UINTN Offset,\r | |
92 | IN UINTN Size\r | |
93 | )\r | |
94 | {\r | |
95 | HMemImage.Offset = Offset;\r | |
96 | HMemImage.Size = Size;\r | |
97 | \r | |
98 | return EFI_SUCCESS;\r | |
99 | }\r | |
100 | \r | |
101 | /**\r | |
102 | Read a disk from disk into HBufferImage.\r | |
103 | \r | |
104 | @param[in] Offset The offset.\r | |
105 | @param[in] Size The size.\r | |
106 | @param[in] Recover if is for recover, no information print.\r | |
107 | \r | |
108 | @retval EFI_LOAD_ERROR A load error occurred.\r | |
109 | @retval EFI_SUCCESS The operation was successful.\r | |
110 | @retval EFI_OUT_OF_RESOURCES A memory allocation failed.\r | |
111 | **/\r | |
112 | EFI_STATUS\r | |
113 | HMemImageRead (\r | |
114 | IN UINTN Offset,\r | |
115 | IN UINTN Size,\r | |
116 | IN BOOLEAN Recover\r | |
117 | )\r | |
118 | {\r | |
119 | EFI_STATUS Status;\r | |
120 | void *Buffer;\r | |
121 | CHAR16 *Str;\r | |
122 | HEFI_EDITOR_LINE *Line;\r | |
123 | \r | |
124 | HBufferImage.BufferType = FileTypeMemBuffer;\r | |
125 | \r | |
126 | Buffer = AllocateZeroPool (Size);\r | |
127 | if (Buffer == NULL) {\r | |
128 | StatusBarSetStatusString (L"Read Memory Failed");\r | |
129 | return EFI_OUT_OF_RESOURCES;\r | |
130 | }\r | |
131 | \r | |
132 | Status = HMemImage.IoFncs->Mem.Read (\r | |
133 | HMemImage.IoFncs,\r | |
134 | EfiCpuIoWidthUint8,\r | |
135 | Offset,\r | |
136 | Size,\r | |
137 | Buffer\r | |
138 | );\r | |
139 | \r | |
140 | if (EFI_ERROR (Status)) {\r | |
141 | FreePool (Buffer);\r | |
142 | StatusBarSetStatusString (L"Memory Specified Not Accessible");\r | |
143 | return EFI_LOAD_ERROR;\r | |
144 | }\r | |
145 | \r | |
146 | HBufferImageFree ();\r | |
147 | \r | |
148 | Status = HBufferImageBufferToList (Buffer, Size);\r | |
149 | FreePool (Buffer);\r | |
150 | \r | |
151 | if (EFI_ERROR (Status)) {\r | |
152 | StatusBarSetStatusString (L"Read Memory Failed");\r | |
153 | return Status;\r | |
154 | }\r | |
155 | \r | |
156 | Status = HMemImageSetMemOffsetSize (Offset, Size);\r | |
157 | \r | |
158 | HBufferImage.DisplayPosition.Row = 2;\r | |
159 | HBufferImage.DisplayPosition.Column = 10;\r | |
160 | \r | |
161 | HBufferImage.MousePosition.Row = 2;\r | |
162 | HBufferImage.MousePosition.Column = 10;\r | |
163 | \r | |
164 | HBufferImage.LowVisibleRow = 1;\r | |
165 | HBufferImage.HighBits = TRUE;\r | |
166 | \r | |
167 | HBufferImage.BufferPosition.Row = 1;\r | |
168 | HBufferImage.BufferPosition.Column = 1;\r | |
169 | \r | |
170 | if (!Recover) {\r | |
171 | Str = CatSPrint (NULL, L"%d Lines Read", HBufferImage.NumLines);\r | |
172 | if (Str == NULL) {\r | |
173 | StatusBarSetStatusString (L"Read Memory Failed");\r | |
174 | return EFI_OUT_OF_RESOURCES;\r | |
175 | }\r | |
176 | \r | |
177 | StatusBarSetStatusString (Str);\r | |
178 | SHELL_FREE_NON_NULL (Str);\r | |
179 | \r | |
180 | HMainEditor.SelectStart = 0;\r | |
181 | HMainEditor.SelectEnd = 0;\r | |
182 | }\r | |
183 | \r | |
184 | //\r | |
185 | // has line\r | |
186 | //\r | |
187 | if (HBufferImage.Lines != NULL) {\r | |
188 | HBufferImage.CurrentLine = CR (HBufferImage.ListHead->ForwardLink, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);\r | |
189 | } else {\r | |
190 | //\r | |
191 | // create a dummy line\r | |
192 | //\r | |
193 | Line = HBufferImageCreateLine ();\r | |
194 | if (Line == NULL) {\r | |
195 | StatusBarSetStatusString (L"Read Memory Failed");\r | |
196 | return EFI_OUT_OF_RESOURCES;\r | |
197 | }\r | |
198 | \r | |
199 | HBufferImage.CurrentLine = Line;\r | |
200 | }\r | |
201 | \r | |
202 | HBufferImage.Modified = FALSE;\r | |
203 | HBufferImageNeedRefresh = TRUE;\r | |
204 | HBufferImageOnlyLineNeedRefresh = FALSE;\r | |
205 | HBufferImageMouseNeedRefresh = TRUE;\r | |
206 | \r | |
207 | return EFI_SUCCESS;\r | |
208 | }\r | |
209 | \r | |
210 | /**\r | |
211 | Save lines in HBufferImage to disk.\r | |
212 | \r | |
213 | @param[in] Offset The offset.\r | |
214 | @param[in] Size The size.\r | |
215 | \r | |
216 | @retval EFI_LOAD_ERROR A load error occurred.\r | |
217 | @retval EFI_SUCCESS The operation was successful.\r | |
218 | @retval EFI_OUT_OF_RESOURCES A memory allocation failed.\r | |
219 | **/\r | |
220 | EFI_STATUS\r | |
221 | HMemImageSave (\r | |
222 | IN UINTN Offset,\r | |
223 | IN UINTN Size\r | |
224 | )\r | |
225 | {\r | |
226 | EFI_STATUS Status;\r | |
227 | VOID *Buffer;\r | |
228 | \r | |
229 | //\r | |
230 | // not modified, so directly return\r | |
231 | //\r | |
232 | if (HBufferImage.Modified == FALSE) {\r | |
233 | return EFI_SUCCESS;\r | |
234 | }\r | |
235 | \r | |
236 | HBufferImage.BufferType = FileTypeMemBuffer;\r | |
237 | \r | |
238 | Buffer = AllocateZeroPool (Size);\r | |
239 | \r | |
240 | if (Buffer == NULL) {\r | |
241 | return EFI_OUT_OF_RESOURCES;\r | |
242 | }\r | |
243 | \r | |
244 | Status = HBufferImageListToBuffer (Buffer, Size);\r | |
245 | if (EFI_ERROR (Status)) {\r | |
246 | FreePool (Buffer);\r | |
247 | return Status;\r | |
248 | }\r | |
249 | \r | |
250 | //\r | |
251 | // write back to memory\r | |
252 | //\r | |
253 | Status = HMemImage.IoFncs->Mem.Write (\r | |
254 | HMemImage.IoFncs,\r | |
255 | EfiCpuIoWidthUint8,\r | |
256 | Offset,\r | |
257 | Size,\r | |
258 | Buffer\r | |
259 | );\r | |
260 | \r | |
261 | FreePool (Buffer);\r | |
262 | \r | |
263 | if (EFI_ERROR (Status)) {\r | |
264 | return EFI_LOAD_ERROR;\r | |
265 | }\r | |
266 | \r | |
267 | //\r | |
268 | // now not modified\r | |
269 | //\r | |
270 | HBufferImage.Modified = FALSE;\r | |
271 | \r | |
272 | return EFI_SUCCESS;\r | |
273 | }\r |