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82325f95 | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
d276ac10 HL |
4 | Copyright (c) 2013 - 2014, ARM Ltd. All rights reserved.<BR>\r |
5 | \r | |
82325f95 | 6 | This program and the accompanying materials\r |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | #include <Base.h>\r | |
16 | \r | |
17 | #include <Library/BaseLib.h>\r | |
18 | #include <Library/SemihostLib.h>\r | |
19 | \r | |
20 | #include "SemihostPrivate.h"\r | |
21 | \r | |
22 | BOOLEAN\r | |
23 | SemihostConnectionSupported (\r | |
24 | VOID\r | |
25 | )\r | |
26 | {\r | |
27 | return SEMIHOST_SUPPORTED;\r | |
28 | }\r | |
29 | \r | |
30 | RETURN_STATUS\r | |
31 | SemihostFileOpen (\r | |
32 | IN CHAR8 *FileName,\r | |
33 | IN UINT32 Mode,\r | |
c63626b7 | 34 | OUT UINTN *FileHandle\r |
82325f95 | 35 | )\r |
36 | {\r | |
37 | SEMIHOST_FILE_OPEN_BLOCK OpenBlock;\r | |
38 | INT32 Result;\r | |
39 | \r | |
40 | if (FileHandle == NULL) {\r | |
41 | return RETURN_INVALID_PARAMETER;\r | |
42 | }\r | |
43 | \r | |
8fa3caf2 | 44 | // Remove any leading separator (e.g.: '\'). EFI Shell adds one.\r |
45 | if (*FileName == '\\') {\r | |
46 | FileName++;\r | |
47 | }\r | |
48 | \r | |
82325f95 | 49 | OpenBlock.FileName = FileName;\r |
50 | OpenBlock.Mode = Mode;\r | |
51 | OpenBlock.NameLength = AsciiStrLen(FileName);\r | |
52 | \r | |
53 | Result = Semihost_SYS_OPEN(&OpenBlock);\r | |
54 | \r | |
55 | if (Result == -1) {\r | |
56 | return RETURN_NOT_FOUND;\r | |
57 | } else {\r | |
58 | *FileHandle = Result;\r | |
59 | return RETURN_SUCCESS;\r | |
60 | }\r | |
61 | }\r | |
62 | \r | |
63 | RETURN_STATUS\r | |
64 | SemihostFileSeek (\r | |
c63626b7 | 65 | IN UINTN FileHandle,\r |
66 | IN UINTN Offset\r | |
82325f95 | 67 | )\r |
68 | {\r | |
69 | SEMIHOST_FILE_SEEK_BLOCK SeekBlock;\r | |
70 | INT32 Result;\r | |
71 | \r | |
72 | SeekBlock.Handle = FileHandle;\r | |
73 | SeekBlock.Location = Offset;\r | |
74 | \r | |
75 | Result = Semihost_SYS_SEEK(&SeekBlock);\r | |
76 | \r | |
d276ac10 HL |
77 | // Semihosting does not behave as documented. It returns the offset on\r |
78 | // success.\r | |
79 | if (Result < 0) {\r | |
82325f95 | 80 | return RETURN_ABORTED;\r |
d276ac10 HL |
81 | } else {\r |
82 | return RETURN_SUCCESS;\r | |
82325f95 | 83 | }\r |
84 | }\r | |
85 | \r | |
86 | RETURN_STATUS\r | |
87 | SemihostFileRead (\r | |
c63626b7 | 88 | IN UINTN FileHandle,\r |
89 | IN OUT UINTN *Length,\r | |
82325f95 | 90 | OUT VOID *Buffer\r |
91 | )\r | |
92 | {\r | |
93 | SEMIHOST_FILE_READ_WRITE_BLOCK ReadBlock;\r | |
94 | UINT32 Result;\r | |
95 | \r | |
96 | if ((Length == NULL) || (Buffer == NULL)) {\r | |
97 | return RETURN_INVALID_PARAMETER;\r | |
98 | }\r | |
99 | \r | |
100 | ReadBlock.Handle = FileHandle;\r | |
101 | ReadBlock.Buffer = Buffer;\r | |
102 | ReadBlock.Length = *Length;\r | |
103 | \r | |
104 | Result = Semihost_SYS_READ(&ReadBlock);\r | |
105 | \r | |
d276ac10 | 106 | if ((*Length != 0) && (Result == *Length)) {\r |
82325f95 | 107 | return RETURN_ABORTED;\r |
108 | } else {\r | |
109 | *Length -= Result;\r | |
110 | return RETURN_SUCCESS;\r | |
111 | }\r | |
112 | }\r | |
113 | \r | |
114 | RETURN_STATUS\r | |
115 | SemihostFileWrite (\r | |
c63626b7 | 116 | IN UINTN FileHandle,\r |
117 | IN OUT UINTN *Length,\r | |
82325f95 | 118 | IN VOID *Buffer\r |
119 | )\r | |
120 | {\r | |
121 | SEMIHOST_FILE_READ_WRITE_BLOCK WriteBlock;\r | |
122 | \r | |
123 | if ((Length == NULL) || (Buffer == NULL)) {\r | |
124 | return RETURN_INVALID_PARAMETER;\r | |
125 | }\r | |
126 | \r | |
127 | WriteBlock.Handle = FileHandle;\r | |
128 | WriteBlock.Buffer = Buffer;\r | |
129 | WriteBlock.Length = *Length;\r | |
130 | \r | |
131 | *Length = Semihost_SYS_WRITE(&WriteBlock);\r | |
d276ac10 HL |
132 | \r |
133 | if (*Length != 0)\r | |
134 | return RETURN_ABORTED;\r | |
135 | else\r | |
136 | return RETURN_SUCCESS;\r | |
82325f95 | 137 | }\r |
138 | \r | |
139 | RETURN_STATUS\r | |
140 | SemihostFileClose (\r | |
c63626b7 | 141 | IN UINTN FileHandle\r |
82325f95 | 142 | )\r |
143 | {\r | |
144 | INT32 Result = Semihost_SYS_CLOSE(&FileHandle);\r | |
145 | \r | |
146 | if (Result == -1) {\r | |
147 | return RETURN_INVALID_PARAMETER;\r | |
148 | } else {\r | |
149 | return RETURN_SUCCESS;\r | |
150 | }\r | |
151 | }\r | |
152 | \r | |
153 | RETURN_STATUS\r | |
154 | SemihostFileLength (\r | |
c63626b7 | 155 | IN UINTN FileHandle,\r |
156 | OUT UINTN *Length\r | |
82325f95 | 157 | )\r |
158 | {\r | |
159 | INT32 Result;\r | |
160 | \r | |
161 | if (Length == NULL) {\r | |
162 | return RETURN_INVALID_PARAMETER;\r | |
163 | }\r | |
164 | \r | |
165 | Result = Semihost_SYS_FLEN(&FileHandle);\r | |
166 | \r | |
167 | if (Result == -1) {\r | |
168 | return RETURN_ABORTED;\r | |
169 | } else {\r | |
170 | *Length = Result;\r | |
171 | return RETURN_SUCCESS;\r | |
172 | }\r | |
173 | }\r | |
174 | \r | |
175 | RETURN_STATUS\r | |
176 | SemihostFileRemove (\r | |
177 | IN CHAR8 *FileName\r | |
178 | )\r | |
179 | {\r | |
180 | SEMIHOST_FILE_REMOVE_BLOCK RemoveBlock;\r | |
181 | UINT32 Result;\r | |
182 | \r | |
d276ac10 HL |
183 | // Remove any leading separator (e.g.: '\'). EFI Shell adds one.\r |
184 | if (*FileName == '\\') {\r | |
185 | FileName++;\r | |
186 | }\r | |
187 | \r | |
82325f95 | 188 | RemoveBlock.FileName = FileName;\r |
189 | RemoveBlock.NameLength = AsciiStrLen(FileName);\r | |
190 | \r | |
191 | Result = Semihost_SYS_REMOVE(&RemoveBlock);\r | |
192 | \r | |
193 | if (Result == 0) {\r | |
194 | return RETURN_SUCCESS;\r | |
195 | } else {\r | |
196 | return RETURN_ABORTED;\r | |
197 | }\r | |
198 | }\r | |
199 | \r | |
200 | CHAR8\r | |
201 | SemihostReadCharacter (\r | |
202 | VOID\r | |
203 | )\r | |
204 | {\r | |
205 | return Semihost_SYS_READC();\r | |
206 | }\r | |
207 | \r | |
208 | VOID\r | |
209 | SemihostWriteCharacter (\r | |
210 | IN CHAR8 Character\r | |
211 | )\r | |
212 | {\r | |
213 | Semihost_SYS_WRITEC(&Character);\r | |
214 | }\r | |
215 | \r | |
216 | VOID\r | |
217 | SemihostWriteString (\r | |
218 | IN CHAR8 *String\r | |
219 | )\r | |
220 | {\r | |
221 | Semihost_SYS_WRITE0(String);\r | |
222 | }\r | |
223 | \r | |
224 | UINT32\r | |
225 | SemihostSystem (\r | |
226 | IN CHAR8 *CommandLine\r | |
227 | )\r | |
228 | {\r | |
229 | SEMIHOST_SYSTEM_BLOCK SystemBlock;\r | |
230 | \r | |
231 | SystemBlock.CommandLine = CommandLine;\r | |
232 | SystemBlock.CommandLength = AsciiStrLen(CommandLine);\r | |
233 | \r | |
234 | return Semihost_SYS_SYSTEM(&SystemBlock);\r | |
235 | }\r |