]>
Commit | Line | Data |
---|---|---|
d7a09cb8 SB |
1 | /** @file\r |
2 | This library provides helper functions to prevent integer overflow during\r | |
3 | type conversion, addition, subtraction, and multiplication.\r | |
4 | \r | |
5 | Copyright (c) 2017, Microsoft Corporation\r | |
6 | \r | |
7 | All rights reserved.\r | |
8 | Redistribution and use in source and binary forms, with or without\r | |
9 | modification, are permitted provided that the following conditions are met:\r | |
10 | 1. Redistributions of source code must retain the above copyright notice,\r | |
11 | this list of conditions and the following disclaimer.\r | |
12 | 2. Redistributions in binary form must reproduce the above copyright notice,\r | |
13 | this list of conditions and the following disclaimer in the documentation\r | |
14 | and/or other materials provided with the distribution.\r | |
15 | \r | |
16 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND\r | |
17 | ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\r | |
18 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.\r | |
19 | IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,\r | |
20 | INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,\r | |
21 | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\r | |
22 | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF\r | |
23 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE\r | |
24 | OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF\r | |
25 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r | |
26 | \r | |
27 | **/\r | |
28 | \r | |
29 | #include <Base.h>\r | |
30 | #include <Library/SafeIntLib.h>\r | |
31 | \r | |
32 | \r | |
33 | //\r | |
34 | // Magnitude of MIN_INT64 as expressed by a UINT64 number.\r | |
35 | //\r | |
8c33cc0e | 36 | #define MIN_INT64_MAGNITUDE (((UINT64)(- (MIN_INT64 + 1))) + 1)\r |
d7a09cb8 SB |
37 | \r |
38 | //\r | |
39 | // Conversion functions\r | |
40 | //\r | |
41 | // There are three reasons for having conversion functions:\r | |
42 | //\r | |
43 | // 1. We are converting from a signed type to an unsigned type of the same\r | |
44 | // size, or vice-versa.\r | |
45 | //\r | |
46 | // 2. We are converting to a smaller type, and we could therefore possibly\r | |
47 | // overflow.\r | |
48 | //\r | |
49 | // 3. We are converting to a bigger type, and we are signed and the type we are\r | |
50 | // converting to is unsigned.\r | |
51 | //\r | |
52 | \r | |
53 | /**\r | |
54 | INT8 -> UINT8 conversion\r | |
55 | \r | |
56 | Converts the value specified by Operand to a value specified by Result type\r | |
57 | and stores the converted value into the caller allocated output buffer\r | |
58 | specified by Result. The caller must pass in a Result buffer that is at\r | |
59 | least as large as the Result type.\r | |
60 | \r | |
61 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
62 | \r | |
63 | If the conversion results in an overflow or an underflow condition, then\r | |
64 | Result is set to UINT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
65 | \r | |
66 | @param[in] Operand Operand to be converted to new type\r | |
67 | @param[out] Result Pointer to the result of conversion\r | |
68 | \r | |
69 | @retval RETURN_SUCCESS Successful conversion\r | |
70 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
71 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
72 | **/\r | |
73 | RETURN_STATUS\r | |
74 | EFIAPI\r | |
75 | SafeInt8ToUint8 (\r | |
76 | IN INT8 Operand,\r | |
77 | OUT UINT8 *Result\r | |
78 | )\r | |
79 | {\r | |
80 | RETURN_STATUS Status;\r | |
81 | \r | |
82 | if (Result == NULL) {\r | |
83 | return RETURN_INVALID_PARAMETER;\r | |
84 | }\r | |
85 | \r | |
86 | if (Operand >= 0) {\r | |
87 | *Result = (UINT8)Operand;\r | |
88 | Status = RETURN_SUCCESS;\r | |
89 | } else {\r | |
90 | *Result = UINT8_ERROR;\r | |
91 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
92 | }\r | |
93 | \r | |
94 | return Status;\r | |
95 | }\r | |
96 | \r | |
97 | /**\r | |
98 | INT8 -> CHAR8 conversion\r | |
99 | \r | |
100 | Converts the value specified by Operand to a value specified by Result type\r | |
101 | and stores the converted value into the caller allocated output buffer\r | |
102 | specified by Result. The caller must pass in a Result buffer that is at\r | |
103 | least as large as the Result type.\r | |
104 | \r | |
105 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
106 | \r | |
107 | If the conversion results in an overflow or an underflow condition, then\r | |
108 | Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
109 | \r | |
110 | @param[in] Operand Operand to be converted to new type\r | |
111 | @param[out] Result Pointer to the result of conversion\r | |
112 | \r | |
113 | @retval RETURN_SUCCESS Successful conversion\r | |
114 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
115 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
116 | **/\r | |
117 | RETURN_STATUS\r | |
118 | EFIAPI\r | |
119 | SafeInt8ToChar8 (\r | |
120 | IN INT8 Operand,\r | |
121 | OUT CHAR8 *Result\r | |
122 | )\r | |
123 | {\r | |
124 | RETURN_STATUS Status;\r | |
125 | \r | |
126 | if (Result == NULL) {\r | |
127 | return RETURN_INVALID_PARAMETER;\r | |
128 | }\r | |
129 | \r | |
130 | if (Operand >= 0) {\r | |
131 | *Result = (CHAR8)Operand;\r | |
132 | Status = RETURN_SUCCESS;\r | |
133 | } else {\r | |
134 | *Result = CHAR8_ERROR;\r | |
135 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
136 | }\r | |
137 | \r | |
138 | return Status;\r | |
139 | }\r | |
140 | \r | |
141 | /**\r | |
142 | INT8 -> UINT16 conversion\r | |
143 | \r | |
144 | Converts the value specified by Operand to a value specified by Result type\r | |
145 | and stores the converted value into the caller allocated output buffer\r | |
146 | specified by Result. The caller must pass in a Result buffer that is at\r | |
147 | least as large as the Result type.\r | |
148 | \r | |
149 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
150 | \r | |
151 | If the conversion results in an overflow or an underflow condition, then\r | |
152 | Result is set to UINT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
153 | \r | |
154 | @param[in] Operand Operand to be converted to new type\r | |
155 | @param[out] Result Pointer to the result of conversion\r | |
156 | \r | |
157 | @retval RETURN_SUCCESS Successful conversion\r | |
158 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
159 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
160 | **/\r | |
161 | RETURN_STATUS\r | |
162 | EFIAPI\r | |
163 | SafeInt8ToUint16 (\r | |
164 | IN INT8 Operand,\r | |
165 | OUT UINT16 *Result\r | |
166 | )\r | |
167 | {\r | |
168 | RETURN_STATUS Status;\r | |
169 | \r | |
170 | if (Result == NULL) {\r | |
171 | return RETURN_INVALID_PARAMETER;\r | |
172 | }\r | |
173 | \r | |
174 | if (Operand >= 0) {\r | |
175 | *Result = (UINT16)Operand;\r | |
176 | Status = RETURN_SUCCESS;\r | |
177 | } else {\r | |
178 | *Result = UINT16_ERROR;\r | |
179 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
180 | }\r | |
181 | \r | |
182 | return Status;\r | |
183 | }\r | |
184 | \r | |
185 | /**\r | |
186 | INT8 -> UINT32 conversion\r | |
187 | \r | |
188 | Converts the value specified by Operand to a value specified by Result type\r | |
189 | and stores the converted value into the caller allocated output buffer\r | |
190 | specified by Result. The caller must pass in a Result buffer that is at\r | |
191 | least as large as the Result type.\r | |
192 | \r | |
193 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
194 | \r | |
195 | If the conversion results in an overflow or an underflow condition, then\r | |
196 | Result is set to UINT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
197 | \r | |
198 | @param[in] Operand Operand to be converted to new type\r | |
199 | @param[out] Result Pointer to the result of conversion\r | |
200 | \r | |
201 | @retval RETURN_SUCCESS Successful conversion\r | |
202 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
203 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
204 | **/\r | |
205 | RETURN_STATUS\r | |
206 | EFIAPI\r | |
207 | SafeInt8ToUint32 (\r | |
208 | IN INT8 Operand,\r | |
209 | OUT UINT32 *Result\r | |
210 | )\r | |
211 | {\r | |
212 | RETURN_STATUS Status;\r | |
213 | \r | |
214 | if (Result == NULL) {\r | |
215 | return RETURN_INVALID_PARAMETER;\r | |
216 | }\r | |
217 | \r | |
218 | if (Operand >= 0) {\r | |
219 | *Result = (UINT32)Operand;\r | |
220 | Status = RETURN_SUCCESS;\r | |
221 | } else {\r | |
222 | *Result = UINT32_ERROR;\r | |
223 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
224 | }\r | |
225 | \r | |
226 | return Status;\r | |
227 | }\r | |
228 | \r | |
229 | /**\r | |
230 | INT8 -> UINTN conversion\r | |
231 | \r | |
232 | Converts the value specified by Operand to a value specified by Result type\r | |
233 | and stores the converted value into the caller allocated output buffer\r | |
234 | specified by Result. The caller must pass in a Result buffer that is at\r | |
235 | least as large as the Result type.\r | |
236 | \r | |
237 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
238 | \r | |
239 | If the conversion results in an overflow or an underflow condition, then\r | |
240 | Result is set to UINTN_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
241 | \r | |
242 | @param[in] Operand Operand to be converted to new type\r | |
243 | @param[out] Result Pointer to the result of conversion\r | |
244 | \r | |
245 | @retval RETURN_SUCCESS Successful conversion\r | |
246 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
247 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
248 | **/\r | |
249 | RETURN_STATUS\r | |
250 | EFIAPI\r | |
251 | SafeInt8ToUintn (\r | |
252 | IN INT8 Operand,\r | |
253 | OUT UINTN *Result\r | |
254 | )\r | |
255 | {\r | |
256 | RETURN_STATUS Status;\r | |
257 | \r | |
258 | if (Result == NULL) {\r | |
259 | return RETURN_INVALID_PARAMETER;\r | |
260 | }\r | |
261 | \r | |
262 | if (Operand >= 0) {\r | |
263 | *Result = (UINTN)Operand;\r | |
264 | Status = RETURN_SUCCESS;\r | |
265 | } else {\r | |
266 | *Result = UINTN_ERROR;\r | |
267 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
268 | }\r | |
269 | \r | |
270 | return Status;\r | |
271 | }\r | |
272 | \r | |
273 | /**\r | |
274 | INT8 -> UINT64 conversion\r | |
275 | \r | |
276 | Converts the value specified by Operand to a value specified by Result type\r | |
277 | and stores the converted value into the caller allocated output buffer\r | |
278 | specified by Result. The caller must pass in a Result buffer that is at\r | |
279 | least as large as the Result type.\r | |
280 | \r | |
281 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
282 | \r | |
283 | If the conversion results in an overflow or an underflow condition, then\r | |
284 | Result is set to UINT64_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
285 | \r | |
286 | @param[in] Operand Operand to be converted to new type\r | |
287 | @param[out] Result Pointer to the result of conversion\r | |
288 | \r | |
289 | @retval RETURN_SUCCESS Successful conversion\r | |
290 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
291 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
292 | **/\r | |
293 | RETURN_STATUS\r | |
294 | EFIAPI\r | |
295 | SafeInt8ToUint64 (\r | |
296 | IN INT8 Operand,\r | |
297 | OUT UINT64 *Result\r | |
298 | )\r | |
299 | {\r | |
300 | RETURN_STATUS Status;\r | |
301 | \r | |
302 | if (Result == NULL) {\r | |
303 | return RETURN_INVALID_PARAMETER;\r | |
304 | }\r | |
305 | \r | |
306 | if (Operand >= 0) {\r | |
307 | *Result = (UINT64)Operand;\r | |
308 | Status = RETURN_SUCCESS;\r | |
309 | } else {\r | |
310 | *Result = UINT64_ERROR;\r | |
311 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
312 | }\r | |
313 | \r | |
314 | return Status;\r | |
315 | }\r | |
316 | \r | |
317 | /**\r | |
318 | UINT8 -> INT8 conversion\r | |
319 | \r | |
320 | Converts the value specified by Operand to a value specified by Result type\r | |
321 | and stores the converted value into the caller allocated output buffer\r | |
322 | specified by Result. The caller must pass in a Result buffer that is at\r | |
323 | least as large as the Result type.\r | |
324 | \r | |
325 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
326 | \r | |
327 | If the conversion results in an overflow or an underflow condition, then\r | |
328 | Result is set to INT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
329 | \r | |
330 | @param[in] Operand Operand to be converted to new type\r | |
331 | @param[out] Result Pointer to the result of conversion\r | |
332 | \r | |
333 | @retval RETURN_SUCCESS Successful conversion\r | |
334 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
335 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
336 | **/\r | |
337 | RETURN_STATUS\r | |
338 | EFIAPI\r | |
339 | SafeUint8ToInt8 (\r | |
340 | IN UINT8 Operand,\r | |
341 | OUT INT8 *Result\r | |
342 | )\r | |
343 | {\r | |
344 | RETURN_STATUS Status;\r | |
345 | \r | |
346 | if (Result == NULL) {\r | |
347 | return RETURN_INVALID_PARAMETER;\r | |
348 | }\r | |
349 | \r | |
350 | if (Operand <= MAX_INT8) {\r | |
351 | *Result = (INT8)Operand;\r | |
352 | Status = RETURN_SUCCESS;\r | |
353 | } else {\r | |
354 | *Result = INT8_ERROR;\r | |
355 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
356 | }\r | |
357 | \r | |
358 | return Status;\r | |
359 | }\r | |
360 | \r | |
361 | /**\r | |
362 | UINT8 -> CHAR8 conversion\r | |
363 | \r | |
364 | Converts the value specified by Operand to a value specified by Result type\r | |
365 | and stores the converted value into the caller allocated output buffer\r | |
366 | specified by Result. The caller must pass in a Result buffer that is at\r | |
367 | least as large as the Result type.\r | |
368 | \r | |
369 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
370 | \r | |
371 | If the conversion results in an overflow or an underflow condition, then\r | |
372 | Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
373 | \r | |
374 | @param[in] Operand Operand to be converted to new type\r | |
375 | @param[out] Result Pointer to the result of conversion\r | |
376 | \r | |
377 | @retval RETURN_SUCCESS Successful conversion\r | |
378 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
379 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
380 | **/\r | |
381 | RETURN_STATUS\r | |
382 | EFIAPI\r | |
383 | SafeUint8ToChar8 (\r | |
384 | IN UINT8 Operand,\r | |
385 | OUT CHAR8 *Result\r | |
386 | )\r | |
387 | {\r | |
388 | RETURN_STATUS Status;\r | |
389 | \r | |
390 | if (Result == NULL) {\r | |
391 | return RETURN_INVALID_PARAMETER;\r | |
392 | }\r | |
393 | \r | |
394 | if (Operand <= MAX_INT8) {\r | |
395 | *Result = (CHAR8)Operand;\r | |
396 | Status = RETURN_SUCCESS;\r | |
397 | } else {\r | |
398 | *Result = CHAR8_ERROR;\r | |
399 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
400 | }\r | |
401 | \r | |
402 | return Status;\r | |
403 | }\r | |
404 | \r | |
405 | /**\r | |
406 | INT16 -> INT8 conversion\r | |
407 | \r | |
408 | Converts the value specified by Operand to a value specified by Result type\r | |
409 | and stores the converted value into the caller allocated output buffer\r | |
410 | specified by Result. The caller must pass in a Result buffer that is at\r | |
411 | least as large as the Result type.\r | |
412 | \r | |
413 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
414 | \r | |
415 | If the conversion results in an overflow or an underflow condition, then\r | |
416 | Result is set to INT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
417 | \r | |
418 | @param[in] Operand Operand to be converted to new type\r | |
419 | @param[out] Result Pointer to the result of conversion\r | |
420 | \r | |
421 | @retval RETURN_SUCCESS Successful conversion\r | |
422 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
423 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
424 | **/\r | |
425 | RETURN_STATUS\r | |
426 | EFIAPI\r | |
427 | SafeInt16ToInt8 (\r | |
428 | IN INT16 Operand,\r | |
429 | OUT INT8 *Result\r | |
430 | )\r | |
431 | {\r | |
432 | RETURN_STATUS Status;\r | |
433 | \r | |
434 | if (Result == NULL) {\r | |
435 | return RETURN_INVALID_PARAMETER;\r | |
436 | }\r | |
437 | \r | |
438 | if ((Operand >= MIN_INT8) && (Operand <= MAX_INT8)) {\r | |
439 | *Result = (INT8)Operand;\r | |
440 | Status = RETURN_SUCCESS;\r | |
441 | } else {\r | |
442 | *Result = INT8_ERROR;\r | |
443 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
444 | }\r | |
445 | \r | |
446 | return Status;\r | |
447 | }\r | |
448 | \r | |
449 | /**\r | |
450 | INT16 -> CHAR8 conversion\r | |
451 | \r | |
452 | Converts the value specified by Operand to a value specified by Result type\r | |
453 | and stores the converted value into the caller allocated output buffer\r | |
454 | specified by Result. The caller must pass in a Result buffer that is at\r | |
455 | least as large as the Result type.\r | |
456 | \r | |
457 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
458 | \r | |
459 | If the conversion results in an overflow or an underflow condition, then\r | |
460 | Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
461 | \r | |
462 | @param[in] Operand Operand to be converted to new type\r | |
463 | @param[out] Result Pointer to the result of conversion\r | |
464 | \r | |
465 | @retval RETURN_SUCCESS Successful conversion\r | |
466 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
467 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
468 | **/\r | |
469 | RETURN_STATUS\r | |
470 | EFIAPI\r | |
471 | SafeInt16ToChar8 (\r | |
472 | IN INT16 Operand,\r | |
473 | OUT CHAR8 *Result\r | |
474 | )\r | |
475 | {\r | |
476 | RETURN_STATUS Status;\r | |
477 | \r | |
478 | if (Result == NULL) {\r | |
479 | return RETURN_INVALID_PARAMETER;\r | |
480 | }\r | |
481 | \r | |
482 | if ((Operand >= 0) && (Operand <= MAX_INT8)) {\r | |
483 | *Result = (CHAR8)Operand;\r | |
484 | Status = RETURN_SUCCESS;\r | |
485 | } else {\r | |
486 | *Result = CHAR8_ERROR;\r | |
487 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
488 | }\r | |
489 | \r | |
490 | return Status;\r | |
491 | }\r | |
492 | \r | |
493 | /**\r | |
494 | INT16 -> UINT8 conversion\r | |
495 | \r | |
496 | Converts the value specified by Operand to a value specified by Result type\r | |
497 | and stores the converted value into the caller allocated output buffer\r | |
498 | specified by Result. The caller must pass in a Result buffer that is at\r | |
499 | least as large as the Result type.\r | |
500 | \r | |
501 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
502 | \r | |
503 | If the conversion results in an overflow or an underflow condition, then\r | |
504 | Result is set to UINT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
505 | \r | |
506 | @param[in] Operand Operand to be converted to new type\r | |
507 | @param[out] Result Pointer to the result of conversion\r | |
508 | \r | |
509 | @retval RETURN_SUCCESS Successful conversion\r | |
510 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
511 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
512 | **/\r | |
513 | RETURN_STATUS\r | |
514 | EFIAPI\r | |
515 | SafeInt16ToUint8 (\r | |
516 | IN INT16 Operand,\r | |
517 | OUT UINT8 *Result\r | |
518 | )\r | |
519 | {\r | |
520 | RETURN_STATUS Status;\r | |
521 | \r | |
522 | if (Result == NULL) {\r | |
523 | return RETURN_INVALID_PARAMETER;\r | |
524 | }\r | |
525 | \r | |
526 | if ((Operand >= 0) && (Operand <= MAX_UINT8)) {\r | |
527 | *Result = (UINT8)Operand;\r | |
528 | Status = RETURN_SUCCESS;\r | |
529 | } else {\r | |
530 | *Result = UINT8_ERROR;\r | |
531 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
532 | }\r | |
533 | \r | |
534 | return Status;\r | |
535 | }\r | |
536 | \r | |
537 | /**\r | |
538 | INT16 -> UINT16 conversion\r | |
539 | \r | |
540 | Converts the value specified by Operand to a value specified by Result type\r | |
541 | and stores the converted value into the caller allocated output buffer\r | |
542 | specified by Result. The caller must pass in a Result buffer that is at\r | |
543 | least as large as the Result type.\r | |
544 | \r | |
545 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
546 | \r | |
547 | If the conversion results in an overflow or an underflow condition, then\r | |
548 | Result is set to UINT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
549 | \r | |
550 | @param[in] Operand Operand to be converted to new type\r | |
551 | @param[out] Result Pointer to the result of conversion\r | |
552 | \r | |
553 | @retval RETURN_SUCCESS Successful conversion\r | |
554 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
555 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
556 | **/\r | |
557 | RETURN_STATUS\r | |
558 | EFIAPI\r | |
559 | SafeInt16ToUint16 (\r | |
560 | IN INT16 Operand,\r | |
561 | OUT UINT16 *Result\r | |
562 | )\r | |
563 | {\r | |
564 | RETURN_STATUS Status;\r | |
565 | \r | |
566 | if (Result == NULL) {\r | |
567 | return RETURN_INVALID_PARAMETER;\r | |
568 | }\r | |
569 | \r | |
570 | if (Operand >= 0) {\r | |
571 | *Result = (UINT16)Operand;\r | |
572 | Status = RETURN_SUCCESS;\r | |
573 | } else {\r | |
574 | *Result = UINT16_ERROR;\r | |
575 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
576 | }\r | |
577 | \r | |
578 | return Status;\r | |
579 | }\r | |
580 | \r | |
581 | /**\r | |
582 | INT16 -> UINT32 conversion\r | |
583 | \r | |
584 | Converts the value specified by Operand to a value specified by Result type\r | |
585 | and stores the converted value into the caller allocated output buffer\r | |
586 | specified by Result. The caller must pass in a Result buffer that is at\r | |
587 | least as large as the Result type.\r | |
588 | \r | |
589 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
590 | \r | |
591 | If the conversion results in an overflow or an underflow condition, then\r | |
592 | Result is set to UINT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
593 | \r | |
594 | @param[in] Operand Operand to be converted to new type\r | |
595 | @param[out] Result Pointer to the result of conversion\r | |
596 | \r | |
597 | @retval RETURN_SUCCESS Successful conversion\r | |
598 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
599 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
600 | **/\r | |
601 | RETURN_STATUS\r | |
602 | EFIAPI\r | |
603 | SafeInt16ToUint32 (\r | |
604 | IN INT16 Operand,\r | |
605 | OUT UINT32 *Result\r | |
606 | )\r | |
607 | {\r | |
608 | RETURN_STATUS Status;\r | |
609 | \r | |
610 | if (Result == NULL) {\r | |
611 | return RETURN_INVALID_PARAMETER;\r | |
612 | }\r | |
613 | \r | |
614 | if (Operand >= 0) {\r | |
615 | *Result = (UINT32)Operand;\r | |
616 | Status = RETURN_SUCCESS;\r | |
617 | } else {\r | |
618 | *Result = UINT32_ERROR;\r | |
619 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
620 | }\r | |
621 | \r | |
622 | return Status;\r | |
623 | }\r | |
624 | \r | |
625 | /**\r | |
626 | INT16 -> UINTN conversion\r | |
627 | \r | |
628 | Converts the value specified by Operand to a value specified by Result type\r | |
629 | and stores the converted value into the caller allocated output buffer\r | |
630 | specified by Result. The caller must pass in a Result buffer that is at\r | |
631 | least as large as the Result type.\r | |
632 | \r | |
633 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
634 | \r | |
635 | If the conversion results in an overflow or an underflow condition, then\r | |
636 | Result is set to UINTN_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
637 | \r | |
638 | @param[in] Operand Operand to be converted to new type\r | |
639 | @param[out] Result Pointer to the result of conversion\r | |
640 | \r | |
641 | @retval RETURN_SUCCESS Successful conversion\r | |
642 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
643 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
644 | **/\r | |
645 | RETURN_STATUS\r | |
646 | EFIAPI\r | |
647 | SafeInt16ToUintn (\r | |
648 | IN INT16 Operand,\r | |
649 | OUT UINTN *Result\r | |
650 | )\r | |
651 | {\r | |
652 | RETURN_STATUS Status;\r | |
653 | \r | |
654 | if (Result == NULL) {\r | |
655 | return RETURN_INVALID_PARAMETER;\r | |
656 | }\r | |
657 | \r | |
658 | if (Operand >= 0) {\r | |
659 | *Result = (UINTN)Operand;\r | |
660 | Status = RETURN_SUCCESS;\r | |
661 | } else {\r | |
662 | *Result = UINTN_ERROR;\r | |
663 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
664 | }\r | |
665 | \r | |
666 | return Status;\r | |
667 | }\r | |
668 | \r | |
669 | /**\r | |
670 | INT16 -> UINT64 conversion\r | |
671 | \r | |
672 | Converts the value specified by Operand to a value specified by Result type\r | |
673 | and stores the converted value into the caller allocated output buffer\r | |
674 | specified by Result. The caller must pass in a Result buffer that is at\r | |
675 | least as large as the Result type.\r | |
676 | \r | |
677 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
678 | \r | |
679 | If the conversion results in an overflow or an underflow condition, then\r | |
680 | Result is set to UINT64_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
681 | \r | |
682 | @param[in] Operand Operand to be converted to new type\r | |
683 | @param[out] Result Pointer to the result of conversion\r | |
684 | \r | |
685 | @retval RETURN_SUCCESS Successful conversion\r | |
686 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
687 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
688 | **/\r | |
689 | RETURN_STATUS\r | |
690 | EFIAPI\r | |
691 | SafeInt16ToUint64 (\r | |
692 | IN INT16 Operand,\r | |
693 | OUT UINT64 *Result\r | |
694 | )\r | |
695 | {\r | |
696 | RETURN_STATUS Status;\r | |
697 | \r | |
698 | if (Result == NULL) {\r | |
699 | return RETURN_INVALID_PARAMETER;\r | |
700 | }\r | |
701 | \r | |
702 | if (Operand >= 0) {\r | |
703 | *Result = (UINT64)Operand;\r | |
704 | Status = RETURN_SUCCESS;\r | |
705 | } else {\r | |
706 | *Result = UINT64_ERROR;\r | |
707 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
708 | }\r | |
709 | \r | |
710 | return Status;\r | |
711 | }\r | |
712 | \r | |
713 | /**\r | |
714 | UINT16 -> INT8 conversion\r | |
715 | \r | |
716 | Converts the value specified by Operand to a value specified by Result type\r | |
717 | and stores the converted value into the caller allocated output buffer\r | |
718 | specified by Result. The caller must pass in a Result buffer that is at\r | |
719 | least as large as the Result type.\r | |
720 | \r | |
721 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
722 | \r | |
723 | If the conversion results in an overflow or an underflow condition, then\r | |
724 | Result is set to INT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
725 | \r | |
726 | @param[in] Operand Operand to be converted to new type\r | |
727 | @param[out] Result Pointer to the result of conversion\r | |
728 | \r | |
729 | @retval RETURN_SUCCESS Successful conversion\r | |
730 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
731 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
732 | **/\r | |
733 | RETURN_STATUS\r | |
734 | EFIAPI\r | |
735 | SafeUint16ToInt8 (\r | |
736 | IN UINT16 Operand,\r | |
737 | OUT INT8 *Result\r | |
738 | )\r | |
739 | {\r | |
740 | RETURN_STATUS Status;\r | |
741 | \r | |
742 | if (Result == NULL) {\r | |
743 | return RETURN_INVALID_PARAMETER;\r | |
744 | }\r | |
745 | \r | |
746 | if (Operand <= MAX_INT8) {\r | |
747 | *Result = (INT8)Operand;\r | |
748 | Status = RETURN_SUCCESS;\r | |
749 | } else {\r | |
750 | *Result = INT8_ERROR;\r | |
751 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
752 | }\r | |
753 | \r | |
754 | return Status;\r | |
755 | }\r | |
756 | \r | |
757 | /**\r | |
758 | UINT16 -> CHAR8 conversion\r | |
759 | \r | |
760 | Converts the value specified by Operand to a value specified by Result type\r | |
761 | and stores the converted value into the caller allocated output buffer\r | |
762 | specified by Result. The caller must pass in a Result buffer that is at\r | |
763 | least as large as the Result type.\r | |
764 | \r | |
765 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
766 | \r | |
767 | If the conversion results in an overflow or an underflow condition, then\r | |
768 | Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
769 | \r | |
770 | @param[in] Operand Operand to be converted to new type\r | |
771 | @param[out] Result Pointer to the result of conversion\r | |
772 | \r | |
773 | @retval RETURN_SUCCESS Successful conversion\r | |
774 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
775 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
776 | **/\r | |
777 | RETURN_STATUS\r | |
778 | EFIAPI\r | |
779 | SafeUint16ToChar8 (\r | |
780 | IN UINT16 Operand,\r | |
781 | OUT CHAR8 *Result\r | |
782 | )\r | |
783 | {\r | |
784 | RETURN_STATUS Status;\r | |
785 | \r | |
786 | if (Result == NULL) {\r | |
787 | return RETURN_INVALID_PARAMETER;\r | |
788 | }\r | |
789 | \r | |
790 | if (Operand <= MAX_INT8) {\r | |
791 | *Result = (INT8)Operand;\r | |
792 | Status = RETURN_SUCCESS;\r | |
793 | } else {\r | |
794 | *Result = CHAR8_ERROR;\r | |
795 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
796 | }\r | |
797 | \r | |
798 | return Status;\r | |
799 | }\r | |
800 | \r | |
801 | /**\r | |
802 | UINT16 -> UINT8 conversion\r | |
803 | \r | |
804 | Converts the value specified by Operand to a value specified by Result type\r | |
805 | and stores the converted value into the caller allocated output buffer\r | |
806 | specified by Result. The caller must pass in a Result buffer that is at\r | |
807 | least as large as the Result type.\r | |
808 | \r | |
809 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
810 | \r | |
811 | If the conversion results in an overflow or an underflow condition, then\r | |
812 | Result is set to UINT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
813 | \r | |
814 | @param[in] Operand Operand to be converted to new type\r | |
815 | @param[out] Result Pointer to the result of conversion\r | |
816 | \r | |
817 | @retval RETURN_SUCCESS Successful conversion\r | |
818 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
819 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
820 | **/\r | |
821 | RETURN_STATUS\r | |
822 | EFIAPI\r | |
823 | SafeUint16ToUint8 (\r | |
824 | IN UINT16 Operand,\r | |
825 | OUT UINT8 *Result\r | |
826 | )\r | |
827 | {\r | |
828 | RETURN_STATUS Status;\r | |
829 | \r | |
830 | if (Result == NULL) {\r | |
831 | return RETURN_INVALID_PARAMETER;\r | |
832 | }\r | |
833 | \r | |
834 | if (Operand <= MAX_UINT8) {\r | |
835 | *Result = (UINT8)Operand;\r | |
836 | Status = RETURN_SUCCESS;\r | |
837 | } else {\r | |
838 | *Result = UINT8_ERROR;\r | |
839 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
840 | }\r | |
841 | \r | |
842 | return Status;\r | |
843 | }\r | |
844 | \r | |
845 | /**\r | |
846 | UINT16 -> INT16 conversion\r | |
847 | \r | |
848 | Converts the value specified by Operand to a value specified by Result type\r | |
849 | and stores the converted value into the caller allocated output buffer\r | |
850 | specified by Result. The caller must pass in a Result buffer that is at\r | |
851 | least as large as the Result type.\r | |
852 | \r | |
853 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
854 | \r | |
855 | If the conversion results in an overflow or an underflow condition, then\r | |
856 | Result is set to INT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
857 | \r | |
858 | @param[in] Operand Operand to be converted to new type\r | |
859 | @param[out] Result Pointer to the result of conversion\r | |
860 | \r | |
861 | @retval RETURN_SUCCESS Successful conversion\r | |
862 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
863 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
864 | **/\r | |
865 | RETURN_STATUS\r | |
866 | EFIAPI\r | |
867 | SafeUint16ToInt16 (\r | |
868 | IN UINT16 Operand,\r | |
869 | OUT INT16 *Result\r | |
870 | )\r | |
871 | {\r | |
872 | RETURN_STATUS Status;\r | |
873 | \r | |
874 | if (Result == NULL) {\r | |
875 | return RETURN_INVALID_PARAMETER;\r | |
876 | }\r | |
877 | \r | |
878 | if (Operand <= MAX_INT16) {\r | |
879 | *Result = (INT16)Operand;\r | |
880 | Status = RETURN_SUCCESS;\r | |
881 | } else {\r | |
882 | *Result = INT16_ERROR;\r | |
883 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
884 | }\r | |
885 | \r | |
886 | return Status;\r | |
887 | }\r | |
888 | \r | |
889 | /**\r | |
890 | INT32 -> INT8 conversion\r | |
891 | \r | |
892 | Converts the value specified by Operand to a value specified by Result type\r | |
893 | and stores the converted value into the caller allocated output buffer\r | |
894 | specified by Result. The caller must pass in a Result buffer that is at\r | |
895 | least as large as the Result type.\r | |
896 | \r | |
897 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
898 | \r | |
899 | If the conversion results in an overflow or an underflow condition, then\r | |
900 | Result is set to INT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
901 | \r | |
902 | @param[in] Operand Operand to be converted to new type\r | |
903 | @param[out] Result Pointer to the result of conversion\r | |
904 | \r | |
905 | @retval RETURN_SUCCESS Successful conversion\r | |
906 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
907 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
908 | **/\r | |
909 | RETURN_STATUS\r | |
910 | EFIAPI\r | |
911 | SafeInt32ToInt8 (\r | |
912 | IN INT32 Operand,\r | |
913 | OUT INT8 *Result\r | |
914 | )\r | |
915 | {\r | |
916 | RETURN_STATUS Status;\r | |
917 | \r | |
918 | if (Result == NULL) {\r | |
919 | return RETURN_INVALID_PARAMETER;\r | |
920 | }\r | |
921 | \r | |
922 | if ((Operand >= MIN_INT8) && (Operand <= MAX_INT8)) {\r | |
923 | *Result = (INT8)Operand;\r | |
924 | Status = RETURN_SUCCESS;\r | |
925 | } else {\r | |
926 | *Result = INT8_ERROR;\r | |
927 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
928 | }\r | |
929 | \r | |
930 | return Status;\r | |
931 | }\r | |
932 | \r | |
933 | /**\r | |
934 | INT32 -> CHAR8 conversion\r | |
935 | \r | |
936 | Converts the value specified by Operand to a value specified by Result type\r | |
937 | and stores the converted value into the caller allocated output buffer\r | |
938 | specified by Result. The caller must pass in a Result buffer that is at\r | |
939 | least as large as the Result type.\r | |
940 | \r | |
941 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
942 | \r | |
943 | If the conversion results in an overflow or an underflow condition, then\r | |
944 | Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
945 | \r | |
946 | @param[in] Operand Operand to be converted to new type\r | |
947 | @param[out] Result Pointer to the result of conversion\r | |
948 | \r | |
949 | @retval RETURN_SUCCESS Successful conversion\r | |
950 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
951 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
952 | **/\r | |
953 | RETURN_STATUS\r | |
954 | EFIAPI\r | |
955 | SafeInt32ToChar8 (\r | |
956 | IN INT32 Operand,\r | |
957 | OUT CHAR8 *Result\r | |
958 | )\r | |
959 | {\r | |
960 | RETURN_STATUS Status;\r | |
961 | \r | |
962 | if (Result == NULL) {\r | |
963 | return RETURN_INVALID_PARAMETER;\r | |
964 | }\r | |
965 | \r | |
966 | if ((Operand >= 0) && (Operand <= MAX_INT8)) {\r | |
967 | *Result = (CHAR8)Operand;\r | |
968 | Status = RETURN_SUCCESS;\r | |
969 | } else {\r | |
970 | *Result = CHAR8_ERROR;\r | |
971 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
972 | }\r | |
973 | \r | |
974 | return Status;\r | |
975 | }\r | |
976 | \r | |
977 | /**\r | |
978 | INT32 -> UINT8 conversion\r | |
979 | \r | |
980 | Converts the value specified by Operand to a value specified by Result type\r | |
981 | and stores the converted value into the caller allocated output buffer\r | |
982 | specified by Result. The caller must pass in a Result buffer that is at\r | |
983 | least as large as the Result type.\r | |
984 | \r | |
985 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
986 | \r | |
987 | If the conversion results in an overflow or an underflow condition, then\r | |
988 | Result is set to UINT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
989 | \r | |
990 | @param[in] Operand Operand to be converted to new type\r | |
991 | @param[out] Result Pointer to the result of conversion\r | |
992 | \r | |
993 | @retval RETURN_SUCCESS Successful conversion\r | |
994 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
995 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
996 | **/\r | |
997 | RETURN_STATUS\r | |
998 | EFIAPI\r | |
999 | SafeInt32ToUint8 (\r | |
1000 | IN INT32 Operand,\r | |
1001 | OUT UINT8 *Result\r | |
1002 | )\r | |
1003 | {\r | |
1004 | RETURN_STATUS Status;\r | |
1005 | \r | |
1006 | if (Result == NULL) {\r | |
1007 | return RETURN_INVALID_PARAMETER;\r | |
1008 | }\r | |
1009 | \r | |
1010 | if ((Operand >= 0) && (Operand <= MAX_UINT8)) {\r | |
1011 | *Result = (UINT8)Operand;\r | |
1012 | Status = RETURN_SUCCESS;\r | |
1013 | } else {\r | |
1014 | *Result = UINT8_ERROR;\r | |
1015 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1016 | }\r | |
1017 | \r | |
1018 | return Status;\r | |
1019 | }\r | |
1020 | \r | |
1021 | /**\r | |
1022 | INT32 -> INT16 conversion\r | |
1023 | \r | |
1024 | Converts the value specified by Operand to a value specified by Result type\r | |
1025 | and stores the converted value into the caller allocated output buffer\r | |
1026 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1027 | least as large as the Result type.\r | |
1028 | \r | |
1029 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1030 | \r | |
1031 | If the conversion results in an overflow or an underflow condition, then\r | |
1032 | Result is set to INT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1033 | \r | |
1034 | @param[in] Operand Operand to be converted to new type\r | |
1035 | @param[out] Result Pointer to the result of conversion\r | |
1036 | \r | |
1037 | @retval RETURN_SUCCESS Successful conversion\r | |
1038 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1039 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1040 | **/\r | |
1041 | RETURN_STATUS\r | |
1042 | EFIAPI\r | |
1043 | SafeInt32ToInt16 (\r | |
1044 | IN INT32 Operand,\r | |
1045 | OUT INT16 *Result\r | |
1046 | )\r | |
1047 | {\r | |
1048 | RETURN_STATUS Status;\r | |
1049 | \r | |
1050 | if (Result == NULL) {\r | |
1051 | return RETURN_INVALID_PARAMETER;\r | |
1052 | }\r | |
1053 | \r | |
1054 | if ((Operand >= MIN_INT16) && (Operand <= MAX_INT16)) {\r | |
1055 | *Result = (INT16)Operand;\r | |
1056 | Status = RETURN_SUCCESS;\r | |
1057 | } else {\r | |
1058 | *Result = INT16_ERROR;\r | |
1059 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1060 | }\r | |
1061 | \r | |
1062 | return Status;\r | |
1063 | }\r | |
1064 | \r | |
1065 | /**\r | |
1066 | INT32 -> UINT16 conversion\r | |
1067 | \r | |
1068 | Converts the value specified by Operand to a value specified by Result type\r | |
1069 | and stores the converted value into the caller allocated output buffer\r | |
1070 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1071 | least as large as the Result type.\r | |
1072 | \r | |
1073 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1074 | \r | |
1075 | If the conversion results in an overflow or an underflow condition, then\r | |
1076 | Result is set to UINT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1077 | \r | |
1078 | @param[in] Operand Operand to be converted to new type\r | |
1079 | @param[out] Result Pointer to the result of conversion\r | |
1080 | \r | |
1081 | @retval RETURN_SUCCESS Successful conversion\r | |
1082 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1083 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1084 | **/\r | |
1085 | RETURN_STATUS\r | |
1086 | EFIAPI\r | |
1087 | SafeInt32ToUint16 (\r | |
1088 | IN INT32 Operand,\r | |
1089 | OUT UINT16 *Result\r | |
1090 | )\r | |
1091 | {\r | |
1092 | RETURN_STATUS Status;\r | |
1093 | \r | |
1094 | if (Result == NULL) {\r | |
1095 | return RETURN_INVALID_PARAMETER;\r | |
1096 | }\r | |
1097 | \r | |
1098 | if ((Operand >= 0) && (Operand <= MAX_UINT16)) {\r | |
1099 | *Result = (UINT16)Operand;\r | |
1100 | Status = RETURN_SUCCESS;\r | |
1101 | } else {\r | |
1102 | *Result = UINT16_ERROR;\r | |
1103 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1104 | }\r | |
1105 | \r | |
1106 | return Status;\r | |
1107 | }\r | |
1108 | \r | |
1109 | /**\r | |
1110 | INT32 -> UINT32 conversion\r | |
1111 | \r | |
1112 | Converts the value specified by Operand to a value specified by Result type\r | |
1113 | and stores the converted value into the caller allocated output buffer\r | |
1114 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1115 | least as large as the Result type.\r | |
1116 | \r | |
1117 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1118 | \r | |
1119 | If the conversion results in an overflow or an underflow condition, then\r | |
1120 | Result is set to UINT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1121 | \r | |
1122 | @param[in] Operand Operand to be converted to new type\r | |
1123 | @param[out] Result Pointer to the result of conversion\r | |
1124 | \r | |
1125 | @retval RETURN_SUCCESS Successful conversion\r | |
1126 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1127 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1128 | **/\r | |
1129 | RETURN_STATUS\r | |
1130 | EFIAPI\r | |
1131 | SafeInt32ToUint32 (\r | |
1132 | IN INT32 Operand,\r | |
1133 | OUT UINT32 *Result\r | |
1134 | )\r | |
1135 | {\r | |
1136 | RETURN_STATUS Status;\r | |
1137 | \r | |
1138 | if (Result == NULL) {\r | |
1139 | return RETURN_INVALID_PARAMETER;\r | |
1140 | }\r | |
1141 | \r | |
1142 | if (Operand >= 0) {\r | |
1143 | *Result = (UINT32)Operand;\r | |
1144 | Status = RETURN_SUCCESS;\r | |
1145 | } else {\r | |
1146 | *Result = UINT32_ERROR;\r | |
1147 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1148 | }\r | |
1149 | \r | |
1150 | return Status;\r | |
1151 | }\r | |
1152 | \r | |
1153 | /**\r | |
1154 | INT32 -> UINT64 conversion\r | |
1155 | \r | |
1156 | Converts the value specified by Operand to a value specified by Result type\r | |
1157 | and stores the converted value into the caller allocated output buffer\r | |
1158 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1159 | least as large as the Result type.\r | |
1160 | \r | |
1161 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1162 | \r | |
1163 | If the conversion results in an overflow or an underflow condition, then\r | |
1164 | Result is set to UINT64_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1165 | \r | |
1166 | @param[in] Operand Operand to be converted to new type\r | |
1167 | @param[out] Result Pointer to the result of conversion\r | |
1168 | \r | |
1169 | @retval RETURN_SUCCESS Successful conversion\r | |
1170 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1171 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1172 | **/\r | |
1173 | RETURN_STATUS\r | |
1174 | EFIAPI\r | |
1175 | SafeInt32ToUint64 (\r | |
1176 | IN INT32 Operand,\r | |
1177 | OUT UINT64 *Result\r | |
1178 | )\r | |
1179 | {\r | |
1180 | RETURN_STATUS Status;\r | |
1181 | \r | |
1182 | if (Result == NULL) {\r | |
1183 | return RETURN_INVALID_PARAMETER;\r | |
1184 | }\r | |
1185 | \r | |
1186 | if (Operand >= 0) {\r | |
1187 | *Result = (UINT64)Operand;\r | |
1188 | Status = RETURN_SUCCESS;\r | |
1189 | } else {\r | |
1190 | *Result = UINT64_ERROR;\r | |
1191 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1192 | }\r | |
1193 | \r | |
1194 | return Status;\r | |
1195 | }\r | |
1196 | \r | |
1197 | /**\r | |
1198 | UINT32 -> INT8 conversion\r | |
1199 | \r | |
1200 | Converts the value specified by Operand to a value specified by Result type\r | |
1201 | and stores the converted value into the caller allocated output buffer\r | |
1202 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1203 | least as large as the Result type.\r | |
1204 | \r | |
1205 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1206 | \r | |
1207 | If the conversion results in an overflow or an underflow condition, then\r | |
1208 | Result is set to INT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1209 | \r | |
1210 | @param[in] Operand Operand to be converted to new type\r | |
1211 | @param[out] Result Pointer to the result of conversion\r | |
1212 | \r | |
1213 | @retval RETURN_SUCCESS Successful conversion\r | |
1214 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1215 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1216 | **/\r | |
1217 | RETURN_STATUS\r | |
1218 | EFIAPI\r | |
1219 | SafeUint32ToInt8 (\r | |
1220 | IN UINT32 Operand,\r | |
1221 | OUT INT8 *Result\r | |
1222 | )\r | |
1223 | {\r | |
1224 | RETURN_STATUS Status;\r | |
1225 | \r | |
1226 | if (Result == NULL) {\r | |
1227 | return RETURN_INVALID_PARAMETER;\r | |
1228 | }\r | |
1229 | \r | |
1230 | if (Operand <= MAX_INT8) {\r | |
1231 | *Result = (INT8)Operand;\r | |
1232 | Status = RETURN_SUCCESS;\r | |
1233 | } else {\r | |
1234 | *Result = INT8_ERROR;\r | |
1235 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1236 | }\r | |
1237 | \r | |
1238 | return Status;\r | |
1239 | }\r | |
1240 | \r | |
1241 | /**\r | |
1242 | UINT32 -> CHAR8 conversion\r | |
1243 | \r | |
1244 | Converts the value specified by Operand to a value specified by Result type\r | |
1245 | and stores the converted value into the caller allocated output buffer\r | |
1246 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1247 | least as large as the Result type.\r | |
1248 | \r | |
1249 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1250 | \r | |
1251 | If the conversion results in an overflow or an underflow condition, then\r | |
1252 | Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1253 | \r | |
1254 | @param[in] Operand Operand to be converted to new type\r | |
1255 | @param[out] Result Pointer to the result of conversion\r | |
1256 | \r | |
1257 | @retval RETURN_SUCCESS Successful conversion\r | |
1258 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1259 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1260 | **/\r | |
1261 | RETURN_STATUS\r | |
1262 | EFIAPI\r | |
1263 | SafeUint32ToChar8 (\r | |
1264 | IN UINT32 Operand,\r | |
1265 | OUT CHAR8 *Result\r | |
1266 | )\r | |
1267 | {\r | |
1268 | RETURN_STATUS Status;\r | |
1269 | \r | |
1270 | if (Result == NULL) {\r | |
1271 | return RETURN_INVALID_PARAMETER;\r | |
1272 | }\r | |
1273 | \r | |
1274 | if (Operand <= MAX_INT8) {\r | |
1275 | *Result = (INT8)Operand;\r | |
1276 | Status = RETURN_SUCCESS;\r | |
1277 | } else {\r | |
1278 | *Result = CHAR8_ERROR;\r | |
1279 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1280 | }\r | |
1281 | \r | |
1282 | return Status;\r | |
1283 | }\r | |
1284 | \r | |
1285 | /**\r | |
1286 | UINT32 -> UINT8 conversion\r | |
1287 | \r | |
1288 | Converts the value specified by Operand to a value specified by Result type\r | |
1289 | and stores the converted value into the caller allocated output buffer\r | |
1290 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1291 | least as large as the Result type.\r | |
1292 | \r | |
1293 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1294 | \r | |
1295 | If the conversion results in an overflow or an underflow condition, then\r | |
1296 | Result is set to UINT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1297 | \r | |
1298 | @param[in] Operand Operand to be converted to new type\r | |
1299 | @param[out] Result Pointer to the result of conversion\r | |
1300 | \r | |
1301 | @retval RETURN_SUCCESS Successful conversion\r | |
1302 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1303 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1304 | **/\r | |
1305 | RETURN_STATUS\r | |
1306 | EFIAPI\r | |
1307 | SafeUint32ToUint8 (\r | |
1308 | IN UINT32 Operand,\r | |
1309 | OUT UINT8 *Result\r | |
1310 | )\r | |
1311 | {\r | |
1312 | RETURN_STATUS Status;\r | |
1313 | \r | |
1314 | if (Result == NULL) {\r | |
1315 | return RETURN_INVALID_PARAMETER;\r | |
1316 | }\r | |
1317 | \r | |
1318 | if (Operand <= MAX_UINT8) {\r | |
1319 | *Result = (UINT8)Operand;\r | |
1320 | Status = RETURN_SUCCESS;\r | |
1321 | } else {\r | |
1322 | *Result = UINT8_ERROR;\r | |
1323 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1324 | }\r | |
1325 | \r | |
1326 | return Status;\r | |
1327 | }\r | |
1328 | \r | |
1329 | /**\r | |
1330 | UINT32 -> INT16 conversion\r | |
1331 | \r | |
1332 | Converts the value specified by Operand to a value specified by Result type\r | |
1333 | and stores the converted value into the caller allocated output buffer\r | |
1334 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1335 | least as large as the Result type.\r | |
1336 | \r | |
1337 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1338 | \r | |
1339 | If the conversion results in an overflow or an underflow condition, then\r | |
1340 | Result is set to INT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1341 | \r | |
1342 | @param[in] Operand Operand to be converted to new type\r | |
1343 | @param[out] Result Pointer to the result of conversion\r | |
1344 | \r | |
1345 | @retval RETURN_SUCCESS Successful conversion\r | |
1346 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1347 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1348 | **/\r | |
1349 | RETURN_STATUS\r | |
1350 | EFIAPI\r | |
1351 | SafeUint32ToInt16 (\r | |
1352 | IN UINT32 Operand,\r | |
1353 | OUT INT16 *Result\r | |
1354 | )\r | |
1355 | {\r | |
1356 | RETURN_STATUS Status;\r | |
1357 | \r | |
1358 | if (Result == NULL) {\r | |
1359 | return RETURN_INVALID_PARAMETER;\r | |
1360 | }\r | |
1361 | \r | |
1362 | if (Operand <= MAX_INT16) {\r | |
1363 | *Result = (INT16)Operand;\r | |
1364 | Status = RETURN_SUCCESS;\r | |
1365 | } else {\r | |
1366 | *Result = INT16_ERROR;\r | |
1367 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1368 | }\r | |
1369 | \r | |
1370 | return Status;\r | |
1371 | }\r | |
1372 | \r | |
1373 | /**\r | |
1374 | UINT32 -> UINT16 conversion\r | |
1375 | \r | |
1376 | Converts the value specified by Operand to a value specified by Result type\r | |
1377 | and stores the converted value into the caller allocated output buffer\r | |
1378 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1379 | least as large as the Result type.\r | |
1380 | \r | |
1381 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1382 | \r | |
1383 | If the conversion results in an overflow or an underflow condition, then\r | |
1384 | Result is set to UINT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1385 | \r | |
1386 | @param[in] Operand Operand to be converted to new type\r | |
1387 | @param[out] Result Pointer to the result of conversion\r | |
1388 | \r | |
1389 | @retval RETURN_SUCCESS Successful conversion\r | |
1390 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1391 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1392 | **/\r | |
1393 | RETURN_STATUS\r | |
1394 | EFIAPI\r | |
1395 | SafeUint32ToUint16 (\r | |
1396 | IN UINT32 Operand,\r | |
1397 | OUT UINT16 *Result\r | |
1398 | )\r | |
1399 | {\r | |
1400 | RETURN_STATUS Status;\r | |
1401 | \r | |
1402 | if (Result == NULL) {\r | |
1403 | return RETURN_INVALID_PARAMETER;\r | |
1404 | }\r | |
1405 | \r | |
1406 | if (Operand <= MAX_UINT16) {\r | |
1407 | *Result = (UINT16)Operand;\r | |
1408 | Status = RETURN_SUCCESS;\r | |
1409 | } else {\r | |
1410 | *Result = UINT16_ERROR;\r | |
1411 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1412 | }\r | |
1413 | \r | |
1414 | return Status;\r | |
1415 | }\r | |
1416 | \r | |
1417 | /**\r | |
1418 | UINT32 -> INT32 conversion\r | |
1419 | \r | |
1420 | Converts the value specified by Operand to a value specified by Result type\r | |
1421 | and stores the converted value into the caller allocated output buffer\r | |
1422 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1423 | least as large as the Result type.\r | |
1424 | \r | |
1425 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1426 | \r | |
1427 | If the conversion results in an overflow or an underflow condition, then\r | |
1428 | Result is set to INT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1429 | \r | |
1430 | @param[in] Operand Operand to be converted to new type\r | |
1431 | @param[out] Result Pointer to the result of conversion\r | |
1432 | \r | |
1433 | @retval RETURN_SUCCESS Successful conversion\r | |
1434 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1435 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1436 | **/\r | |
1437 | RETURN_STATUS\r | |
1438 | EFIAPI\r | |
1439 | SafeUint32ToInt32 (\r | |
1440 | IN UINT32 Operand,\r | |
1441 | OUT INT32 *Result\r | |
1442 | )\r | |
1443 | {\r | |
1444 | RETURN_STATUS Status;\r | |
1445 | \r | |
1446 | if (Result == NULL) {\r | |
1447 | return RETURN_INVALID_PARAMETER;\r | |
1448 | }\r | |
1449 | \r | |
1450 | if (Operand <= MAX_INT32) {\r | |
1451 | *Result = (INT32)Operand;\r | |
1452 | Status = RETURN_SUCCESS;\r | |
1453 | } else {\r | |
1454 | *Result = INT32_ERROR;\r | |
1455 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1456 | }\r | |
1457 | \r | |
1458 | return Status;\r | |
1459 | }\r | |
1460 | \r | |
1461 | /**\r | |
1462 | INTN -> INT8 conversion\r | |
1463 | \r | |
1464 | Converts the value specified by Operand to a value specified by Result type\r | |
1465 | and stores the converted value into the caller allocated output buffer\r | |
1466 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1467 | least as large as the Result type.\r | |
1468 | \r | |
1469 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1470 | \r | |
1471 | If the conversion results in an overflow or an underflow condition, then\r | |
1472 | Result is set to INT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1473 | \r | |
1474 | @param[in] Operand Operand to be converted to new type\r | |
1475 | @param[out] Result Pointer to the result of conversion\r | |
1476 | \r | |
1477 | @retval RETURN_SUCCESS Successful conversion\r | |
1478 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1479 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1480 | **/\r | |
1481 | RETURN_STATUS\r | |
1482 | EFIAPI\r | |
1483 | SafeIntnToInt8 (\r | |
1484 | IN INTN Operand,\r | |
1485 | OUT INT8 *Result\r | |
1486 | )\r | |
1487 | {\r | |
1488 | RETURN_STATUS Status;\r | |
1489 | \r | |
1490 | if (Result == NULL) {\r | |
1491 | return RETURN_INVALID_PARAMETER;\r | |
1492 | }\r | |
1493 | \r | |
1494 | if ((Operand >= MIN_INT8) && (Operand <= MAX_INT8)) {\r | |
1495 | *Result = (INT8)Operand;\r | |
1496 | Status = RETURN_SUCCESS;\r | |
1497 | } else {\r | |
1498 | *Result = INT8_ERROR;\r | |
1499 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1500 | }\r | |
1501 | \r | |
1502 | return Status;\r | |
1503 | }\r | |
1504 | \r | |
1505 | /**\r | |
1506 | INTN -> CHAR8 conversion\r | |
1507 | \r | |
1508 | Converts the value specified by Operand to a value specified by Result type\r | |
1509 | and stores the converted value into the caller allocated output buffer\r | |
1510 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1511 | least as large as the Result type.\r | |
1512 | \r | |
1513 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1514 | \r | |
1515 | If the conversion results in an overflow or an underflow condition, then\r | |
1516 | Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1517 | \r | |
1518 | @param[in] Operand Operand to be converted to new type\r | |
1519 | @param[out] Result Pointer to the result of conversion\r | |
1520 | \r | |
1521 | @retval RETURN_SUCCESS Successful conversion\r | |
1522 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1523 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1524 | **/\r | |
1525 | RETURN_STATUS\r | |
1526 | EFIAPI\r | |
1527 | SafeIntnToChar8 (\r | |
1528 | IN INTN Operand,\r | |
1529 | OUT CHAR8 *Result\r | |
1530 | )\r | |
1531 | {\r | |
1532 | RETURN_STATUS Status;\r | |
1533 | \r | |
1534 | if (Result == NULL) {\r | |
1535 | return RETURN_INVALID_PARAMETER;\r | |
1536 | }\r | |
1537 | \r | |
1538 | if ((Operand >= 0) && (Operand <= MAX_INT8)) {\r | |
1539 | *Result = (CHAR8)Operand;\r | |
1540 | Status = RETURN_SUCCESS;\r | |
1541 | } else {\r | |
1542 | *Result = CHAR8_ERROR;\r | |
1543 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1544 | }\r | |
1545 | \r | |
1546 | return Status;\r | |
1547 | }\r | |
1548 | \r | |
1549 | /**\r | |
1550 | INTN -> UINT8 conversion\r | |
1551 | \r | |
1552 | Converts the value specified by Operand to a value specified by Result type\r | |
1553 | and stores the converted value into the caller allocated output buffer\r | |
1554 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1555 | least as large as the Result type.\r | |
1556 | \r | |
1557 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1558 | \r | |
1559 | If the conversion results in an overflow or an underflow condition, then\r | |
1560 | Result is set to UINT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1561 | \r | |
1562 | @param[in] Operand Operand to be converted to new type\r | |
1563 | @param[out] Result Pointer to the result of conversion\r | |
1564 | \r | |
1565 | @retval RETURN_SUCCESS Successful conversion\r | |
1566 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1567 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1568 | **/\r | |
1569 | RETURN_STATUS\r | |
1570 | EFIAPI\r | |
1571 | SafeIntnToUint8 (\r | |
1572 | IN INTN Operand,\r | |
1573 | OUT UINT8 *Result\r | |
1574 | )\r | |
1575 | {\r | |
1576 | RETURN_STATUS Status;\r | |
1577 | \r | |
1578 | if (Result == NULL) {\r | |
1579 | return RETURN_INVALID_PARAMETER;\r | |
1580 | }\r | |
1581 | \r | |
1582 | if ((Operand >= 0) && (Operand <= MAX_UINT8)) {\r | |
1583 | *Result = (UINT8)Operand;\r | |
1584 | Status = RETURN_SUCCESS;\r | |
1585 | } else {\r | |
1586 | *Result = UINT8_ERROR;\r | |
1587 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1588 | }\r | |
1589 | \r | |
1590 | return Status;\r | |
1591 | }\r | |
1592 | \r | |
1593 | /**\r | |
1594 | INTN -> INT16 conversion\r | |
1595 | \r | |
1596 | Converts the value specified by Operand to a value specified by Result type\r | |
1597 | and stores the converted value into the caller allocated output buffer\r | |
1598 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1599 | least as large as the Result type.\r | |
1600 | \r | |
1601 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1602 | \r | |
1603 | If the conversion results in an overflow or an underflow condition, then\r | |
1604 | Result is set to INT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1605 | \r | |
1606 | @param[in] Operand Operand to be converted to new type\r | |
1607 | @param[out] Result Pointer to the result of conversion\r | |
1608 | \r | |
1609 | @retval RETURN_SUCCESS Successful conversion\r | |
1610 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1611 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1612 | **/\r | |
1613 | RETURN_STATUS\r | |
1614 | EFIAPI\r | |
1615 | SafeIntnToInt16 (\r | |
1616 | IN INTN Operand,\r | |
1617 | OUT INT16 *Result\r | |
1618 | )\r | |
1619 | {\r | |
1620 | RETURN_STATUS Status;\r | |
1621 | \r | |
1622 | if (Result == NULL) {\r | |
1623 | return RETURN_INVALID_PARAMETER;\r | |
1624 | }\r | |
1625 | \r | |
1626 | if ((Operand >= MIN_INT16) && (Operand <= MAX_INT16)) {\r | |
1627 | *Result = (INT16)Operand;\r | |
1628 | Status = RETURN_SUCCESS;\r | |
1629 | } else {\r | |
1630 | *Result = INT16_ERROR;\r | |
1631 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1632 | }\r | |
1633 | \r | |
1634 | return Status;\r | |
1635 | }\r | |
1636 | \r | |
1637 | /**\r | |
1638 | INTN -> UINT16 conversion\r | |
1639 | \r | |
1640 | Converts the value specified by Operand to a value specified by Result type\r | |
1641 | and stores the converted value into the caller allocated output buffer\r | |
1642 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1643 | least as large as the Result type.\r | |
1644 | \r | |
1645 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1646 | \r | |
1647 | If the conversion results in an overflow or an underflow condition, then\r | |
1648 | Result is set to UINT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1649 | \r | |
1650 | @param[in] Operand Operand to be converted to new type\r | |
1651 | @param[out] Result Pointer to the result of conversion\r | |
1652 | \r | |
1653 | @retval RETURN_SUCCESS Successful conversion\r | |
1654 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1655 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1656 | **/\r | |
1657 | RETURN_STATUS\r | |
1658 | EFIAPI\r | |
1659 | SafeIntnToUint16 (\r | |
1660 | IN INTN Operand,\r | |
1661 | OUT UINT16 *Result\r | |
1662 | )\r | |
1663 | {\r | |
1664 | RETURN_STATUS Status;\r | |
1665 | \r | |
1666 | if (Result == NULL) {\r | |
1667 | return RETURN_INVALID_PARAMETER;\r | |
1668 | }\r | |
1669 | \r | |
1670 | if ((Operand >= 0) && (Operand <= MAX_UINT16)) {\r | |
1671 | *Result = (UINT16)Operand;\r | |
1672 | Status = RETURN_SUCCESS;\r | |
1673 | } else {\r | |
1674 | *Result = UINT16_ERROR;\r | |
1675 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1676 | }\r | |
1677 | \r | |
1678 | return Status;\r | |
1679 | }\r | |
1680 | \r | |
1681 | /**\r | |
1682 | INTN -> UINTN conversion\r | |
1683 | \r | |
1684 | Converts the value specified by Operand to a value specified by Result type\r | |
1685 | and stores the converted value into the caller allocated output buffer\r | |
1686 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1687 | least as large as the Result type.\r | |
1688 | \r | |
1689 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1690 | \r | |
1691 | If the conversion results in an overflow or an underflow condition, then\r | |
1692 | Result is set to UINTN_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1693 | \r | |
1694 | @param[in] Operand Operand to be converted to new type\r | |
1695 | @param[out] Result Pointer to the result of conversion\r | |
1696 | \r | |
1697 | @retval RETURN_SUCCESS Successful conversion\r | |
1698 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1699 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1700 | **/\r | |
1701 | RETURN_STATUS\r | |
1702 | EFIAPI\r | |
1703 | SafeIntnToUintn (\r | |
1704 | IN INTN Operand,\r | |
1705 | OUT UINTN *Result\r | |
1706 | )\r | |
1707 | {\r | |
1708 | RETURN_STATUS Status;\r | |
1709 | \r | |
1710 | if (Result == NULL) {\r | |
1711 | return RETURN_INVALID_PARAMETER;\r | |
1712 | }\r | |
1713 | \r | |
1714 | if (Operand >= 0) {\r | |
1715 | *Result = (UINTN)Operand;\r | |
1716 | Status = RETURN_SUCCESS;\r | |
1717 | } else {\r | |
1718 | *Result = UINTN_ERROR;\r | |
1719 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1720 | }\r | |
1721 | \r | |
1722 | return Status;\r | |
1723 | }\r | |
1724 | \r | |
1725 | /**\r | |
1726 | INTN -> UINT64 conversion\r | |
1727 | \r | |
1728 | Converts the value specified by Operand to a value specified by Result type\r | |
1729 | and stores the converted value into the caller allocated output buffer\r | |
1730 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1731 | least as large as the Result type.\r | |
1732 | \r | |
1733 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1734 | \r | |
1735 | If the conversion results in an overflow or an underflow condition, then\r | |
1736 | Result is set to UINT64_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1737 | \r | |
1738 | @param[in] Operand Operand to be converted to new type\r | |
1739 | @param[out] Result Pointer to the result of conversion\r | |
1740 | \r | |
1741 | @retval RETURN_SUCCESS Successful conversion\r | |
1742 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1743 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1744 | **/\r | |
1745 | RETURN_STATUS\r | |
1746 | EFIAPI\r | |
1747 | SafeIntnToUint64 (\r | |
1748 | IN INTN Operand,\r | |
1749 | OUT UINT64 *Result\r | |
1750 | )\r | |
1751 | {\r | |
1752 | RETURN_STATUS Status;\r | |
1753 | \r | |
1754 | if (Result == NULL) {\r | |
1755 | return RETURN_INVALID_PARAMETER;\r | |
1756 | }\r | |
1757 | \r | |
1758 | if (Operand >= 0) {\r | |
1759 | *Result = (UINT64)Operand;\r | |
1760 | Status = RETURN_SUCCESS;\r | |
1761 | } else {\r | |
1762 | *Result = UINT64_ERROR;\r | |
1763 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1764 | }\r | |
1765 | \r | |
1766 | return Status;\r | |
1767 | }\r | |
1768 | \r | |
1769 | /**\r | |
1770 | UINTN -> INT8 conversion\r | |
1771 | \r | |
1772 | Converts the value specified by Operand to a value specified by Result type\r | |
1773 | and stores the converted value into the caller allocated output buffer\r | |
1774 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1775 | least as large as the Result type.\r | |
1776 | \r | |
1777 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1778 | \r | |
1779 | If the conversion results in an overflow or an underflow condition, then\r | |
1780 | Result is set to INT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1781 | \r | |
1782 | @param[in] Operand Operand to be converted to new type\r | |
1783 | @param[out] Result Pointer to the result of conversion\r | |
1784 | \r | |
1785 | @retval RETURN_SUCCESS Successful conversion\r | |
1786 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1787 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1788 | **/\r | |
1789 | RETURN_STATUS\r | |
1790 | EFIAPI\r | |
1791 | SafeUintnToInt8 (\r | |
1792 | IN UINTN Operand,\r | |
1793 | OUT INT8 *Result\r | |
1794 | )\r | |
1795 | {\r | |
1796 | RETURN_STATUS Status;\r | |
1797 | \r | |
1798 | if (Result == NULL) {\r | |
1799 | return RETURN_INVALID_PARAMETER;\r | |
1800 | }\r | |
1801 | \r | |
1802 | if (Operand <= MAX_INT8) {\r | |
1803 | *Result = (INT8)Operand;\r | |
1804 | Status = RETURN_SUCCESS;\r | |
1805 | } else {\r | |
1806 | *Result = INT8_ERROR;\r | |
1807 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1808 | }\r | |
1809 | \r | |
1810 | return Status;\r | |
1811 | }\r | |
1812 | \r | |
1813 | /**\r | |
1814 | UINTN -> CHAR8 conversion\r | |
1815 | \r | |
1816 | Converts the value specified by Operand to a value specified by Result type\r | |
1817 | and stores the converted value into the caller allocated output buffer\r | |
1818 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1819 | least as large as the Result type.\r | |
1820 | \r | |
1821 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1822 | \r | |
1823 | If the conversion results in an overflow or an underflow condition, then\r | |
1824 | Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1825 | \r | |
1826 | @param[in] Operand Operand to be converted to new type\r | |
1827 | @param[out] Result Pointer to the result of conversion\r | |
1828 | \r | |
1829 | @retval RETURN_SUCCESS Successful conversion\r | |
1830 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1831 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1832 | **/\r | |
1833 | RETURN_STATUS\r | |
1834 | EFIAPI\r | |
1835 | SafeUintnToChar8 (\r | |
1836 | IN UINTN Operand,\r | |
1837 | OUT CHAR8 *Result\r | |
1838 | )\r | |
1839 | {\r | |
1840 | RETURN_STATUS Status;\r | |
1841 | \r | |
1842 | if (Result == NULL) {\r | |
1843 | return RETURN_INVALID_PARAMETER;\r | |
1844 | }\r | |
1845 | \r | |
1846 | if (Operand <= MAX_INT8) {\r | |
1847 | *Result = (INT8)Operand;\r | |
1848 | Status = RETURN_SUCCESS;\r | |
1849 | } else {\r | |
1850 | *Result = CHAR8_ERROR;\r | |
1851 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1852 | }\r | |
1853 | \r | |
1854 | return Status;\r | |
1855 | }\r | |
1856 | \r | |
1857 | /**\r | |
1858 | UINTN -> UINT8 conversion\r | |
1859 | \r | |
1860 | Converts the value specified by Operand to a value specified by Result type\r | |
1861 | and stores the converted value into the caller allocated output buffer\r | |
1862 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1863 | least as large as the Result type.\r | |
1864 | \r | |
1865 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1866 | \r | |
1867 | If the conversion results in an overflow or an underflow condition, then\r | |
1868 | Result is set to UINT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1869 | \r | |
1870 | @param[in] Operand Operand to be converted to new type\r | |
1871 | @param[out] Result Pointer to the result of conversion\r | |
1872 | \r | |
1873 | @retval RETURN_SUCCESS Successful conversion\r | |
1874 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1875 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1876 | **/\r | |
1877 | RETURN_STATUS\r | |
1878 | EFIAPI\r | |
1879 | SafeUintnToUint8 (\r | |
1880 | IN UINTN Operand,\r | |
1881 | OUT UINT8 *Result\r | |
1882 | )\r | |
1883 | {\r | |
1884 | RETURN_STATUS Status;\r | |
1885 | \r | |
1886 | if (Result == NULL) {\r | |
1887 | return RETURN_INVALID_PARAMETER;\r | |
1888 | }\r | |
1889 | \r | |
1890 | if (Operand <= MAX_UINT8) {\r | |
1891 | *Result = (UINT8)Operand;\r | |
1892 | Status = RETURN_SUCCESS;\r | |
1893 | } else {\r | |
1894 | *Result = UINT8_ERROR;\r | |
1895 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1896 | }\r | |
1897 | \r | |
1898 | return Status;\r | |
1899 | }\r | |
1900 | \r | |
1901 | /**\r | |
1902 | UINTN -> INT16 conversion\r | |
1903 | \r | |
1904 | Converts the value specified by Operand to a value specified by Result type\r | |
1905 | and stores the converted value into the caller allocated output buffer\r | |
1906 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1907 | least as large as the Result type.\r | |
1908 | \r | |
1909 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1910 | \r | |
1911 | If the conversion results in an overflow or an underflow condition, then\r | |
1912 | Result is set to INT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1913 | \r | |
1914 | @param[in] Operand Operand to be converted to new type\r | |
1915 | @param[out] Result Pointer to the result of conversion\r | |
1916 | \r | |
1917 | @retval RETURN_SUCCESS Successful conversion\r | |
1918 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1919 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1920 | **/\r | |
1921 | RETURN_STATUS\r | |
1922 | EFIAPI\r | |
1923 | SafeUintnToInt16 (\r | |
1924 | IN UINTN Operand,\r | |
1925 | OUT INT16 *Result\r | |
1926 | )\r | |
1927 | {\r | |
1928 | RETURN_STATUS Status;\r | |
1929 | \r | |
1930 | if (Result == NULL) {\r | |
1931 | return RETURN_INVALID_PARAMETER;\r | |
1932 | }\r | |
1933 | \r | |
1934 | if (Operand <= MAX_INT16) {\r | |
1935 | *Result = (INT16)Operand;\r | |
1936 | Status = RETURN_SUCCESS;\r | |
1937 | } else {\r | |
1938 | *Result = INT16_ERROR;\r | |
1939 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1940 | }\r | |
1941 | \r | |
1942 | return Status;\r | |
1943 | }\r | |
1944 | \r | |
1945 | /**\r | |
1946 | UINTN -> UINT16 conversion\r | |
1947 | \r | |
1948 | Converts the value specified by Operand to a value specified by Result type\r | |
1949 | and stores the converted value into the caller allocated output buffer\r | |
1950 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1951 | least as large as the Result type.\r | |
1952 | \r | |
1953 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1954 | \r | |
1955 | If the conversion results in an overflow or an underflow condition, then\r | |
1956 | Result is set to UINT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
1957 | \r | |
1958 | @param[in] Operand Operand to be converted to new type\r | |
1959 | @param[out] Result Pointer to the result of conversion\r | |
1960 | \r | |
1961 | @retval RETURN_SUCCESS Successful conversion\r | |
1962 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
1963 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
1964 | **/\r | |
1965 | RETURN_STATUS\r | |
1966 | EFIAPI\r | |
1967 | SafeUintnToUint16 (\r | |
1968 | IN UINTN Operand,\r | |
1969 | OUT UINT16 *Result\r | |
1970 | )\r | |
1971 | {\r | |
1972 | RETURN_STATUS Status;\r | |
1973 | \r | |
1974 | if (Result == NULL) {\r | |
1975 | return RETURN_INVALID_PARAMETER;\r | |
1976 | }\r | |
1977 | \r | |
1978 | if (Operand <= MAX_UINT16) {\r | |
1979 | *Result = (UINT16)Operand;\r | |
1980 | Status = RETURN_SUCCESS;\r | |
1981 | } else {\r | |
1982 | *Result = UINT16_ERROR;\r | |
1983 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
1984 | }\r | |
1985 | \r | |
1986 | return Status;\r | |
1987 | }\r | |
1988 | \r | |
1989 | /**\r | |
1990 | UINTN -> INT32 conversion\r | |
1991 | \r | |
1992 | Converts the value specified by Operand to a value specified by Result type\r | |
1993 | and stores the converted value into the caller allocated output buffer\r | |
1994 | specified by Result. The caller must pass in a Result buffer that is at\r | |
1995 | least as large as the Result type.\r | |
1996 | \r | |
1997 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
1998 | \r | |
1999 | If the conversion results in an overflow or an underflow condition, then\r | |
2000 | Result is set to INT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2001 | \r | |
2002 | @param[in] Operand Operand to be converted to new type\r | |
2003 | @param[out] Result Pointer to the result of conversion\r | |
2004 | \r | |
2005 | @retval RETURN_SUCCESS Successful conversion\r | |
2006 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2007 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2008 | **/\r | |
2009 | RETURN_STATUS\r | |
2010 | EFIAPI\r | |
2011 | SafeUintnToInt32 (\r | |
2012 | IN UINTN Operand,\r | |
2013 | OUT INT32 *Result\r | |
2014 | )\r | |
2015 | {\r | |
2016 | RETURN_STATUS Status;\r | |
2017 | \r | |
2018 | if (Result == NULL) {\r | |
2019 | return RETURN_INVALID_PARAMETER;\r | |
2020 | }\r | |
2021 | \r | |
2022 | if (Operand <= MAX_INT32) {\r | |
2023 | *Result = (INT32)Operand;\r | |
2024 | Status = RETURN_SUCCESS;\r | |
2025 | } else {\r | |
2026 | *Result = INT32_ERROR;\r | |
2027 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2028 | }\r | |
2029 | \r | |
2030 | return Status;\r | |
2031 | }\r | |
2032 | \r | |
2033 | /**\r | |
2034 | UINTN -> INTN conversion\r | |
2035 | \r | |
2036 | Converts the value specified by Operand to a value specified by Result type\r | |
2037 | and stores the converted value into the caller allocated output buffer\r | |
2038 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2039 | least as large as the Result type.\r | |
2040 | \r | |
2041 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2042 | \r | |
2043 | If the conversion results in an overflow or an underflow condition, then\r | |
2044 | Result is set to INTN_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2045 | \r | |
2046 | @param[in] Operand Operand to be converted to new type\r | |
2047 | @param[out] Result Pointer to the result of conversion\r | |
2048 | \r | |
2049 | @retval RETURN_SUCCESS Successful conversion\r | |
2050 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2051 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2052 | **/\r | |
2053 | RETURN_STATUS\r | |
2054 | EFIAPI\r | |
2055 | SafeUintnToIntn (\r | |
2056 | IN UINTN Operand,\r | |
2057 | OUT INTN *Result\r | |
2058 | )\r | |
2059 | {\r | |
2060 | RETURN_STATUS Status;\r | |
2061 | \r | |
2062 | if (Result == NULL) {\r | |
2063 | return RETURN_INVALID_PARAMETER;\r | |
2064 | }\r | |
2065 | \r | |
2066 | if (Operand <= MAX_INTN) {\r | |
2067 | *Result = (INTN)Operand;\r | |
2068 | Status = RETURN_SUCCESS;\r | |
2069 | } else {\r | |
2070 | *Result = INTN_ERROR;\r | |
2071 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2072 | }\r | |
2073 | \r | |
2074 | return Status;\r | |
2075 | }\r | |
2076 | \r | |
2077 | /**\r | |
2078 | INT64 -> INT8 conversion\r | |
2079 | \r | |
2080 | Converts the value specified by Operand to a value specified by Result type\r | |
2081 | and stores the converted value into the caller allocated output buffer\r | |
2082 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2083 | least as large as the Result type.\r | |
2084 | \r | |
2085 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2086 | \r | |
2087 | If the conversion results in an overflow or an underflow condition, then\r | |
2088 | Result is set to INT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2089 | \r | |
2090 | @param[in] Operand Operand to be converted to new type\r | |
2091 | @param[out] Result Pointer to the result of conversion\r | |
2092 | \r | |
2093 | @retval RETURN_SUCCESS Successful conversion\r | |
2094 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2095 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2096 | **/\r | |
2097 | RETURN_STATUS\r | |
2098 | EFIAPI\r | |
2099 | SafeInt64ToInt8 (\r | |
2100 | IN INT64 Operand,\r | |
2101 | OUT INT8 *Result\r | |
2102 | )\r | |
2103 | {\r | |
2104 | RETURN_STATUS Status;\r | |
2105 | \r | |
2106 | if (Result == NULL) {\r | |
2107 | return RETURN_INVALID_PARAMETER;\r | |
2108 | }\r | |
2109 | \r | |
2110 | if ((Operand >= MIN_INT8) && (Operand <= MAX_INT8)) {\r | |
2111 | *Result = (INT8)Operand;\r | |
2112 | Status = RETURN_SUCCESS;\r | |
2113 | } else {\r | |
2114 | *Result = INT8_ERROR;\r | |
2115 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2116 | }\r | |
2117 | \r | |
2118 | return Status;\r | |
2119 | }\r | |
2120 | \r | |
2121 | /**\r | |
2122 | INT64 -> CHAR8 conversion\r | |
2123 | \r | |
2124 | Converts the value specified by Operand to a value specified by Result type\r | |
2125 | and stores the converted value into the caller allocated output buffer\r | |
2126 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2127 | least as large as the Result type.\r | |
2128 | \r | |
2129 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2130 | \r | |
2131 | If the conversion results in an overflow or an underflow condition, then\r | |
2132 | Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2133 | \r | |
2134 | @param[in] Operand Operand to be converted to new type\r | |
2135 | @param[out] Result Pointer to the result of conversion\r | |
2136 | \r | |
2137 | @retval RETURN_SUCCESS Successful conversion\r | |
2138 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2139 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2140 | **/\r | |
2141 | RETURN_STATUS\r | |
2142 | EFIAPI\r | |
2143 | SafeInt64ToChar8 (\r | |
2144 | IN INT64 Operand,\r | |
2145 | OUT CHAR8 *Result\r | |
2146 | )\r | |
2147 | {\r | |
2148 | RETURN_STATUS Status;\r | |
2149 | \r | |
2150 | if (Result == NULL) {\r | |
2151 | return RETURN_INVALID_PARAMETER;\r | |
2152 | }\r | |
2153 | \r | |
2154 | if ((Operand >= 0) && (Operand <= MAX_INT8)) {\r | |
2155 | *Result = (CHAR8)Operand;\r | |
2156 | Status = RETURN_SUCCESS;\r | |
2157 | } else {\r | |
2158 | *Result = CHAR8_ERROR;\r | |
2159 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2160 | }\r | |
2161 | \r | |
2162 | return Status;\r | |
2163 | }\r | |
2164 | \r | |
2165 | /**\r | |
2166 | INT64 -> UINT8 conversion\r | |
2167 | \r | |
2168 | Converts the value specified by Operand to a value specified by Result type\r | |
2169 | and stores the converted value into the caller allocated output buffer\r | |
2170 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2171 | least as large as the Result type.\r | |
2172 | \r | |
2173 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2174 | \r | |
2175 | If the conversion results in an overflow or an underflow condition, then\r | |
2176 | Result is set to UINT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2177 | \r | |
2178 | @param[in] Operand Operand to be converted to new type\r | |
2179 | @param[out] Result Pointer to the result of conversion\r | |
2180 | \r | |
2181 | @retval RETURN_SUCCESS Successful conversion\r | |
2182 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2183 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2184 | **/\r | |
2185 | RETURN_STATUS\r | |
2186 | EFIAPI\r | |
2187 | SafeInt64ToUint8 (\r | |
2188 | IN INT64 Operand,\r | |
2189 | OUT UINT8 *Result\r | |
2190 | )\r | |
2191 | {\r | |
2192 | RETURN_STATUS Status;\r | |
2193 | \r | |
2194 | if (Result == NULL) {\r | |
2195 | return RETURN_INVALID_PARAMETER;\r | |
2196 | }\r | |
2197 | \r | |
2198 | if ((Operand >= 0) && (Operand <= MAX_UINT8)) {\r | |
2199 | *Result = (UINT8)Operand;\r | |
2200 | Status = RETURN_SUCCESS;\r | |
2201 | } else {\r | |
2202 | *Result = UINT8_ERROR;\r | |
2203 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2204 | }\r | |
2205 | \r | |
2206 | return Status;\r | |
2207 | }\r | |
2208 | \r | |
2209 | /**\r | |
2210 | INT64 -> INT16 conversion\r | |
2211 | \r | |
2212 | Converts the value specified by Operand to a value specified by Result type\r | |
2213 | and stores the converted value into the caller allocated output buffer\r | |
2214 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2215 | least as large as the Result type.\r | |
2216 | \r | |
2217 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2218 | \r | |
2219 | If the conversion results in an overflow or an underflow condition, then\r | |
2220 | Result is set to INT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2221 | \r | |
2222 | @param[in] Operand Operand to be converted to new type\r | |
2223 | @param[out] Result Pointer to the result of conversion\r | |
2224 | \r | |
2225 | @retval RETURN_SUCCESS Successful conversion\r | |
2226 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2227 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2228 | **/\r | |
2229 | RETURN_STATUS\r | |
2230 | EFIAPI\r | |
2231 | SafeInt64ToInt16 (\r | |
2232 | IN INT64 Operand,\r | |
2233 | OUT INT16 *Result\r | |
2234 | )\r | |
2235 | {\r | |
2236 | RETURN_STATUS Status;\r | |
2237 | \r | |
2238 | if (Result == NULL) {\r | |
2239 | return RETURN_INVALID_PARAMETER;\r | |
2240 | }\r | |
2241 | \r | |
2242 | if ((Operand >= MIN_INT16) && (Operand <= MAX_INT16)) {\r | |
2243 | *Result = (INT16)Operand;\r | |
2244 | Status = RETURN_SUCCESS;\r | |
2245 | } else {\r | |
2246 | *Result = INT16_ERROR;\r | |
2247 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2248 | }\r | |
2249 | \r | |
2250 | return Status;\r | |
2251 | }\r | |
2252 | \r | |
2253 | /**\r | |
2254 | INT64 -> UINT16 conversion\r | |
2255 | \r | |
2256 | Converts the value specified by Operand to a value specified by Result type\r | |
2257 | and stores the converted value into the caller allocated output buffer\r | |
2258 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2259 | least as large as the Result type.\r | |
2260 | \r | |
2261 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2262 | \r | |
2263 | If the conversion results in an overflow or an underflow condition, then\r | |
2264 | Result is set to UINT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2265 | \r | |
2266 | @param[in] Operand Operand to be converted to new type\r | |
2267 | @param[out] Result Pointer to the result of conversion\r | |
2268 | \r | |
2269 | @retval RETURN_SUCCESS Successful conversion\r | |
2270 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2271 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2272 | **/\r | |
2273 | RETURN_STATUS\r | |
2274 | EFIAPI\r | |
2275 | SafeInt64ToUint16 (\r | |
2276 | IN INT64 Operand,\r | |
2277 | OUT UINT16 *Result\r | |
2278 | )\r | |
2279 | {\r | |
2280 | RETURN_STATUS Status;\r | |
2281 | \r | |
2282 | if (Result == NULL) {\r | |
2283 | return RETURN_INVALID_PARAMETER;\r | |
2284 | }\r | |
2285 | \r | |
2286 | if ((Operand >= 0) && (Operand <= MAX_UINT16)) {\r | |
2287 | *Result = (UINT16)Operand;\r | |
2288 | Status = RETURN_SUCCESS;\r | |
2289 | } else {\r | |
2290 | *Result = UINT16_ERROR;\r | |
2291 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2292 | }\r | |
2293 | \r | |
2294 | return Status;\r | |
2295 | }\r | |
2296 | \r | |
2297 | /**\r | |
2298 | INT64 -> INT32 conversion\r | |
2299 | \r | |
2300 | Converts the value specified by Operand to a value specified by Result type\r | |
2301 | and stores the converted value into the caller allocated output buffer\r | |
2302 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2303 | least as large as the Result type.\r | |
2304 | \r | |
2305 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2306 | \r | |
2307 | If the conversion results in an overflow or an underflow condition, then\r | |
2308 | Result is set to INT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2309 | \r | |
2310 | @param[in] Operand Operand to be converted to new type\r | |
2311 | @param[out] Result Pointer to the result of conversion\r | |
2312 | \r | |
2313 | @retval RETURN_SUCCESS Successful conversion\r | |
2314 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2315 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2316 | **/\r | |
2317 | RETURN_STATUS\r | |
2318 | EFIAPI\r | |
2319 | SafeInt64ToInt32 (\r | |
2320 | IN INT64 Operand,\r | |
2321 | OUT INT32 *Result\r | |
2322 | )\r | |
2323 | {\r | |
2324 | RETURN_STATUS Status;\r | |
2325 | \r | |
2326 | if (Result == NULL) {\r | |
2327 | return RETURN_INVALID_PARAMETER;\r | |
2328 | }\r | |
2329 | \r | |
2330 | if ((Operand >= MIN_INT32) && (Operand <= MAX_INT32)) {\r | |
2331 | *Result = (INT32)Operand;\r | |
2332 | Status = RETURN_SUCCESS;\r | |
2333 | } else {\r | |
2334 | *Result = INT32_ERROR;\r | |
2335 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2336 | }\r | |
2337 | \r | |
2338 | return Status;\r | |
2339 | }\r | |
2340 | \r | |
2341 | /**\r | |
2342 | INT64 -> UINT32 conversion\r | |
2343 | \r | |
2344 | Converts the value specified by Operand to a value specified by Result type\r | |
2345 | and stores the converted value into the caller allocated output buffer\r | |
2346 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2347 | least as large as the Result type.\r | |
2348 | \r | |
2349 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2350 | \r | |
2351 | If the conversion results in an overflow or an underflow condition, then\r | |
2352 | Result is set to UINT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2353 | \r | |
2354 | @param[in] Operand Operand to be converted to new type\r | |
2355 | @param[out] Result Pointer to the result of conversion\r | |
2356 | \r | |
2357 | @retval RETURN_SUCCESS Successful conversion\r | |
2358 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2359 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2360 | **/\r | |
2361 | RETURN_STATUS\r | |
2362 | EFIAPI\r | |
2363 | SafeInt64ToUint32 (\r | |
2364 | IN INT64 Operand,\r | |
2365 | OUT UINT32 *Result\r | |
2366 | )\r | |
2367 | {\r | |
2368 | RETURN_STATUS Status;\r | |
2369 | \r | |
2370 | if (Result == NULL) {\r | |
2371 | return RETURN_INVALID_PARAMETER;\r | |
2372 | }\r | |
2373 | \r | |
2374 | if ((Operand >= 0) && (Operand <= MAX_UINT32)) {\r | |
2375 | *Result = (UINT32)Operand;\r | |
2376 | Status = RETURN_SUCCESS;\r | |
2377 | } else {\r | |
2378 | *Result = UINT32_ERROR;\r | |
2379 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2380 | }\r | |
2381 | \r | |
2382 | return Status;\r | |
2383 | }\r | |
2384 | \r | |
2385 | /**\r | |
2386 | INT64 -> UINT64 conversion\r | |
2387 | \r | |
2388 | Converts the value specified by Operand to a value specified by Result type\r | |
2389 | and stores the converted value into the caller allocated output buffer\r | |
2390 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2391 | least as large as the Result type.\r | |
2392 | \r | |
2393 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2394 | \r | |
2395 | If the conversion results in an overflow or an underflow condition, then\r | |
2396 | Result is set to UINT64_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2397 | \r | |
2398 | @param[in] Operand Operand to be converted to new type\r | |
2399 | @param[out] Result Pointer to the result of conversion\r | |
2400 | \r | |
2401 | @retval RETURN_SUCCESS Successful conversion\r | |
2402 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2403 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2404 | **/\r | |
2405 | RETURN_STATUS\r | |
2406 | EFIAPI\r | |
2407 | SafeInt64ToUint64 (\r | |
2408 | IN INT64 Operand,\r | |
2409 | OUT UINT64 *Result\r | |
2410 | )\r | |
2411 | {\r | |
2412 | RETURN_STATUS Status;\r | |
2413 | \r | |
2414 | if (Result == NULL) {\r | |
2415 | return RETURN_INVALID_PARAMETER;\r | |
2416 | }\r | |
2417 | \r | |
2418 | if (Operand >= 0) {\r | |
2419 | *Result = (UINT64)Operand;\r | |
2420 | Status = RETURN_SUCCESS;\r | |
2421 | } else {\r | |
2422 | *Result = UINT64_ERROR;\r | |
2423 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2424 | }\r | |
2425 | \r | |
2426 | return Status;\r | |
2427 | }\r | |
2428 | \r | |
2429 | /**\r | |
2430 | UINT64 -> INT8 conversion\r | |
2431 | \r | |
2432 | Converts the value specified by Operand to a value specified by Result type\r | |
2433 | and stores the converted value into the caller allocated output buffer\r | |
2434 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2435 | least as large as the Result type.\r | |
2436 | \r | |
2437 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2438 | \r | |
2439 | If the conversion results in an overflow or an underflow condition, then\r | |
2440 | Result is set to INT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2441 | \r | |
2442 | @param[in] Operand Operand to be converted to new type\r | |
2443 | @param[out] Result Pointer to the result of conversion\r | |
2444 | \r | |
2445 | @retval RETURN_SUCCESS Successful conversion\r | |
2446 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2447 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2448 | **/\r | |
2449 | RETURN_STATUS\r | |
2450 | EFIAPI\r | |
2451 | SafeUint64ToInt8 (\r | |
2452 | IN UINT64 Operand,\r | |
2453 | OUT INT8 *Result\r | |
2454 | )\r | |
2455 | {\r | |
2456 | RETURN_STATUS Status;\r | |
2457 | \r | |
2458 | if (Result == NULL) {\r | |
2459 | return RETURN_INVALID_PARAMETER;\r | |
2460 | }\r | |
2461 | \r | |
2462 | if (Operand <= MAX_INT8) {\r | |
2463 | *Result = (INT8)Operand;\r | |
2464 | Status = RETURN_SUCCESS;\r | |
2465 | } else {\r | |
2466 | *Result = INT8_ERROR;\r | |
2467 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2468 | }\r | |
2469 | \r | |
2470 | return Status;\r | |
2471 | }\r | |
2472 | \r | |
2473 | /**\r | |
2474 | UINT64 -> CHAR8 conversion\r | |
2475 | \r | |
2476 | Converts the value specified by Operand to a value specified by Result type\r | |
2477 | and stores the converted value into the caller allocated output buffer\r | |
2478 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2479 | least as large as the Result type.\r | |
2480 | \r | |
2481 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2482 | \r | |
2483 | If the conversion results in an overflow or an underflow condition, then\r | |
2484 | Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2485 | \r | |
2486 | @param[in] Operand Operand to be converted to new type\r | |
2487 | @param[out] Result Pointer to the result of conversion\r | |
2488 | \r | |
2489 | @retval RETURN_SUCCESS Successful conversion\r | |
2490 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2491 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2492 | **/\r | |
2493 | RETURN_STATUS\r | |
2494 | EFIAPI\r | |
2495 | SafeUint64ToChar8 (\r | |
2496 | IN UINT64 Operand,\r | |
2497 | OUT CHAR8 *Result\r | |
2498 | )\r | |
2499 | {\r | |
2500 | RETURN_STATUS Status;\r | |
2501 | \r | |
2502 | if (Result == NULL) {\r | |
2503 | return RETURN_INVALID_PARAMETER;\r | |
2504 | }\r | |
2505 | \r | |
2506 | if (Operand <= MAX_INT8) {\r | |
2507 | *Result = (INT8)Operand;\r | |
2508 | Status = RETURN_SUCCESS;\r | |
2509 | } else {\r | |
2510 | *Result = CHAR8_ERROR;\r | |
2511 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2512 | }\r | |
2513 | \r | |
2514 | return Status;\r | |
2515 | }\r | |
2516 | \r | |
2517 | /**\r | |
2518 | UINT64 -> UINT8 conversion\r | |
2519 | \r | |
2520 | Converts the value specified by Operand to a value specified by Result type\r | |
2521 | and stores the converted value into the caller allocated output buffer\r | |
2522 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2523 | least as large as the Result type.\r | |
2524 | \r | |
2525 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2526 | \r | |
2527 | If the conversion results in an overflow or an underflow condition, then\r | |
2528 | Result is set to UINT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2529 | \r | |
2530 | @param[in] Operand Operand to be converted to new type\r | |
2531 | @param[out] Result Pointer to the result of conversion\r | |
2532 | \r | |
2533 | @retval RETURN_SUCCESS Successful conversion\r | |
2534 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2535 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2536 | **/\r | |
2537 | RETURN_STATUS\r | |
2538 | EFIAPI\r | |
2539 | SafeUint64ToUint8 (\r | |
2540 | IN UINT64 Operand,\r | |
2541 | OUT UINT8 *Result\r | |
2542 | )\r | |
2543 | {\r | |
2544 | RETURN_STATUS Status;\r | |
2545 | \r | |
2546 | if (Result == NULL) {\r | |
2547 | return RETURN_INVALID_PARAMETER;\r | |
2548 | }\r | |
2549 | \r | |
2550 | if (Operand <= MAX_UINT8) {\r | |
2551 | *Result = (UINT8)Operand;\r | |
2552 | Status = RETURN_SUCCESS;\r | |
2553 | } else {\r | |
2554 | *Result = UINT8_ERROR;\r | |
2555 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2556 | }\r | |
2557 | \r | |
2558 | return Status;\r | |
2559 | }\r | |
2560 | \r | |
2561 | /**\r | |
2562 | UINT64 -> INT16 conversion\r | |
2563 | \r | |
2564 | Converts the value specified by Operand to a value specified by Result type\r | |
2565 | and stores the converted value into the caller allocated output buffer\r | |
2566 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2567 | least as large as the Result type.\r | |
2568 | \r | |
2569 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2570 | \r | |
2571 | If the conversion results in an overflow or an underflow condition, then\r | |
2572 | Result is set to INT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2573 | \r | |
2574 | @param[in] Operand Operand to be converted to new type\r | |
2575 | @param[out] Result Pointer to the result of conversion\r | |
2576 | \r | |
2577 | @retval RETURN_SUCCESS Successful conversion\r | |
2578 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2579 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2580 | **/\r | |
2581 | RETURN_STATUS\r | |
2582 | EFIAPI\r | |
2583 | SafeUint64ToInt16 (\r | |
2584 | IN UINT64 Operand,\r | |
2585 | OUT INT16 *Result\r | |
2586 | )\r | |
2587 | {\r | |
2588 | RETURN_STATUS Status;\r | |
2589 | \r | |
2590 | if (Result == NULL) {\r | |
2591 | return RETURN_INVALID_PARAMETER;\r | |
2592 | }\r | |
2593 | \r | |
2594 | if (Operand <= MAX_INT16) {\r | |
2595 | *Result = (INT16)Operand;\r | |
2596 | Status = RETURN_SUCCESS;\r | |
2597 | } else {\r | |
2598 | *Result = INT16_ERROR;\r | |
2599 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2600 | }\r | |
2601 | \r | |
2602 | return Status;\r | |
2603 | }\r | |
2604 | \r | |
2605 | /**\r | |
2606 | UINT64 -> UINT16 conversion\r | |
2607 | \r | |
2608 | Converts the value specified by Operand to a value specified by Result type\r | |
2609 | and stores the converted value into the caller allocated output buffer\r | |
2610 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2611 | least as large as the Result type.\r | |
2612 | \r | |
2613 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2614 | \r | |
2615 | If the conversion results in an overflow or an underflow condition, then\r | |
2616 | Result is set to UINT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2617 | \r | |
2618 | @param[in] Operand Operand to be converted to new type\r | |
2619 | @param[out] Result Pointer to the result of conversion\r | |
2620 | \r | |
2621 | @retval RETURN_SUCCESS Successful conversion\r | |
2622 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2623 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2624 | **/\r | |
2625 | RETURN_STATUS\r | |
2626 | EFIAPI\r | |
2627 | SafeUint64ToUint16 (\r | |
2628 | IN UINT64 Operand,\r | |
2629 | OUT UINT16 *Result\r | |
2630 | )\r | |
2631 | {\r | |
2632 | RETURN_STATUS Status;\r | |
2633 | \r | |
2634 | if (Result == NULL) {\r | |
2635 | return RETURN_INVALID_PARAMETER;\r | |
2636 | }\r | |
2637 | \r | |
2638 | if (Operand <= MAX_UINT16) {\r | |
2639 | *Result = (UINT16)Operand;\r | |
2640 | Status = RETURN_SUCCESS;\r | |
2641 | } else {\r | |
2642 | *Result = UINT16_ERROR;\r | |
2643 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2644 | }\r | |
2645 | \r | |
2646 | return Status;\r | |
2647 | }\r | |
2648 | \r | |
2649 | /**\r | |
2650 | UINT64 -> INT32 conversion\r | |
2651 | \r | |
2652 | Converts the value specified by Operand to a value specified by Result type\r | |
2653 | and stores the converted value into the caller allocated output buffer\r | |
2654 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2655 | least as large as the Result type.\r | |
2656 | \r | |
2657 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2658 | \r | |
2659 | If the conversion results in an overflow or an underflow condition, then\r | |
2660 | Result is set to INT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2661 | \r | |
2662 | @param[in] Operand Operand to be converted to new type\r | |
2663 | @param[out] Result Pointer to the result of conversion\r | |
2664 | \r | |
2665 | @retval RETURN_SUCCESS Successful conversion\r | |
2666 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2667 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2668 | **/\r | |
2669 | RETURN_STATUS\r | |
2670 | EFIAPI\r | |
2671 | SafeUint64ToInt32 (\r | |
2672 | IN UINT64 Operand,\r | |
2673 | OUT INT32 *Result\r | |
2674 | )\r | |
2675 | {\r | |
2676 | RETURN_STATUS Status;\r | |
2677 | \r | |
2678 | if (Result == NULL) {\r | |
2679 | return RETURN_INVALID_PARAMETER;\r | |
2680 | }\r | |
2681 | \r | |
2682 | if (Operand <= MAX_INT32) {\r | |
2683 | *Result = (INT32)Operand;\r | |
2684 | Status = RETURN_SUCCESS;\r | |
2685 | } else {\r | |
2686 | *Result = INT32_ERROR;\r | |
2687 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2688 | }\r | |
2689 | \r | |
2690 | return Status;\r | |
2691 | }\r | |
2692 | \r | |
2693 | /**\r | |
2694 | UINT64 -> UINT32 conversion\r | |
2695 | \r | |
2696 | Converts the value specified by Operand to a value specified by Result type\r | |
2697 | and stores the converted value into the caller allocated output buffer\r | |
2698 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2699 | least as large as the Result type.\r | |
2700 | \r | |
2701 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2702 | \r | |
2703 | If the conversion results in an overflow or an underflow condition, then\r | |
2704 | Result is set to UINT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2705 | \r | |
2706 | @param[in] Operand Operand to be converted to new type\r | |
2707 | @param[out] Result Pointer to the result of conversion\r | |
2708 | \r | |
2709 | @retval RETURN_SUCCESS Successful conversion\r | |
2710 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2711 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2712 | **/\r | |
2713 | RETURN_STATUS\r | |
2714 | EFIAPI\r | |
2715 | SafeUint64ToUint32 (\r | |
2716 | IN UINT64 Operand,\r | |
2717 | OUT UINT32 *Result\r | |
2718 | )\r | |
2719 | {\r | |
2720 | RETURN_STATUS Status;\r | |
2721 | \r | |
2722 | if (Result == NULL) {\r | |
2723 | return RETURN_INVALID_PARAMETER;\r | |
2724 | }\r | |
2725 | \r | |
2726 | if (Operand <= MAX_UINT32) {\r | |
2727 | *Result = (UINT32)Operand;\r | |
2728 | Status = RETURN_SUCCESS;\r | |
2729 | } else {\r | |
2730 | *Result = UINT32_ERROR;\r | |
2731 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2732 | }\r | |
2733 | \r | |
2734 | return Status;\r | |
2735 | }\r | |
2736 | \r | |
2737 | /**\r | |
2738 | UINT64 -> INTN conversion\r | |
2739 | \r | |
2740 | Converts the value specified by Operand to a value specified by Result type\r | |
2741 | and stores the converted value into the caller allocated output buffer\r | |
2742 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2743 | least as large as the Result type.\r | |
2744 | \r | |
2745 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2746 | \r | |
2747 | If the conversion results in an overflow or an underflow condition, then\r | |
2748 | Result is set to INTN_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2749 | \r | |
2750 | @param[in] Operand Operand to be converted to new type\r | |
2751 | @param[out] Result Pointer to the result of conversion\r | |
2752 | \r | |
2753 | @retval RETURN_SUCCESS Successful conversion\r | |
2754 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2755 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2756 | **/\r | |
2757 | RETURN_STATUS\r | |
2758 | EFIAPI\r | |
2759 | SafeUint64ToIntn (\r | |
2760 | IN UINT64 Operand,\r | |
2761 | OUT INTN *Result\r | |
2762 | )\r | |
2763 | {\r | |
2764 | RETURN_STATUS Status;\r | |
2765 | \r | |
2766 | if (Result == NULL) {\r | |
2767 | return RETURN_INVALID_PARAMETER;\r | |
2768 | }\r | |
2769 | \r | |
2770 | if (Operand <= MAX_INTN) {\r | |
2771 | *Result = (INTN)Operand;\r | |
2772 | Status = RETURN_SUCCESS;\r | |
2773 | } else {\r | |
2774 | *Result = INTN_ERROR;\r | |
2775 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2776 | }\r | |
2777 | \r | |
2778 | return Status;\r | |
2779 | }\r | |
2780 | \r | |
2781 | /**\r | |
2782 | UINT64 -> INT64 conversion\r | |
2783 | \r | |
2784 | Converts the value specified by Operand to a value specified by Result type\r | |
2785 | and stores the converted value into the caller allocated output buffer\r | |
2786 | specified by Result. The caller must pass in a Result buffer that is at\r | |
2787 | least as large as the Result type.\r | |
2788 | \r | |
2789 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2790 | \r | |
2791 | If the conversion results in an overflow or an underflow condition, then\r | |
2792 | Result is set to INT64_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2793 | \r | |
2794 | @param[in] Operand Operand to be converted to new type\r | |
2795 | @param[out] Result Pointer to the result of conversion\r | |
2796 | \r | |
2797 | @retval RETURN_SUCCESS Successful conversion\r | |
2798 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2799 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2800 | **/\r | |
2801 | RETURN_STATUS\r | |
2802 | EFIAPI\r | |
2803 | SafeUint64ToInt64 (\r | |
2804 | IN UINT64 Operand,\r | |
2805 | OUT INT64 *Result\r | |
2806 | )\r | |
2807 | {\r | |
2808 | RETURN_STATUS Status;\r | |
2809 | \r | |
2810 | if (Result == NULL) {\r | |
2811 | return RETURN_INVALID_PARAMETER;\r | |
2812 | }\r | |
2813 | \r | |
2814 | if (Operand <= MAX_INT64) {\r | |
2815 | *Result = (INT64)Operand;\r | |
2816 | Status = RETURN_SUCCESS;\r | |
2817 | } else {\r | |
2818 | *Result = INT64_ERROR;\r | |
2819 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2820 | }\r | |
2821 | \r | |
2822 | return Status;\r | |
2823 | }\r | |
2824 | \r | |
2825 | //\r | |
2826 | // Addition functions\r | |
2827 | //\r | |
2828 | \r | |
2829 | /**\r | |
2830 | UINT8 addition\r | |
2831 | \r | |
2832 | Performs the requested operation using the input parameters into a value\r | |
2833 | specified by Result type and stores the converted value into the caller\r | |
2834 | allocated output buffer specified by Result. The caller must pass in a\r | |
2835 | Result buffer that is at least as large as the Result type.\r | |
2836 | \r | |
2837 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2838 | \r | |
2839 | If the requested operation results in an overflow or an underflow condition,\r | |
2840 | then Result is set to UINT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2841 | \r | |
2842 | @param[in] Augend A number to which addend will be added\r | |
2843 | @param[in] Addend A number to be added to another\r | |
2844 | @param[out] Result Pointer to the result of addition\r | |
2845 | \r | |
2846 | @retval RETURN_SUCCESS Successful addition\r | |
2847 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2848 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2849 | **/\r | |
2850 | RETURN_STATUS\r | |
2851 | EFIAPI\r | |
2852 | SafeUint8Add (\r | |
2853 | IN UINT8 Augend,\r | |
2854 | IN UINT8 Addend,\r | |
2855 | OUT UINT8 *Result\r | |
2856 | )\r | |
2857 | {\r | |
2858 | RETURN_STATUS Status;\r | |
2859 | \r | |
2860 | if (Result == NULL) {\r | |
2861 | return RETURN_INVALID_PARAMETER;\r | |
2862 | }\r | |
2863 | \r | |
2864 | if (((UINT8)(Augend + Addend)) >= Augend) {\r | |
2865 | *Result = (UINT8)(Augend + Addend);\r | |
2866 | Status = RETURN_SUCCESS;\r | |
2867 | } else {\r | |
2868 | *Result = UINT8_ERROR;\r | |
2869 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2870 | }\r | |
2871 | \r | |
2872 | return Status;\r | |
2873 | }\r | |
2874 | \r | |
2875 | /**\r | |
2876 | UINT16 addition\r | |
2877 | \r | |
2878 | Performs the requested operation using the input parameters into a value\r | |
2879 | specified by Result type and stores the converted value into the caller\r | |
2880 | allocated output buffer specified by Result. The caller must pass in a\r | |
2881 | Result buffer that is at least as large as the Result type.\r | |
2882 | \r | |
2883 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2884 | \r | |
2885 | If the requested operation results in an overflow or an underflow condition,\r | |
2886 | then Result is set to UINT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2887 | \r | |
2888 | @param[in] Augend A number to which addend will be added\r | |
2889 | @param[in] Addend A number to be added to another\r | |
2890 | @param[out] Result Pointer to the result of addition\r | |
2891 | \r | |
2892 | @retval RETURN_SUCCESS Successful addition\r | |
2893 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2894 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2895 | **/\r | |
2896 | RETURN_STATUS\r | |
2897 | EFIAPI\r | |
2898 | SafeUint16Add (\r | |
2899 | IN UINT16 Augend,\r | |
2900 | IN UINT16 Addend,\r | |
2901 | OUT UINT16 *Result\r | |
2902 | )\r | |
2903 | {\r | |
2904 | RETURN_STATUS Status;\r | |
2905 | \r | |
2906 | if (Result == NULL) {\r | |
2907 | return RETURN_INVALID_PARAMETER;\r | |
2908 | }\r | |
2909 | \r | |
2910 | if (((UINT16)(Augend + Addend)) >= Augend) {\r | |
2911 | *Result = (UINT16)(Augend + Addend);\r | |
2912 | Status = RETURN_SUCCESS;\r | |
2913 | } else {\r | |
2914 | *Result = UINT16_ERROR;\r | |
2915 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2916 | }\r | |
2917 | \r | |
2918 | return Status;\r | |
2919 | }\r | |
2920 | \r | |
2921 | /**\r | |
2922 | UINT32 addition\r | |
2923 | \r | |
2924 | Performs the requested operation using the input parameters into a value\r | |
2925 | specified by Result type and stores the converted value into the caller\r | |
2926 | allocated output buffer specified by Result. The caller must pass in a\r | |
2927 | Result buffer that is at least as large as the Result type.\r | |
2928 | \r | |
2929 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2930 | \r | |
2931 | If the requested operation results in an overflow or an underflow condition,\r | |
2932 | then Result is set to UINT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2933 | \r | |
2934 | @param[in] Augend A number to which addend will be added\r | |
2935 | @param[in] Addend A number to be added to another\r | |
2936 | @param[out] Result Pointer to the result of addition\r | |
2937 | \r | |
2938 | @retval RETURN_SUCCESS Successful addition\r | |
2939 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2940 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2941 | **/\r | |
2942 | RETURN_STATUS\r | |
2943 | EFIAPI\r | |
2944 | SafeUint32Add (\r | |
2945 | IN UINT32 Augend,\r | |
2946 | IN UINT32 Addend,\r | |
2947 | OUT UINT32 *Result\r | |
2948 | )\r | |
2949 | {\r | |
2950 | RETURN_STATUS Status;\r | |
2951 | \r | |
2952 | if (Result == NULL) {\r | |
2953 | return RETURN_INVALID_PARAMETER;\r | |
2954 | }\r | |
2955 | \r | |
2956 | if ((Augend + Addend) >= Augend) {\r | |
2957 | *Result = (Augend + Addend);\r | |
2958 | Status = RETURN_SUCCESS;\r | |
2959 | } else {\r | |
2960 | *Result = UINT32_ERROR;\r | |
2961 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
2962 | }\r | |
2963 | \r | |
2964 | return Status;\r | |
2965 | }\r | |
2966 | \r | |
2967 | /**\r | |
2968 | UINT64 addition\r | |
2969 | \r | |
2970 | Performs the requested operation using the input parameters into a value\r | |
2971 | specified by Result type and stores the converted value into the caller\r | |
2972 | allocated output buffer specified by Result. The caller must pass in a\r | |
2973 | Result buffer that is at least as large as the Result type.\r | |
2974 | \r | |
2975 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
2976 | \r | |
2977 | If the requested operation results in an overflow or an underflow condition,\r | |
2978 | then Result is set to UINT64_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
2979 | \r | |
2980 | @param[in] Augend A number to which addend will be added\r | |
2981 | @param[in] Addend A number to be added to another\r | |
2982 | @param[out] Result Pointer to the result of addition\r | |
2983 | \r | |
2984 | @retval RETURN_SUCCESS Successful addition\r | |
2985 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
2986 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
2987 | **/\r | |
2988 | RETURN_STATUS\r | |
2989 | EFIAPI\r | |
2990 | SafeUint64Add (\r | |
2991 | IN UINT64 Augend,\r | |
2992 | IN UINT64 Addend,\r | |
2993 | OUT UINT64 *Result\r | |
2994 | )\r | |
2995 | {\r | |
2996 | RETURN_STATUS Status;\r | |
2997 | \r | |
2998 | if (Result == NULL) {\r | |
2999 | return RETURN_INVALID_PARAMETER;\r | |
3000 | }\r | |
3001 | \r | |
3002 | if ((Augend + Addend) >= Augend) {\r | |
3003 | *Result = (Augend + Addend);\r | |
3004 | Status = RETURN_SUCCESS;\r | |
3005 | } else {\r | |
3006 | *Result = UINT64_ERROR;\r | |
3007 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
3008 | }\r | |
3009 | \r | |
3010 | return Status;\r | |
3011 | }\r | |
3012 | \r | |
3013 | //\r | |
3014 | // Subtraction functions\r | |
3015 | //\r | |
3016 | \r | |
3017 | /**\r | |
3018 | UINT8 subtraction\r | |
3019 | \r | |
3020 | Performs the requested operation using the input parameters into a value\r | |
3021 | specified by Result type and stores the converted value into the caller\r | |
3022 | allocated output buffer specified by Result. The caller must pass in a\r | |
3023 | Result buffer that is at least as large as the Result type.\r | |
3024 | \r | |
3025 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3026 | \r | |
3027 | If the requested operation results in an overflow or an underflow condition,\r | |
3028 | then Result is set to UINT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3029 | \r | |
3030 | @param[in] Minuend A number from which another is to be subtracted.\r | |
3031 | @param[in] Subtrahend A number to be subtracted from another\r | |
3032 | @param[out] Result Pointer to the result of subtraction\r | |
3033 | \r | |
3034 | @retval RETURN_SUCCESS Successful subtraction\r | |
3035 | @retval RETURN_BUFFER_TOO_SMALL Underflow\r | |
3036 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3037 | **/\r | |
3038 | RETURN_STATUS\r | |
3039 | EFIAPI\r | |
3040 | SafeUint8Sub (\r | |
3041 | IN UINT8 Minuend,\r | |
3042 | IN UINT8 Subtrahend,\r | |
3043 | OUT UINT8 *Result\r | |
3044 | )\r | |
3045 | {\r | |
3046 | RETURN_STATUS Status;\r | |
3047 | \r | |
3048 | if (Result == NULL) {\r | |
3049 | return RETURN_INVALID_PARAMETER;\r | |
3050 | }\r | |
3051 | \r | |
3052 | if (Minuend >= Subtrahend) {\r | |
3053 | *Result = (UINT8)(Minuend - Subtrahend);\r | |
3054 | Status = RETURN_SUCCESS;\r | |
3055 | } else {\r | |
3056 | *Result = UINT8_ERROR;\r | |
3057 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
3058 | }\r | |
3059 | \r | |
3060 | return Status;\r | |
3061 | }\r | |
3062 | \r | |
3063 | /**\r | |
3064 | UINT16 subtraction\r | |
3065 | \r | |
3066 | Performs the requested operation using the input parameters into a value\r | |
3067 | specified by Result type and stores the converted value into the caller\r | |
3068 | allocated output buffer specified by Result. The caller must pass in a\r | |
3069 | Result buffer that is at least as large as the Result type.\r | |
3070 | \r | |
3071 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3072 | \r | |
3073 | If the requested operation results in an overflow or an underflow condition,\r | |
3074 | then Result is set to UINT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3075 | \r | |
3076 | @param[in] Minuend A number from which another is to be subtracted.\r | |
3077 | @param[in] Subtrahend A number to be subtracted from another\r | |
3078 | @param[out] Result Pointer to the result of subtraction\r | |
3079 | \r | |
3080 | @retval RETURN_SUCCESS Successful subtraction\r | |
3081 | @retval RETURN_BUFFER_TOO_SMALL Underflow\r | |
3082 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3083 | **/\r | |
3084 | RETURN_STATUS\r | |
3085 | EFIAPI\r | |
3086 | SafeUint16Sub (\r | |
3087 | IN UINT16 Minuend,\r | |
3088 | IN UINT16 Subtrahend,\r | |
3089 | OUT UINT16 *Result\r | |
3090 | )\r | |
3091 | {\r | |
3092 | RETURN_STATUS Status;\r | |
3093 | \r | |
3094 | if (Result == NULL) {\r | |
3095 | return RETURN_INVALID_PARAMETER;\r | |
3096 | }\r | |
3097 | \r | |
3098 | if (Minuend >= Subtrahend) {\r | |
3099 | *Result = (UINT16)(Minuend - Subtrahend);\r | |
3100 | Status = RETURN_SUCCESS;\r | |
3101 | } else {\r | |
3102 | *Result = UINT16_ERROR;\r | |
3103 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
3104 | }\r | |
3105 | \r | |
3106 | return Status;\r | |
3107 | }\r | |
3108 | \r | |
3109 | /**\r | |
3110 | UINT32 subtraction\r | |
3111 | \r | |
3112 | Performs the requested operation using the input parameters into a value\r | |
3113 | specified by Result type and stores the converted value into the caller\r | |
3114 | allocated output buffer specified by Result. The caller must pass in a\r | |
3115 | Result buffer that is at least as large as the Result type.\r | |
3116 | \r | |
3117 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3118 | \r | |
3119 | If the requested operation results in an overflow or an underflow condition,\r | |
3120 | then Result is set to UINT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3121 | \r | |
3122 | @param[in] Minuend A number from which another is to be subtracted.\r | |
3123 | @param[in] Subtrahend A number to be subtracted from another\r | |
3124 | @param[out] Result Pointer to the result of subtraction\r | |
3125 | \r | |
3126 | @retval RETURN_SUCCESS Successful subtraction\r | |
3127 | @retval RETURN_BUFFER_TOO_SMALL Underflow\r | |
3128 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3129 | **/\r | |
3130 | RETURN_STATUS\r | |
3131 | EFIAPI\r | |
3132 | SafeUint32Sub (\r | |
3133 | IN UINT32 Minuend,\r | |
3134 | IN UINT32 Subtrahend,\r | |
3135 | OUT UINT32 *Result\r | |
3136 | )\r | |
3137 | {\r | |
3138 | RETURN_STATUS Status;\r | |
3139 | \r | |
3140 | if (Result == NULL) {\r | |
3141 | return RETURN_INVALID_PARAMETER;\r | |
3142 | }\r | |
3143 | \r | |
3144 | if (Minuend >= Subtrahend) {\r | |
3145 | *Result = (Minuend - Subtrahend);\r | |
3146 | Status = RETURN_SUCCESS;\r | |
3147 | } else {\r | |
3148 | *Result = UINT32_ERROR;\r | |
3149 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
3150 | }\r | |
3151 | \r | |
3152 | return Status;\r | |
3153 | }\r | |
3154 | \r | |
3155 | /**\r | |
3156 | UINT64 subtraction\r | |
3157 | \r | |
3158 | Performs the requested operation using the input parameters into a value\r | |
3159 | specified by Result type and stores the converted value into the caller\r | |
3160 | allocated output buffer specified by Result. The caller must pass in a\r | |
3161 | Result buffer that is at least as large as the Result type.\r | |
3162 | \r | |
3163 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3164 | \r | |
3165 | If the requested operation results in an overflow or an underflow condition,\r | |
3166 | then Result is set to UINT64_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3167 | \r | |
3168 | @param[in] Minuend A number from which another is to be subtracted.\r | |
3169 | @param[in] Subtrahend A number to be subtracted from another\r | |
3170 | @param[out] Result Pointer to the result of subtraction\r | |
3171 | \r | |
3172 | @retval RETURN_SUCCESS Successful subtraction\r | |
3173 | @retval RETURN_BUFFER_TOO_SMALL Underflow\r | |
3174 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3175 | **/\r | |
3176 | RETURN_STATUS\r | |
3177 | EFIAPI\r | |
3178 | SafeUint64Sub (\r | |
3179 | IN UINT64 Minuend,\r | |
3180 | IN UINT64 Subtrahend,\r | |
3181 | OUT UINT64 *Result\r | |
3182 | )\r | |
3183 | {\r | |
3184 | RETURN_STATUS Status;\r | |
3185 | \r | |
3186 | if (Result == NULL) {\r | |
3187 | return RETURN_INVALID_PARAMETER;\r | |
3188 | }\r | |
3189 | \r | |
3190 | if (Minuend >= Subtrahend) {\r | |
3191 | *Result = (Minuend - Subtrahend);\r | |
3192 | Status = RETURN_SUCCESS;\r | |
3193 | } else {\r | |
3194 | *Result = UINT64_ERROR;\r | |
3195 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
3196 | }\r | |
3197 | \r | |
3198 | return Status;\r | |
3199 | }\r | |
3200 | \r | |
3201 | //\r | |
3202 | // Multiplication functions\r | |
3203 | //\r | |
3204 | \r | |
3205 | /**\r | |
3206 | UINT8 multiplication\r | |
3207 | \r | |
3208 | Performs the requested operation using the input parameters into a value\r | |
3209 | specified by Result type and stores the converted value into the caller\r | |
3210 | allocated output buffer specified by Result. The caller must pass in a\r | |
3211 | Result buffer that is at least as large as the Result type.\r | |
3212 | \r | |
3213 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3214 | \r | |
3215 | If the requested operation results in an overflow or an underflow condition,\r | |
3216 | then Result is set to UINT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3217 | \r | |
3218 | @param[in] Multiplicand A number that is to be multiplied by another\r | |
3219 | @param[in] Multiplier A number by which the multiplicand is to be multiplied\r | |
3220 | @param[out] Result Pointer to the result of multiplication\r | |
3221 | \r | |
3222 | @retval RETURN_SUCCESS Successful multiplication\r | |
3223 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
3224 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3225 | **/\r | |
3226 | RETURN_STATUS\r | |
3227 | EFIAPI\r | |
3228 | SafeUint8Mult (\r | |
3229 | IN UINT8 Multiplicand,\r | |
3230 | IN UINT8 Multiplier,\r | |
3231 | OUT UINT8 *Result\r | |
3232 | )\r | |
3233 | {\r | |
3234 | UINT32 IntermediateResult;\r | |
3235 | \r | |
3236 | IntermediateResult = ((UINT32)Multiplicand) *((UINT32)Multiplier);\r | |
3237 | \r | |
3238 | return SafeUint32ToUint8 (IntermediateResult, Result);\r | |
3239 | }\r | |
3240 | \r | |
3241 | /**\r | |
3242 | UINT16 multiplication\r | |
3243 | \r | |
3244 | Performs the requested operation using the input parameters into a value\r | |
3245 | specified by Result type and stores the converted value into the caller\r | |
3246 | allocated output buffer specified by Result. The caller must pass in a\r | |
3247 | Result buffer that is at least as large as the Result type.\r | |
3248 | \r | |
3249 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3250 | \r | |
3251 | If the requested operation results in an overflow or an underflow condition,\r | |
3252 | then Result is set to UINT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3253 | \r | |
3254 | @param[in] Multiplicand A number that is to be multiplied by another\r | |
3255 | @param[in] Multiplier A number by which the multiplicand is to be multiplied\r | |
3256 | @param[out] Result Pointer to the result of multiplication\r | |
3257 | \r | |
3258 | @retval RETURN_SUCCESS Successful multiplication\r | |
3259 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
3260 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3261 | **/\r | |
3262 | RETURN_STATUS\r | |
3263 | EFIAPI\r | |
3264 | SafeUint16Mult (\r | |
3265 | IN UINT16 Multiplicand,\r | |
3266 | IN UINT16 Multiplier,\r | |
3267 | OUT UINT16 *Result\r | |
3268 | )\r | |
3269 | {\r | |
3270 | UINT32 IntermediateResult;\r | |
3271 | \r | |
3272 | IntermediateResult = ((UINT32)Multiplicand) *((UINT32)Multiplier);\r | |
3273 | \r | |
3274 | return SafeUint32ToUint16 (IntermediateResult, Result);\r | |
3275 | }\r | |
3276 | \r | |
3277 | /**\r | |
3278 | UINT32 multiplication\r | |
3279 | \r | |
3280 | Performs the requested operation using the input parameters into a value\r | |
3281 | specified by Result type and stores the converted value into the caller\r | |
3282 | allocated output buffer specified by Result. The caller must pass in a\r | |
3283 | Result buffer that is at least as large as the Result type.\r | |
3284 | \r | |
3285 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3286 | \r | |
3287 | If the requested operation results in an overflow or an underflow condition,\r | |
3288 | then Result is set to UINT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3289 | \r | |
3290 | @param[in] Multiplicand A number that is to be multiplied by another\r | |
3291 | @param[in] Multiplier A number by which the multiplicand is to be multiplied\r | |
3292 | @param[out] Result Pointer to the result of multiplication\r | |
3293 | \r | |
3294 | @retval RETURN_SUCCESS Successful multiplication\r | |
3295 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
3296 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3297 | **/\r | |
3298 | RETURN_STATUS\r | |
3299 | EFIAPI\r | |
3300 | SafeUint32Mult (\r | |
3301 | IN UINT32 Multiplicand,\r | |
3302 | IN UINT32 Multiplier,\r | |
3303 | OUT UINT32 *Result\r | |
3304 | )\r | |
3305 | {\r | |
3306 | UINT64 IntermediateResult;\r | |
3307 | \r | |
3308 | IntermediateResult = ((UINT64) Multiplicand) *((UINT64) Multiplier);\r | |
3309 | \r | |
3310 | return SafeUint64ToUint32 (IntermediateResult, Result);\r | |
3311 | }\r | |
3312 | \r | |
3313 | /**\r | |
3314 | UINT64 multiplication\r | |
3315 | \r | |
3316 | Performs the requested operation using the input parameters into a value\r | |
3317 | specified by Result type and stores the converted value into the caller\r | |
3318 | allocated output buffer specified by Result. The caller must pass in a\r | |
3319 | Result buffer that is at least as large as the Result type.\r | |
3320 | \r | |
3321 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3322 | \r | |
3323 | If the requested operation results in an overflow or an underflow condition,\r | |
3324 | then Result is set to UINT64_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3325 | \r | |
3326 | @param[in] Multiplicand A number that is to be multiplied by another\r | |
3327 | @param[in] Multiplier A number by which the multiplicand is to be multiplied\r | |
3328 | @param[out] Result Pointer to the result of multiplication\r | |
3329 | \r | |
3330 | @retval RETURN_SUCCESS Successful multiplication\r | |
3331 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
3332 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3333 | **/\r | |
3334 | RETURN_STATUS\r | |
3335 | EFIAPI\r | |
3336 | SafeUint64Mult (\r | |
3337 | IN UINT64 Multiplicand,\r | |
3338 | IN UINT64 Multiplier,\r | |
3339 | OUT UINT64 *Result\r | |
3340 | )\r | |
3341 | {\r | |
3342 | RETURN_STATUS Status;\r | |
3343 | UINT32 DwordA;\r | |
3344 | UINT32 DwordB;\r | |
3345 | UINT32 DwordC;\r | |
3346 | UINT32 DwordD;\r | |
3347 | UINT64 ProductAD;\r | |
3348 | UINT64 ProductBC;\r | |
3349 | UINT64 ProductBD;\r | |
3350 | UINT64 UnsignedResult;\r | |
3351 | \r | |
3352 | if (Result == NULL) {\r | |
3353 | return RETURN_INVALID_PARAMETER;\r | |
3354 | }\r | |
3355 | \r | |
3356 | ProductAD = 0;\r | |
3357 | ProductBC = 0;\r | |
3358 | ProductBD = 0;\r | |
3359 | UnsignedResult = 0;\r | |
3360 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
3361 | \r | |
3362 | //\r | |
3363 | // 64x64 into 128 is like 32.32 x 32.32.\r | |
3364 | //\r | |
3365 | // a.b * c.d = a*(c.d) + .b*(c.d) = a*c + a*.d + .b*c + .b*.d\r | |
3366 | // back in non-decimal notation where A=a*2^32 and C=c*2^32:\r | |
3367 | // A*C + A*d + b*C + b*d\r | |
3368 | // So there are four components to add together.\r | |
3369 | // result = (a*c*2^64) + (a*d*2^32) + (b*c*2^32) + (b*d)\r | |
3370 | //\r | |
3371 | // a * c must be 0 or there would be bits in the high 64-bits\r | |
3372 | // a * d must be less than 2^32 or there would be bits in the high 64-bits\r | |
3373 | // b * c must be less than 2^32 or there would be bits in the high 64-bits\r | |
3374 | // then there must be no overflow of the resulting values summed up.\r | |
3375 | //\r | |
3376 | DwordA = (UINT32)(Multiplicand >> 32);\r | |
3377 | DwordC = (UINT32)(Multiplier >> 32);\r | |
3378 | \r | |
3379 | //\r | |
3380 | // common case -- if high dwords are both zero, no chance for overflow\r | |
3381 | //\r | |
3382 | if ((DwordA == 0) && (DwordC == 0)) {\r | |
3383 | DwordB = (UINT32)Multiplicand;\r | |
3384 | DwordD = (UINT32)Multiplier;\r | |
3385 | \r | |
3386 | *Result = (((UINT64)DwordB) *(UINT64)DwordD);\r | |
3387 | Status = RETURN_SUCCESS;\r | |
3388 | } else {\r | |
3389 | //\r | |
3390 | // a * c must be 0 or there would be bits set in the high 64-bits\r | |
3391 | //\r | |
3392 | if ((DwordA == 0) ||\r | |
3393 | (DwordC == 0)) {\r | |
3394 | DwordD = (UINT32)Multiplier;\r | |
3395 | \r | |
3396 | //\r | |
3397 | // a * d must be less than 2^32 or there would be bits set in the high 64-bits\r | |
3398 | //\r | |
3399 | ProductAD = (((UINT64)DwordA) *(UINT64)DwordD);\r | |
3400 | if ((ProductAD & 0xffffffff00000000) == 0) {\r | |
3401 | DwordB = (UINT32)Multiplicand;\r | |
3402 | \r | |
3403 | //\r | |
3404 | // b * c must be less than 2^32 or there would be bits set in the high 64-bits\r | |
3405 | //\r | |
3406 | ProductBC = (((UINT64)DwordB) *(UINT64)DwordC);\r | |
3407 | if ((ProductBC & 0xffffffff00000000) == 0) {\r | |
3408 | //\r | |
3409 | // now sum them all up checking for overflow.\r | |
3410 | // shifting is safe because we already checked for overflow above\r | |
3411 | //\r | |
3412 | if (!RETURN_ERROR (SafeUint64Add (ProductBC << 32, ProductAD << 32, &UnsignedResult))) {\r | |
3413 | //\r | |
3414 | // b * d\r | |
3415 | //\r | |
3416 | ProductBD = (((UINT64)DwordB) *(UINT64)DwordD);\r | |
3417 | \r | |
3418 | if (!RETURN_ERROR (SafeUint64Add (UnsignedResult, ProductBD, &UnsignedResult))) {\r | |
3419 | *Result = UnsignedResult;\r | |
3420 | Status = RETURN_SUCCESS;\r | |
3421 | }\r | |
3422 | }\r | |
3423 | }\r | |
3424 | }\r | |
3425 | }\r | |
3426 | }\r | |
3427 | \r | |
3428 | if (RETURN_ERROR (Status)) {\r | |
3429 | *Result = UINT64_ERROR;\r | |
3430 | }\r | |
3431 | return Status;\r | |
3432 | }\r | |
3433 | \r | |
3434 | //\r | |
3435 | // Signed operations\r | |
3436 | //\r | |
3437 | // Strongly consider using unsigned numbers.\r | |
3438 | //\r | |
3439 | // Signed numbers are often used where unsigned numbers should be used.\r | |
3440 | // For example file sizes and array indices should always be unsigned.\r | |
3441 | // Subtracting a larger positive signed number from a smaller positive\r | |
3442 | // signed number with SafeInt32Sub will succeed, producing a negative number,\r | |
3443 | // that then must not be used as an array index (but can occasionally be\r | |
3444 | // used as a pointer index.) Similarly for adding a larger magnitude\r | |
3445 | // negative number to a smaller magnitude positive number.\r | |
3446 | //\r | |
3447 | // This library does not protect you from such errors. It tells you if your\r | |
3448 | // integer operations overflowed, not if you are doing the right thing\r | |
3449 | // with your non-overflowed integers.\r | |
3450 | //\r | |
3451 | // Likewise you can overflow a buffer with a non-overflowed unsigned index.\r | |
3452 | //\r | |
3453 | \r | |
3454 | //\r | |
3455 | // Signed addition functions\r | |
3456 | //\r | |
3457 | \r | |
3458 | /**\r | |
3459 | INT8 Addition\r | |
3460 | \r | |
3461 | Performs the requested operation using the input parameters into a value\r | |
3462 | specified by Result type and stores the converted value into the caller\r | |
3463 | allocated output buffer specified by Result. The caller must pass in a\r | |
3464 | Result buffer that is at least as large as the Result type.\r | |
3465 | \r | |
3466 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3467 | \r | |
3468 | If the requested operation results in an overflow or an underflow condition,\r | |
3469 | then Result is set to INT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3470 | \r | |
3471 | @param[in] Augend A number to which addend will be added\r | |
3472 | @param[in] Addend A number to be added to another\r | |
3473 | @param[out] Result Pointer to the result of addition\r | |
3474 | \r | |
3475 | @retval RETURN_SUCCESS Successful addition\r | |
3476 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
3477 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3478 | **/\r | |
3479 | RETURN_STATUS\r | |
3480 | EFIAPI\r | |
3481 | SafeInt8Add (\r | |
3482 | IN INT8 Augend,\r | |
3483 | IN INT8 Addend,\r | |
3484 | OUT INT8 *Result\r | |
3485 | )\r | |
3486 | {\r | |
3487 | return SafeInt32ToInt8 (((INT32)Augend) + ((INT32)Addend), Result);\r | |
3488 | }\r | |
3489 | \r | |
3490 | /**\r | |
3491 | CHAR8 Addition\r | |
3492 | \r | |
3493 | Performs the requested operation using the input parameters into a value\r | |
3494 | specified by Result type and stores the converted value into the caller\r | |
3495 | allocated output buffer specified by Result. The caller must pass in a\r | |
3496 | Result buffer that is at least as large as the Result type.\r | |
3497 | \r | |
3498 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3499 | \r | |
3500 | If the requested operation results in an overflow or an underflow condition,\r | |
3501 | then Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3502 | \r | |
3503 | @param[in] Augend A number to which addend will be added\r | |
3504 | @param[in] Addend A number to be added to another\r | |
3505 | @param[out] Result Pointer to the result of addition\r | |
3506 | \r | |
3507 | @retval RETURN_SUCCESS Successful addition\r | |
3508 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
3509 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3510 | **/\r | |
3511 | RETURN_STATUS\r | |
3512 | EFIAPI\r | |
3513 | SafeChar8Add (\r | |
3514 | IN CHAR8 Augend,\r | |
3515 | IN CHAR8 Addend,\r | |
3516 | OUT CHAR8 *Result\r | |
3517 | )\r | |
3518 | {\r | |
3519 | INT32 Augend32;\r | |
3520 | INT32 Addend32;\r | |
3521 | \r | |
3522 | if (Result == NULL) {\r | |
3523 | return RETURN_INVALID_PARAMETER;\r | |
3524 | }\r | |
3525 | \r | |
3526 | Augend32 = (INT32)Augend;\r | |
3527 | Addend32 = (INT32)Addend;\r | |
3528 | if (Augend32 < 0 || Augend32 > MAX_INT8) {\r | |
3529 | *Result = CHAR8_ERROR;\r | |
3530 | return RETURN_BUFFER_TOO_SMALL;\r | |
3531 | }\r | |
3532 | if (Addend32 < 0 || Addend32 > MAX_INT8) {\r | |
3533 | *Result = CHAR8_ERROR;\r | |
3534 | return RETURN_BUFFER_TOO_SMALL;\r | |
3535 | }\r | |
3536 | \r | |
3537 | return SafeInt32ToChar8 (Augend32 + Addend32, Result);\r | |
3538 | }\r | |
3539 | \r | |
3540 | /**\r | |
3541 | INT16 Addition\r | |
3542 | \r | |
3543 | Performs the requested operation using the input parameters into a value\r | |
3544 | specified by Result type and stores the converted value into the caller\r | |
3545 | allocated output buffer specified by Result. The caller must pass in a\r | |
3546 | Result buffer that is at least as large as the Result type.\r | |
3547 | \r | |
3548 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3549 | \r | |
3550 | If the requested operation results in an overflow or an underflow condition,\r | |
3551 | then Result is set to INT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3552 | \r | |
3553 | @param[in] Augend A number to which addend will be added\r | |
3554 | @param[in] Addend A number to be added to another\r | |
3555 | @param[out] Result Pointer to the result of addition\r | |
3556 | \r | |
3557 | @retval RETURN_SUCCESS Successful addition\r | |
3558 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
3559 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3560 | **/\r | |
3561 | RETURN_STATUS\r | |
3562 | EFIAPI\r | |
3563 | SafeInt16Add (\r | |
3564 | IN INT16 Augend,\r | |
3565 | IN INT16 Addend,\r | |
3566 | OUT INT16 *Result\r | |
3567 | )\r | |
3568 | {\r | |
3569 | return SafeInt32ToInt16 (((INT32)Augend) + ((INT32)Addend), Result);\r | |
3570 | }\r | |
3571 | \r | |
3572 | /**\r | |
3573 | INT32 Addition\r | |
3574 | \r | |
3575 | Performs the requested operation using the input parameters into a value\r | |
3576 | specified by Result type and stores the converted value into the caller\r | |
3577 | allocated output buffer specified by Result. The caller must pass in a\r | |
3578 | Result buffer that is at least as large as the Result type.\r | |
3579 | \r | |
3580 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3581 | \r | |
3582 | If the requested operation results in an overflow or an underflow condition,\r | |
3583 | then Result is set to INT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3584 | \r | |
3585 | @param[in] Augend A number to which addend will be added\r | |
3586 | @param[in] Addend A number to be added to another\r | |
3587 | @param[out] Result Pointer to the result of addition\r | |
3588 | \r | |
3589 | @retval RETURN_SUCCESS Successful addition\r | |
3590 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
3591 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3592 | **/\r | |
3593 | RETURN_STATUS\r | |
3594 | EFIAPI\r | |
3595 | SafeInt32Add (\r | |
3596 | IN INT32 Augend,\r | |
3597 | IN INT32 Addend,\r | |
3598 | OUT INT32 *Result\r | |
3599 | )\r | |
3600 | {\r | |
3601 | return SafeInt64ToInt32 (((INT64)Augend) + ((INT64)Addend), Result);\r | |
3602 | }\r | |
3603 | \r | |
3604 | /**\r | |
3605 | INT64 Addition\r | |
3606 | \r | |
3607 | Performs the requested operation using the input parameters into a value\r | |
3608 | specified by Result type and stores the converted value into the caller\r | |
3609 | allocated output buffer specified by Result. The caller must pass in a\r | |
3610 | Result buffer that is at least as large as the Result type.\r | |
3611 | \r | |
3612 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3613 | \r | |
3614 | If the requested operation results in an overflow or an underflow condition,\r | |
3615 | then Result is set to INT64_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3616 | \r | |
3617 | @param[in] Augend A number to which addend will be added\r | |
3618 | @param[in] Addend A number to be added to another\r | |
3619 | @param[out] Result Pointer to the result of addition\r | |
3620 | \r | |
3621 | @retval RETURN_SUCCESS Successful addition\r | |
3622 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
3623 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3624 | **/\r | |
3625 | RETURN_STATUS\r | |
3626 | EFIAPI\r | |
3627 | SafeInt64Add (\r | |
3628 | IN INT64 Augend,\r | |
3629 | IN INT64 Addend,\r | |
3630 | OUT INT64 *Result\r | |
3631 | )\r | |
3632 | {\r | |
3633 | RETURN_STATUS Status;\r | |
d7a09cb8 SB |
3634 | \r |
3635 | if (Result == NULL) {\r | |
3636 | return RETURN_INVALID_PARAMETER;\r | |
3637 | }\r | |
3638 | \r | |
d7a09cb8 | 3639 | //\r |
41bfaffd LE |
3640 | // * An Addend of zero can never cause underflow or overflow.\r |
3641 | //\r | |
3642 | // * A positive Addend can only cause overflow. The overflow condition is\r | |
3643 | //\r | |
3644 | // (Augend + Addend) > MAX_INT64\r | |
3645 | //\r | |
3646 | // Subtracting Addend from both sides yields\r | |
3647 | //\r | |
3648 | // Augend > (MAX_INT64 - Addend)\r | |
3649 | //\r | |
3650 | // This condition can be coded directly in C because the RHS will neither\r | |
3651 | // underflow nor overflow. That is due to the starting condition:\r | |
3652 | //\r | |
3653 | // 0 < Addend <= MAX_INT64\r | |
3654 | //\r | |
3655 | // Multiplying all three sides by (-1) yields\r | |
3656 | //\r | |
3657 | // 0 > (-Addend) >= (-MAX_INT64)\r | |
3658 | //\r | |
3659 | // Adding MAX_INT64 to all three sides yields\r | |
3660 | //\r | |
3661 | // MAX_INT64 > (MAX_INT64 - Addend) >= 0\r | |
3662 | //\r | |
3663 | // * A negative Addend can only cause underflow. The underflow condition is\r | |
3664 | //\r | |
3665 | // (Augend + Addend) < MIN_INT64\r | |
3666 | //\r | |
3667 | // Subtracting Addend from both sides yields\r | |
3668 | //\r | |
3669 | // Augend < (MIN_INT64 - Addend)\r | |
3670 | //\r | |
3671 | // This condition can be coded directly in C because the RHS will neither\r | |
3672 | // underflow nor overflow. That is due to the starting condition:\r | |
3673 | //\r | |
3674 | // MIN_INT64 <= Addend < 0\r | |
3675 | //\r | |
3676 | // Multiplying all three sides by (-1) yields\r | |
3677 | //\r | |
3678 | // (-MIN_INT64) >= (-Addend) > 0\r | |
3679 | //\r | |
3680 | // Adding MIN_INT64 to all three sides yields\r | |
3681 | //\r | |
3682 | // 0 >= (MIN_INT64 - Addend) > MIN_INT64\r | |
d7a09cb8 | 3683 | //\r |
41bfaffd LE |
3684 | if (((Addend > 0) && (Augend > (MAX_INT64 - Addend))) ||\r |
3685 | ((Addend < 0) && (Augend < (MIN_INT64 - Addend)))) {\r | |
d7a09cb8 SB |
3686 | *Result = INT64_ERROR;\r |
3687 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
3688 | } else {\r | |
41bfaffd | 3689 | *Result = Augend + Addend;\r |
d7a09cb8 SB |
3690 | Status = RETURN_SUCCESS;\r |
3691 | }\r | |
3692 | \r | |
3693 | return Status;\r | |
3694 | }\r | |
3695 | \r | |
3696 | //\r | |
3697 | // Signed subtraction functions\r | |
3698 | //\r | |
3699 | \r | |
3700 | /**\r | |
3701 | INT8 Subtraction\r | |
3702 | \r | |
3703 | Performs the requested operation using the input parameters into a value\r | |
3704 | specified by Result type and stores the converted value into the caller\r | |
3705 | allocated output buffer specified by Result. The caller must pass in a\r | |
3706 | Result buffer that is at least as large as the Result type.\r | |
3707 | \r | |
3708 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3709 | \r | |
3710 | If the requested operation results in an overflow or an underflow condition,\r | |
3711 | then Result is set to INT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3712 | \r | |
3713 | @param[in] Minuend A number from which another is to be subtracted.\r | |
3714 | @param[in] Subtrahend A number to be subtracted from another\r | |
3715 | @param[out] Result Pointer to the result of subtraction\r | |
3716 | \r | |
3717 | @retval RETURN_SUCCESS Successful subtraction\r | |
3718 | @retval RETURN_BUFFER_TOO_SMALL Underflow\r | |
3719 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3720 | **/\r | |
3721 | RETURN_STATUS\r | |
3722 | EFIAPI\r | |
3723 | SafeInt8Sub (\r | |
3724 | IN INT8 Minuend,\r | |
3725 | IN INT8 Subtrahend,\r | |
3726 | OUT INT8 *Result\r | |
3727 | )\r | |
3728 | {\r | |
3729 | return SafeInt32ToInt8 (((INT32)Minuend) - ((INT32)Subtrahend), Result);\r | |
3730 | }\r | |
3731 | \r | |
3732 | /**\r | |
3733 | CHAR8 Subtraction\r | |
3734 | \r | |
3735 | Performs the requested operation using the input parameters into a value\r | |
3736 | specified by Result type and stores the converted value into the caller\r | |
3737 | allocated output buffer specified by Result. The caller must pass in a\r | |
3738 | Result buffer that is at least as large as the Result type.\r | |
3739 | \r | |
3740 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3741 | \r | |
3742 | If the requested operation results in an overflow or an underflow condition,\r | |
3743 | then Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3744 | \r | |
3745 | @param[in] Minuend A number from which another is to be subtracted.\r | |
3746 | @param[in] Subtrahend A number to be subtracted from another\r | |
3747 | @param[out] Result Pointer to the result of subtraction\r | |
3748 | \r | |
3749 | @retval RETURN_SUCCESS Successful subtraction\r | |
3750 | @retval RETURN_BUFFER_TOO_SMALL Underflow\r | |
3751 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3752 | **/\r | |
3753 | RETURN_STATUS\r | |
3754 | EFIAPI\r | |
3755 | SafeChar8Sub (\r | |
3756 | IN CHAR8 Minuend,\r | |
3757 | IN CHAR8 Subtrahend,\r | |
3758 | OUT CHAR8 *Result\r | |
3759 | )\r | |
3760 | {\r | |
3761 | INT32 Minuend32;\r | |
3762 | INT32 Subtrahend32;\r | |
3763 | \r | |
3764 | if (Result == NULL) {\r | |
3765 | return RETURN_INVALID_PARAMETER;\r | |
3766 | }\r | |
3767 | \r | |
3768 | Minuend32 = (INT32)Minuend;\r | |
3769 | Subtrahend32 = (INT32)Subtrahend;\r | |
3770 | if (Minuend32 < 0 || Minuend32 > MAX_INT8) {\r | |
3771 | *Result = CHAR8_ERROR;\r | |
3772 | return RETURN_BUFFER_TOO_SMALL;\r | |
3773 | }\r | |
3774 | if (Subtrahend32 < 0 || Subtrahend32 > MAX_INT8) {\r | |
3775 | *Result = CHAR8_ERROR;\r | |
3776 | return RETURN_BUFFER_TOO_SMALL;\r | |
3777 | }\r | |
3778 | \r | |
3779 | return SafeInt32ToChar8 (Minuend32 - Subtrahend32, Result);\r | |
3780 | }\r | |
3781 | \r | |
3782 | /**\r | |
3783 | INT16 Subtraction\r | |
3784 | \r | |
3785 | Performs the requested operation using the input parameters into a value\r | |
3786 | specified by Result type and stores the converted value into the caller\r | |
3787 | allocated output buffer specified by Result. The caller must pass in a\r | |
3788 | Result buffer that is at least as large as the Result type.\r | |
3789 | \r | |
3790 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3791 | \r | |
3792 | If the requested operation results in an overflow or an underflow condition,\r | |
3793 | then Result is set to INT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3794 | \r | |
3795 | @param[in] Minuend A number from which another is to be subtracted.\r | |
3796 | @param[in] Subtrahend A number to be subtracted from another\r | |
3797 | @param[out] Result Pointer to the result of subtraction\r | |
3798 | \r | |
3799 | @retval RETURN_SUCCESS Successful subtraction\r | |
3800 | @retval RETURN_BUFFER_TOO_SMALL Underflow\r | |
3801 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3802 | **/\r | |
3803 | RETURN_STATUS\r | |
3804 | EFIAPI\r | |
3805 | SafeInt16Sub (\r | |
3806 | IN INT16 Minuend,\r | |
3807 | IN INT16 Subtrahend,\r | |
3808 | OUT INT16 *Result\r | |
3809 | )\r | |
3810 | {\r | |
3811 | return SafeInt32ToInt16 (((INT32)Minuend) - ((INT32)Subtrahend), Result);\r | |
3812 | }\r | |
3813 | \r | |
3814 | /**\r | |
3815 | INT32 Subtraction\r | |
3816 | \r | |
3817 | Performs the requested operation using the input parameters into a value\r | |
3818 | specified by Result type and stores the converted value into the caller\r | |
3819 | allocated output buffer specified by Result. The caller must pass in a\r | |
3820 | Result buffer that is at least as large as the Result type.\r | |
3821 | \r | |
3822 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3823 | \r | |
3824 | If the requested operation results in an overflow or an underflow condition,\r | |
3825 | then Result is set to INT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3826 | \r | |
3827 | @param[in] Minuend A number from which another is to be subtracted.\r | |
3828 | @param[in] Subtrahend A number to be subtracted from another\r | |
3829 | @param[out] Result Pointer to the result of subtraction\r | |
3830 | \r | |
3831 | @retval RETURN_SUCCESS Successful subtraction\r | |
3832 | @retval RETURN_BUFFER_TOO_SMALL Underflow\r | |
3833 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3834 | **/\r | |
3835 | RETURN_STATUS\r | |
3836 | EFIAPI\r | |
3837 | SafeInt32Sub (\r | |
3838 | IN INT32 Minuend,\r | |
3839 | IN INT32 Subtrahend,\r | |
3840 | OUT INT32 *Result\r | |
3841 | )\r | |
3842 | {\r | |
3843 | return SafeInt64ToInt32 (((INT64)Minuend) - ((INT64)Subtrahend), Result);\r | |
3844 | }\r | |
3845 | \r | |
3846 | /**\r | |
3847 | INT64 Subtraction\r | |
3848 | \r | |
3849 | Performs the requested operation using the input parameters into a value\r | |
3850 | specified by Result type and stores the converted value into the caller\r | |
3851 | allocated output buffer specified by Result. The caller must pass in a\r | |
3852 | Result buffer that is at least as large as the Result type.\r | |
3853 | \r | |
3854 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3855 | \r | |
3856 | If the requested operation results in an overflow or an underflow condition,\r | |
3857 | then Result is set to INT64_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3858 | \r | |
3859 | @param[in] Minuend A number from which another is to be subtracted.\r | |
3860 | @param[in] Subtrahend A number to be subtracted from another\r | |
3861 | @param[out] Result Pointer to the result of subtraction\r | |
3862 | \r | |
3863 | @retval RETURN_SUCCESS Successful subtraction\r | |
3864 | @retval RETURN_BUFFER_TOO_SMALL Underflow\r | |
3865 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3866 | **/\r | |
3867 | RETURN_STATUS\r | |
3868 | EFIAPI\r | |
3869 | SafeInt64Sub (\r | |
3870 | IN INT64 Minuend,\r | |
3871 | IN INT64 Subtrahend,\r | |
3872 | OUT INT64 *Result\r | |
3873 | )\r | |
3874 | {\r | |
3875 | RETURN_STATUS Status;\r | |
d7a09cb8 SB |
3876 | \r |
3877 | if (Result == NULL) {\r | |
3878 | return RETURN_INVALID_PARAMETER;\r | |
3879 | }\r | |
3880 | \r | |
d7a09cb8 | 3881 | //\r |
54c7728a LE |
3882 | // * A Subtrahend of zero can never cause underflow or overflow.\r |
3883 | //\r | |
3884 | // * A positive Subtrahend can only cause underflow. The underflow condition\r | |
3885 | // is:\r | |
3886 | //\r | |
3887 | // (Minuend - Subtrahend) < MIN_INT64\r | |
3888 | //\r | |
3889 | // Adding Subtrahend to both sides yields\r | |
3890 | //\r | |
3891 | // Minuend < (MIN_INT64 + Subtrahend)\r | |
3892 | //\r | |
3893 | // This condition can be coded directly in C because the RHS will neither\r | |
3894 | // underflow nor overflow. That is due to the starting condition:\r | |
3895 | //\r | |
3896 | // 0 < Subtrahend <= MAX_INT64\r | |
3897 | //\r | |
3898 | // Adding MIN_INT64 to all three sides yields\r | |
3899 | //\r | |
3900 | // MIN_INT64 < (MIN_INT64 + Subtrahend) <= (MIN_INT64 + MAX_INT64) = -1\r | |
d7a09cb8 | 3901 | //\r |
54c7728a LE |
3902 | // * A negative Subtrahend can only cause overflow. The overflow condition is\r |
3903 | //\r | |
3904 | // (Minuend - Subtrahend) > MAX_INT64\r | |
3905 | //\r | |
3906 | // Adding Subtrahend to both sides yields\r | |
3907 | //\r | |
3908 | // Minuend > (MAX_INT64 + Subtrahend)\r | |
3909 | //\r | |
3910 | // This condition can be coded directly in C because the RHS will neither\r | |
3911 | // underflow nor overflow. That is due to the starting condition:\r | |
3912 | //\r | |
3913 | // MIN_INT64 <= Subtrahend < 0\r | |
3914 | //\r | |
3915 | // Adding MAX_INT64 to all three sides yields\r | |
3916 | //\r | |
3917 | // -1 = (MAX_INT64 + MIN_INT64) <= (MAX_INT64 + Subtrahend) < MAX_INT64\r | |
3918 | //\r | |
3919 | if (((Subtrahend > 0) && (Minuend < (MIN_INT64 + Subtrahend))) ||\r | |
3920 | ((Subtrahend < 0) && (Minuend > (MAX_INT64 + Subtrahend)))) {\r | |
d7a09cb8 SB |
3921 | *Result = INT64_ERROR;\r |
3922 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
3923 | } else {\r | |
54c7728a | 3924 | *Result = Minuend - Subtrahend;\r |
d7a09cb8 SB |
3925 | Status = RETURN_SUCCESS;\r |
3926 | }\r | |
3927 | \r | |
3928 | return Status;\r | |
3929 | }\r | |
3930 | \r | |
3931 | //\r | |
3932 | // Signed multiplication functions\r | |
3933 | //\r | |
3934 | \r | |
3935 | /**\r | |
3936 | INT8 multiplication\r | |
3937 | \r | |
3938 | Performs the requested operation using the input parameters into a value\r | |
3939 | specified by Result type and stores the converted value into the caller\r | |
3940 | allocated output buffer specified by Result. The caller must pass in a\r | |
3941 | Result buffer that is at least as large as the Result type.\r | |
3942 | \r | |
3943 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3944 | \r | |
3945 | If the requested operation results in an overflow or an underflow condition,\r | |
3946 | then Result is set to INT8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3947 | \r | |
3948 | @param[in] Multiplicand A number that is to be multiplied by another\r | |
3949 | @param[in] Multiplier A number by which the multiplicand is to be multiplied\r | |
3950 | @param[out] Result Pointer to the result of multiplication\r | |
3951 | \r | |
3952 | @retval RETURN_SUCCESS Successful multiplication\r | |
3953 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
3954 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3955 | **/\r | |
3956 | RETURN_STATUS\r | |
3957 | EFIAPI\r | |
3958 | SafeInt8Mult (\r | |
3959 | IN INT8 Multiplicand,\r | |
3960 | IN INT8 Multiplier,\r | |
3961 | OUT INT8 *Result\r | |
3962 | )\r | |
3963 | {\r | |
3964 | return SafeInt32ToInt8 (((INT32)Multiplier) *((INT32)Multiplicand), Result);\r | |
3965 | }\r | |
3966 | \r | |
3967 | /**\r | |
3968 | CHAR8 multiplication\r | |
3969 | \r | |
3970 | Performs the requested operation using the input parameters into a value\r | |
3971 | specified by Result type and stores the converted value into the caller\r | |
3972 | allocated output buffer specified by Result. The caller must pass in a\r | |
3973 | Result buffer that is at least as large as the Result type.\r | |
3974 | \r | |
3975 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
3976 | \r | |
3977 | If the requested operation results in an overflow or an underflow condition,\r | |
3978 | then Result is set to CHAR8_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
3979 | \r | |
3980 | @param[in] Multiplicand A number that is to be multiplied by another\r | |
3981 | @param[in] Multiplier A number by which the multiplicand is to be multiplied\r | |
3982 | @param[out] Result Pointer to the result of multiplication\r | |
3983 | \r | |
3984 | @retval RETURN_SUCCESS Successful multiplication\r | |
3985 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
3986 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
3987 | **/\r | |
3988 | RETURN_STATUS\r | |
3989 | EFIAPI\r | |
3990 | SafeChar8Mult (\r | |
3991 | IN CHAR8 Multiplicand,\r | |
3992 | IN CHAR8 Multiplier,\r | |
3993 | OUT CHAR8 *Result\r | |
3994 | )\r | |
3995 | {\r | |
3996 | INT32 Multiplicand32;\r | |
3997 | INT32 Multiplier32;\r | |
3998 | \r | |
3999 | if (Result == NULL) {\r | |
4000 | return RETURN_INVALID_PARAMETER;\r | |
4001 | }\r | |
4002 | \r | |
4003 | Multiplicand32 = (INT32)Multiplicand;\r | |
4004 | Multiplier32 = (INT32)Multiplier;\r | |
4005 | if (Multiplicand32 < 0 || Multiplicand32 > MAX_INT8) {\r | |
4006 | *Result = CHAR8_ERROR;\r | |
4007 | return RETURN_BUFFER_TOO_SMALL;\r | |
4008 | }\r | |
4009 | if (Multiplier32 < 0 || Multiplier32 > MAX_INT8) {\r | |
4010 | *Result = CHAR8_ERROR;\r | |
4011 | return RETURN_BUFFER_TOO_SMALL;\r | |
4012 | }\r | |
4013 | \r | |
4014 | return SafeInt32ToChar8 (Multiplicand32 * Multiplier32, Result);\r | |
4015 | }\r | |
4016 | \r | |
4017 | /**\r | |
4018 | INT16 multiplication\r | |
4019 | \r | |
4020 | Performs the requested operation using the input parameters into a value\r | |
4021 | specified by Result type and stores the converted value into the caller\r | |
4022 | allocated output buffer specified by Result. The caller must pass in a\r | |
4023 | Result buffer that is at least as large as the Result type.\r | |
4024 | \r | |
4025 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
4026 | \r | |
4027 | If the requested operation results in an overflow or an underflow condition,\r | |
4028 | then Result is set to INT16_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
4029 | \r | |
4030 | @param[in] Multiplicand A number that is to be multiplied by another\r | |
4031 | @param[in] Multiplier A number by which the multiplicand is to be multiplied\r | |
4032 | @param[out] Result Pointer to the result of multiplication\r | |
4033 | \r | |
4034 | @retval RETURN_SUCCESS Successful multiplication\r | |
4035 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
4036 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
4037 | **/\r | |
4038 | RETURN_STATUS\r | |
4039 | EFIAPI\r | |
4040 | SafeInt16Mult (\r | |
4041 | IN INT16 Multiplicand,\r | |
4042 | IN INT16 Multiplier,\r | |
4043 | OUT INT16 *Result\r | |
4044 | )\r | |
4045 | {\r | |
4046 | return SafeInt32ToInt16 (((INT32)Multiplicand) *((INT32)Multiplier), Result);\r | |
4047 | }\r | |
4048 | \r | |
4049 | /**\r | |
4050 | INT32 multiplication\r | |
4051 | \r | |
4052 | Performs the requested operation using the input parameters into a value\r | |
4053 | specified by Result type and stores the converted value into the caller\r | |
4054 | allocated output buffer specified by Result. The caller must pass in a\r | |
4055 | Result buffer that is at least as large as the Result type.\r | |
4056 | \r | |
4057 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
4058 | \r | |
4059 | If the requested operation results in an overflow or an underflow condition,\r | |
4060 | then Result is set to INT32_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
4061 | \r | |
4062 | @param[in] Multiplicand A number that is to be multiplied by another\r | |
4063 | @param[in] Multiplier A number by which the multiplicand is to be multiplied\r | |
4064 | @param[out] Result Pointer to the result of multiplication\r | |
4065 | \r | |
4066 | @retval RETURN_SUCCESS Successful multiplication\r | |
4067 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
4068 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
4069 | **/\r | |
4070 | RETURN_STATUS\r | |
4071 | EFIAPI\r | |
4072 | SafeInt32Mult (\r | |
4073 | IN INT32 Multiplicand,\r | |
4074 | IN INT32 Multiplier,\r | |
4075 | OUT INT32 *Result\r | |
4076 | )\r | |
4077 | {\r | |
4078 | return SafeInt64ToInt32 (((INT64)Multiplicand) *((INT64)Multiplier), Result);\r | |
4079 | }\r | |
4080 | \r | |
4081 | /**\r | |
4082 | INT64 multiplication\r | |
4083 | \r | |
4084 | Performs the requested operation using the input parameters into a value\r | |
4085 | specified by Result type and stores the converted value into the caller\r | |
4086 | allocated output buffer specified by Result. The caller must pass in a\r | |
4087 | Result buffer that is at least as large as the Result type.\r | |
4088 | \r | |
4089 | If Result is NULL, RETURN_INVALID_PARAMETER is returned.\r | |
4090 | \r | |
4091 | If the requested operation results in an overflow or an underflow condition,\r | |
4092 | then Result is set to INT64_ERROR and RETURN_BUFFER_TOO_SMALL is returned.\r | |
4093 | \r | |
4094 | @param[in] Multiplicand A number that is to be multiplied by another\r | |
4095 | @param[in] Multiplier A number by which the multiplicand is to be multiplied\r | |
4096 | @param[out] Result Pointer to the result of multiplication\r | |
4097 | \r | |
4098 | @retval RETURN_SUCCESS Successful multiplication\r | |
4099 | @retval RETURN_BUFFER_TOO_SMALL Overflow\r | |
4100 | @retval RETURN_INVALID_PARAMETER Result is NULL\r | |
4101 | **/\r | |
4102 | RETURN_STATUS\r | |
4103 | EFIAPI\r | |
4104 | SafeInt64Mult (\r | |
4105 | IN INT64 Multiplicand,\r | |
4106 | IN INT64 Multiplier,\r | |
4107 | OUT INT64 *Result\r | |
4108 | )\r | |
4109 | {\r | |
4110 | RETURN_STATUS Status;\r | |
4111 | UINT64 UnsignedMultiplicand;\r | |
4112 | UINT64 UnsignedMultiplier;\r | |
4113 | UINT64 UnsignedResult;\r | |
4114 | \r | |
4115 | if (Result == NULL) {\r | |
4116 | return RETURN_INVALID_PARAMETER;\r | |
4117 | }\r | |
4118 | \r | |
4119 | //\r | |
4120 | // Split into sign and magnitude, do unsigned operation, apply sign.\r | |
4121 | //\r | |
4122 | if (Multiplicand < 0) {\r | |
4123 | //\r | |
4124 | // Avoid negating the most negative number.\r | |
4125 | //\r | |
4126 | UnsignedMultiplicand = ((UINT64)(- (Multiplicand + 1))) + 1;\r | |
4127 | } else {\r | |
4128 | UnsignedMultiplicand = (UINT64)Multiplicand;\r | |
4129 | }\r | |
4130 | \r | |
4131 | if (Multiplier < 0) {\r | |
4132 | //\r | |
4133 | // Avoid negating the most negative number.\r | |
4134 | //\r | |
4135 | UnsignedMultiplier = ((UINT64)(- (Multiplier + 1))) + 1;\r | |
4136 | } else {\r | |
4137 | UnsignedMultiplier = (UINT64)Multiplier;\r | |
4138 | }\r | |
4139 | \r | |
4140 | Status = SafeUint64Mult (UnsignedMultiplicand, UnsignedMultiplier, &UnsignedResult);\r | |
4141 | if (!RETURN_ERROR (Status)) {\r | |
4142 | if ((Multiplicand < 0) != (Multiplier < 0)) {\r | |
4143 | if (UnsignedResult > MIN_INT64_MAGNITUDE) {\r | |
4144 | *Result = INT64_ERROR;\r | |
4145 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
4146 | } else {\r | |
4147 | *Result = - ((INT64)UnsignedResult);\r | |
4148 | }\r | |
4149 | } else {\r | |
4150 | if (UnsignedResult > MAX_INT64) {\r | |
4151 | *Result = INT64_ERROR;\r | |
4152 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
4153 | } else {\r | |
4154 | *Result = (INT64)UnsignedResult;\r | |
4155 | }\r | |
4156 | }\r | |
4157 | } else {\r | |
4158 | *Result = INT64_ERROR;\r | |
4159 | }\r | |
4160 | return Status;\r | |
4161 | }\r | |
4162 | \r |