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878ddf1f | 1 | /** @file\r |
2 | Wrapper functions for Base Memory Library.\r | |
3 | \r | |
4 | Copyright (c) 2006, Intel Corporation<BR>\r | |
5 | All rights reserved. This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | Module Name: MemLibWrapper.c\r | |
14 | \r | |
15 | The following BaseMemoryLib instances share the same version of this file:\r | |
16 | \r | |
17 | BaseMemoryLib\r | |
18 | BaseMemoryLibMmx\r | |
19 | BaseMemoryLibSse2\r | |
20 | BaseMemoryLibRepStr\r | |
21 | PeiMemoryLib\r | |
22 | UefiMemoryLib\r | |
23 | \r | |
24 | **/\r | |
25 | \r | |
26 | /**\r | |
27 | Copy Length bytes from Source to Destination.\r | |
28 | \r | |
29 | @param Destination Target of copy\r | |
30 | @param Source Place to copy from\r | |
31 | @param Length Number of bytes to copy\r | |
32 | \r | |
33 | @return Destination\r | |
34 | \r | |
35 | **/\r | |
36 | VOID *\r | |
37 | EFIAPI\r | |
38 | InternalMemCopyMem (\r | |
39 | OUT VOID *DestinationBuffer,\r | |
40 | IN CONST VOID *SourceBuffer,\r | |
41 | IN UINTN Length\r | |
42 | );\r | |
43 | \r | |
44 | /**\r | |
45 | Set Buffer to Value for Size bytes.\r | |
46 | \r | |
47 | @param Buffer Memory to set.\r | |
48 | @param Size Number of bytes to set\r | |
49 | @param Value Value of the set operation.\r | |
50 | \r | |
51 | @return Buffer\r | |
52 | \r | |
53 | **/\r | |
54 | VOID *\r | |
55 | EFIAPI\r | |
56 | InternalMemSetMem (\r | |
57 | OUT VOID *Buffer,\r | |
58 | IN UINTN Length,\r | |
59 | IN UINT8 Value\r | |
60 | );\r | |
61 | \r | |
62 | /**\r | |
63 | Fills a target buffer with a 16-bit value, and returns the target buffer.\r | |
64 | \r | |
65 | @param Buffer Pointer to the target buffer to fill.\r | |
66 | @param Length Number of bytes in Buffer to fill.\r | |
67 | @param Value Value with which to fill Length bytes of Buffer.\r | |
68 | \r | |
69 | @return Buffer\r | |
70 | \r | |
71 | **/\r | |
72 | VOID *\r | |
73 | EFIAPI\r | |
74 | InternalMemSetMem16 (\r | |
75 | OUT VOID *Buffer,\r | |
76 | IN UINTN Length,\r | |
77 | IN UINT16 Value\r | |
78 | );\r | |
79 | \r | |
80 | /**\r | |
81 | Fills a target buffer with a 32-bit value, and returns the target buffer.\r | |
82 | \r | |
83 | @param Buffer Pointer to the target buffer to fill.\r | |
84 | @param Length Number of bytes in Buffer to fill.\r | |
85 | @param Value Value with which to fill Length bytes of Buffer.\r | |
86 | \r | |
87 | @return Buffer\r | |
88 | \r | |
89 | **/\r | |
90 | VOID *\r | |
91 | EFIAPI\r | |
92 | InternalMemSetMem32 (\r | |
93 | OUT VOID *Buffer,\r | |
94 | IN UINTN Length,\r | |
95 | IN UINT32 Value\r | |
96 | );\r | |
97 | \r | |
98 | /**\r | |
99 | Fills a target buffer with a 64-bit value, and returns the target buffer.\r | |
100 | \r | |
101 | @param Buffer Pointer to the target buffer to fill.\r | |
102 | @param Length Number of bytes in Buffer to fill.\r | |
103 | @param Value Value with which to fill Length bytes of Buffer.\r | |
104 | \r | |
105 | @return Buffer\r | |
106 | \r | |
107 | **/\r | |
108 | VOID *\r | |
109 | EFIAPI\r | |
110 | InternalMemSetMem64 (\r | |
111 | OUT VOID *Buffer,\r | |
112 | IN UINTN Length,\r | |
113 | IN UINT64 Value\r | |
114 | );\r | |
115 | \r | |
116 | /**\r | |
117 | Set Buffer to 0 for Size bytes.\r | |
118 | \r | |
119 | @param Buffer Memory to set.\r | |
120 | @param Size Number of bytes to set\r | |
121 | \r | |
122 | @return Buffer\r | |
123 | \r | |
124 | **/\r | |
125 | VOID *\r | |
126 | EFIAPI\r | |
127 | InternalMemZeroMem (\r | |
128 | OUT VOID *Buffer,\r | |
129 | IN UINTN Length\r | |
130 | );\r | |
131 | \r | |
132 | /**\r | |
133 | Compares two memory buffers of a given length.\r | |
134 | \r | |
135 | @param DestinationBuffer First memory buffer\r | |
136 | @param SourceBuffer Second memory buffer\r | |
137 | @param Length Length of DestinationBuffer and SourceBuffer memory\r | |
138 | regions to compare. Must be non-zero.\r | |
139 | \r | |
140 | @retval 0 if MemOne == MemTwo\r | |
141 | \r | |
142 | **/\r | |
143 | INTN\r | |
144 | EFIAPI\r | |
145 | InternalMemCompareMem (\r | |
146 | IN CONST VOID *DestinationBuffer,\r | |
147 | IN CONST VOID *SourceBuffer,\r | |
148 | IN UINTN Length\r | |
149 | );\r | |
150 | \r | |
151 | /**\r | |
152 | Scans a target buffer for an 8-bit value, and returns a pointer to the\r | |
153 | matching 8-bit value in the target buffer.\r | |
154 | \r | |
155 | @param Buffer Pointer to the target buffer to scan.\r | |
156 | @param Length Number of bytes in Buffer to scan. Must be non-zero.\r | |
157 | @param Value Value to search for in the target buffer.\r | |
158 | \r | |
159 | @return Pointer to the first occurrence or NULL if not found.\r | |
160 | \r | |
161 | **/\r | |
162 | CONST VOID *\r | |
163 | EFIAPI\r | |
164 | InternalMemScanMem8 (\r | |
165 | IN CONST VOID *Buffer,\r | |
166 | IN UINTN Length,\r | |
167 | IN UINT8 Value\r | |
168 | );\r | |
169 | \r | |
170 | /**\r | |
171 | Scans a target buffer for a 16-bit value, and returns a pointer to the\r | |
172 | matching 16-bit value in the target buffer.\r | |
173 | \r | |
174 | @param Buffer Pointer to the target buffer to scan.\r | |
175 | @param Length Number of bytes in Buffer to scan. Must be non-zero.\r | |
176 | @param Value Value to search for in the target buffer.\r | |
177 | \r | |
178 | @return Pointer to the first occurrence or NULL if not found.\r | |
179 | \r | |
180 | **/\r | |
181 | CONST VOID *\r | |
182 | EFIAPI\r | |
183 | InternalMemScanMem16 (\r | |
184 | IN CONST VOID *Buffer,\r | |
185 | IN UINTN Length,\r | |
186 | IN UINT16 Value\r | |
187 | );\r | |
188 | \r | |
189 | /**\r | |
190 | Scans a target buffer for a 32-bit value, and returns a pointer to the\r | |
191 | matching 32-bit value in the target buffer.\r | |
192 | \r | |
193 | @param Buffer Pointer to the target buffer to scan.\r | |
194 | @param Length Number of bytes in Buffer to scan. Must be non-zero.\r | |
195 | @param Value Value to search for in the target buffer.\r | |
196 | \r | |
197 | @return Pointer to the first occurrence or NULL if not found.\r | |
198 | \r | |
199 | **/\r | |
200 | CONST VOID *\r | |
201 | EFIAPI\r | |
202 | InternalMemScanMem32 (\r | |
203 | IN CONST VOID *Buffer,\r | |
204 | IN UINTN Length,\r | |
205 | IN UINT32 Value\r | |
206 | );\r | |
207 | \r | |
208 | /**\r | |
209 | Scans a target buffer for a 64-bit value, and returns a pointer to the\r | |
210 | matching 64-bit value in the target buffer.\r | |
211 | \r | |
212 | @param Buffer Pointer to the target buffer to scan.\r | |
213 | @param Length Number of bytes in Buffer to scan. Must be non-zero.\r | |
214 | @param Value Value to search for in the target buffer.\r | |
215 | \r | |
216 | @return Pointer to the first occurrence or NULL if not found.\r | |
217 | \r | |
218 | **/\r | |
219 | CONST VOID *\r | |
220 | EFIAPI\r | |
221 | InternalMemScanMem64 (\r | |
222 | IN CONST VOID *Buffer,\r | |
223 | IN UINTN Length,\r | |
224 | IN UINT64 Value\r | |
225 | );\r | |
226 | \r | |
227 | /**\r | |
228 | Copy Length bytes from Source to Destination.\r | |
229 | \r | |
230 | This function copies Length bytes from SourceBuffer to DestinationBuffer, and\r | |
231 | returns DestinationBuffer. The implementation must be reentrant, and it must\r | |
232 | handle the case where SourceBuffer overlaps DestinationBuffer.\r | |
233 | \r | |
234 | If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then\r | |
235 | ASSERT().\r | |
236 | If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().\r | |
237 | \r | |
238 | @param Destination Target of copy\r | |
239 | @param Source Place to copy from\r | |
240 | @param Length Number of bytes to copy\r | |
241 | \r | |
242 | @return Destination\r | |
243 | \r | |
244 | **/\r | |
245 | VOID *\r | |
246 | EFIAPI\r | |
247 | CopyMem (\r | |
248 | OUT VOID *Destination,\r | |
249 | IN CONST VOID *Source,\r | |
250 | IN UINTN Length\r | |
251 | )\r | |
252 | {\r | |
253 | ASSERT (Length <= MAX_ADDRESS - (UINTN)Destination + 1);\r | |
254 | ASSERT (Length <= MAX_ADDRESS - (UINTN)Source + 1);\r | |
255 | return InternalMemCopyMem (Destination, Source, Length);\r | |
256 | }\r | |
257 | \r | |
258 | /**\r | |
259 | Set Buffer to Value for Size bytes.\r | |
260 | \r | |
261 | This function fills Length bytes of Buffer with Value, and returns Buffer.\r | |
262 | \r | |
263 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
264 | \r | |
265 | @param Buffer Memory to set.\r | |
266 | @param Size Number of bytes to set\r | |
267 | @param Value Value of the set operation.\r | |
268 | \r | |
269 | @return Buffer\r | |
270 | \r | |
271 | **/\r | |
272 | VOID *\r | |
273 | EFIAPI\r | |
274 | SetMem (\r | |
275 | IN VOID *Buffer,\r | |
276 | IN UINTN Size,\r | |
277 | IN UINT8 Value\r | |
278 | )\r | |
279 | {\r | |
280 | ASSERT (Size <= MAX_ADDRESS - (UINTN)Buffer + 1);\r | |
281 | return InternalMemSetMem (Buffer, Size, Value);\r | |
282 | }\r | |
283 | \r | |
284 | /**\r | |
285 | Fills a target buffer with a 16-bit value, and returns the target buffer.\r | |
286 | \r | |
287 | This function fills Length bytes of Buffer with the 16-bit value specified by\r | |
288 | Value, and returns Buffer. Value is repeated every 16-bits in for Length\r | |
289 | bytes of Buffer.\r | |
290 | \r | |
291 | If Buffer is NULL and Length > 0, then ASSERT().\r | |
292 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
293 | If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r | |
294 | If Length is not aligned on a 16-bit boundary, then ASSERT().\r | |
295 | \r | |
296 | @param Buffer Pointer to the target buffer to fill.\r | |
297 | @param Length Number of bytes in Buffer to fill.\r | |
298 | @param Value Value with which to fill Length bytes of Buffer.\r | |
299 | \r | |
300 | @return Buffer\r | |
301 | \r | |
302 | **/\r | |
303 | VOID *\r | |
304 | EFIAPI\r | |
305 | SetMem16 (\r | |
306 | OUT VOID *Buffer,\r | |
307 | IN UINTN Length,\r | |
308 | IN UINT16 Value\r | |
309 | )\r | |
310 | {\r | |
311 | ASSERT (Buffer != NULL);\r | |
312 | ASSERT (Length <= MAX_ADDRESS - (UINTN)Buffer + 1);\r | |
313 | ASSERT ((((UINTN)Buffer) & 1) != 0);\r | |
314 | ASSERT ((Length & 1) != 0);\r | |
315 | \r | |
316 | if ((Length /= sizeof (Value)) == 0) {\r | |
317 | return Buffer;\r | |
318 | }\r | |
319 | return InternalMemSetMem16 (Buffer, Length, Value);\r | |
320 | }\r | |
321 | \r | |
322 | /**\r | |
323 | Fills a target buffer with a 32-bit value, and returns the target buffer.\r | |
324 | \r | |
325 | This function fills Length bytes of Buffer with the 32-bit value specified by\r | |
326 | Value, and returns Buffer. Value is repeated every 32-bits in for Length\r | |
327 | bytes of Buffer.\r | |
328 | \r | |
329 | If Buffer is NULL and Length > 0, then ASSERT().\r | |
330 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
331 | If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r | |
332 | If Length is not aligned on a 32-bit boundary, then ASSERT().\r | |
333 | \r | |
334 | @param Buffer Pointer to the target buffer to fill.\r | |
335 | @param Length Number of bytes in Buffer to fill.\r | |
336 | @param Value Value with which to fill Length bytes of Buffer.\r | |
337 | \r | |
338 | @return Buffer\r | |
339 | \r | |
340 | **/\r | |
341 | VOID *\r | |
342 | EFIAPI\r | |
343 | SetMem32 (\r | |
344 | OUT VOID *Buffer,\r | |
345 | IN UINTN Length,\r | |
346 | IN UINT32 Value\r | |
347 | )\r | |
348 | {\r | |
349 | ASSERT (Buffer != NULL);\r | |
350 | ASSERT (Length <= MAX_ADDRESS - (UINTN)Buffer + 1);\r | |
351 | ASSERT ((((UINTN)Buffer) & 1) != 0);\r | |
352 | ASSERT ((Length & 1) != 0);\r | |
353 | \r | |
354 | if ((Length /= sizeof (Value)) == 0) {\r | |
355 | return Buffer;\r | |
356 | }\r | |
357 | return InternalMemSetMem32 (Buffer, Length, Value);\r | |
358 | }\r | |
359 | \r | |
360 | /**\r | |
361 | Fills a target buffer with a 64-bit value, and returns the target buffer.\r | |
362 | \r | |
363 | This function fills Length bytes of Buffer with the 64-bit value specified by\r | |
364 | Value, and returns Buffer. Value is repeated every 64-bits in for Length\r | |
365 | bytes of Buffer.\r | |
366 | \r | |
367 | If Buffer is NULL and Length > 0, then ASSERT().\r | |
368 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
369 | If Buffer is not aligned on a 64-bit boundary, then ASSERT().\r | |
370 | If Length is not aligned on a 64-bit boundary, then ASSERT().\r | |
371 | \r | |
372 | @param Buffer Pointer to the target buffer to fill.\r | |
373 | @param Length Number of bytes in Buffer to fill.\r | |
374 | @param Value Value with which to fill Length bytes of Buffer.\r | |
375 | \r | |
376 | @return Buffer\r | |
377 | \r | |
378 | **/\r | |
379 | VOID *\r | |
380 | EFIAPI\r | |
381 | SetMem64 (\r | |
382 | OUT VOID *Buffer,\r | |
383 | IN UINTN Length,\r | |
384 | IN UINT64 Value\r | |
385 | )\r | |
386 | {\r | |
387 | ASSERT (Buffer != NULL);\r | |
388 | ASSERT (Length <= MAX_ADDRESS - (UINTN)Buffer + 1);\r | |
389 | ASSERT ((((UINTN)Buffer) & 1) != 0);\r | |
390 | ASSERT ((Length & 1) != 0);\r | |
391 | \r | |
392 | if ((Length /= sizeof (Value)) == 0) {\r | |
393 | return Buffer;\r | |
394 | }\r | |
395 | return InternalMemSetMem64 (Buffer, Length, Value);\r | |
396 | }\r | |
397 | \r | |
398 | /**\r | |
399 | Set Buffer to 0 for Size bytes.\r | |
400 | \r | |
401 | This function fills Length bytes of Buffer with zeros, and returns Buffer.\r | |
402 | \r | |
403 | If Buffer is NULL and Length > 0, then ASSERT().\r | |
404 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
405 | \r | |
406 | @param Buffer Memory to set.\r | |
407 | @param Size Number of bytes to set\r | |
408 | \r | |
409 | @return Buffer\r | |
410 | \r | |
411 | **/\r | |
412 | VOID *\r | |
413 | EFIAPI\r | |
414 | ZeroMem (\r | |
415 | IN VOID *Buffer,\r | |
416 | IN UINTN Size\r | |
417 | )\r | |
418 | {\r | |
419 | ASSERT (Buffer != NULL);\r | |
420 | return InternalMemSetMem (Buffer, Size, 0);\r | |
421 | }\r | |
422 | \r | |
423 | /**\r | |
424 | Compares two memory buffers of a given length.\r | |
425 | \r | |
426 | This function compares Length bytes of SourceBuffer to Length bytes of\r | |
427 | DestinationBuffer. If all Length bytes of the two buffers are identical, then\r | |
428 | 0 is returned. Otherwise, the value returned is the first mismatched byte in\r | |
429 | SourceBuffer subtracted from the first mismatched byte in DestinationBuffer.\r | |
430 | \r | |
431 | If DestinationBuffer is NULL and Length > 0, then ASSERT().\r | |
432 | If SourceBuffer is NULL and Length > 0, then ASSERT().\r | |
433 | If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then\r | |
434 | ASSERT().\r | |
435 | If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().\r | |
436 | \r | |
437 | @param DestinationBuffer First memory buffer\r | |
438 | @param SourceBuffer Second memory buffer\r | |
439 | @param Length Length of DestinationBuffer and SourceBuffer memory\r | |
440 | regions to compare\r | |
441 | \r | |
442 | @retval 0 if DestinationBuffer == SourceBuffer\r | |
443 | @retval Non-zero if DestinationBuffer != SourceBuffer\r | |
444 | \r | |
445 | **/\r | |
446 | INTN\r | |
447 | EFIAPI\r | |
448 | CompareMem (\r | |
449 | IN CONST VOID *DestinationBuffer,\r | |
450 | IN CONST VOID *SourceBuffer,\r | |
451 | IN UINTN Length\r | |
452 | )\r | |
453 | {\r | |
454 | ASSERT (DestinationBuffer != NULL);\r | |
455 | ASSERT (SourceBuffer != NULL);\r | |
456 | ASSERT (Length <= MAX_ADDRESS - (UINTN)DestinationBuffer + 1);\r | |
457 | ASSERT (Length <= MAX_ADDRESS - (UINTN)SourceBuffer + 1);\r | |
458 | if (Length == 0) {\r | |
459 | return 0;\r | |
460 | }\r | |
461 | return InternalMemCompareMem (DestinationBuffer, SourceBuffer, Length);\r | |
462 | }\r | |
463 | \r | |
464 | /**\r | |
465 | Scans a target buffer for an 8-bit value, and returns a pointer to the\r | |
466 | matching 8-bit value in the target buffer.\r | |
467 | \r | |
468 | This function searches target the buffer specified by Buffer and Length from\r | |
469 | the lowest address to the highest address for an 8-bit value that matches\r | |
470 | Value. If a match is found, then a pointer to the matching byte in the target\r | |
471 | buffer is returned. If no match is found, then NULL is returned. If Length is\r | |
472 | 0, then NULL is returned.\r | |
473 | \r | |
474 | If Buffer is NULL, then ASSERT().\r | |
475 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
476 | \r | |
477 | @param Buffer Pointer to the target buffer to scan.\r | |
478 | @param Length Number of bytes in Buffer to scan.\r | |
479 | @param Value Value to search for in the target buffer.\r | |
480 | \r | |
481 | @return Pointer to the first occurrence or NULL if not found.\r | |
482 | @retval NULL if Length == 0 or Value was not found.\r | |
483 | \r | |
484 | **/\r | |
485 | VOID *\r | |
486 | EFIAPI\r | |
487 | ScanMem8 (\r | |
488 | IN CONST VOID *Buffer,\r | |
489 | IN UINTN Length,\r | |
490 | IN UINT8 Value\r | |
491 | )\r | |
492 | {\r | |
493 | ASSERT (Buffer != NULL);\r | |
494 | ASSERT (Length <= MAX_ADDRESS + (UINTN)Buffer + 1);\r | |
495 | \r | |
496 | if ((Length /= sizeof (Value)) == 0) {\r | |
497 | return NULL;\r | |
498 | }\r | |
499 | return (VOID*)InternalMemScanMem8 (Buffer, Length, Value);\r | |
500 | }\r | |
501 | \r | |
502 | /**\r | |
503 | Scans a target buffer for a 16-bit value, and returns a pointer to the\r | |
504 | matching 16-bit value in the target buffer.\r | |
505 | \r | |
506 | This function searches target the buffer specified by Buffer and Length from\r | |
507 | the lowest address to the highest address at 16-bit increments for a 16-bit\r | |
508 | value that matches Value. If a match is found, then a pointer to the matching\r | |
509 | value in the target buffer is returned. If no match is found, then NULL is\r | |
510 | returned. If Length is 0, then NULL is returned.\r | |
511 | \r | |
512 | If Buffer is NULL, then ASSERT().\r | |
513 | If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r | |
514 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
515 | \r | |
516 | @param Buffer Pointer to the target buffer to scan.\r | |
517 | @param Length Number of bytes in Buffer to scan.\r | |
518 | @param Value Value to search for in the target buffer.\r | |
519 | \r | |
520 | @return Pointer to the first occurrence.\r | |
521 | @retval NULL if Length == 0 or Value was not found.\r | |
522 | \r | |
523 | **/\r | |
524 | VOID *\r | |
525 | EFIAPI\r | |
526 | ScanMem16 (\r | |
527 | IN CONST VOID *Buffer,\r | |
528 | IN UINTN Length,\r | |
529 | IN UINT16 Value\r | |
530 | )\r | |
531 | {\r | |
532 | ASSERT (Buffer != NULL);\r | |
533 | ASSERT (((UINTN)Buffer & (sizeof (Value) - 1)) == 0);\r | |
534 | ASSERT (Length <= MAX_ADDRESS + (UINTN)Buffer + 1);\r | |
535 | \r | |
536 | if ((Length /= sizeof (Value)) == 0) {\r | |
537 | return NULL;\r | |
538 | }\r | |
539 | return (VOID*)InternalMemScanMem16 (Buffer, Length, Value);\r | |
540 | }\r | |
541 | \r | |
542 | /**\r | |
543 | Scans a target buffer for a 32-bit value, and returns a pointer to the\r | |
544 | matching 32-bit value in the target buffer.\r | |
545 | \r | |
546 | This function searches target the buffer specified by Buffer and Length from\r | |
547 | the lowest address to the highest address at 32-bit increments for a 32-bit\r | |
548 | value that matches Value. If a match is found, then a pointer to the matching\r | |
549 | value in the target buffer is returned. If no match is found, then NULL is\r | |
550 | returned. If Length is 0, then NULL is returned.\r | |
551 | \r | |
552 | If Buffer is NULL, then ASSERT().\r | |
553 | If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r | |
554 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
555 | \r | |
556 | @param Buffer Pointer to the target buffer to scan.\r | |
557 | @param Length Number of bytes in Buffer to scan.\r | |
558 | @param Value Value to search for in the target buffer.\r | |
559 | \r | |
560 | @return Pointer to the first occurrence or NULL if not found.\r | |
561 | @retval NULL if Length == 0 or Value was not found.\r | |
562 | \r | |
563 | **/\r | |
564 | VOID *\r | |
565 | EFIAPI\r | |
566 | ScanMem32 (\r | |
567 | IN CONST VOID *Buffer,\r | |
568 | IN UINTN Length,\r | |
569 | IN UINT32 Value\r | |
570 | )\r | |
571 | {\r | |
572 | ASSERT (Buffer != NULL);\r | |
573 | ASSERT (((UINTN)Buffer & (sizeof (Value) - 1)) == 0);\r | |
574 | ASSERT (Length <= MAX_ADDRESS + (UINTN)Buffer + 1);\r | |
575 | \r | |
576 | if ((Length /= sizeof (Value)) == 0) {\r | |
577 | return NULL;\r | |
578 | }\r | |
579 | return (VOID*)InternalMemScanMem32 (Buffer, Length, Value);\r | |
580 | }\r | |
581 | \r | |
582 | /**\r | |
583 | Scans a target buffer for a 64-bit value, and returns a pointer to the\r | |
584 | matching 64-bit value in the target buffer.\r | |
585 | \r | |
586 | This function searches target the buffer specified by Buffer and Length from\r | |
587 | the lowest address to the highest address at 64-bit increments for a 64-bit\r | |
588 | value that matches Value. If a match is found, then a pointer to the matching\r | |
589 | value in the target buffer is returned. If no match is found, then NULL is\r | |
590 | returned. If Length is 0, then NULL is returned.\r | |
591 | \r | |
592 | If Buffer is NULL, then ASSERT().\r | |
593 | If Buffer is not aligned on a 64-bit boundary, then ASSERT().\r | |
594 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
595 | \r | |
596 | @param Buffer Pointer to the target buffer to scan.\r | |
597 | @param Length Number of bytes in Buffer to scan.\r | |
598 | @param Value Value to search for in the target buffer.\r | |
599 | \r | |
600 | @return Pointer to the first occurrence or NULL if not found.\r | |
601 | @retval NULL if Length == 0 or Value was not found.\r | |
602 | \r | |
603 | **/\r | |
604 | VOID *\r | |
605 | EFIAPI\r | |
606 | ScanMem64 (\r | |
607 | IN CONST VOID *Buffer,\r | |
608 | IN UINTN Length,\r | |
609 | IN UINT64 Value\r | |
610 | )\r | |
611 | {\r | |
612 | ASSERT (Buffer != NULL);\r | |
613 | ASSERT (((UINTN)Buffer & (sizeof (Value) - 1)) == 0);\r | |
614 | ASSERT (Length <= MAX_ADDRESS + (UINTN)Buffer + 1);\r | |
615 | \r | |
616 | if ((Length /= sizeof (Value)) == 0) {\r | |
617 | return NULL;\r | |
618 | }\r | |
619 | return (VOID*)InternalMemScanMem64 (Buffer, Length, Value);\r | |
620 | }\r |