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1439c255 | 1 | /** @file\r |
d1102dba | 2 | Support routines for memory allocation routines based\r |
1439c255 SZ |
3 | on boot services for Dxe phase drivers, with memory profile support.\r |
4 | \r | |
d1102dba | 5 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r |
9d510e61 | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
1439c255 SZ |
7 | \r |
8 | **/\r | |
9 | \r | |
10 | \r | |
11 | #include <Uefi.h>\r | |
12 | \r | |
13 | \r | |
14 | #include <Library/MemoryAllocationLib.h>\r | |
15 | #include <Library/UefiBootServicesTableLib.h>\r | |
16 | #include <Library/BaseMemoryLib.h>\r | |
17 | #include <Library/DebugLib.h>\r | |
18 | \r | |
19 | #include <Library/MemoryProfileLib.h>\r | |
20 | \r | |
21 | /**\r | |
22 | Allocates one or more 4KB pages of a certain memory type.\r | |
23 | \r | |
24 | Allocates the number of 4KB pages of a certain memory type and returns a pointer to the allocated\r | |
25 | buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned.\r | |
26 | If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
27 | \r | |
28 | @param MemoryType The type of memory to allocate.\r | |
29 | @param Pages The number of 4 KB pages to allocate.\r | |
30 | \r | |
31 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
32 | \r | |
33 | **/\r | |
34 | VOID *\r | |
35 | InternalAllocatePages (\r | |
d1102dba | 36 | IN EFI_MEMORY_TYPE MemoryType,\r |
1439c255 SZ |
37 | IN UINTN Pages\r |
38 | )\r | |
39 | {\r | |
40 | EFI_STATUS Status;\r | |
d1102dba | 41 | EFI_PHYSICAL_ADDRESS Memory;\r |
1439c255 SZ |
42 | \r |
43 | if (Pages == 0) {\r | |
44 | return NULL;\r | |
45 | }\r | |
46 | \r | |
47 | Status = gBS->AllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);\r | |
48 | if (EFI_ERROR (Status)) {\r | |
49 | return NULL;\r | |
50 | }\r | |
51 | return (VOID *) (UINTN) Memory;\r | |
52 | }\r | |
53 | \r | |
54 | /**\r | |
55 | Allocates one or more 4KB pages of type EfiBootServicesData.\r | |
56 | \r | |
57 | Allocates the number of 4KB pages of type EfiBootServicesData and returns a pointer to the\r | |
58 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r | |
59 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r | |
60 | returned.\r | |
61 | \r | |
62 | @param Pages The number of 4 KB pages to allocate.\r | |
63 | \r | |
64 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
65 | \r | |
66 | **/\r | |
67 | VOID *\r | |
68 | EFIAPI\r | |
69 | AllocatePages (\r | |
70 | IN UINTN Pages\r | |
71 | )\r | |
72 | {\r | |
73 | VOID *Buffer;\r | |
74 | \r | |
75 | Buffer = InternalAllocatePages (EfiBootServicesData, Pages);\r | |
76 | if (Buffer != NULL) {\r | |
77 | MemoryProfileLibRecord (\r | |
78 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
79 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_PAGES,\r | |
80 | EfiBootServicesData,\r | |
81 | Buffer,\r | |
82 | EFI_PAGES_TO_SIZE (Pages),\r | |
83 | NULL\r | |
84 | );\r | |
85 | }\r | |
86 | return Buffer;\r | |
87 | }\r | |
88 | \r | |
89 | /**\r | |
90 | Allocates one or more 4KB pages of type EfiRuntimeServicesData.\r | |
91 | \r | |
92 | Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the\r | |
93 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r | |
94 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r | |
95 | returned.\r | |
96 | \r | |
97 | @param Pages The number of 4 KB pages to allocate.\r | |
98 | \r | |
99 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
100 | \r | |
101 | **/\r | |
102 | VOID *\r | |
103 | EFIAPI\r | |
104 | AllocateRuntimePages (\r | |
105 | IN UINTN Pages\r | |
106 | )\r | |
107 | {\r | |
108 | VOID *Buffer;\r | |
109 | \r | |
110 | Buffer = InternalAllocatePages (EfiRuntimeServicesData, Pages);\r | |
111 | if (Buffer != NULL) {\r | |
112 | MemoryProfileLibRecord (\r | |
113 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
114 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RUNTIME_PAGES,\r | |
115 | EfiRuntimeServicesData,\r | |
116 | Buffer,\r | |
117 | EFI_PAGES_TO_SIZE (Pages),\r | |
118 | NULL\r | |
119 | );\r | |
120 | }\r | |
121 | return Buffer;\r | |
122 | }\r | |
123 | \r | |
124 | /**\r | |
125 | Allocates one or more 4KB pages of type EfiReservedMemoryType.\r | |
126 | \r | |
127 | Allocates the number of 4KB pages of type EfiReservedMemoryType and returns a pointer to the\r | |
128 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r | |
129 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r | |
130 | returned.\r | |
131 | \r | |
132 | @param Pages The number of 4 KB pages to allocate.\r | |
133 | \r | |
134 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
135 | \r | |
136 | **/\r | |
137 | VOID *\r | |
138 | EFIAPI\r | |
139 | AllocateReservedPages (\r | |
140 | IN UINTN Pages\r | |
141 | )\r | |
142 | {\r | |
143 | VOID *Buffer;\r | |
144 | \r | |
145 | Buffer = InternalAllocatePages (EfiReservedMemoryType, Pages);\r | |
146 | if (Buffer != NULL) {\r | |
147 | MemoryProfileLibRecord (\r | |
148 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
149 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RESERVED_PAGES,\r | |
150 | EfiReservedMemoryType,\r | |
151 | Buffer,\r | |
152 | EFI_PAGES_TO_SIZE (Pages),\r | |
153 | NULL\r | |
154 | );\r | |
155 | }\r | |
156 | return Buffer;\r | |
157 | }\r | |
158 | \r | |
159 | /**\r | |
160 | Frees one or more 4KB pages that were previously allocated with one of the page allocation\r | |
161 | functions in the Memory Allocation Library.\r | |
162 | \r | |
163 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r | |
164 | must have been allocated on a previous call to the page allocation services of the Memory\r | |
165 | Allocation Library. If it is not possible to free allocated pages, then this function will\r | |
166 | perform no actions.\r | |
d1102dba | 167 | \r |
1439c255 SZ |
168 | If Buffer was not allocated with a page allocation function in the Memory Allocation Library,\r |
169 | then ASSERT().\r | |
170 | If Pages is zero, then ASSERT().\r | |
d1102dba | 171 | \r |
1439c255 SZ |
172 | @param Buffer The pointer to the buffer of pages to free.\r |
173 | @param Pages The number of 4 KB pages to free.\r | |
174 | \r | |
175 | **/\r | |
176 | VOID\r | |
177 | EFIAPI\r | |
178 | FreePages (\r | |
179 | IN VOID *Buffer,\r | |
180 | IN UINTN Pages\r | |
181 | )\r | |
182 | {\r | |
183 | EFI_STATUS Status;\r | |
184 | \r | |
185 | ASSERT (Pages != 0);\r | |
186 | Status = gBS->FreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);\r | |
187 | ASSERT_EFI_ERROR (Status);\r | |
188 | }\r | |
189 | \r | |
190 | /**\r | |
191 | Allocates one or more 4KB pages of a certain memory type at a specified alignment.\r | |
192 | \r | |
193 | Allocates the number of 4KB pages specified by Pages of a certain memory type with an alignment\r | |
194 | specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned.\r | |
195 | If there is not enough memory at the specified alignment remaining to satisfy the request, then\r | |
196 | NULL is returned.\r | |
197 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
198 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r | |
199 | \r | |
200 | @param MemoryType The type of memory to allocate.\r | |
201 | @param Pages The number of 4 KB pages to allocate.\r | |
202 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
203 | If Alignment is zero, then byte alignment is used.\r | |
204 | \r | |
205 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
206 | \r | |
207 | **/\r | |
208 | VOID *\r | |
209 | InternalAllocateAlignedPages (\r | |
d1102dba | 210 | IN EFI_MEMORY_TYPE MemoryType,\r |
1439c255 SZ |
211 | IN UINTN Pages,\r |
212 | IN UINTN Alignment\r | |
213 | )\r | |
214 | {\r | |
215 | EFI_STATUS Status;\r | |
216 | EFI_PHYSICAL_ADDRESS Memory;\r | |
217 | UINTN AlignedMemory;\r | |
218 | UINTN AlignmentMask;\r | |
219 | UINTN UnalignedPages;\r | |
220 | UINTN RealPages;\r | |
221 | \r | |
222 | //\r | |
223 | // Alignment must be a power of two or zero.\r | |
224 | //\r | |
225 | ASSERT ((Alignment & (Alignment - 1)) == 0);\r | |
d1102dba | 226 | \r |
1439c255 SZ |
227 | if (Pages == 0) {\r |
228 | return NULL;\r | |
229 | }\r | |
230 | if (Alignment > EFI_PAGE_SIZE) {\r | |
231 | //\r | |
232 | // Calculate the total number of pages since alignment is larger than page size.\r | |
233 | //\r | |
234 | AlignmentMask = Alignment - 1;\r | |
235 | RealPages = Pages + EFI_SIZE_TO_PAGES (Alignment);\r | |
236 | //\r | |
237 | // Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.\r | |
238 | //\r | |
239 | ASSERT (RealPages > Pages);\r | |
d1102dba | 240 | \r |
1439c255 SZ |
241 | Status = gBS->AllocatePages (AllocateAnyPages, MemoryType, RealPages, &Memory);\r |
242 | if (EFI_ERROR (Status)) {\r | |
243 | return NULL;\r | |
244 | }\r | |
245 | AlignedMemory = ((UINTN) Memory + AlignmentMask) & ~AlignmentMask;\r | |
246 | UnalignedPages = EFI_SIZE_TO_PAGES (AlignedMemory - (UINTN) Memory);\r | |
247 | if (UnalignedPages > 0) {\r | |
248 | //\r | |
249 | // Free first unaligned page(s).\r | |
250 | //\r | |
251 | Status = gBS->FreePages (Memory, UnalignedPages);\r | |
252 | ASSERT_EFI_ERROR (Status);\r | |
253 | }\r | |
16f69227 | 254 | Memory = AlignedMemory + EFI_PAGES_TO_SIZE (Pages);\r |
1439c255 SZ |
255 | UnalignedPages = RealPages - Pages - UnalignedPages;\r |
256 | if (UnalignedPages > 0) {\r | |
257 | //\r | |
258 | // Free last unaligned page(s).\r | |
259 | //\r | |
260 | Status = gBS->FreePages (Memory, UnalignedPages);\r | |
261 | ASSERT_EFI_ERROR (Status);\r | |
262 | }\r | |
263 | } else {\r | |
264 | //\r | |
265 | // Do not over-allocate pages in this case.\r | |
266 | //\r | |
267 | Status = gBS->AllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);\r | |
268 | if (EFI_ERROR (Status)) {\r | |
269 | return NULL;\r | |
270 | }\r | |
271 | AlignedMemory = (UINTN) Memory;\r | |
272 | }\r | |
273 | return (VOID *) AlignedMemory;\r | |
274 | }\r | |
275 | \r | |
276 | /**\r | |
277 | Allocates one or more 4KB pages of type EfiBootServicesData at a specified alignment.\r | |
278 | \r | |
279 | Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData with an\r | |
280 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
281 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
282 | request, then NULL is returned.\r | |
d1102dba | 283 | \r |
1439c255 SZ |
284 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
285 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r | |
286 | \r | |
287 | @param Pages The number of 4 KB pages to allocate.\r | |
288 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
289 | If Alignment is zero, then byte alignment is used.\r | |
290 | \r | |
291 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
292 | \r | |
293 | **/\r | |
294 | VOID *\r | |
295 | EFIAPI\r | |
296 | AllocateAlignedPages (\r | |
297 | IN UINTN Pages,\r | |
298 | IN UINTN Alignment\r | |
299 | )\r | |
300 | {\r | |
301 | VOID *Buffer;\r | |
302 | \r | |
303 | Buffer = InternalAllocateAlignedPages (EfiBootServicesData, Pages, Alignment);\r | |
304 | if (Buffer != NULL) {\r | |
305 | MemoryProfileLibRecord (\r | |
306 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
307 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_ALIGNED_PAGES,\r | |
308 | EfiBootServicesData,\r | |
309 | Buffer,\r | |
310 | EFI_PAGES_TO_SIZE (Pages),\r | |
311 | NULL\r | |
312 | );\r | |
313 | }\r | |
314 | return Buffer;\r | |
315 | }\r | |
316 | \r | |
317 | /**\r | |
318 | Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.\r | |
319 | \r | |
320 | Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an\r | |
321 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
322 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
323 | request, then NULL is returned.\r | |
d1102dba | 324 | \r |
1439c255 SZ |
325 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
326 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r | |
327 | \r | |
328 | @param Pages The number of 4 KB pages to allocate.\r | |
329 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
330 | If Alignment is zero, then byte alignment is used.\r | |
331 | \r | |
332 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
333 | \r | |
334 | **/\r | |
335 | VOID *\r | |
336 | EFIAPI\r | |
337 | AllocateAlignedRuntimePages (\r | |
338 | IN UINTN Pages,\r | |
339 | IN UINTN Alignment\r | |
340 | )\r | |
341 | {\r | |
342 | VOID *Buffer;\r | |
343 | \r | |
344 | Buffer = InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);\r | |
345 | if (Buffer != NULL) {\r | |
346 | MemoryProfileLibRecord (\r | |
347 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
348 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_ALIGNED_RUNTIME_PAGES,\r | |
349 | EfiRuntimeServicesData,\r | |
350 | Buffer,\r | |
351 | EFI_PAGES_TO_SIZE (Pages),\r | |
352 | NULL\r | |
353 | );\r | |
354 | }\r | |
355 | return Buffer;\r | |
356 | }\r | |
357 | \r | |
358 | /**\r | |
359 | Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.\r | |
360 | \r | |
361 | Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType with an\r | |
362 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
363 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
364 | request, then NULL is returned.\r | |
d1102dba | 365 | \r |
1439c255 SZ |
366 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
367 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r | |
368 | \r | |
369 | @param Pages The number of 4 KB pages to allocate.\r | |
370 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
371 | If Alignment is zero, then byte alignment is used.\r | |
372 | \r | |
373 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
374 | \r | |
375 | **/\r | |
376 | VOID *\r | |
377 | EFIAPI\r | |
378 | AllocateAlignedReservedPages (\r | |
379 | IN UINTN Pages,\r | |
380 | IN UINTN Alignment\r | |
381 | )\r | |
382 | {\r | |
383 | VOID *Buffer;\r | |
384 | \r | |
385 | Buffer = InternalAllocateAlignedPages (EfiReservedMemoryType, Pages, Alignment);\r | |
386 | if (Buffer != NULL) {\r | |
387 | MemoryProfileLibRecord (\r | |
388 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
389 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_ALIGNED_RESERVED_PAGES,\r | |
390 | EfiReservedMemoryType,\r | |
391 | Buffer,\r | |
392 | EFI_PAGES_TO_SIZE (Pages),\r | |
393 | NULL\r | |
394 | );\r | |
395 | }\r | |
396 | return Buffer;\r | |
397 | }\r | |
398 | \r | |
399 | /**\r | |
400 | Frees one or more 4KB pages that were previously allocated with one of the aligned page\r | |
401 | allocation functions in the Memory Allocation Library.\r | |
402 | \r | |
403 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r | |
404 | must have been allocated on a previous call to the aligned page allocation services of the Memory\r | |
d1102dba | 405 | Allocation Library. If it is not possible to free allocated pages, then this function will\r |
1439c255 | 406 | perform no actions.\r |
d1102dba | 407 | \r |
1439c255 SZ |
408 | If Buffer was not allocated with an aligned page allocation function in the Memory Allocation\r |
409 | Library, then ASSERT().\r | |
410 | If Pages is zero, then ASSERT().\r | |
d1102dba | 411 | \r |
1439c255 SZ |
412 | @param Buffer The pointer to the buffer of pages to free.\r |
413 | @param Pages The number of 4 KB pages to free.\r | |
414 | \r | |
415 | **/\r | |
416 | VOID\r | |
417 | EFIAPI\r | |
418 | FreeAlignedPages (\r | |
419 | IN VOID *Buffer,\r | |
420 | IN UINTN Pages\r | |
421 | )\r | |
422 | {\r | |
423 | EFI_STATUS Status;\r | |
424 | \r | |
425 | ASSERT (Pages != 0);\r | |
426 | Status = gBS->FreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);\r | |
427 | ASSERT_EFI_ERROR (Status);\r | |
428 | }\r | |
429 | \r | |
430 | /**\r | |
431 | Allocates a buffer of a certain pool type.\r | |
432 | \r | |
433 | Allocates the number bytes specified by AllocationSize of a certain pool type and returns a\r | |
434 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
435 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
436 | \r | |
437 | @param MemoryType The type of memory to allocate.\r | |
438 | @param AllocationSize The number of bytes to allocate.\r | |
439 | \r | |
440 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
441 | \r | |
442 | **/\r | |
443 | VOID *\r | |
444 | InternalAllocatePool (\r | |
d1102dba | 445 | IN EFI_MEMORY_TYPE MemoryType,\r |
1439c255 SZ |
446 | IN UINTN AllocationSize\r |
447 | )\r | |
448 | {\r | |
449 | EFI_STATUS Status;\r | |
450 | VOID *Memory;\r | |
451 | \r | |
452 | Status = gBS->AllocatePool (MemoryType, AllocationSize, &Memory);\r | |
453 | if (EFI_ERROR (Status)) {\r | |
454 | Memory = NULL;\r | |
455 | }\r | |
456 | return Memory;\r | |
457 | }\r | |
458 | \r | |
459 | /**\r | |
460 | Allocates a buffer of type EfiBootServicesData.\r | |
461 | \r | |
462 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData and returns a\r | |
463 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
464 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
465 | \r | |
466 | @param AllocationSize The number of bytes to allocate.\r | |
467 | \r | |
468 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
469 | \r | |
470 | **/\r | |
471 | VOID *\r | |
472 | EFIAPI\r | |
473 | AllocatePool (\r | |
474 | IN UINTN AllocationSize\r | |
475 | )\r | |
476 | {\r | |
477 | VOID *Buffer;\r | |
478 | \r | |
479 | Buffer = InternalAllocatePool (EfiBootServicesData, AllocationSize);\r | |
480 | if (Buffer != NULL) {\r | |
481 | MemoryProfileLibRecord (\r | |
482 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
483 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_POOL,\r | |
484 | EfiBootServicesData,\r | |
485 | Buffer,\r | |
486 | AllocationSize,\r | |
487 | NULL\r | |
488 | );\r | |
489 | }\r | |
490 | return Buffer;\r | |
491 | }\r | |
492 | \r | |
493 | /**\r | |
494 | Allocates a buffer of type EfiRuntimeServicesData.\r | |
495 | \r | |
496 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns\r | |
497 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
498 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
499 | \r | |
500 | @param AllocationSize The number of bytes to allocate.\r | |
501 | \r | |
502 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
503 | \r | |
504 | **/\r | |
505 | VOID *\r | |
506 | EFIAPI\r | |
507 | AllocateRuntimePool (\r | |
508 | IN UINTN AllocationSize\r | |
509 | )\r | |
510 | {\r | |
511 | VOID *Buffer;\r | |
512 | \r | |
513 | Buffer = InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);\r | |
514 | if (Buffer != NULL) {\r | |
515 | MemoryProfileLibRecord (\r | |
516 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
517 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RUNTIME_POOL,\r | |
518 | EfiRuntimeServicesData,\r | |
519 | Buffer,\r | |
520 | AllocationSize,\r | |
521 | NULL\r | |
522 | );\r | |
523 | }\r | |
524 | return Buffer;\r | |
525 | }\r | |
526 | \r | |
527 | /**\r | |
528 | Allocates a buffer of type EfiReservedMemoryType.\r | |
529 | \r | |
530 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType and returns\r | |
531 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
532 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
533 | \r | |
534 | @param AllocationSize The number of bytes to allocate.\r | |
535 | \r | |
536 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
537 | \r | |
538 | **/\r | |
539 | VOID *\r | |
540 | EFIAPI\r | |
541 | AllocateReservedPool (\r | |
542 | IN UINTN AllocationSize\r | |
543 | )\r | |
544 | {\r | |
545 | VOID *Buffer;\r | |
546 | \r | |
547 | Buffer = InternalAllocatePool (EfiReservedMemoryType, AllocationSize);\r | |
548 | if (Buffer != NULL) {\r | |
549 | MemoryProfileLibRecord (\r | |
550 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
551 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RESERVED_POOL,\r | |
552 | EfiReservedMemoryType,\r | |
553 | Buffer,\r | |
554 | AllocationSize,\r | |
555 | NULL\r | |
556 | );\r | |
557 | }\r | |
558 | return Buffer;\r | |
559 | }\r | |
560 | \r | |
561 | /**\r | |
562 | Allocates and zeros a buffer of a certain pool type.\r | |
563 | \r | |
564 | Allocates the number bytes specified by AllocationSize of a certain pool type, clears the buffer\r | |
565 | with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid\r | |
566 | buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request,\r | |
567 | then NULL is returned.\r | |
568 | \r | |
569 | @param PoolType The type of memory to allocate.\r | |
570 | @param AllocationSize The number of bytes to allocate and zero.\r | |
571 | \r | |
572 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
573 | \r | |
574 | **/\r | |
575 | VOID *\r | |
576 | InternalAllocateZeroPool (\r | |
d1102dba | 577 | IN EFI_MEMORY_TYPE PoolType,\r |
1439c255 | 578 | IN UINTN AllocationSize\r |
d1102dba | 579 | )\r |
1439c255 SZ |
580 | {\r |
581 | VOID *Memory;\r | |
582 | \r | |
583 | Memory = InternalAllocatePool (PoolType, AllocationSize);\r | |
584 | if (Memory != NULL) {\r | |
585 | Memory = ZeroMem (Memory, AllocationSize);\r | |
586 | }\r | |
587 | return Memory;\r | |
588 | }\r | |
589 | \r | |
590 | /**\r | |
591 | Allocates and zeros a buffer of type EfiBootServicesData.\r | |
592 | \r | |
593 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, clears the\r | |
594 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
595 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
596 | request, then NULL is returned.\r | |
597 | \r | |
598 | @param AllocationSize The number of bytes to allocate and zero.\r | |
599 | \r | |
600 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
601 | \r | |
602 | **/\r | |
603 | VOID *\r | |
604 | EFIAPI\r | |
605 | AllocateZeroPool (\r | |
606 | IN UINTN AllocationSize\r | |
607 | )\r | |
608 | {\r | |
609 | VOID *Buffer;\r | |
610 | \r | |
611 | Buffer = InternalAllocateZeroPool (EfiBootServicesData, AllocationSize);\r | |
612 | if (Buffer != NULL) {\r | |
613 | MemoryProfileLibRecord (\r | |
614 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
615 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_ZERO_POOL,\r | |
616 | EfiBootServicesData,\r | |
617 | Buffer,\r | |
618 | AllocationSize,\r | |
619 | NULL\r | |
620 | );\r | |
621 | }\r | |
622 | return Buffer;\r | |
623 | }\r | |
624 | \r | |
625 | /**\r | |
626 | Allocates and zeros a buffer of type EfiRuntimeServicesData.\r | |
627 | \r | |
628 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the\r | |
629 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
630 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
631 | request, then NULL is returned.\r | |
632 | \r | |
633 | @param AllocationSize The number of bytes to allocate and zero.\r | |
634 | \r | |
635 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
636 | \r | |
637 | **/\r | |
638 | VOID *\r | |
639 | EFIAPI\r | |
640 | AllocateRuntimeZeroPool (\r | |
641 | IN UINTN AllocationSize\r | |
642 | )\r | |
643 | {\r | |
644 | VOID *Buffer;\r | |
645 | \r | |
646 | Buffer = InternalAllocateZeroPool (EfiRuntimeServicesData, AllocationSize);\r | |
647 | if (Buffer != NULL) {\r | |
648 | MemoryProfileLibRecord (\r | |
649 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
650 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RUNTIME_ZERO_POOL,\r | |
651 | EfiRuntimeServicesData,\r | |
652 | Buffer,\r | |
653 | AllocationSize,\r | |
654 | NULL\r | |
655 | );\r | |
656 | }\r | |
657 | return Buffer;\r | |
658 | }\r | |
659 | \r | |
660 | /**\r | |
661 | Allocates and zeros a buffer of type EfiReservedMemoryType.\r | |
662 | \r | |
663 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, clears the\r | |
664 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
665 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
666 | request, then NULL is returned.\r | |
667 | \r | |
668 | @param AllocationSize The number of bytes to allocate and zero.\r | |
669 | \r | |
670 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
671 | \r | |
672 | **/\r | |
673 | VOID *\r | |
674 | EFIAPI\r | |
675 | AllocateReservedZeroPool (\r | |
676 | IN UINTN AllocationSize\r | |
677 | )\r | |
678 | {\r | |
679 | VOID *Buffer;\r | |
680 | \r | |
681 | Buffer = InternalAllocateZeroPool (EfiReservedMemoryType, AllocationSize);\r | |
682 | if (Buffer != NULL) {\r | |
683 | MemoryProfileLibRecord (\r | |
684 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
685 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RESERVED_ZERO_POOL,\r | |
686 | EfiReservedMemoryType,\r | |
687 | Buffer,\r | |
688 | AllocationSize,\r | |
689 | NULL\r | |
690 | );\r | |
691 | }\r | |
692 | return Buffer;\r | |
693 | }\r | |
694 | \r | |
695 | /**\r | |
696 | Copies a buffer to an allocated buffer of a certain pool type.\r | |
697 | \r | |
698 | Allocates the number bytes specified by AllocationSize of a certain pool type, copies\r | |
699 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
700 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
701 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
702 | If Buffer is NULL, then ASSERT().\r | |
d1102dba | 703 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
1439c255 SZ |
704 | \r |
705 | @param PoolType The type of pool to allocate.\r | |
706 | @param AllocationSize The number of bytes to allocate and zero.\r | |
707 | @param Buffer The buffer to copy to the allocated buffer.\r | |
708 | \r | |
709 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
710 | \r | |
711 | **/\r | |
712 | VOID *\r | |
713 | InternalAllocateCopyPool (\r | |
d1102dba | 714 | IN EFI_MEMORY_TYPE PoolType,\r |
1439c255 SZ |
715 | IN UINTN AllocationSize,\r |
716 | IN CONST VOID *Buffer\r | |
d1102dba | 717 | )\r |
1439c255 SZ |
718 | {\r |
719 | VOID *Memory;\r | |
720 | \r | |
721 | ASSERT (Buffer != NULL);\r | |
722 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r | |
723 | \r | |
724 | Memory = InternalAllocatePool (PoolType, AllocationSize);\r | |
725 | if (Memory != NULL) {\r | |
726 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r | |
727 | }\r | |
728 | return Memory;\r | |
d1102dba | 729 | }\r |
1439c255 SZ |
730 | \r |
731 | /**\r | |
732 | Copies a buffer to an allocated buffer of type EfiBootServicesData.\r | |
733 | \r | |
734 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, copies\r | |
735 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
736 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
737 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
d1102dba | 738 | \r |
1439c255 | 739 | If Buffer is NULL, then ASSERT().\r |
d1102dba | 740 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
1439c255 SZ |
741 | \r |
742 | @param AllocationSize The number of bytes to allocate and zero.\r | |
743 | @param Buffer The buffer to copy to the allocated buffer.\r | |
744 | \r | |
745 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
746 | \r | |
747 | **/\r | |
748 | VOID *\r | |
749 | EFIAPI\r | |
750 | AllocateCopyPool (\r | |
751 | IN UINTN AllocationSize,\r | |
752 | IN CONST VOID *Buffer\r | |
753 | )\r | |
754 | {\r | |
755 | VOID *NewBuffer;\r | |
756 | \r | |
757 | NewBuffer = InternalAllocateCopyPool (EfiBootServicesData, AllocationSize, Buffer);\r | |
758 | if (NewBuffer != NULL) {\r | |
759 | MemoryProfileLibRecord (\r | |
760 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
761 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_COPY_POOL,\r | |
762 | EfiBootServicesData,\r | |
763 | NewBuffer,\r | |
764 | AllocationSize,\r | |
765 | NULL\r | |
766 | );\r | |
767 | }\r | |
768 | return NewBuffer;\r | |
769 | }\r | |
770 | \r | |
771 | /**\r | |
772 | Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.\r | |
773 | \r | |
774 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies\r | |
775 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
776 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
777 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
d1102dba | 778 | \r |
1439c255 | 779 | If Buffer is NULL, then ASSERT().\r |
d1102dba | 780 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
1439c255 SZ |
781 | \r |
782 | @param AllocationSize The number of bytes to allocate and zero.\r | |
783 | @param Buffer The buffer to copy to the allocated buffer.\r | |
784 | \r | |
785 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
786 | \r | |
787 | **/\r | |
788 | VOID *\r | |
789 | EFIAPI\r | |
790 | AllocateRuntimeCopyPool (\r | |
791 | IN UINTN AllocationSize,\r | |
792 | IN CONST VOID *Buffer\r | |
793 | )\r | |
794 | {\r | |
795 | VOID *NewBuffer;\r | |
796 | \r | |
797 | NewBuffer = InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer);\r | |
798 | if (NewBuffer != NULL) {\r | |
799 | MemoryProfileLibRecord (\r | |
800 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
801 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RUNTIME_COPY_POOL,\r | |
802 | EfiRuntimeServicesData,\r | |
803 | NewBuffer,\r | |
804 | AllocationSize,\r | |
805 | NULL\r | |
806 | );\r | |
807 | }\r | |
808 | return NewBuffer;\r | |
809 | }\r | |
810 | \r | |
811 | /**\r | |
812 | Copies a buffer to an allocated buffer of type EfiReservedMemoryType.\r | |
813 | \r | |
814 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, copies\r | |
815 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
816 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
817 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
d1102dba | 818 | \r |
1439c255 | 819 | If Buffer is NULL, then ASSERT().\r |
d1102dba | 820 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
1439c255 SZ |
821 | \r |
822 | @param AllocationSize The number of bytes to allocate and zero.\r | |
823 | @param Buffer The buffer to copy to the allocated buffer.\r | |
824 | \r | |
825 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
826 | \r | |
827 | **/\r | |
828 | VOID *\r | |
829 | EFIAPI\r | |
830 | AllocateReservedCopyPool (\r | |
831 | IN UINTN AllocationSize,\r | |
832 | IN CONST VOID *Buffer\r | |
833 | )\r | |
834 | {\r | |
835 | VOID *NewBuffer;\r | |
836 | \r | |
837 | NewBuffer = InternalAllocateCopyPool (EfiReservedMemoryType, AllocationSize, Buffer);\r | |
838 | if (NewBuffer != NULL) {\r | |
839 | MemoryProfileLibRecord (\r | |
840 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
841 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RESERVED_COPY_POOL,\r | |
842 | EfiRuntimeServicesData,\r | |
843 | NewBuffer,\r | |
844 | AllocationSize,\r | |
845 | NULL\r | |
846 | );\r | |
847 | }\r | |
848 | return NewBuffer;\r | |
849 | }\r | |
850 | \r | |
851 | /**\r | |
852 | Reallocates a buffer of a specified memory type.\r | |
853 | \r | |
854 | Allocates and zeros the number bytes specified by NewSize from memory of the type\r | |
d1102dba LG |
855 | specified by PoolType. If OldBuffer is not NULL, then the smaller of OldSize and\r |
856 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r | |
857 | OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r | |
858 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r | |
1439c255 | 859 | enough memory remaining to satisfy the request, then NULL is returned.\r |
d1102dba | 860 | \r |
1439c255 SZ |
861 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r |
862 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
863 | \r | |
864 | @param PoolType The type of pool to allocate.\r | |
865 | @param OldSize The size, in bytes, of OldBuffer.\r | |
866 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
d1102dba | 867 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r |
1439c255 SZ |
868 | parameter that may be NULL.\r |
869 | \r | |
870 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
871 | \r | |
872 | **/\r | |
873 | VOID *\r | |
874 | InternalReallocatePool (\r | |
d1102dba | 875 | IN EFI_MEMORY_TYPE PoolType,\r |
1439c255 SZ |
876 | IN UINTN OldSize,\r |
877 | IN UINTN NewSize,\r | |
878 | IN VOID *OldBuffer OPTIONAL\r | |
879 | )\r | |
880 | {\r | |
881 | VOID *NewBuffer;\r | |
882 | \r | |
883 | NewBuffer = InternalAllocateZeroPool (PoolType, NewSize);\r | |
884 | if (NewBuffer != NULL && OldBuffer != NULL) {\r | |
885 | CopyMem (NewBuffer, OldBuffer, MIN (OldSize, NewSize));\r | |
886 | FreePool (OldBuffer);\r | |
887 | }\r | |
888 | return NewBuffer;\r | |
889 | }\r | |
890 | \r | |
891 | /**\r | |
892 | Reallocates a buffer of type EfiBootServicesData.\r | |
893 | \r | |
894 | Allocates and zeros the number bytes specified by NewSize from memory of type\r | |
d1102dba LG |
895 | EfiBootServicesData. If OldBuffer is not NULL, then the smaller of OldSize and\r |
896 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r | |
897 | OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r | |
898 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r | |
1439c255 | 899 | enough memory remaining to satisfy the request, then NULL is returned.\r |
d1102dba | 900 | \r |
1439c255 SZ |
901 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r |
902 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
903 | \r | |
904 | @param OldSize The size, in bytes, of OldBuffer.\r | |
905 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
d1102dba | 906 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r |
1439c255 SZ |
907 | parameter that may be NULL.\r |
908 | \r | |
909 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
910 | \r | |
911 | **/\r | |
912 | VOID *\r | |
913 | EFIAPI\r | |
914 | ReallocatePool (\r | |
915 | IN UINTN OldSize,\r | |
916 | IN UINTN NewSize,\r | |
917 | IN VOID *OldBuffer OPTIONAL\r | |
918 | )\r | |
919 | {\r | |
920 | VOID *Buffer;\r | |
921 | \r | |
922 | Buffer = InternalReallocatePool (EfiBootServicesData, OldSize, NewSize, OldBuffer);\r | |
923 | if (Buffer != NULL) {\r | |
924 | MemoryProfileLibRecord (\r | |
925 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
926 | MEMORY_PROFILE_ACTION_LIB_REALLOCATE_POOL,\r | |
927 | EfiBootServicesData,\r | |
928 | Buffer,\r | |
929 | NewSize,\r | |
930 | NULL\r | |
931 | );\r | |
932 | }\r | |
933 | return Buffer;\r | |
934 | }\r | |
935 | \r | |
936 | /**\r | |
937 | Reallocates a buffer of type EfiRuntimeServicesData.\r | |
938 | \r | |
939 | Allocates and zeros the number bytes specified by NewSize from memory of type\r | |
d1102dba LG |
940 | EfiRuntimeServicesData. If OldBuffer is not NULL, then the smaller of OldSize and\r |
941 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r | |
942 | OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r | |
943 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r | |
1439c255 SZ |
944 | enough memory remaining to satisfy the request, then NULL is returned.\r |
945 | \r | |
946 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r | |
947 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
948 | \r | |
949 | @param OldSize The size, in bytes, of OldBuffer.\r | |
950 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
d1102dba | 951 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r |
1439c255 SZ |
952 | parameter that may be NULL.\r |
953 | \r | |
954 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
955 | \r | |
956 | **/\r | |
957 | VOID *\r | |
958 | EFIAPI\r | |
959 | ReallocateRuntimePool (\r | |
960 | IN UINTN OldSize,\r | |
961 | IN UINTN NewSize,\r | |
962 | IN VOID *OldBuffer OPTIONAL\r | |
963 | )\r | |
964 | {\r | |
965 | VOID *Buffer;\r | |
966 | \r | |
967 | Buffer = InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);\r | |
968 | if (Buffer != NULL) {\r | |
969 | MemoryProfileLibRecord (\r | |
970 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
971 | MEMORY_PROFILE_ACTION_LIB_REALLOCATE_RUNTIME_POOL,\r | |
972 | EfiRuntimeServicesData,\r | |
973 | Buffer,\r | |
974 | NewSize,\r | |
975 | NULL\r | |
976 | );\r | |
977 | }\r | |
978 | return Buffer;\r | |
979 | }\r | |
980 | \r | |
981 | /**\r | |
982 | Reallocates a buffer of type EfiReservedMemoryType.\r | |
983 | \r | |
984 | Allocates and zeros the number bytes specified by NewSize from memory of type\r | |
d1102dba LG |
985 | EfiReservedMemoryType. If OldBuffer is not NULL, then the smaller of OldSize and\r |
986 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r | |
987 | OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r | |
988 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r | |
1439c255 SZ |
989 | enough memory remaining to satisfy the request, then NULL is returned.\r |
990 | \r | |
991 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r | |
992 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
993 | \r | |
994 | @param OldSize The size, in bytes, of OldBuffer.\r | |
995 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
d1102dba | 996 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r |
1439c255 SZ |
997 | parameter that may be NULL.\r |
998 | \r | |
999 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
1000 | \r | |
1001 | **/\r | |
1002 | VOID *\r | |
1003 | EFIAPI\r | |
1004 | ReallocateReservedPool (\r | |
1005 | IN UINTN OldSize,\r | |
1006 | IN UINTN NewSize,\r | |
1007 | IN VOID *OldBuffer OPTIONAL\r | |
1008 | )\r | |
1009 | {\r | |
1010 | VOID *Buffer;\r | |
1011 | \r | |
1012 | Buffer = InternalReallocatePool (EfiReservedMemoryType, OldSize, NewSize, OldBuffer);\r | |
1013 | if (Buffer != NULL) {\r | |
1014 | MemoryProfileLibRecord (\r | |
1015 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
1016 | MEMORY_PROFILE_ACTION_LIB_REALLOCATE_RESERVED_POOL,\r | |
1017 | EfiReservedMemoryType,\r | |
1018 | Buffer,\r | |
1019 | NewSize,\r | |
1020 | NULL\r | |
1021 | );\r | |
1022 | }\r | |
1023 | return Buffer;\r | |
1024 | }\r | |
1025 | \r | |
1026 | /**\r | |
1027 | Frees a buffer that was previously allocated with one of the pool allocation functions in the\r | |
1028 | Memory Allocation Library.\r | |
1029 | \r | |
1030 | Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the\r | |
1031 | pool allocation services of the Memory Allocation Library. If it is not possible to free pool\r | |
1032 | resources, then this function will perform no actions.\r | |
d1102dba | 1033 | \r |
1439c255 SZ |
1034 | If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,\r |
1035 | then ASSERT().\r | |
1036 | \r | |
1037 | @param Buffer The pointer to the buffer to free.\r | |
1038 | \r | |
1039 | **/\r | |
1040 | VOID\r | |
1041 | EFIAPI\r | |
1042 | FreePool (\r | |
1043 | IN VOID *Buffer\r | |
1044 | )\r | |
1045 | {\r | |
1046 | EFI_STATUS Status;\r | |
1047 | \r | |
1048 | Status = gBS->FreePool (Buffer);\r | |
1049 | ASSERT_EFI_ERROR (Status);\r | |
1050 | }\r | |
1051 | \r |