TianoCore EDK2 master
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#include <Uefi.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/EmuThunkLib.h>
Go to the source code of this file.
Functions | |
VOID * | InternalAllocatePages (IN EFI_MEMORY_TYPE MemoryType, IN UINTN Pages) |
VOID *EFIAPI | AllocatePages (IN UINTN Pages) |
VOID *EFIAPI | AllocateRuntimePages (IN UINTN Pages) |
VOID *EFIAPI | AllocateReservedPages (IN UINTN Pages) |
VOID EFIAPI | FreePages (IN VOID *Buffer, IN UINTN Pages) |
VOID * | InternalAllocateAlignedPages (IN EFI_MEMORY_TYPE MemoryType, IN UINTN Pages, IN UINTN Alignment) |
VOID *EFIAPI | AllocateAlignedPages (IN UINTN Pages, IN UINTN Alignment) |
VOID *EFIAPI | AllocateAlignedRuntimePages (IN UINTN Pages, IN UINTN Alignment) |
VOID *EFIAPI | AllocateAlignedReservedPages (IN UINTN Pages, IN UINTN Alignment) |
VOID EFIAPI | FreeAlignedPages (IN VOID *Buffer, IN UINTN Pages) |
VOID * | InternalAllocatePool (IN EFI_MEMORY_TYPE MemoryType, IN UINTN AllocationSize) |
VOID *EFIAPI | AllocatePool (IN UINTN AllocationSize) |
VOID *EFIAPI | AllocateRuntimePool (IN UINTN AllocationSize) |
VOID *EFIAPI | AllocateReservedPool (IN UINTN AllocationSize) |
VOID * | InternalAllocateZeroPool (IN EFI_MEMORY_TYPE PoolType, IN UINTN AllocationSize) |
VOID *EFIAPI | AllocateZeroPool (IN UINTN AllocationSize) |
VOID *EFIAPI | AllocateRuntimeZeroPool (IN UINTN AllocationSize) |
VOID *EFIAPI | AllocateReservedZeroPool (IN UINTN AllocationSize) |
VOID * | InternalAllocateCopyPool (IN EFI_MEMORY_TYPE PoolType, IN UINTN AllocationSize, IN CONST VOID *Buffer) |
VOID *EFIAPI | AllocateCopyPool (IN UINTN AllocationSize, IN CONST VOID *Buffer) |
VOID *EFIAPI | AllocateRuntimeCopyPool (IN UINTN AllocationSize, IN CONST VOID *Buffer) |
VOID *EFIAPI | AllocateReservedCopyPool (IN UINTN AllocationSize, IN CONST VOID *Buffer) |
VOID * | InternalReallocatePool (IN EFI_MEMORY_TYPE PoolType, IN UINTN OldSize, IN UINTN NewSize, IN VOID *OldBuffer OPTIONAL) |
VOID *EFIAPI | ReallocatePool (IN UINTN OldSize, IN UINTN NewSize, IN VOID *OldBuffer OPTIONAL) |
VOID *EFIAPI | ReallocateRuntimePool (IN UINTN OldSize, IN UINTN NewSize, IN VOID *OldBuffer OPTIONAL) |
VOID *EFIAPI | ReallocateReservedPool (IN UINTN OldSize, IN UINTN NewSize, IN VOID *OldBuffer OPTIONAL) |
VOID EFIAPI | FreePool (IN VOID *Buffer) |
Support routines for memory allocation routines based on boot services for Dxe phase drivers using OS malloc.
OS malloc is used so OS based malloc debugging tools can be used. If a single driver links against this lib protocols from other drivers, or EFI boot services can return a buffer that needs to freed using the EFI scheme. This is why the gEmuThunk->Free () can detect if the memory rang is for EFI so the right free can be called.
Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.
Portions copyright (c) 2011, Apple Inc. All rights reserved. SPDX-License-Identifier: BSD-2-Clause-Patent
Definition in file MemoryAllocationLib.c.
Allocates one or more 4KB pages of type EfiBootServicesData at a specified alignment.
Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData with an alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned. If there is not enough memory at the specified alignment remaining to satisfy the request, then NULL is returned.
If Alignment is not a power of two and Alignment is not zero, then ASSERT().
Pages | The number of 4 KB pages to allocate. |
Alignment | The requested alignment of the allocation. Must be a power of two. If Alignment is zero, then byte alignment is used. |
Definition at line 264 of file MemoryAllocationLib.c.
Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.
Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType with an alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned. If there is not enough memory at the specified alignment remaining to satisfy the request, then NULL is returned.
If Alignment is not a power of two and Alignment is not zero, then ASSERT().
Pages | The number of 4 KB pages to allocate. |
Alignment | The requested alignment of the allocation. Must be a power of two. If Alignment is zero, then byte alignment is used. |
Definition at line 318 of file MemoryAllocationLib.c.
Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.
Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned. If there is not enough memory at the specified alignment remaining to satisfy the request, then NULL is returned.
If Alignment is not a power of two and Alignment is not zero, then ASSERT().
Pages | The number of 4 KB pages to allocate. |
Alignment | The requested alignment of the allocation. Must be a power of two. If Alignment is zero, then byte alignment is used. |
Definition at line 291 of file MemoryAllocationLib.c.
Copies a buffer to an allocated buffer of type EfiBootServicesData.
Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, copies AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
If Buffer is NULL, then ASSERT(). If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
AllocationSize | The number of bytes to allocate and zero. |
Buffer | The buffer to copy to the allocated buffer. |
Definition at line 590 of file MemoryAllocationLib.c.
Allocates one or more 4KB pages of type EfiBootServicesData.
Allocates the number of 4KB pages of type EfiBootServicesData and returns a pointer to the allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
Pages | The number of 4 KB pages to allocate. |
Definition at line 70 of file MemoryAllocationLib.c.
Allocates a buffer of type EfiBootServicesData.
Allocates the number bytes specified by AllocationSize of type EfiBootServicesData and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
AllocationSize | The number of bytes to allocate. |
Definition at line 389 of file MemoryAllocationLib.c.
Copies a buffer to an allocated buffer of type EfiReservedMemoryType.
Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, copies AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
If Buffer is NULL, then ASSERT(). If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
AllocationSize | The number of bytes to allocate and zero. |
Buffer | The buffer to copy to the allocated buffer. |
Definition at line 644 of file MemoryAllocationLib.c.
Allocates one or more 4KB pages of type EfiReservedMemoryType.
Allocates the number of 4KB pages of type EfiReservedMemoryType and returns a pointer to the allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
Pages | The number of 4 KB pages to allocate. |
Definition at line 114 of file MemoryAllocationLib.c.
Allocates a buffer of type EfiReservedMemoryType.
Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
AllocationSize | The number of bytes to allocate. |
Definition at line 431 of file MemoryAllocationLib.c.
Allocates and zeros a buffer of type EfiReservedMemoryType.
Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, clears the buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
AllocationSize | The number of bytes to allocate and zero. |
Definition at line 527 of file MemoryAllocationLib.c.
Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.
Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
If Buffer is NULL, then ASSERT(). If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
AllocationSize | The number of bytes to allocate and zero. |
Buffer | The buffer to copy to the allocated buffer. |
Definition at line 617 of file MemoryAllocationLib.c.
Allocates one or more 4KB pages of type EfiRuntimeServicesData.
Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
Pages | The number of 4 KB pages to allocate. |
Definition at line 92 of file MemoryAllocationLib.c.
Allocates a buffer of type EfiRuntimeServicesData.
Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
AllocationSize | The number of bytes to allocate. |
Definition at line 410 of file MemoryAllocationLib.c.
Allocates and zeros a buffer of type EfiRuntimeServicesData.
Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
AllocationSize | The number of bytes to allocate and zero. |
Definition at line 505 of file MemoryAllocationLib.c.
Allocates and zeros a buffer of type EfiBootServicesData.
Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, clears the buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
AllocationSize | The number of bytes to allocate and zero. |
Definition at line 483 of file MemoryAllocationLib.c.
Frees one or more 4KB pages that were previously allocated with one of the aligned page allocation functions in the Memory Allocation Library.
Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer must have been allocated on a previous call to the aligned page allocation services of the Memory Allocation Library. If it is not possible to free allocated pages, then this function will perform no actions.
If Buffer was not allocated with an aligned page allocation function in the Memory Allocation Library, then ASSERT(). If Pages is zero, then ASSERT().
Buffer | The pointer to the buffer of pages to free. |
Pages | The number of 4 KB pages to free. |
Definition at line 345 of file MemoryAllocationLib.c.
Frees one or more 4KB pages that were previously allocated with one of the page allocation functions in the Memory Allocation Library.
Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer must have been allocated on a previous call to the page allocation services of the Memory Allocation Library. If it is not possible to free allocated pages, then this function will perform no actions.
If Buffer was not allocated with a page allocation function in the Memory Allocation Library, then ASSERT(). If Pages is zero, then ASSERT().
Buffer | The pointer to the buffer of pages to free. |
Pages | The number of 4 KB pages to free. |
Definition at line 140 of file MemoryAllocationLib.c.
VOID EFIAPI FreePool | ( | IN VOID * | Buffer | ) |
Frees a buffer that was previously allocated with one of the pool allocation functions in the Memory Allocation Library.
Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the pool allocation services of the Memory Allocation Library. If it is not possible to free pool resources, then this function will perform no actions.
If Buffer was not allocated with a pool allocation function in the Memory Allocation Library, then ASSERT().
Buffer | The pointer to the buffer to free. |
Definition at line 805 of file MemoryAllocationLib.c.
VOID * InternalAllocateAlignedPages | ( | IN EFI_MEMORY_TYPE | MemoryType, |
IN UINTN | Pages, | ||
IN UINTN | Alignment | ||
) |
Allocates one or more 4KB pages of a certain memory type at a specified alignment.
Allocates the number of 4KB pages specified by Pages of a certain memory type with an alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned. If there is not enough memory at the specified alignment remaining to satisfy the request, then NULL is returned. If Alignment is not a power of two and Alignment is not zero, then ASSERT().
MemoryType | The type of memory to allocate. |
Pages | The number of 4 KB pages to allocate. |
Alignment | The requested alignment of the allocation. Must be a power of two. If Alignment is zero, then byte alignment is used. |
Definition at line 175 of file MemoryAllocationLib.c.
VOID * InternalAllocateCopyPool | ( | IN EFI_MEMORY_TYPE | PoolType, |
IN UINTN | AllocationSize, | ||
IN CONST VOID * | Buffer | ||
) |
Copies a buffer to an allocated buffer of a certain pool type.
Allocates the number bytes specified by AllocationSize of a certain pool type, copies AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned. If Buffer is NULL, then ASSERT(). If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
PoolType | The type of pool to allocate. |
AllocationSize | The number of bytes to allocate and zero. |
Buffer | The buffer to copy to the allocated buffer. |
Definition at line 552 of file MemoryAllocationLib.c.
VOID * InternalAllocatePages | ( | IN EFI_MEMORY_TYPE | MemoryType, |
IN UINTN | Pages | ||
) |
Allocates one or more 4KB pages of a certain memory type.
Allocates the number of 4KB pages of a certain memory type and returns a pointer to the allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
MemoryType | The type of memory to allocate. |
Pages | The number of 4 KB pages to allocate. |
Definition at line 40 of file MemoryAllocationLib.c.
VOID * InternalAllocatePool | ( | IN EFI_MEMORY_TYPE | MemoryType, |
IN UINTN | AllocationSize | ||
) |
Allocates a buffer of a certain pool type.
Allocates the number bytes specified by AllocationSize of a certain pool type and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
MemoryType | The type of memory to allocate. |
AllocationSize | The number of bytes to allocate. |
Definition at line 367 of file MemoryAllocationLib.c.
VOID * InternalAllocateZeroPool | ( | IN EFI_MEMORY_TYPE | PoolType, |
IN UINTN | AllocationSize | ||
) |
Allocates and zeros a buffer of a certain pool type.
Allocates the number bytes specified by AllocationSize of a certain pool type, clears the buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
PoolType | The type of memory to allocate. |
AllocationSize | The number of bytes to allocate and zero. |
Definition at line 453 of file MemoryAllocationLib.c.
VOID * InternalReallocatePool | ( | IN EFI_MEMORY_TYPE | PoolType, |
IN UINTN | OldSize, | ||
IN UINTN | NewSize, | ||
IN VOID *OldBuffer | OPTIONAL | ||
) |
Reallocates a buffer of a specified memory type.
Allocates and zeros the number bytes specified by NewSize from memory of the type specified by PoolType. If OldBuffer is not NULL, then the smaller of OldSize and NewSize bytes are copied from OldBuffer to the newly allocated buffer, and OldBuffer is freed. A pointer to the newly allocated buffer is returned. If NewSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
If the allocation of the new buffer is successful and the smaller of NewSize and OldSize is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
PoolType | The type of pool to allocate. |
OldSize | The size, in bytes, of OldBuffer. |
NewSize | The size, in bytes, of the buffer to reallocate. |
OldBuffer | The buffer to copy to the allocated buffer. This is an optional parameter that may be NULL. |
Definition at line 675 of file MemoryAllocationLib.c.
Reallocates a buffer of type EfiBootServicesData.
Allocates and zeros the number bytes specified by NewSize from memory of type EfiBootServicesData. If OldBuffer is not NULL, then the smaller of OldSize and NewSize bytes are copied from OldBuffer to the newly allocated buffer, and OldBuffer is freed. A pointer to the newly allocated buffer is returned. If NewSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
If the allocation of the new buffer is successful and the smaller of NewSize and OldSize is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
OldSize | The size, in bytes, of OldBuffer. |
NewSize | The size, in bytes, of the buffer to reallocate. |
OldBuffer | The buffer to copy to the allocated buffer. This is an optional parameter that may be NULL. |
Definition at line 716 of file MemoryAllocationLib.c.
VOID *EFIAPI ReallocateReservedPool | ( | IN UINTN | OldSize, |
IN UINTN | NewSize, | ||
IN VOID *OldBuffer | OPTIONAL | ||
) |
Reallocates a buffer of type EfiReservedMemoryType.
Allocates and zeros the number bytes specified by NewSize from memory of type EfiReservedMemoryType. If OldBuffer is not NULL, then the smaller of OldSize and NewSize bytes are copied from OldBuffer to the newly allocated buffer, and OldBuffer is freed. A pointer to the newly allocated buffer is returned. If NewSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
If the allocation of the new buffer is successful and the smaller of NewSize and OldSize is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
OldSize | The size, in bytes, of OldBuffer. |
NewSize | The size, in bytes, of the buffer to reallocate. |
OldBuffer | The buffer to copy to the allocated buffer. This is an optional parameter that may be NULL. |
Definition at line 780 of file MemoryAllocationLib.c.
VOID *EFIAPI ReallocateRuntimePool | ( | IN UINTN | OldSize, |
IN UINTN | NewSize, | ||
IN VOID *OldBuffer | OPTIONAL | ||
) |
Reallocates a buffer of type EfiRuntimeServicesData.
Allocates and zeros the number bytes specified by NewSize from memory of type EfiRuntimeServicesData. If OldBuffer is not NULL, then the smaller of OldSize and NewSize bytes are copied from OldBuffer to the newly allocated buffer, and OldBuffer is freed. A pointer to the newly allocated buffer is returned. If NewSize is 0, then a valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
If the allocation of the new buffer is successful and the smaller of NewSize and OldSize is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
OldSize | The size, in bytes, of OldBuffer. |
NewSize | The size, in bytes, of the buffer to reallocate. |
OldBuffer | The buffer to copy to the allocated buffer. This is an optional parameter that may be NULL. |
Definition at line 748 of file MemoryAllocationLib.c.