mirror of https://github.com/acidanthera/audk.git
201 lines
8.1 KiB
C
201 lines
8.1 KiB
C
/** @file
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Internal include file of DXE Memory Allocation Library.
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name: MemoryAllocationLibInternals.h
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**/
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#ifndef __DXE_MEMORY_ALLOCATION_LIB_INTERNALS_H__
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#define __DXE_MEMORY_ALLOCATION_LIB_INTERNALS_H__
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/**
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Allocates one or more 4KB pages of a certain memory type.
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Allocates the number of 4KB pages of a certain memory type and returns a pointer to the allocated
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buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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@param MemoryType The type of memory to allocate.
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@param Pages The number of 4 KB pages to allocate.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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InternalAllocatePages (
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN Pages
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);
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/**
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Allocates one or more 4KB pages of a certain memory type at a specified alignment.
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Allocates the number of 4KB pages specified by Pages of a certain memory type with an alignment
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specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned.
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If there is not enough memory at the specified alignment remaining to satisfy the request, then
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NULL is returned.
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If Alignment is not a power of two and Alignment is not zero, then ASSERT().
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@param MemoryType The type of memory to allocate.
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@param Pages The number of 4 KB pages to allocate.
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@param Alignment The requested alignment of the allocation. Must be a power of two.
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If Alignment is zero, then byte alignment is used.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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InternalAllocateAlignedPages (
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN Pages,
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IN UINTN Alignment
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);
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/**
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Allocates a buffer of a certain pool type.
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Allocates the number bytes specified by AllocationSize of a certain pool type and returns a
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pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is
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returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
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@param MemoryType The type of memory to allocate.
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@param AllocationSize The number of bytes to allocate.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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InternalAllocatePool (
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN AllocationSize
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);
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/**
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Allocates and zeros a buffer of a certian pool type.
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Allocates the number bytes specified by AllocationSize of a certian pool type, clears the buffer
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with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid
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buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request,
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then NULL is returned.
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@param PoolType The type of memory to allocate.
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@param AllocationSize The number of bytes to allocate and zero.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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InternalAllocateZeroPool (
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IN EFI_MEMORY_TYPE PoolType,
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IN UINTN AllocationSize
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);
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/**
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Copies a buffer to an allocated buffer of a certian pool type.
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Allocates the number bytes specified by AllocationSize of a certian pool type, copies
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AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the
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allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there
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is not enough memory remaining to satisfy the request, then NULL is returned.
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If Buffer is NULL, then ASSERT().
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If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT().
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@param PoolType The type of pool to allocate.
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@param AllocationSize The number of bytes to allocate and zero.
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@param Buffer The buffer to copy to the allocated buffer.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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InternalAllocateCopyPool (
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IN EFI_MEMORY_TYPE PoolType,
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IN UINTN AllocationSize,
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IN CONST VOID *Buffer
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);
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/**
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Allocates a buffer of a certain pool type at a specified alignment.
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Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment
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specified by Alignment. The allocated buffer is returned. If AllocationSize is 0, then a valid
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buffer of 0 size is returned. If there is not enough memory at the specified alignment remaining
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to satisfy the request, then NULL is returned.
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If Alignment is not a power of two and Alignment is not zero, then ASSERT().
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@param PoolType The type of pool to allocate.
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@param AllocationSize The number of bytes to allocate.
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@param Alignment The requested alignment of the allocation. Must be a power of two. If Alignment is zero, then byte alignment is used.
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If Alignment is zero, then byte alignment is used.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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InternalAllocateAlignedPool (
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IN EFI_MEMORY_TYPE PoolType,
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IN UINTN AllocationSize,
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IN UINTN Alignment
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);
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/**
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Allocates and zeros a buffer of a certain pool type at a specified alignment.
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Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment
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specified by Alignment, clears the buffer with zeros, and returns a pointer to the allocated
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buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not
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enough memory at the specified alignment remaining to satisfy the request, then NULL is returned.
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If Alignment is not a power of two and Alignment is not zero, then ASSERT().
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@param PoolType The type of pool to allocate.
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@param AllocationSize The number of bytes to allocate.
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@param Alignment The requested alignment of the allocation. Must be a power of two.
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If Alignment is zero, then byte alignment is used.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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InternalAllocateAlignedZeroPool (
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IN EFI_MEMORY_TYPE PoolType,
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IN UINTN AllocationSize,
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IN UINTN Alignment
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);
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/**
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Copies a buffer to an allocated buffer of a certain pool type at a specified alignment.
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Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment
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specified by Alignment. The allocated buffer is returned. If AllocationSize is 0, then a valid
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buffer of 0 size is returned. If there is not enough memory at the specified alignment remaining
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to satisfy the request, then NULL is returned.
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If Alignment is not a power of two and Alignment is not zero, then ASSERT().
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@param PoolType The type of pool to allocate.
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@param AllocationSize The number of bytes to allocate.
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@param Buffer The buffer to copy to the allocated buffer.
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@param Alignment The requested alignment of the allocation. Must be a power of two.
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If Alignment is zero, then byte alignment is used.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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InternalAllocateAlignedCopyPool (
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IN EFI_MEMORY_TYPE PoolType,
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IN UINTN AllocationSize,
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IN CONST VOID *Buffer,
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IN UINTN Alignment
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);
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#endif
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