+++ /dev/null
-/*++\r
-\r
-Copyright (c) 2004 - 2006, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php \r
- \r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
-\r
-\r
-Module Name:\r
-\r
- Unaligned.c\r
- \r
-Abstract: \r
-\r
- Unaligned access functions of BaseLib.\r
-\r
---*/\r
-\r
-#include "BaseLibInternals.h"\r
-\r
-/**\r
- Reads a 16-bit value from memory that may be unaligned.\r
-\r
- This function returns the 16-bit value pointed to by Buffer. The function\r
- guarantees that the read operation does not produce an alignment fault.\r
-\r
- If the Buffer is NULL, then ASSERT().\r
-\r
- @param Buffer Pointer to a 16-bit value that may be unaligned.\r
-\r
- @return *Uint16\r
-\r
-**/\r
-UINT16\r
-EFIAPI\r
-ReadUnaligned16 (\r
- IN CONST UINT16 *Buffer\r
- )\r
-{\r
- ASSERT (Buffer != NULL);\r
-\r
- return *Buffer;\r
-}\r
-\r
-/**\r
- Writes a 16-bit value to memory that may be unaligned.\r
-\r
- This function writes the 16-bit value specified by Value to Buffer. Value is\r
- returned. The function guarantees that the write operation does not produce\r
- an alignment fault.\r
-\r
- If the Buffer is NULL, then ASSERT().\r
-\r
- @param Buffer Pointer to a 16-bit value that may be unaligned.\r
- @param Value 16-bit value to write to Buffer.\r
-\r
- @return Value\r
-\r
-**/\r
-UINT16\r
-EFIAPI\r
-WriteUnaligned16 (\r
- OUT UINT16 *Buffer,\r
- IN UINT16 Value\r
- )\r
-{\r
- ASSERT (Buffer != NULL);\r
-\r
- return *Buffer = Value;\r
-}\r
-\r
-/**\r
- Reads a 24-bit value from memory that may be unaligned.\r
-\r
- This function returns the 24-bit value pointed to by Buffer. The function\r
- guarantees that the read operation does not produce an alignment fault.\r
-\r
- If the Buffer is NULL, then ASSERT().\r
-\r
- @param Buffer Pointer to a 24-bit value that may be unaligned.\r
-\r
- @return The value read.\r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-ReadUnaligned24 (\r
- IN CONST UINT32 *Buffer\r
- )\r
-{\r
- ASSERT (Buffer != NULL);\r
-\r
- return *Buffer & 0xffffff;\r
-}\r
-\r
-/**\r
- Writes a 24-bit value to memory that may be unaligned.\r
-\r
- This function writes the 24-bit value specified by Value to Buffer. Value is\r
- returned. The function guarantees that the write operation does not produce\r
- an alignment fault.\r
-\r
- If the Buffer is NULL, then ASSERT().\r
-\r
- @param Buffer Pointer to a 24-bit value that may be unaligned.\r
- @param Value 24-bit value to write to Buffer.\r
-\r
- @return The value written.\r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-WriteUnaligned24 (\r
- OUT UINT32 *Buffer,\r
- IN UINT32 Value\r
- )\r
-{\r
- ASSERT (Buffer != NULL);\r
-\r
- *Buffer = BitFieldWrite32 (*Buffer, 0, 23, Value);\r
- return Value;\r
-}\r
-\r
-/**\r
- Reads a 32-bit value from memory that may be unaligned.\r
-\r
- This function returns the 32-bit value pointed to by Buffer. The function\r
- guarantees that the read operation does not produce an alignment fault.\r
-\r
- If the Buffer is NULL, then ASSERT().\r
-\r
- @param Buffer Pointer to a 32-bit value that may be unaligned.\r
-\r
- @return *Uint32\r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-ReadUnaligned32 (\r
- IN CONST UINT32 *Buffer\r
- )\r
-{\r
- ASSERT (Buffer != NULL);\r
-\r
- return *Buffer;\r
-}\r
-\r
-/**\r
- Writes a 32-bit value to memory that may be unaligned.\r
-\r
- This function writes the 32-bit value specified by Value to Buffer. Value is\r
- returned. The function guarantees that the write operation does not produce\r
- an alignment fault.\r
-\r
- If the Buffer is NULL, then ASSERT().\r
-\r
- @param Buffer Pointer to a 32-bit value that may be unaligned.\r
- @param Value 32-bit value to write to Buffer.\r
-\r
- @return Value\r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-WriteUnaligned32 (\r
- OUT UINT32 *Buffer,\r
- IN UINT32 Value\r
- )\r
-{\r
- ASSERT (Buffer != NULL);\r
-\r
- return *Buffer = Value;\r
-}\r
-\r
-/**\r
- Reads a 64-bit value from memory that may be unaligned.\r
-\r
- This function returns the 64-bit value pointed to by Buffer. The function\r
- guarantees that the read operation does not produce an alignment fault.\r
-\r
- If the Buffer is NULL, then ASSERT().\r
-\r
- @param Buffer Pointer to a 64-bit value that may be unaligned.\r
-\r
- @return *Uint64\r
-\r
-**/\r
-UINT64\r
-EFIAPI\r
-ReadUnaligned64 (\r
- IN CONST UINT64 *Buffer\r
- )\r
-{\r
- ASSERT (Buffer != NULL);\r
-\r
- return *Buffer;\r
-}\r
-\r
-/**\r
- Writes a 64-bit value to memory that may be unaligned.\r
-\r
- This function writes the 64-bit value specified by Value to Buffer. Value is\r
- returned. The function guarantees that the write operation does not produce\r
- an alignment fault.\r
-\r
- If the Buffer is NULL, then ASSERT().\r
-\r
- @param Buffer Pointer to a 64-bit value that may be unaligned.\r
- @param Value 64-bit value to write to Buffer.\r
-\r
- @return Value\r
-\r
-**/\r
-UINT64\r
-EFIAPI\r
-WriteUnaligned64 (\r
- OUT UINT64 *Buffer,\r
- IN UINT64 Value\r
- )\r
-{\r
- ASSERT (Buffer != NULL);\r
-\r
- return *Buffer = Value;\r
-}\r
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