+++ /dev/null
-/** @file\r
- Architecture Independent Base Memory Library Implementation.\r
-\r
- Copyright (c) 2006, Intel Corporation<BR>\r
- All rights reserved. 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
- Module Name: MemLibGeneric.c\r
-\r
- The following BaseMemoryLib instances share the same version of this file:\r
-\r
- BaseMemoryLib\r
- PeiMemoryLib\r
- DxeMemoryLib\r
-\r
-**/\r
-\r
-#include "MemLibInternals.h"\r
-\r
-/**\r
- Fills a target buffer with a 16-bit value, and returns the target buffer.\r
-\r
- @param Buffer Pointer to the target buffer to fill.\r
- @param Length Number of bytes in Buffer to fill.\r
- @param Value Value with which to fill Length bytes of Buffer.\r
-\r
- @return Buffer\r
-\r
-**/\r
-VOID *\r
-EFIAPI\r
-InternalMemSetMem16 (\r
- OUT VOID *Buffer,\r
- IN UINTN Length,\r
- IN UINT16 Value\r
- )\r
-{\r
- do {\r
- ((UINT16*)Buffer)[--Length] = Value;\r
- } while (Length != 0);\r
- return Buffer;\r
-}\r
-\r
-/**\r
- Fills a target buffer with a 32-bit value, and returns the target buffer.\r
-\r
- @param Buffer Pointer to the target buffer to fill.\r
- @param Length Number of bytes in Buffer to fill.\r
- @param Value Value with which to fill Length bytes of Buffer.\r
-\r
- @return Buffer\r
-\r
-**/\r
-VOID *\r
-EFIAPI\r
-InternalMemSetMem32 (\r
- OUT VOID *Buffer,\r
- IN UINTN Length,\r
- IN UINT32 Value\r
- )\r
-{\r
- do {\r
- ((UINT32*)Buffer)[--Length] = Value;\r
- } while (Length != 0);\r
- return Buffer;\r
-}\r
-\r
-/**\r
- Fills a target buffer with a 64-bit value, and returns the target buffer.\r
-\r
- @param Buffer Pointer to the target buffer to fill.\r
- @param Length Number of bytes in Buffer to fill.\r
- @param Value Value with which to fill Length bytes of Buffer.\r
-\r
- @return Buffer\r
-\r
-**/\r
-VOID *\r
-EFIAPI\r
-InternalMemSetMem64 (\r
- OUT VOID *Buffer,\r
- IN UINTN Length,\r
- IN UINT64 Value\r
- )\r
-{\r
- do {\r
- ((UINT64*)Buffer)[--Length] = Value;\r
- } while (Length != 0);\r
- return Buffer;\r
-}\r
-\r
-/**\r
- Set Buffer to 0 for Size bytes.\r
-\r
- @param Buffer Memory to set.\r
- @param Size Number of bytes to set\r
-\r
- @return Buffer\r
-\r
-**/\r
-VOID *\r
-EFIAPI\r
-InternalMemZeroMem (\r
- OUT VOID *Buffer,\r
- IN UINTN Length\r
- )\r
-{\r
- return InternalMemSetMem (Buffer, Length, 0);\r
-}\r
-\r
-/**\r
- Compares two memory buffers of a given length.\r
-\r
- @param DestinationBuffer First memory buffer\r
- @param SourceBuffer Second memory buffer\r
- @param Length Length of DestinationBuffer and SourceBuffer memory\r
- regions to compare. Must be non-zero.\r
-\r
- @retval 0 if MemOne == MemTwo\r
-\r
-**/\r
-INTN\r
-EFIAPI\r
-InternalMemCompareMem (\r
- IN CONST VOID *DestinationBuffer,\r
- IN CONST VOID *SourceBuffer,\r
- IN UINTN Length\r
- )\r
-{\r
- while ((--Length != 0) &&\r
- (*(INT8*)DestinationBuffer == *(INT8*)SourceBuffer)) {\r
- DestinationBuffer = (INT8*)DestinationBuffer + 1;\r
- SourceBuffer = (INT8*)SourceBuffer + 1;\r
- }\r
- return (INTN)*(UINT8*)DestinationBuffer - (INTN)*(UINT8*)SourceBuffer;\r
-}\r
-\r
-/**\r
- Scans a target buffer for an 8-bit value, and returns a pointer to the\r
- matching 8-bit value in the target buffer.\r
-\r
- @param Buffer Pointer to the target buffer to scan.\r
- @param Length Number of bytes in Buffer to scan. Must be non-zero.\r
- @param Value Value to search for in the target buffer.\r
-\r
- @return Pointer to the first occurrence or NULL if not found.\r
-\r
-**/\r
-CONST VOID *\r
-EFIAPI\r
-InternalMemScanMem8 (\r
- IN CONST VOID *Buffer,\r
- IN UINTN Length,\r
- IN UINT8 Value\r
- )\r
-{\r
- CONST UINT8 *Pointer;\r
-\r
- Pointer = (CONST UINT8*)Buffer;\r
- do {\r
- if (*(Pointer++) == Value) {\r
- return Pointer;\r
- }\r
- } while (--Length != 0);\r
- return NULL;\r
-}\r
-\r
-/**\r
- Scans a target buffer for a 16-bit value, and returns a pointer to the\r
- matching 16-bit value in the target buffer.\r
-\r
- @param Buffer Pointer to the target buffer to scan.\r
- @param Length Number of bytes in Buffer to scan. Must be non-zero.\r
- @param Value Value to search for in the target buffer.\r
-\r
- @return Pointer to the first occurrence or NULL if not found.\r
-\r
-**/\r
-CONST VOID *\r
-EFIAPI\r
-InternalMemScanMem16 (\r
- IN CONST VOID *Buffer,\r
- IN UINTN Length,\r
- IN UINT16 Value\r
- )\r
-{\r
- CONST UINT16 *Pointer;\r
-\r
- Pointer = (CONST UINT16*)Buffer;\r
- do {\r
- if (*(Pointer++) == Value) {\r
- return Pointer;\r
- }\r
- } while (--Length != 0);\r
- return NULL;\r
-}\r
-\r
-/**\r
- Scans a target buffer for a 32-bit value, and returns a pointer to the\r
- matching 32-bit value in the target buffer.\r
-\r
- @param Buffer Pointer to the target buffer to scan.\r
- @param Length Number of bytes in Buffer to scan. Must be non-zero.\r
- @param Value Value to search for in the target buffer.\r
-\r
- @return Pointer to the first occurrence or NULL if not found.\r
-\r
-**/\r
-CONST VOID *\r
-EFIAPI\r
-InternalMemScanMem32 (\r
- IN CONST VOID *Buffer,\r
- IN UINTN Length,\r
- IN UINT32 Value\r
- )\r
-{\r
- CONST UINT32 *Pointer;\r
-\r
- Pointer = (CONST UINT32*)Buffer;\r
- do {\r
- if (*(Pointer++) == Value) {\r
- return Pointer;\r
- }\r
- } while (--Length != 0);\r
- return NULL;\r
-}\r
-\r
-/**\r
- Scans a target buffer for a 64-bit value, and returns a pointer to the\r
- matching 64-bit value in the target buffer.\r
-\r
- @param Buffer Pointer to the target buffer to scan.\r
- @param Length Number of bytes in Buffer to scan. Must be non-zero.\r
- @param Value Value to search for in the target buffer.\r
-\r
- @return Pointer to the first occurrence or NULL if not found.\r
-\r
-**/\r
-CONST VOID *\r
-EFIAPI\r
-InternalMemScanMem64 (\r
- IN CONST VOID *Buffer,\r
- IN UINTN Length,\r
- IN UINT64 Value\r
- )\r
-{\r
- CONST UINT64 *Pointer;\r
-\r
- Pointer = (CONST UINT64*)Buffer;\r
- do {\r
- if (*(Pointer++) == Value) {\r
- return Pointer;\r
- }\r
- } while (--Length != 0);\r
- return NULL;\r
-}\r
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