OldMdePkg/Library/BaseMemoryLibRepStr/MemLibInternals.h

   1 /** @file
   2   Declaration of internal functions for Base Memory Library.
   3
   4   Copyright (c) 2006, Intel Corporation<BR>
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13   Module Name:  MemLibInternals.h
  14
  15   The following BaseMemoryLib instances share the same version of this file:
  16
  17     BaseMemoryLib
  18     BaseMemoryLibMmx
  19     BaseMemoryLibSse2
  20     BaseMemoryLibRepStr
  21     PeiMemoryLib
  22     DxeMemoryLib
  23
  24 **/
  25
  26 #ifndef __MEM_LIB_INTERNALS__
  27 #define __MEM_LIB_INTERNALS__
  28
  29 /**
  30   Copy Length bytes from Source to Destination.
  31
  32   @param  Destination Target of copy
  33   @param  Source Place to copy from
  34   @param  Length Number of bytes to copy
  35
  36   @return Destination
  37
  38 **/
  39 VOID *
  40 EFIAPI
  41 InternalMemCopyMem (
  42   OUT     VOID                      *DestinationBuffer,
  43   IN      CONST VOID                *SourceBuffer,
  44   IN      UINTN                     Length
  45   );
  46
  47 /**
  48   Set Buffer to Value for Size bytes.
  49
  50   @param  Buffer Memory to set.
  51   @param  Size Number of bytes to set
  52   @param  Value Value of the set operation.
  53
  54   @return Buffer
  55
  56 **/
  57 VOID *
  58 EFIAPI
  59 InternalMemSetMem (
  60   OUT     VOID                      *Buffer,
  61   IN      UINTN                     Length,
  62   IN      UINT8                     Value
  63   );
  64
  65 /**
  66   Fills a target buffer with a 16-bit value, and returns the target buffer.
  67
  68   @param  Buffer  Pointer to the target buffer to fill.
  69   @param  Length  Number of bytes in Buffer to fill.
  70   @param  Value   Value with which to fill Length bytes of Buffer.
  71
  72   @return Buffer
  73
  74 **/
  75 VOID *
  76 EFIAPI
  77 InternalMemSetMem16 (
  78   OUT     VOID                      *Buffer,
  79   IN      UINTN                     Length,
  80   IN      UINT16                    Value
  81   );
  82
  83 /**
  84   Fills a target buffer with a 32-bit value, and returns the target buffer.
  85
  86   @param  Buffer  Pointer to the target buffer to fill.
  87   @param  Length  Number of bytes in Buffer to fill.
  88   @param  Value   Value with which to fill Length bytes of Buffer.
  89
  90   @return Buffer
  91
  92 **/
  93 VOID *
  94 EFIAPI
  95 InternalMemSetMem32 (
  96   OUT     VOID                      *Buffer,
  97   IN      UINTN                     Length,
  98   IN      UINT32                    Value
  99   );
 100
 101 /**
 102   Fills a target buffer with a 64-bit value, and returns the target buffer.
 103
 104   @param  Buffer  Pointer to the target buffer to fill.
 105   @param  Length  Number of bytes in Buffer to fill.
 106   @param  Value   Value with which to fill Length bytes of Buffer.
 107
 108   @return Buffer
 109
 110 **/
 111 VOID *
 112 EFIAPI
 113 InternalMemSetMem64 (
 114   OUT     VOID                      *Buffer,
 115   IN      UINTN                     Length,
 116   IN      UINT64                    Value
 117   );
 118
 119 /**
 120   Set Buffer to 0 for Size bytes.
 121
 122   @param  Buffer Memory to set.
 123   @param  Size Number of bytes to set
 124
 125   @return Buffer
 126
 127 **/
 128 VOID *
 129 EFIAPI
 130 InternalMemZeroMem (
 131   OUT     VOID                      *Buffer,
 132   IN      UINTN                     Length
 133   );
 134
 135 /**
 136   Compares two memory buffers of a given length.
 137
 138   @param  DestinationBuffer First memory buffer
 139   @param  SourceBuffer      Second memory buffer
 140   @param  Length            Length of DestinationBuffer and SourceBuffer memory
 141                             regions to compare. Must be non-zero.
 142
 143   @retval 0     if MemOne == MemTwo
 144
 145 **/
 146 INTN
 147 EFIAPI
 148 InternalMemCompareMem (
 149   IN      CONST VOID                *DestinationBuffer,
 150   IN      CONST VOID                *SourceBuffer,
 151   IN      UINTN                     Length
 152   );
 153
 154 /**
 155   Scans a target buffer for an 8-bit value, and returns a pointer to the
 156   matching 8-bit value in the target buffer.
 157
 158   @param  Buffer  Pointer to the target buffer to scan.
 159   @param  Length  Number of bytes in Buffer to scan. Must be non-zero.
 160   @param  Value   Value to search for in the target buffer.
 161
 162   @return Pointer to the first occurrence or NULL if not found.
 163
 164 **/
 165 CONST VOID *
 166 EFIAPI
 167 InternalMemScanMem8 (
 168   IN      CONST VOID                *Buffer,
 169   IN      UINTN                     Length,
 170   IN      UINT8                     Value
 171   );
 172
 173 /**
 174   Scans a target buffer for a 16-bit value, and returns a pointer to the
 175   matching 16-bit value in the target buffer.
 176
 177   @param  Buffer  Pointer to the target buffer to scan.
 178   @param  Length  Number of bytes in Buffer to scan. Must be non-zero.
 179   @param  Value   Value to search for in the target buffer.
 180
 181   @return Pointer to the first occurrence or NULL if not found.
 182
 183 **/
 184 CONST VOID *
 185 EFIAPI
 186 InternalMemScanMem16 (
 187   IN      CONST VOID                *Buffer,
 188   IN      UINTN                     Length,
 189   IN      UINT16                    Value
 190   );
 191
 192 /**
 193   Scans a target buffer for a 32-bit value, and returns a pointer to the
 194   matching 32-bit value in the target buffer.
 195
 196   @param  Buffer  Pointer to the target buffer to scan.
 197   @param  Length  Number of bytes in Buffer to scan. Must be non-zero.
 198   @param  Value   Value to search for in the target buffer.
 199
 200   @return Pointer to the first occurrence or NULL if not found.
 201
 202 **/
 203 CONST VOID *
 204 EFIAPI
 205 InternalMemScanMem32 (
 206   IN      CONST VOID                *Buffer,
 207   IN      UINTN                     Length,
 208   IN      UINT32                    Value
 209   );
 210
 211 /**
 212   Scans a target buffer for a 64-bit value, and returns a pointer to the
 213   matching 64-bit value in the target buffer.
 214
 215   @param  Buffer  Pointer to the target buffer to scan.
 216   @param  Length  Number of bytes in Buffer to scan. Must be non-zero.
 217   @param  Value   Value to search for in the target buffer.
 218
 219   @return Pointer to the first occurrence or NULL if not found.
 220
 221 **/
 222 CONST VOID *
 223 EFIAPI
 224 InternalMemScanMem64 (
 225   IN      CONST VOID                *Buffer,
 226   IN      UINTN                     Length,
 227   IN      UINT64                    Value
 228   );
 229
 230 #endif