CryptoPkg/Library/BaseCryptLib/SysCall/BaseMemAllocation.c

   1 /** @file
   2   Base Memory Allocation Routines Wrapper for Crypto library over OpenSSL
   3   during PEI & DXE phases.
   4
   5 Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>
   6 This program and the accompanying materials
   7 are licensed and made available under the terms and conditions of the BSD License
   8 which accompanies this distribution.  The full text of the license may be found at
   9 http://opensource.org/licenses/bsd-license.php
  10
  11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #include <CrtLibSupport.h>
  17 #include <Library/MemoryAllocationLib.h>
  18
  19 //
  20 // -- Memory-Allocation Routines --
  21 //
  22
  23 /* Allocates memory blocks */
  24 void *malloc (size_t size)
  25 {
  26   return AllocatePool ((UINTN) size);
  27 }
  28
  29 /* Reallocate memory blocks */
  30 void *realloc (void *ptr, size_t size)
  31 {
  32   //
  33   // BUG: hardcode OldSize == size! We have no any knowledge about
  34   // memory size of original pointer ptr.
  35   //
  36   return ReallocatePool ((UINTN) size, (UINTN) size, ptr);
  37 }
  38
  39 /* De-allocates or frees a memory block */
  40 void free (void *ptr)
  41 {
  42   //
  43   // In Standard C, free() handles a null pointer argument transparently. This
  44   // is not true of FreePool() below, so protect it.
  45   //
  46   if (ptr != NULL) {
  47     FreePool (ptr);
  48   }
  49 }