SMem.cpp

   1 // SMem.cpp - Memory functions
   2 //
   3 // Converted from assembly to C++ by ShadowFlare.
   4 // E-mail  : blakflare@hotmail.com
   5 // Webpage : http://sfsrealm.hopto.org/
   6 // License information for this code is in license.txt
   7
   8
   9 #include "SMem.h"
  10 #include <stdlib.h>
  11
  12 LPVOID WINAPI SMemAlloc(DWORD dwSize)
  13 {
  14         LPVOID lpMemory = malloc(dwSize);
  15         if (lpMemory) SMemZero(lpMemory,dwSize);
  16         return lpMemory;
  17 }
  18
  19 void WINAPI SMemFree(LPVOID lpvMemory)
  20 {
  21         if (lpvMemory) free(lpvMemory);
  22 }
  23
  24 DWORD WINAPI SMemCopy(LPVOID lpDestination, LPCVOID lpSource, DWORD dwLength)
  25 {
  26         DWORD dwPrevLen = dwLength;
  27         LPDWORD lpdwDestination = (LPDWORD)lpDestination,lpdwSource = (LPDWORD)lpSource;
  28         LPBYTE lpbyDestination,lpbySource;
  29
  30         dwLength >>= 2;
  31
  32         while (dwLength--)
  33                 *lpdwDestination++ = *lpdwSource++;
  34
  35         lpbyDestination = (LPBYTE)lpdwDestination;
  36         lpbySource = (LPBYTE)lpdwSource;
  37
  38         dwLength = dwPrevLen;
  39         dwLength &= 3;
  40
  41         while (dwLength--)
  42                 *lpbyDestination++ = *lpbySource++;
  43
  44         return dwPrevLen;
  45 }
  46
  47 void WINAPI SMemZero(LPVOID lpDestination, DWORD dwLength)
  48 {
  49         DWORD dwPrevLen = dwLength;
  50         LPDWORD lpdwDestination = (LPDWORD)lpDestination;
  51         LPBYTE lpbyDestination;
  52
  53         dwLength >>= 2;
  54
  55         while (dwLength--)
  56                 *lpdwDestination++ = 0;
  57
  58         lpbyDestination = (LPBYTE)lpdwDestination;
  59
  60         dwLength = dwPrevLen;
  61         dwLength &= 3;
  62
  63         while (dwLength--)
  64                 *lpbyDestination++ = 0;
  65 }
  66