getphysicaladdr.c

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 $Id: getphysicaladdr_8c-source.html 88 2016-01-12 00:11:29Z reddawg $

*****************************************************************************************/

#include <vmm/vmm.h>

uint32_t vmm_getPhysicalAddr(uInt32 pageAddr) {
  int             pageDirectoryIndex = 0x0, pageTableIndex = 0x0;
  uInt32         *pageTable = 0x0;

  //Calculate The Page Directory Index
  pageDirectoryIndex = (pageAddr >> 22);
  
  //Calculate The Page Table Index
  pageTableIndex = ((pageAddr >> 12) & 0x3FF);
  
  /* Set pageTable To The Virtual Address Of Table */
  pageTable = (uInt32 *) (tablesBaseAddress + (0x1000 * pageDirectoryIndex));
  /* Return The Physical Address Of The Page */
  return ((uInt32)(pageTable[pageTableIndex] & 0xFFFFF000));
  }

/***
 END
 ***/

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