Function ReplaceName

rEFIt_UEFI/Platform/FixBiosDsdt.cpp:1517–1548

ReplaceName(dsdt, len, "AZAL", "HDEF");

//ReplaceName(dsdt, len, "AZAL", "HDEF");
INTN ReplaceName(UINT8 *dsdt, UINT32 len, CONST CHAR8 *OldName, CONST CHAR8 *NewName)
{
  UINTN i;
  INTN  j = 0;
  for (i = 0; len >= 4 && i < len - 4; i++) {
    if ((dsdt[i+0] == NewName[0]) && (dsdt[i+1] == NewName[1]) &&
        (dsdt[i+2] == NewName[2]) && (dsdt[i+3] == NewName[3])) {
      if (OldName) {
        MsgLog("NewName %s already present, renaming impossible\n", NewName);
      } else {
		  DBG("name %s present at %llX\n", NewName, i);
      }
      return -1;
    }
  }
  if (!OldName) {
    return 0;
  }

  for (i = 0; len >= 4 && i < len - 4; i++) {
    if ((dsdt[i+0] == OldName[0]) && (dsdt[i+1] == OldName[1]) &&
        (dsdt[i+2] == OldName[2]) && (dsdt[i+3] == OldName[3])) {
		MsgLog("Name %s present at 0x%llX, renaming to %s\n", OldName, i, NewName);
      dsdt[i+0] = NewName[0];
      dsdt[i+1] = NewName[1];
      dsdt[i+2] = NewName[2];
      dsdt[i+3] = NewName[3];
      j++;
    }
  }
  return j; //number of replacement
}

//the procedure search nearest "Device" code before given address
//should restrict the search by 6 bytes... OK, 10, .. until dsdt begin