ScanMemGeneric.c

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#include "../MemLibInternals.h"
 
CONST VOID *
EFIAPI
InternalMemScanMem16 (
  IN      CONST VOID  *Buffer,
  IN      UINTN       Length,
  IN      UINT16      Value
  )
{
  CONST UINT16  *Pointer;
 
  Pointer = (CONST UINT16 *)Buffer;
  do {
    if (*Pointer == Value) {
      return Pointer;
    }
 
    ++Pointer;
  } while (--Length != 0);
 
  return NULL;
}
 
CONST VOID *
EFIAPI
InternalMemScanMem32 (
  IN      CONST VOID  *Buffer,
  IN      UINTN       Length,
  IN      UINT32      Value
  )
{
  CONST UINT32  *Pointer;
 
  Pointer = (CONST UINT32 *)Buffer;
  do {
    if (*Pointer == Value) {
      return Pointer;
    }
 
    ++Pointer;
  } while (--Length != 0);
 
  return NULL;
}
 
CONST VOID *
EFIAPI
InternalMemScanMem64 (
  IN      CONST VOID  *Buffer,
  IN      UINTN       Length,
  IN      UINT64      Value
  )
{
  CONST UINT64  *Pointer;
 
  Pointer = (CONST UINT64 *)Buffer;
  do {
    if (*Pointer == Value) {
      return Pointer;
    }
 
    ++Pointer;
  } while (--Length != 0);
 
  return NULL;
}
 
BOOLEAN
EFIAPI
InternalMemIsZeroBuffer (
  IN CONST VOID  *Buffer,
  IN UINTN       Length
  )
{
  CONST UINT8  *BufferData;
  UINTN        Index;
 
  BufferData = Buffer;
  for (Index = 0; Index < Length; Index++) {
    if (BufferData[Index] != 0) {
      return FALSE;
    }
  }
 
  return TRUE;
}