Updated CpuFlushCacheLine() to return the address flushed.

[mirror_edk2.git] / MdePkg / Library / BaseLib / Math64.c

/** @file\r
  Leaf math worker functions that require 64-bit arithmetic support from the\r
  compiler.\r
\r
  Copyright (c) 2006, Intel Corporation<BR>\r
  All rights reserved. This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
  Module Name:  Math64.c\r
\r
**/\r
\r
UINT64\r
EFIAPI\r
InternalMathLShiftU64 (\r
  IN      UINT64                    Operand,\r
  IN      UINTN                     Count\r
  )\r
{\r
  return Operand << Count;\r
}\r
\r
UINT64\r
EFIAPI\r
InternalMathRShiftU64 (\r
  IN      UINT64                    Operand,\r
  IN      UINTN                     Count\r
  )\r
{\r
  return Operand >> Count;\r
}\r
\r
UINT64\r
EFIAPI\r
InternalMathARShiftU64 (\r
  IN      UINT64                    Operand,\r
  IN      UINTN                     Count\r
  )\r
{\r
  //\r
  // Test if this compiler supports arithmetic shift\r
  //\r
  if ((((-1) << (sizeof (-1) * 8 - 1)) >> (sizeof (-1) * 8 - 1)) == -1) {\r
    //\r
    // Arithmetic shift is supported\r
    //\r
    return (UINT64)((INT64)Operand >> Count);\r
  }\r
\r
  //\r
  // Arithmetic is not supported\r
  //\r
  return (Operand >> Count) |\r
         ((INTN)Operand < 0 ? ~((UINTN)-1 >> Count) : 0);\r
}\r
\r
UINT64\r
EFIAPI\r
InternalMathLRotU64 (\r
  IN      UINT64                    Operand,\r
  IN      UINTN                     Count\r
  )\r
{\r
  return (Operand << Count) | (Operand >> (64 - Count));\r
}\r
\r
UINT64\r
EFIAPI\r
InternalMathRRotU64 (\r
  IN      UINT64                    Operand,\r
  IN      UINTN                     Count\r
  )\r
{\r
  return (Operand >> Count) | (Operand << (64 - Count));\r
}\r
\r
UINT64\r
EFIAPI\r
InternalMathSwapBytes64 (\r
  IN      UINT64                    Operand\r
  )\r
{\r
  return (UINT64)(\r
           ((UINT64)SwapBytes32 ((UINT32)Operand) << 32) |\r
           ((UINT64)SwapBytes32 ((UINT32)(Operand >> 32)))\r
           );\r
}\r
\r
UINT64\r
EFIAPI\r
InternalMathMultU64x32 (\r
  IN      UINT64                    Multiplicand,\r
  IN      UINT32                    Multiplier\r
  )\r
{\r
  return Multiplicand * Multiplier;\r
}\r
\r
UINT64\r
EFIAPI\r
InternalMathMultU64x64 (\r
  IN      UINT64                    Multiplicand,\r
  IN      UINT64                    Multiplier\r
  )\r
{\r
  return Multiplicand * Multiplier;\r
}\r
\r
UINT64\r
EFIAPI\r
InternalMathDivU64x32 (\r
  IN      UINT64                    Dividend,\r
  IN      UINT32                    Divisor\r
  )\r
{\r
  return Dividend / Divisor;\r
}\r
\r
UINT32\r
EFIAPI\r
InternalMathModU64x32 (\r
  IN      UINT64                    Dividend,\r
  IN      UINT32                    Divisor\r
  )\r
{\r
  return (UINT32)(Dividend % Divisor);\r
}\r
\r
UINT64\r
EFIAPI\r
InternalMathDivRemU64x32 (\r
  IN      UINT64                    Dividend,\r
  IN      UINT32                    Divisor,\r
  OUT     UINT32                    *Remainder\r
  )\r
{\r
  if (Remainder != NULL) {\r
    *Remainder = (UINT32)(Dividend % Divisor);\r
  }\r
  return Dividend / Divisor;\r
}\r
\r
UINT64\r
EFIAPI\r
InternalMathDivRemU64x64 (\r
  IN      UINT64                    Dividend,\r
  IN      UINT64                    Divisor,\r
  OUT     UINT64                    *Remainder\r
  )\r
{\r
  if (Remainder != NULL) {\r
    *Remainder = Dividend % Divisor;\r
  }\r
  return Dividend / Divisor;\r
}\r
\r
INT64\r
EFIAPI\r
InternalMathDivRemS64x64 (\r
  IN      INT64                     Dividend,\r
  IN      INT64                     Divisor,\r
  OUT     INT64                     *Remainder\r
  )\r
{\r
  if (Remainder != NULL) {\r
    *Remainder = Dividend % Divisor;\r
  }\r
  return Dividend / Divisor;\r
}\r