Rename A64 port to ARM64 port

src/a64/utils-a64.h

-// Copyright 2013 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef V8_A64_UTILS_A64_H_
-#define V8_A64_UTILS_A64_H_
-
-#include <cmath>
-#include "v8.h"
-#include "a64/constants-a64.h"
-
-#define REGISTER_CODE_LIST(R)                                                  \
-R(0)  R(1)  R(2)  R(3)  R(4)  R(5)  R(6)  R(7)                                 \
-R(8)  R(9)  R(10) R(11) R(12) R(13) R(14) R(15)                                \
-R(16) R(17) R(18) R(19) R(20) R(21) R(22) R(23)                                \
-R(24) R(25) R(26) R(27) R(28) R(29) R(30) R(31)
-
-namespace v8 {
-namespace internal {
-
-// These are global assumptions in v8.
-STATIC_ASSERT((static_cast<int32_t>(-1) >> 1) == -1);
-STATIC_ASSERT((static_cast<uint32_t>(-1) >> 1) == 0x7FFFFFFF);
-
-// Floating point representation.
-static inline uint32_t float_to_rawbits(float value) {
-  uint32_t bits = 0;
-  memcpy(&bits, &value, 4);
-  return bits;
-}
-
-
-static inline uint64_t double_to_rawbits(double value) {
-  uint64_t bits = 0;
-  memcpy(&bits, &value, 8);
-  return bits;
-}
-
-
-static inline float rawbits_to_float(uint32_t bits) {
-  float value = 0.0;
-  memcpy(&value, &bits, 4);
-  return value;
-}
-
-
-static inline double rawbits_to_double(uint64_t bits) {
-  double value = 0.0;
-  memcpy(&value, &bits, 8);
-  return value;
-}
-
-
-// Bit counting.
-int CountLeadingZeros(uint64_t value, int width);
-int CountLeadingSignBits(int64_t value, int width);
-int CountTrailingZeros(uint64_t value, int width);
-int CountSetBits(uint64_t value, int width);
-int MaskToBit(uint64_t mask);
-
-
-// NaN tests.
-inline bool IsSignallingNaN(double num) {
-  uint64_t raw = double_to_rawbits(num);
-  if (std::isnan(num) && ((raw & kDQuietNanMask) == 0)) {
-    return true;
-  }
-  return false;
-}
-
-
-inline bool IsSignallingNaN(float num) {
-  uint32_t raw = float_to_rawbits(num);
-  if (std::isnan(num) && ((raw & kSQuietNanMask) == 0)) {
-    return true;
-  }
-  return false;
-}
-
-
-template <typename T>
-inline bool IsQuietNaN(T num) {
-  return std::isnan(num) && !IsSignallingNaN(num);
-}
-
-
-// Convert the NaN in 'num' to a quiet NaN.
-inline double ToQuietNaN(double num) {
-  ASSERT(isnan(num));
-  return rawbits_to_double(double_to_rawbits(num) | kDQuietNanMask);
-}
-
-
-inline float ToQuietNaN(float num) {
-  ASSERT(isnan(num));
-  return rawbits_to_float(float_to_rawbits(num) | kSQuietNanMask);
-}
-
-
-// Fused multiply-add.
-inline double FusedMultiplyAdd(double op1, double op2, double a) {
-  return fma(op1, op2, a);
-}
-
-
-inline float FusedMultiplyAdd(float op1, float op2, float a) {
-  return fmaf(op1, op2, a);
-}
-
-} }  // namespace v8::internal
-
-#endif  // V8_A64_UTILS_A64_H_