Upstream version 7.36.149.0

[platform/framework/web/crosswalk.git] / src / v8 / src / arm64 / instructions-arm64.h

diff --git a/src/v8/src/arm64/instructions-arm64.h b/src/v8/src/arm64/instructions-arm64.h
index ab64cb2..968ddac 100644 (file)
--- a/src/v8/src/arm64/instructions-arm64.h
+++ b/src/v8/src/arm64/instructions-arm64.h
@@ -1,29 +1,6 @@
 // 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.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
 
 #ifndef V8_ARM64_INSTRUCTIONS_ARM64_H_
 #define V8_ARM64_INSTRUCTIONS_ARM64_H_
@@ -160,9 +137,10 @@ class Instruction {
   // ImmPCRel is a compound field (not present in INSTRUCTION_FIELDS_LIST),
   // formed from ImmPCRelLo and ImmPCRelHi.
   int ImmPCRel() const {
+    ASSERT(IsPCRelAddressing());
     int const offset = ((ImmPCRelHi() << ImmPCRelLo_width) | ImmPCRelLo());
     int const width = ImmPCRelLo_width + ImmPCRelHi_width;
-    return signed_bitextract_32(width-1, 0, offset);
+    return signed_bitextract_32(width - 1, 0, offset);
   }
 
   uint64_t ImmLogical();
@@ -191,6 +169,10 @@ class Instruction {
     return Mask(TestBranchFMask) == TestBranchFixed;
   }
 
+  bool IsImmBranch() const {
+    return BranchType() != UnknownBranchType;
+  }
+
   bool IsLdrLiteral() const {
     return Mask(LoadLiteralFMask) == LoadLiteralFixed;
   }
@@ -203,6 +185,10 @@ class Instruction {
     return Mask(PCRelAddressingFMask) == PCRelAddressingFixed;
   }
 
+  bool IsAdr() const {
+    return Mask(PCRelAddressingMask) == ADR;
+  }
+
   bool IsLogicalImmediate() const {
     return Mask(LogicalImmediateFMask) == LogicalImmediateFixed;
   }
@@ -211,6 +197,10 @@ class Instruction {
     return Mask(AddSubImmediateFMask) == AddSubImmediateFixed;
   }
 
+  bool IsAddSubShifted() const {
+    return Mask(AddSubShiftedFMask) == AddSubShiftedFixed;
+  }
+
   bool IsAddSubExtended() const {
     return Mask(AddSubExtendedFMask) == AddSubExtendedFixed;
   }
@@ -387,6 +377,10 @@ class Instruction {
   }
 
 
+  static const int ImmPCRelRangeBitwidth = 21;
+  static bool IsValidPCRelOffset(int offset) {
+    return is_int21(offset);
+  }
   void SetPCRelImmTarget(Instruction* target);
   void SetBranchImmTarget(Instruction* target);
 };