CSE2410 Fall 2014 Bounce

// Copyright 2011 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_X64_CODEGEN_X64_H_

#define V8_X64_CODEGEN_X64_H_

#include "ast.h"

#include "ic-inl.h"

namespace v8 {

namespace internal {

// Forward declarations

class CompilationInfo;

enum TypeofState { INSIDE_TYPEOF, NOT_INSIDE_TYPEOF };

// -------------------------------------------------------------------------

// CodeGenerator

class CodeGenerator: public AstVisitor {

 public:

  explicit CodeGenerator(Isolate* isolate) {

    InitializeAstVisitor(isolate);

  }

  static bool MakeCode(CompilationInfo* info);

  // Printing of AST, etc. as requested by flags.

  static void MakeCodePrologue(CompilationInfo* info, const char* kind);

  // Allocate and install the code.

  static Handle<Code> MakeCodeEpilogue(MacroAssembler* masm,

                                       Code::Flags flags,

                                       CompilationInfo* info);

  // Print the code after compiling it.

  static void PrintCode(Handle<Code> code, CompilationInfo* info);

  static bool ShouldGenerateLog(Isolate* isolate, Expression* type);

  static bool RecordPositions(MacroAssembler* masm,

                              int pos,

                              bool right_here = false);

  DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();

 private:

  DISALLOW_COPY_AND_ASSIGN(CodeGenerator);

};

class StringCharLoadGenerator : public AllStatic {

 public:

  // Generates the code for handling different string types and loading the

  // indexed character into |result|.  We expect |index| as untagged input and

  // |result| as untagged output.

  static void Generate(MacroAssembler* masm,

                       Register string,

                       Register index,

                       Register result,

                       Label* call_runtime);

 private:

  DISALLOW_COPY_AND_ASSIGN(StringCharLoadGenerator);

};

class MathExpGenerator : public AllStatic {

 public:

  static void EmitMathExp(MacroAssembler* masm,

                          XMMRegister input,

                          XMMRegister result,

                          XMMRegister double_scratch,

                          Register temp1,

                          Register temp2);

 private:

  DISALLOW_COPY_AND_ASSIGN(MathExpGenerator);

};

enum StackArgumentsAccessorReceiverMode {

  ARGUMENTS_CONTAIN_RECEIVER,

  ARGUMENTS_DONT_CONTAIN_RECEIVER

};

class StackArgumentsAccessor BASE_EMBEDDED {

 public:

  StackArgumentsAccessor(

      Register base_reg,

      int argument_count_immediate,

      StackArgumentsAccessorReceiverMode receiver_mode =

          ARGUMENTS_CONTAIN_RECEIVER,

      int extra_displacement_to_last_argument = 0)

      : base_reg_(base_reg),

        argument_count_reg_(no_reg),

        argument_count_immediate_(argument_count_immediate),

        receiver_mode_(receiver_mode),

        extra_displacement_to_last_argument_(

            extra_displacement_to_last_argument) { }

  StackArgumentsAccessor(

      Register base_reg,

      Register argument_count_reg,

      StackArgumentsAccessorReceiverMode receiver_mode =

          ARGUMENTS_CONTAIN_RECEIVER,

      int extra_displacement_to_last_argument = 0)

      : base_reg_(base_reg),

        argument_count_reg_(argument_count_reg),

        argument_count_immediate_(0),

        receiver_mode_(receiver_mode),

        extra_displacement_to_last_argument_(

            extra_displacement_to_last_argument) { }

  StackArgumentsAccessor(

      Register base_reg,

      const ParameterCount& parameter_count,

      StackArgumentsAccessorReceiverMode receiver_mode =

          ARGUMENTS_CONTAIN_RECEIVER,

      int extra_displacement_to_last_argument = 0)

      : base_reg_(base_reg),

        argument_count_reg_(parameter_count.is_reg() ?

                            parameter_count.reg() : no_reg),

        argument_count_immediate_(parameter_count.is_immediate() ?

                                  parameter_count.immediate() : 0),

        receiver_mode_(receiver_mode),

        extra_displacement_to_last_argument_(

            extra_displacement_to_last_argument) { }

  Operand GetArgumentOperand(int index);

  Operand GetReceiverOperand() {

    ASSERT(receiver_mode_ == ARGUMENTS_CONTAIN_RECEIVER);

    return GetArgumentOperand(0);

  }

 private:

  const Register base_reg_;

  const Register argument_count_reg_;

  const int argument_count_immediate_;

  const StackArgumentsAccessorReceiverMode receiver_mode_;

  const int extra_displacement_to_last_argument_;

  DISALLOW_IMPLICIT_CONSTRUCTORS(StackArgumentsAccessor);

};

} }  // namespace v8::internal

#endif  // V8_X64_CODEGEN_X64_H_