// Copyright 2011 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef V8_X64_CODEGEN_X64_H_ #define V8_X64_CODEGEN_X64_H_ #include "src/macro-assembler.h" namespace v8 { namespace internal { 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); }; 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() { DCHECK(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 internal } // namespace v8 #endif // V8_X64_CODEGEN_X64_H_