| // 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_ |