Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_COMPILER_REGISTER_CONFIGURATION_H_ |
| 6 | #define V8_COMPILER_REGISTER_CONFIGURATION_H_ |
| 7 | |
| 8 | #include "src/v8.h" |
| 9 | |
| 10 | namespace v8 { |
| 11 | namespace internal { |
| 12 | namespace compiler { |
| 13 | |
| 14 | // An architecture independent representation of the sets of registers available |
| 15 | // for instruction creation. |
| 16 | class RegisterConfiguration { |
| 17 | public: |
| 18 | // Architecture independent maxes. |
| 19 | static const int kMaxGeneralRegisters = 32; |
| 20 | static const int kMaxDoubleRegisters = 32; |
| 21 | |
| 22 | static const RegisterConfiguration* ArchDefault(); |
| 23 | |
| 24 | RegisterConfiguration(int num_general_registers, int num_double_registers, |
| 25 | int num_aliased_double_registers, |
| 26 | const char* const* general_register_name, |
| 27 | const char* const* double_register_name); |
| 28 | |
| 29 | int num_general_registers() const { return num_general_registers_; } |
| 30 | int num_double_registers() const { return num_double_registers_; } |
| 31 | int num_aliased_double_registers() const { |
| 32 | return num_aliased_double_registers_; |
| 33 | } |
| 34 | |
| 35 | const char* general_register_name(int offset) const { |
| 36 | DCHECK(offset >= 0 && offset < kMaxGeneralRegisters); |
| 37 | return general_register_names_[offset]; |
| 38 | } |
| 39 | const char* double_register_name(int offset) const { |
| 40 | DCHECK(offset >= 0 && offset < kMaxDoubleRegisters); |
| 41 | return double_register_names_[offset]; |
| 42 | } |
| 43 | |
| 44 | private: |
| 45 | const int num_general_registers_; |
| 46 | const int num_double_registers_; |
| 47 | const int num_aliased_double_registers_; |
| 48 | const char* const* general_register_names_; |
| 49 | const char* const* double_register_names_; |
| 50 | }; |
| 51 | |
| 52 | } // namespace compiler |
| 53 | } // namespace internal |
| 54 | } // namespace v8 |
| 55 | |
| 56 | #endif // V8_COMPILER_REGISTER_CONFIGURATION_H_ |