Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [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 | #include "src/register-configuration.h" |
| 6 | #include "src/globals.h" |
| 7 | #include "src/macro-assembler.h" |
| 8 | |
| 9 | namespace v8 { |
| 10 | namespace internal { |
| 11 | |
| 12 | namespace { |
| 13 | |
| 14 | #define REGISTER_COUNT(R) 1 + |
| 15 | static const int kMaxAllocatableGeneralRegisterCount = |
| 16 | ALLOCATABLE_GENERAL_REGISTERS(REGISTER_COUNT)0; |
| 17 | static const int kMaxAllocatableDoubleRegisterCount = |
| 18 | ALLOCATABLE_DOUBLE_REGISTERS(REGISTER_COUNT)0; |
| 19 | |
| 20 | static const int kAllocatableGeneralCodes[] = { |
| 21 | #define REGISTER_CODE(R) Register::kCode_##R, |
| 22 | ALLOCATABLE_GENERAL_REGISTERS(REGISTER_CODE)}; |
| 23 | #undef REGISTER_CODE |
| 24 | |
| 25 | static const int kAllocatableDoubleCodes[] = { |
| 26 | #define REGISTER_CODE(R) DoubleRegister::kCode_##R, |
| 27 | ALLOCATABLE_DOUBLE_REGISTERS(REGISTER_CODE)}; |
| 28 | #undef REGISTER_CODE |
| 29 | |
| 30 | static const char* const kGeneralRegisterNames[] = { |
| 31 | #define REGISTER_NAME(R) #R, |
| 32 | GENERAL_REGISTERS(REGISTER_NAME) |
| 33 | #undef REGISTER_NAME |
| 34 | }; |
| 35 | |
| 36 | static const char* const kDoubleRegisterNames[] = { |
| 37 | #define REGISTER_NAME(R) #R, |
| 38 | DOUBLE_REGISTERS(REGISTER_NAME) |
| 39 | #undef REGISTER_NAME |
| 40 | }; |
| 41 | |
| 42 | STATIC_ASSERT(RegisterConfiguration::kMaxGeneralRegisters >= |
| 43 | Register::kNumRegisters); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 44 | STATIC_ASSERT(RegisterConfiguration::kMaxFPRegisters >= |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 45 | DoubleRegister::kMaxNumRegisters); |
| 46 | |
| 47 | class ArchDefaultRegisterConfiguration : public RegisterConfiguration { |
| 48 | public: |
| 49 | explicit ArchDefaultRegisterConfiguration(CompilerSelector compiler) |
| 50 | : RegisterConfiguration(Register::kNumRegisters, |
| 51 | DoubleRegister::kMaxNumRegisters, |
| 52 | #if V8_TARGET_ARCH_IA32 |
| 53 | kMaxAllocatableGeneralRegisterCount, |
| 54 | kMaxAllocatableDoubleRegisterCount, |
| 55 | kMaxAllocatableDoubleRegisterCount, |
| 56 | #elif V8_TARGET_ARCH_X87 |
| 57 | kMaxAllocatableGeneralRegisterCount, |
| 58 | compiler == TURBOFAN |
| 59 | ? 1 |
| 60 | : kMaxAllocatableDoubleRegisterCount, |
| 61 | compiler == TURBOFAN |
| 62 | ? 1 |
| 63 | : kMaxAllocatableDoubleRegisterCount, |
| 64 | #elif V8_TARGET_ARCH_X64 |
| 65 | kMaxAllocatableGeneralRegisterCount, |
| 66 | kMaxAllocatableDoubleRegisterCount, |
| 67 | kMaxAllocatableDoubleRegisterCount, |
| 68 | #elif V8_TARGET_ARCH_ARM |
| 69 | FLAG_enable_embedded_constant_pool |
| 70 | ? (kMaxAllocatableGeneralRegisterCount - 1) |
| 71 | : kMaxAllocatableGeneralRegisterCount, |
| 72 | CpuFeatures::IsSupported(VFP32DREGS) |
| 73 | ? kMaxAllocatableDoubleRegisterCount |
| 74 | : (ALLOCATABLE_NO_VFP32_DOUBLE_REGISTERS( |
| 75 | REGISTER_COUNT)0), |
| 76 | ALLOCATABLE_NO_VFP32_DOUBLE_REGISTERS( |
| 77 | REGISTER_COUNT)0, |
| 78 | #elif V8_TARGET_ARCH_ARM64 |
| 79 | kMaxAllocatableGeneralRegisterCount, |
| 80 | kMaxAllocatableDoubleRegisterCount, |
| 81 | kMaxAllocatableDoubleRegisterCount, |
| 82 | #elif V8_TARGET_ARCH_MIPS |
| 83 | kMaxAllocatableGeneralRegisterCount, |
| 84 | kMaxAllocatableDoubleRegisterCount, |
| 85 | kMaxAllocatableDoubleRegisterCount, |
| 86 | #elif V8_TARGET_ARCH_MIPS64 |
| 87 | kMaxAllocatableGeneralRegisterCount, |
| 88 | kMaxAllocatableDoubleRegisterCount, |
| 89 | kMaxAllocatableDoubleRegisterCount, |
| 90 | #elif V8_TARGET_ARCH_PPC |
| 91 | kMaxAllocatableGeneralRegisterCount, |
| 92 | kMaxAllocatableDoubleRegisterCount, |
| 93 | kMaxAllocatableDoubleRegisterCount, |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 94 | #elif V8_TARGET_ARCH_S390 |
| 95 | kMaxAllocatableGeneralRegisterCount, |
| 96 | kMaxAllocatableDoubleRegisterCount, |
| 97 | kMaxAllocatableDoubleRegisterCount, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 98 | #else |
| 99 | #error Unsupported target architecture. |
| 100 | #endif |
| 101 | kAllocatableGeneralCodes, kAllocatableDoubleCodes, |
| 102 | kGeneralRegisterNames, kDoubleRegisterNames) { |
| 103 | } |
| 104 | }; |
| 105 | |
| 106 | |
| 107 | template <RegisterConfiguration::CompilerSelector compiler> |
| 108 | struct RegisterConfigurationInitializer { |
| 109 | static void Construct(ArchDefaultRegisterConfiguration* config) { |
| 110 | new (config) ArchDefaultRegisterConfiguration(compiler); |
| 111 | } |
| 112 | }; |
| 113 | |
| 114 | static base::LazyInstance< |
| 115 | ArchDefaultRegisterConfiguration, |
| 116 | RegisterConfigurationInitializer<RegisterConfiguration::CRANKSHAFT>>::type |
| 117 | kDefaultRegisterConfigurationForCrankshaft = LAZY_INSTANCE_INITIALIZER; |
| 118 | |
| 119 | |
| 120 | static base::LazyInstance< |
| 121 | ArchDefaultRegisterConfiguration, |
| 122 | RegisterConfigurationInitializer<RegisterConfiguration::TURBOFAN>>::type |
| 123 | kDefaultRegisterConfigurationForTurboFan = LAZY_INSTANCE_INITIALIZER; |
| 124 | |
| 125 | } // namespace |
| 126 | |
| 127 | |
| 128 | const RegisterConfiguration* RegisterConfiguration::ArchDefault( |
| 129 | CompilerSelector compiler) { |
| 130 | return compiler == TURBOFAN |
| 131 | ? &kDefaultRegisterConfigurationForTurboFan.Get() |
| 132 | : &kDefaultRegisterConfigurationForCrankshaft.Get(); |
| 133 | } |
| 134 | |
| 135 | |
| 136 | RegisterConfiguration::RegisterConfiguration( |
| 137 | int num_general_registers, int num_double_registers, |
| 138 | int num_allocatable_general_registers, int num_allocatable_double_registers, |
| 139 | int num_allocatable_aliased_double_registers, |
| 140 | const int* allocatable_general_codes, const int* allocatable_double_codes, |
| 141 | const char* const* general_register_names, |
| 142 | const char* const* double_register_names) |
| 143 | : num_general_registers_(num_general_registers), |
| 144 | num_double_registers_(num_double_registers), |
| 145 | num_allocatable_general_registers_(num_allocatable_general_registers), |
| 146 | num_allocatable_double_registers_(num_allocatable_double_registers), |
| 147 | num_allocatable_aliased_double_registers_( |
| 148 | num_allocatable_aliased_double_registers), |
| 149 | allocatable_general_codes_mask_(0), |
| 150 | allocatable_double_codes_mask_(0), |
| 151 | allocatable_general_codes_(allocatable_general_codes), |
| 152 | allocatable_double_codes_(allocatable_double_codes), |
| 153 | general_register_names_(general_register_names), |
| 154 | double_register_names_(double_register_names) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 155 | DCHECK(num_general_registers_ <= RegisterConfiguration::kMaxGeneralRegisters); |
| 156 | DCHECK(num_double_registers_ <= RegisterConfiguration::kMaxFPRegisters); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 157 | for (int i = 0; i < num_allocatable_general_registers_; ++i) { |
| 158 | allocatable_general_codes_mask_ |= (1 << allocatable_general_codes_[i]); |
| 159 | } |
| 160 | for (int i = 0; i < num_allocatable_double_registers_; ++i) { |
| 161 | allocatable_double_codes_mask_ |= (1 << allocatable_double_codes_[i]); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | #undef REGISTER_COUNT |
| 166 | |
| 167 | } // namespace internal |
| 168 | } // namespace v8 |