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| 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
| 2 // All Rights Reserved. | 2 // All Rights Reserved. |
| 3 // | 3 // |
| 4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
| 5 // modification, are permitted provided that the following conditions are | 5 // modification, are permitted provided that the following conditions are |
| 6 // met: | 6 // met: |
| 7 // | 7 // |
| 8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
| 9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
| 10 // | 10 // |
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| 111 | 111 |
| 112 static const int kNumRegisters = Code::kAfterLast; | 112 static const int kNumRegisters = Code::kAfterLast; |
| 113 | 113 |
| 114 static Register from_code(int code) { | 114 static Register from_code(int code) { |
| 115 DCHECK(code >= 0); | 115 DCHECK(code >= 0); |
| 116 DCHECK(code < kNumRegisters); | 116 DCHECK(code < kNumRegisters); |
| 117 Register r = {code}; | 117 Register r = {code}; |
| 118 return r; | 118 return r; |
| 119 } | 119 } |
| 120 const char* ToString(); | 120 const char* ToString(); |
| 121 bool IsAllocatable() const; | 121 bool IsAllocatable(RegisterConfiguration::CompilerSelector compiler = |
| 122 RegisterConfiguration::CRANKSHAFT) const; |
| 122 bool is_valid() const { return 0 <= reg_code && reg_code < kNumRegisters; } | 123 bool is_valid() const { return 0 <= reg_code && reg_code < kNumRegisters; } |
| 123 bool is(Register reg) const { return reg_code == reg.reg_code; } | 124 bool is(Register reg) const { return reg_code == reg.reg_code; } |
| 124 int code() const { | 125 int code() const { |
| 125 DCHECK(is_valid()); | 126 DCHECK(is_valid()); |
| 126 return reg_code; | 127 return reg_code; |
| 127 } | 128 } |
| 128 int bit() const { | 129 int bit() const { |
| 129 DCHECK(is_valid()); | 130 DCHECK(is_valid()); |
| 130 return 1 << reg_code; | 131 return 1 << reg_code; |
| 131 } | 132 } |
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| 212 }; | 213 }; |
| 213 | 214 |
| 214 static const int kMaxNumRegisters = Code::kAfterLast; | 215 static const int kMaxNumRegisters = Code::kAfterLast; |
| 215 | 216 |
| 216 static XMMRegister from_code(int code) { | 217 static XMMRegister from_code(int code) { |
| 217 XMMRegister result = {code}; | 218 XMMRegister result = {code}; |
| 218 return result; | 219 return result; |
| 219 } | 220 } |
| 220 | 221 |
| 221 const char* ToString(); | 222 const char* ToString(); |
| 222 bool IsAllocatable() const; | 223 bool IsAllocatable(RegisterConfiguration::CompilerSelector compiler = |
| 224 RegisterConfiguration::CRANKSHAFT) const; |
| 223 bool is_valid() const { return 0 <= reg_code && reg_code < kMaxNumRegisters; } | 225 bool is_valid() const { return 0 <= reg_code && reg_code < kMaxNumRegisters; } |
| 224 bool is(XMMRegister reg) const { return reg_code == reg.reg_code; } | 226 bool is(XMMRegister reg) const { return reg_code == reg.reg_code; } |
| 225 int code() const { | 227 int code() const { |
| 226 DCHECK(is_valid()); | 228 DCHECK(is_valid()); |
| 227 return reg_code; | 229 return reg_code; |
| 228 } | 230 } |
| 229 | 231 |
| 230 // Return the high bit of the register code as a 0 or 1. Used often | 232 // Return the high bit of the register code as a 0 or 1. Used often |
| 231 // when constructing the REX prefix byte. | 233 // when constructing the REX prefix byte. |
| 232 int high_bit() const { return reg_code >> 3; } | 234 int high_bit() const { return reg_code >> 3; } |
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| 2279 Assembler* assembler_; | 2281 Assembler* assembler_; |
| 2280 #ifdef DEBUG | 2282 #ifdef DEBUG |
| 2281 int space_before_; | 2283 int space_before_; |
| 2282 #endif | 2284 #endif |
| 2283 }; | 2285 }; |
| 2284 | 2286 |
| 2285 } // namespace internal | 2287 } // namespace internal |
| 2286 } // namespace v8 | 2288 } // namespace v8 |
| 2287 | 2289 |
| 2288 #endif // V8_X64_ASSEMBLER_X64_H_ | 2290 #endif // V8_X64_ASSEMBLER_X64_H_ |
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