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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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501 uint64_t supported_; | 501 uint64_t supported_; |
502 uint64_t enabled_; | 502 uint64_t enabled_; |
503 uint64_t found_by_runtime_probing_; | 503 uint64_t found_by_runtime_probing_; |
504 | 504 |
505 friend class Isolate; | 505 friend class Isolate; |
506 | 506 |
507 DISALLOW_COPY_AND_ASSIGN(CpuFeatures); | 507 DISALLOW_COPY_AND_ASSIGN(CpuFeatures); |
508 }; | 508 }; |
509 | 509 |
510 | 510 |
511 class Assembler : public Malloced { | 511 class Assembler : public AssemblerBase { |
512 private: | 512 private: |
513 // We check before assembling an instruction that there is sufficient | 513 // We check before assembling an instruction that there is sufficient |
514 // space to write an instruction and its relocation information. | 514 // space to write an instruction and its relocation information. |
515 // The relocation writer's position must be kGap bytes above the end of | 515 // The relocation writer's position must be kGap bytes above the end of |
516 // the generated instructions. This leaves enough space for the | 516 // the generated instructions. This leaves enough space for the |
517 // longest possible ia32 instruction, 15 bytes, and the longest possible | 517 // longest possible ia32 instruction, 15 bytes, and the longest possible |
518 // relocation information encoding, RelocInfoWriter::kMaxLength == 16. | 518 // relocation information encoding, RelocInfoWriter::kMaxLength == 16. |
519 // (There is a 15 byte limit on ia32 instruction length that rules out some | 519 // (There is a 15 byte limit on ia32 instruction length that rules out some |
520 // otherwise valid instructions.) | 520 // otherwise valid instructions.) |
521 // This allows for a single, fast space check per instruction. | 521 // This allows for a single, fast space check per instruction. |
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1003 protected: | 1003 protected: |
1004 bool emit_debug_code() const { return emit_debug_code_; } | 1004 bool emit_debug_code() const { return emit_debug_code_; } |
1005 | 1005 |
1006 void movsd(XMMRegister dst, const Operand& src); | 1006 void movsd(XMMRegister dst, const Operand& src); |
1007 void movsd(const Operand& dst, XMMRegister src); | 1007 void movsd(const Operand& dst, XMMRegister src); |
1008 | 1008 |
1009 void emit_sse_operand(XMMRegister reg, const Operand& adr); | 1009 void emit_sse_operand(XMMRegister reg, const Operand& adr); |
1010 void emit_sse_operand(XMMRegister dst, XMMRegister src); | 1010 void emit_sse_operand(XMMRegister dst, XMMRegister src); |
1011 void emit_sse_operand(Register dst, XMMRegister src); | 1011 void emit_sse_operand(Register dst, XMMRegister src); |
1012 | 1012 |
1013 byte* addr_at(int pos) { return buffer_ + pos; } | 1013 byte* addr_at(int pos) { return buffer_ + pos; } |
| 1014 |
1014 private: | 1015 private: |
1015 byte byte_at(int pos) { return buffer_[pos]; } | 1016 byte byte_at(int pos) { return buffer_[pos]; } |
1016 void set_byte_at(int pos, byte value) { buffer_[pos] = value; } | 1017 void set_byte_at(int pos, byte value) { buffer_[pos] = value; } |
1017 uint32_t long_at(int pos) { | 1018 uint32_t long_at(int pos) { |
1018 return *reinterpret_cast<uint32_t*>(addr_at(pos)); | 1019 return *reinterpret_cast<uint32_t*>(addr_at(pos)); |
1019 } | 1020 } |
1020 void long_at_put(int pos, uint32_t x) { | 1021 void long_at_put(int pos, uint32_t x) { |
1021 *reinterpret_cast<uint32_t*>(addr_at(pos)) = x; | 1022 *reinterpret_cast<uint32_t*>(addr_at(pos)) = x; |
1022 } | 1023 } |
1023 | 1024 |
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1105 private: | 1106 private: |
1106 Assembler* assembler_; | 1107 Assembler* assembler_; |
1107 #ifdef DEBUG | 1108 #ifdef DEBUG |
1108 int space_before_; | 1109 int space_before_; |
1109 #endif | 1110 #endif |
1110 }; | 1111 }; |
1111 | 1112 |
1112 } } // namespace v8::internal | 1113 } } // namespace v8::internal |
1113 | 1114 |
1114 #endif // V8_IA32_ASSEMBLER_IA32_H_ | 1115 #endif // V8_IA32_ASSEMBLER_IA32_H_ |
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