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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 | 5 // modification, are permitted provided that the following conditions |
6 // are met: | 6 // are 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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638 | 638 |
639 // Record a comment relocation entry that can be used by a disassembler. | 639 // Record a comment relocation entry that can be used by a disassembler. |
640 // Use --debug_code to enable. | 640 // Use --debug_code to enable. |
641 void RecordComment(const char* msg); | 641 void RecordComment(const char* msg); |
642 | 642 |
643 void RecordPosition(int pos); | 643 void RecordPosition(int pos); |
644 void RecordStatementPosition(int pos); | 644 void RecordStatementPosition(int pos); |
645 | 645 |
646 int pc_offset() const { return pc_ - buffer_; } | 646 int pc_offset() const { return pc_ - buffer_; } |
647 int last_position() const { return last_position_; } | 647 int last_position() const { return last_position_; } |
648 bool last_position_is_statement() const { | 648 int last_statement_position() const { return last_statement_position_; } |
649 return last_position_is_statement_; | |
650 } | |
651 | 649 |
652 protected: | 650 protected: |
653 int buffer_space() const { return reloc_info_writer.pos() - pc_; } | 651 int buffer_space() const { return reloc_info_writer.pos() - pc_; } |
654 | 652 |
655 // Read/patch instructions | 653 // Read/patch instructions |
656 Instr instr_at(byte* pc) { return *reinterpret_cast<Instr*>(pc); } | 654 Instr instr_at(byte* pc) { return *reinterpret_cast<Instr*>(pc); } |
657 void instr_at_put(byte* pc, Instr instr) { | 655 void instr_at_put(byte* pc, Instr instr) { |
658 *reinterpret_cast<Instr*>(pc) = instr; | 656 *reinterpret_cast<Instr*>(pc) = instr; |
659 } | 657 } |
660 Instr instr_at(int pos) { return *reinterpret_cast<Instr*>(buffer_ + pos); } | 658 Instr instr_at(int pos) { return *reinterpret_cast<Instr*>(buffer_ + pos); } |
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740 | 738 |
741 // Jump-to-jump elimination: | 739 // Jump-to-jump elimination: |
742 // The last label to be bound to _binding_pos, if unbound. | 740 // The last label to be bound to _binding_pos, if unbound. |
743 Label unbound_label_; | 741 Label unbound_label_; |
744 // The position to which _unbound_label has to be bound, if present. | 742 // The position to which _unbound_label has to be bound, if present. |
745 int binding_pos_; | 743 int binding_pos_; |
746 // The position before which jumps cannot be eliminated. | 744 // The position before which jumps cannot be eliminated. |
747 int last_bound_pos_; | 745 int last_bound_pos_; |
748 | 746 |
749 // source position information | 747 // source position information |
| 748 int last_statement_position_; |
750 int last_position_; | 749 int last_position_; |
751 bool last_position_is_statement_; | |
752 | 750 |
753 // Code emission | 751 // Code emission |
754 inline void CheckBuffer(); | 752 inline void CheckBuffer(); |
755 void GrowBuffer(); | 753 void GrowBuffer(); |
756 inline void emit(Instr x); | 754 inline void emit(Instr x); |
757 | 755 |
758 // Instruction generation | 756 // Instruction generation |
759 void addrmod1(Instr instr, Register rn, Register rd, const Operand& x); | 757 void addrmod1(Instr instr, Register rn, Register rd, const Operand& x); |
760 void addrmod2(Instr instr, Register rd, const MemOperand& x); | 758 void addrmod2(Instr instr, Register rd, const MemOperand& x); |
761 void addrmod3(Instr instr, Register rd, const MemOperand& x); | 759 void addrmod3(Instr instr, Register rd, const MemOperand& x); |
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776 | 774 |
777 // Block the emission of the constant pool before pc_offset | 775 // Block the emission of the constant pool before pc_offset |
778 void BlockConstPoolBefore(int pc_offset) { | 776 void BlockConstPoolBefore(int pc_offset) { |
779 if (no_const_pool_before_ < pc_offset) no_const_pool_before_ = pc_offset; | 777 if (no_const_pool_before_ < pc_offset) no_const_pool_before_ = pc_offset; |
780 } | 778 } |
781 }; | 779 }; |
782 | 780 |
783 } } // namespace v8::internal | 781 } } // namespace v8::internal |
784 | 782 |
785 #endif // V8_ASSEMBLER_ARM_H_ | 783 #endif // V8_ASSEMBLER_ARM_H_ |
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