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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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741 // Note: The same Label can be used for forward and backward branches | 741 // Note: The same Label can be used for forward and backward branches |
742 // but it may be bound only once. | 742 // but it may be bound only once. |
743 | 743 |
744 void bind(Label* L); // binds an unbound label L to the current code position | 744 void bind(Label* L); // binds an unbound label L to the current code position |
745 | 745 |
746 // Returns the branch offset to the given label from the current code position | 746 // Returns the branch offset to the given label from the current code position |
747 // Links the label to the current position if it is still unbound | 747 // Links the label to the current position if it is still unbound |
748 // Manages the jump elimination optimization if the second parameter is true. | 748 // Manages the jump elimination optimization if the second parameter is true. |
749 int branch_offset(Label* L, bool jump_elimination_allowed); | 749 int branch_offset(Label* L, bool jump_elimination_allowed); |
750 | 750 |
751 // Puts a labels target address at the given position. | |
752 // The high 8 bits are set to zero. | |
753 void label_at_put(Label* L, int at_offset); | |
754 | |
755 // Return the address in the constant pool of the code target address used by | 751 // Return the address in the constant pool of the code target address used by |
756 // the branch/call instruction at pc, or the object in a mov. | 752 // the branch/call instruction at pc, or the object in a mov. |
757 INLINE(static Address target_pointer_address_at(Address pc)); | 753 INLINE(static Address target_pointer_address_at(Address pc)); |
758 | 754 |
759 // Read/Modify the pointer in the branch/call/move instruction at pc. | 755 // Read/Modify the pointer in the branch/call/move instruction at pc. |
760 INLINE(static Address target_pointer_at(Address pc)); | 756 INLINE(static Address target_pointer_at(Address pc)); |
761 INLINE(static void set_target_pointer_at(Address pc, Address target)); | 757 INLINE(static void set_target_pointer_at(Address pc, Address target)); |
762 | 758 |
763 // Read/Modify the code target address in the branch/call instruction at pc. | 759 // Read/Modify the code target address in the branch/call instruction at pc. |
764 INLINE(static Address target_address_at(Address pc)); | 760 INLINE(static Address target_address_at(Address pc)); |
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896 SBit s = LeaveCC, Condition cond = al) { | 892 SBit s = LeaveCC, Condition cond = al) { |
897 orr(dst, src1, Operand(src2), s, cond); | 893 orr(dst, src1, Operand(src2), s, cond); |
898 } | 894 } |
899 | 895 |
900 void mov(Register dst, const Operand& src, | 896 void mov(Register dst, const Operand& src, |
901 SBit s = LeaveCC, Condition cond = al); | 897 SBit s = LeaveCC, Condition cond = al); |
902 void mov(Register dst, Register src, SBit s = LeaveCC, Condition cond = al) { | 898 void mov(Register dst, Register src, SBit s = LeaveCC, Condition cond = al) { |
903 mov(dst, Operand(src), s, cond); | 899 mov(dst, Operand(src), s, cond); |
904 } | 900 } |
905 | 901 |
| 902 // Load the position of the label relative to the generated code object |
| 903 // pointer in a register. |
| 904 void mov_label_offset(Register dst, Label* label); |
| 905 |
906 // ARMv7 instructions for loading a 32 bit immediate in two instructions. | 906 // ARMv7 instructions for loading a 32 bit immediate in two instructions. |
907 // This may actually emit a different mov instruction, but on an ARMv7 it | 907 // This may actually emit a different mov instruction, but on an ARMv7 it |
908 // is guaranteed to only emit one instruction. | 908 // is guaranteed to only emit one instruction. |
909 void movw(Register reg, uint32_t immediate, Condition cond = al); | 909 void movw(Register reg, uint32_t immediate, Condition cond = al); |
910 // The constant for movt should be in the range 0-0xffff. | 910 // The constant for movt should be in the range 0-0xffff. |
911 void movt(Register reg, uint32_t immediate, Condition cond = al); | 911 void movt(Register reg, uint32_t immediate, Condition cond = al); |
912 | 912 |
913 void bic(Register dst, Register src1, const Operand& src2, | 913 void bic(Register dst, Register src1, const Operand& src2, |
914 SBit s = LeaveCC, Condition cond = al); | 914 SBit s = LeaveCC, Condition cond = al); |
915 | 915 |
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1554 USE_CONSTANT_POOL, | 1554 USE_CONSTANT_POOL, |
1555 DONT_USE_CONSTANT_POOL | 1555 DONT_USE_CONSTANT_POOL |
1556 }; | 1556 }; |
1557 | 1557 |
1558 // Record reloc info for current pc_ | 1558 // Record reloc info for current pc_ |
1559 void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0, | 1559 void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0, |
1560 UseConstantPoolMode mode = USE_CONSTANT_POOL); | 1560 UseConstantPoolMode mode = USE_CONSTANT_POOL); |
1561 void RecordRelocInfo(double data); | 1561 void RecordRelocInfo(double data); |
1562 void RecordRelocInfoConstantPoolEntryHelper(const RelocInfo& rinfo); | 1562 void RecordRelocInfoConstantPoolEntryHelper(const RelocInfo& rinfo); |
1563 | 1563 |
1564 friend class RegExpMacroAssemblerARM; | |
1565 friend class RelocInfo; | 1564 friend class RelocInfo; |
1566 friend class CodePatcher; | 1565 friend class CodePatcher; |
1567 friend class BlockConstPoolScope; | 1566 friend class BlockConstPoolScope; |
1568 | 1567 |
1569 PositionsRecorder positions_recorder_; | 1568 PositionsRecorder positions_recorder_; |
1570 friend class PositionsRecorder; | 1569 friend class PositionsRecorder; |
1571 friend class EnsureSpace; | 1570 friend class EnsureSpace; |
1572 }; | 1571 }; |
1573 | 1572 |
1574 | 1573 |
1575 class EnsureSpace BASE_EMBEDDED { | 1574 class EnsureSpace BASE_EMBEDDED { |
1576 public: | 1575 public: |
1577 explicit EnsureSpace(Assembler* assembler) { | 1576 explicit EnsureSpace(Assembler* assembler) { |
1578 assembler->CheckBuffer(); | 1577 assembler->CheckBuffer(); |
1579 } | 1578 } |
1580 }; | 1579 }; |
1581 | 1580 |
1582 | 1581 |
1583 } } // namespace v8::internal | 1582 } } // namespace v8::internal |
1584 | 1583 |
1585 #endif // V8_ARM_ASSEMBLER_ARM_H_ | 1584 #endif // V8_ARM_ASSEMBLER_ARM_H_ |
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