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Side by Side Diff: src/arm/assembler-arm.h

Issue 317653003: [Arm] Various cleanups to the Arm assembler backend. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 6 months ago
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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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665 // TODO(rmcilroy): This should ideally be a ZoneList, however that would mean 665 // TODO(rmcilroy): This should ideally be a ZoneList, however that would mean
666 // RelocInfo would need to subclass ZoneObject which it currently doesn't. 666 // RelocInfo would need to subclass ZoneObject which it currently doesn't.
667 std::vector<RelocInfo> entries_; 667 std::vector<RelocInfo> entries_;
668 std::vector<int> merged_indexes_; 668 std::vector<int> merged_indexes_;
669 int count_of_64bit_; 669 int count_of_64bit_;
670 int count_of_code_ptr_; 670 int count_of_code_ptr_;
671 int count_of_heap_ptr_; 671 int count_of_heap_ptr_;
672 int count_of_32bit_; 672 int count_of_32bit_;
673 }; 673 };
674 674
675
676 extern const Instr kMovLrPc;
677 extern const Instr kLdrPCMask;
678 extern const Instr kLdrPCPattern;
679 extern const Instr kLdrPpMask;
680 extern const Instr kLdrPpPattern;
681 extern const Instr kBlxRegMask;
682 extern const Instr kBlxRegPattern;
683 extern const Instr kBlxIp;
684
685 extern const Instr kMovMvnMask;
686 extern const Instr kMovMvnPattern;
687 extern const Instr kMovMvnFlip;
688
689 extern const Instr kMovLeaveCCMask;
690 extern const Instr kMovLeaveCCPattern;
691 extern const Instr kMovwMask;
692 extern const Instr kMovwPattern;
693 extern const Instr kMovwLeaveCCFlip;
694
695 extern const Instr kCmpCmnMask;
696 extern const Instr kCmpCmnPattern;
697 extern const Instr kCmpCmnFlip;
698 extern const Instr kAddSubFlip;
699 extern const Instr kAndBicFlip;
700
701 struct VmovIndex { 675 struct VmovIndex {
702 unsigned char index; 676 unsigned char index;
703 }; 677 };
704 const VmovIndex VmovIndexLo = { 0 }; 678 const VmovIndex VmovIndexLo = { 0 };
705 const VmovIndex VmovIndexHi = { 1 }; 679 const VmovIndex VmovIndexHi = { 1 };
706 680
707 class Assembler : public AssemblerBase { 681 class Assembler : public AssemblerBase {
708 public: 682 public:
709 // Create an assembler. Instructions and relocation information are emitted 683 // Create an assembler. Instructions and relocation information are emitted
710 // into a buffer, with the instructions starting from the beginning and the 684 // into a buffer, with the instructions starting from the beginning and the
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744 718
745 void bind(Label* L); // binds an unbound label L to the current code position 719 void bind(Label* L); // binds an unbound label L to the current code position
746 720
747 // Returns the branch offset to the given label from the current code position 721 // Returns the branch offset to the given label from the current code position
748 // Links the label to the current position if it is still unbound 722 // Links the label to the current position if it is still unbound
749 // Manages the jump elimination optimization if the second parameter is true. 723 // Manages the jump elimination optimization if the second parameter is true.
750 int branch_offset(Label* L, bool jump_elimination_allowed); 724 int branch_offset(Label* L, bool jump_elimination_allowed);
751 725
752 // Return the address in the constant pool of the code target address used by 726 // Return the address in the constant pool of the code target address used by
753 // the branch/call instruction at pc, or the object in a mov. 727 // the branch/call instruction at pc, or the object in a mov.
754 INLINE(static Address target_pointer_address_at(Address pc)); 728 INLINE(static Address constant_pool_entry_address(
755
756 // Return the address in the constant pool of the code target address used by
757 // the branch/call instruction at pc, or the object in a mov.
758 INLINE(static Address target_constant_pool_address_at(
759 Address pc, ConstantPoolArray* constant_pool)); 729 Address pc, ConstantPoolArray* constant_pool));
760 730
761 // Read/Modify the code target address in the branch/call instruction at pc. 731 // Read/Modify the code target address in the branch/call instruction at pc.
762 INLINE(static Address target_address_at(Address pc, 732 INLINE(static Address target_address_at(Address pc,
763 ConstantPoolArray* constant_pool)); 733 ConstantPoolArray* constant_pool));
764 INLINE(static void set_target_address_at(Address pc, 734 INLINE(static void set_target_address_at(Address pc,
765 ConstantPoolArray* constant_pool, 735 ConstantPoolArray* constant_pool,
766 Address target, 736 Address target,
767 ICacheFlushMode icache_flush_mode = 737 ICacheFlushMode icache_flush_mode =
768 FLUSH_ICACHE_IF_NEEDED)); 738 FLUSH_ICACHE_IF_NEEDED));
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1383 } 1353 }
1384 static Instr instr_at(byte* pc) { return *reinterpret_cast<Instr*>(pc); } 1354 static Instr instr_at(byte* pc) { return *reinterpret_cast<Instr*>(pc); }
1385 static void instr_at_put(byte* pc, Instr instr) { 1355 static void instr_at_put(byte* pc, Instr instr) {
1386 *reinterpret_cast<Instr*>(pc) = instr; 1356 *reinterpret_cast<Instr*>(pc) = instr;
1387 } 1357 }
1388 static Condition GetCondition(Instr instr); 1358 static Condition GetCondition(Instr instr);
1389 static bool IsBranch(Instr instr); 1359 static bool IsBranch(Instr instr);
1390 static int GetBranchOffset(Instr instr); 1360 static int GetBranchOffset(Instr instr);
1391 static bool IsLdrRegisterImmediate(Instr instr); 1361 static bool IsLdrRegisterImmediate(Instr instr);
1392 static bool IsVldrDRegisterImmediate(Instr instr); 1362 static bool IsVldrDRegisterImmediate(Instr instr);
1363 static Instr GetConsantPoolLoadPattern();
1393 static bool IsLdrPpImmediateOffset(Instr instr); 1364 static bool IsLdrPpImmediateOffset(Instr instr);
1394 static bool IsVldrDPpImmediateOffset(Instr instr); 1365 static bool IsVldrDPpImmediateOffset(Instr instr);
1395 static int GetLdrRegisterImmediateOffset(Instr instr); 1366 static int GetLdrRegisterImmediateOffset(Instr instr);
1396 static int GetVldrDRegisterImmediateOffset(Instr instr); 1367 static int GetVldrDRegisterImmediateOffset(Instr instr);
1397 static Instr SetLdrRegisterImmediateOffset(Instr instr, int offset); 1368 static Instr SetLdrRegisterImmediateOffset(Instr instr, int offset);
1398 static Instr SetVldrDRegisterImmediateOffset(Instr instr, int offset); 1369 static Instr SetVldrDRegisterImmediateOffset(Instr instr, int offset);
1399 static bool IsStrRegisterImmediate(Instr instr); 1370 static bool IsStrRegisterImmediate(Instr instr);
1400 static Instr SetStrRegisterImmediateOffset(Instr instr, int offset); 1371 static Instr SetStrRegisterImmediateOffset(Instr instr, int offset);
1401 static bool IsAddRegisterImmediate(Instr instr); 1372 static bool IsAddRegisterImmediate(Instr instr);
1402 static Instr SetAddRegisterImmediateOffset(Instr instr, int offset); 1373 static Instr SetAddRegisterImmediateOffset(Instr instr, int offset);
1403 static Register GetRd(Instr instr); 1374 static Register GetRd(Instr instr);
1404 static Register GetRn(Instr instr); 1375 static Register GetRn(Instr instr);
1405 static Register GetRm(Instr instr); 1376 static Register GetRm(Instr instr);
1406 static bool IsPush(Instr instr); 1377 static bool IsPush(Instr instr);
1407 static bool IsPop(Instr instr); 1378 static bool IsPop(Instr instr);
1408 static bool IsStrRegFpOffset(Instr instr); 1379 static bool IsStrRegFpOffset(Instr instr);
1409 static bool IsLdrRegFpOffset(Instr instr); 1380 static bool IsLdrRegFpOffset(Instr instr);
1410 static bool IsStrRegFpNegOffset(Instr instr); 1381 static bool IsStrRegFpNegOffset(Instr instr);
1411 static bool IsLdrRegFpNegOffset(Instr instr); 1382 static bool IsLdrRegFpNegOffset(Instr instr);
1412 static bool IsLdrPcImmediateOffset(Instr instr); 1383 static bool IsLdrPcImmediateOffset(Instr instr);
1413 static bool IsVldrDPcImmediateOffset(Instr instr); 1384 static bool IsVldrDPcImmediateOffset(Instr instr);
1385 static bool IsBlxReg(Instr instr);
1386 static bool IsBlxIp(Instr instr);
1414 static bool IsTstImmediate(Instr instr); 1387 static bool IsTstImmediate(Instr instr);
1415 static bool IsCmpRegister(Instr instr); 1388 static bool IsCmpRegister(Instr instr);
1416 static bool IsCmpImmediate(Instr instr); 1389 static bool IsCmpImmediate(Instr instr);
1417 static Register GetCmpImmediateRegister(Instr instr); 1390 static Register GetCmpImmediateRegister(Instr instr);
1418 static int GetCmpImmediateRawImmediate(Instr instr); 1391 static int GetCmpImmediateRawImmediate(Instr instr);
1419 static bool IsNop(Instr instr, int type = NON_MARKING_NOP); 1392 static bool IsNop(Instr instr, int type = NON_MARKING_NOP);
1420 static bool IsMovT(Instr instr); 1393 static bool IsMovT(Instr instr);
1421 static bool IsMovW(Instr instr); 1394 static bool IsMovW(Instr instr);
1422 1395
1423 // Constants in pools are accessed via pc relative addressing, which can 1396 // Constants in pools are accessed via pc relative addressing, which can
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1629 public: 1602 public:
1630 explicit EnsureSpace(Assembler* assembler) { 1603 explicit EnsureSpace(Assembler* assembler) {
1631 assembler->CheckBuffer(); 1604 assembler->CheckBuffer();
1632 } 1605 }
1633 }; 1606 };
1634 1607
1635 1608
1636 } } // namespace v8::internal 1609 } } // namespace v8::internal
1637 1610
1638 #endif // V8_ARM_ASSEMBLER_ARM_H_ 1611 #endif // V8_ARM_ASSEMBLER_ARM_H_
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