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Issue 2109613004: Remove position info from relocation info. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@turbosourcepos
Patch Set: fix Created 4 years, 5 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 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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1458 // an instruction or relocation information. 1458 // an instruction or relocation information.
1459 inline bool buffer_overflow() const { 1459 inline bool buffer_overflow() const {
1460 return pc_ >= reloc_info_writer.pos() - kGap; 1460 return pc_ >= reloc_info_writer.pos() - kGap;
1461 } 1461 }
1462 1462
1463 // Get the number of bytes available in the buffer. 1463 // Get the number of bytes available in the buffer.
1464 inline int available_space() const { return reloc_info_writer.pos() - pc_; } 1464 inline int available_space() const { return reloc_info_writer.pos() - pc_; }
1465 1465
1466 static bool IsNop(Address addr); 1466 static bool IsNop(Address addr);
1467 1467
1468 AssemblerPositionsRecorder* positions_recorder() {
1469 return &positions_recorder_;
1470 }
1471
1472 int relocation_writer_size() { 1468 int relocation_writer_size() {
1473 return (buffer_ + buffer_size_) - reloc_info_writer.pos(); 1469 return (buffer_ + buffer_size_) - reloc_info_writer.pos();
1474 } 1470 }
1475 1471
1476 // Avoid overflows for displacements etc. 1472 // Avoid overflows for displacements etc.
1477 static const int kMaximalBufferSize = 512*MB; 1473 static const int kMaximalBufferSize = 512*MB;
1478 1474
1479 byte byte_at(int pos) { return buffer_[pos]; } 1475 byte byte_at(int pos) { return buffer_[pos]; }
1480 void set_byte_at(int pos, byte value) { buffer_[pos] = value; } 1476 void set_byte_at(int pos, byte value) { buffer_[pos] = value; }
1481 1477
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1567 friend class CodePatcher; 1563 friend class CodePatcher;
1568 friend class EnsureSpace; 1564 friend class EnsureSpace;
1569 1565
1570 // Internal reference positions, required for (potential) patching in 1566 // Internal reference positions, required for (potential) patching in
1571 // GrowBuffer(); contains only those internal references whose labels 1567 // GrowBuffer(); contains only those internal references whose labels
1572 // are already bound. 1568 // are already bound.
1573 std::deque<int> internal_reference_positions_; 1569 std::deque<int> internal_reference_positions_;
1574 1570
1575 // code generation 1571 // code generation
1576 RelocInfoWriter reloc_info_writer; 1572 RelocInfoWriter reloc_info_writer;
1577
1578 AssemblerPositionsRecorder positions_recorder_;
1579 friend class AssemblerPositionsRecorder;
1580 }; 1573 };
1581 1574
1582 1575
1583 // Helper class that ensures that there is enough space for generating 1576 // Helper class that ensures that there is enough space for generating
1584 // instructions and relocation information. The constructor makes 1577 // instructions and relocation information. The constructor makes
1585 // sure that there is enough space and (in debug mode) the destructor 1578 // sure that there is enough space and (in debug mode) the destructor
1586 // checks that we did not generate too much. 1579 // checks that we did not generate too much.
1587 class EnsureSpace BASE_EMBEDDED { 1580 class EnsureSpace BASE_EMBEDDED {
1588 public: 1581 public:
1589 explicit EnsureSpace(Assembler* assembler) : assembler_(assembler) { 1582 explicit EnsureSpace(Assembler* assembler) : assembler_(assembler) {
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1604 Assembler* assembler_; 1597 Assembler* assembler_;
1605 #ifdef DEBUG 1598 #ifdef DEBUG
1606 int space_before_; 1599 int space_before_;
1607 #endif 1600 #endif
1608 }; 1601 };
1609 1602
1610 } // namespace internal 1603 } // namespace internal
1611 } // namespace v8 1604 } // namespace v8
1612 1605
1613 #endif // V8_IA32_ASSEMBLER_IA32_H_ 1606 #endif // V8_IA32_ASSEMBLER_IA32_H_
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