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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_CODE_STUBS_H_ | 5 #ifndef V8_CODE_STUBS_H_ |
6 #define V8_CODE_STUBS_H_ | 6 #define V8_CODE_STUBS_H_ |
7 | 7 |
8 #include "src/allocation.h" | 8 #include "src/allocation.h" |
9 #include "src/assembler.h" | 9 #include "src/assembler.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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1512 std::ostream& operator<<(std::ostream& os, const CompareNilICStub::State& s); | 1512 std::ostream& operator<<(std::ostream& os, const CompareNilICStub::State& s); |
1513 | 1513 |
1514 | 1514 |
1515 class CEntryStub : public PlatformCodeStub { | 1515 class CEntryStub : public PlatformCodeStub { |
1516 public: | 1516 public: |
1517 CEntryStub(Isolate* isolate, int result_size, | 1517 CEntryStub(Isolate* isolate, int result_size, |
1518 SaveFPRegsMode save_doubles = kDontSaveFPRegs) | 1518 SaveFPRegsMode save_doubles = kDontSaveFPRegs) |
1519 : PlatformCodeStub(isolate) { | 1519 : PlatformCodeStub(isolate) { |
1520 minor_key_ = SaveDoublesBits::encode(save_doubles == kSaveFPRegs); | 1520 minor_key_ = SaveDoublesBits::encode(save_doubles == kSaveFPRegs); |
1521 DCHECK(result_size == 1 || result_size == 2); | 1521 DCHECK(result_size == 1 || result_size == 2); |
1522 #if _WIN64 || (V8_TARGET_ARCH_PPC64 && !ABI_RETURNS_OBJECT_PAIRS_IN_REGS) | 1522 #if _WIN64 || V8_TARGET_ARCH_PPC |
1523 minor_key_ = ResultSizeBits::update(minor_key_, result_size); | 1523 minor_key_ = ResultSizeBits::update(minor_key_, result_size); |
1524 #endif // _WIN64 | 1524 #endif // _WIN64 |
1525 } | 1525 } |
1526 | 1526 |
1527 // The version of this stub that doesn't save doubles is generated ahead of | 1527 // The version of this stub that doesn't save doubles is generated ahead of |
1528 // time, so it's OK to call it from other stubs that can't cope with GC during | 1528 // time, so it's OK to call it from other stubs that can't cope with GC during |
1529 // their code generation. On machines that always have gp registers (x64) we | 1529 // their code generation. On machines that always have gp registers (x64) we |
1530 // can generate both variants ahead of time. | 1530 // can generate both variants ahead of time. |
1531 static void GenerateAheadOfTime(Isolate* isolate); | 1531 static void GenerateAheadOfTime(Isolate* isolate); |
1532 | 1532 |
1533 private: | 1533 private: |
1534 bool save_doubles() const { return SaveDoublesBits::decode(minor_key_); } | 1534 bool save_doubles() const { return SaveDoublesBits::decode(minor_key_); } |
1535 #if _WIN64 || (V8_TARGET_ARCH_PPC64 && !ABI_RETURNS_OBJECT_PAIRS_IN_REGS) | 1535 #if _WIN64 || V8_TARGET_ARCH_PPC |
1536 int result_size() const { return ResultSizeBits::decode(minor_key_); } | 1536 int result_size() const { return ResultSizeBits::decode(minor_key_); } |
1537 #endif // _WIN64 | 1537 #endif // _WIN64 |
1538 | 1538 |
1539 bool NeedsImmovableCode() OVERRIDE; | 1539 bool NeedsImmovableCode() OVERRIDE; |
1540 | 1540 |
1541 class SaveDoublesBits : public BitField<bool, 0, 1> {}; | 1541 class SaveDoublesBits : public BitField<bool, 0, 1> {}; |
1542 class ResultSizeBits : public BitField<int, 1, 3> {}; | 1542 class ResultSizeBits : public BitField<int, 1, 3> {}; |
1543 | 1543 |
1544 DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); | 1544 DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); |
1545 DEFINE_PLATFORM_CODE_STUB(CEntry, PlatformCodeStub); | 1545 DEFINE_PLATFORM_CODE_STUB(CEntry, PlatformCodeStub); |
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2671 | 2671 |
2672 #undef DEFINE_CALL_INTERFACE_DESCRIPTOR | 2672 #undef DEFINE_CALL_INTERFACE_DESCRIPTOR |
2673 #undef DEFINE_PLATFORM_CODE_STUB | 2673 #undef DEFINE_PLATFORM_CODE_STUB |
2674 #undef DEFINE_HANDLER_CODE_STUB | 2674 #undef DEFINE_HANDLER_CODE_STUB |
2675 #undef DEFINE_HYDROGEN_CODE_STUB | 2675 #undef DEFINE_HYDROGEN_CODE_STUB |
2676 #undef DEFINE_CODE_STUB | 2676 #undef DEFINE_CODE_STUB |
2677 #undef DEFINE_CODE_STUB_BASE | 2677 #undef DEFINE_CODE_STUB_BASE |
2678 } } // namespace v8::internal | 2678 } } // namespace v8::internal |
2679 | 2679 |
2680 #endif // V8_CODE_STUBS_H_ | 2680 #endif // V8_CODE_STUBS_H_ |
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