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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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1510 std::ostream& operator<<(std::ostream& os, const CompareNilICStub::State& s); | 1510 std::ostream& operator<<(std::ostream& os, const CompareNilICStub::State& s); |
1511 | 1511 |
1512 | 1512 |
1513 class CEntryStub : public PlatformCodeStub { | 1513 class CEntryStub : public PlatformCodeStub { |
1514 public: | 1514 public: |
1515 CEntryStub(Isolate* isolate, int result_size, | 1515 CEntryStub(Isolate* isolate, int result_size, |
1516 SaveFPRegsMode save_doubles = kDontSaveFPRegs) | 1516 SaveFPRegsMode save_doubles = kDontSaveFPRegs) |
1517 : PlatformCodeStub(isolate) { | 1517 : PlatformCodeStub(isolate) { |
1518 minor_key_ = SaveDoublesBits::encode(save_doubles == kSaveFPRegs); | 1518 minor_key_ = SaveDoublesBits::encode(save_doubles == kSaveFPRegs); |
1519 DCHECK(result_size == 1 || result_size == 2); | 1519 DCHECK(result_size == 1 || result_size == 2); |
1520 #if _WIN64 || (V8_TARGET_ARCH_PPC64 && !ABI_RETURNS_OBJECT_PAIRS_IN_REGS) | 1520 #if _WIN64 || V8_TARGET_ARCH_PPC |
1521 minor_key_ = ResultSizeBits::update(minor_key_, result_size); | 1521 minor_key_ = ResultSizeBits::update(minor_key_, result_size); |
1522 #endif // _WIN64 | 1522 #endif // _WIN64 |
1523 } | 1523 } |
1524 | 1524 |
1525 // The version of this stub that doesn't save doubles is generated ahead of | 1525 // The version of this stub that doesn't save doubles is generated ahead of |
1526 // time, so it's OK to call it from other stubs that can't cope with GC during | 1526 // time, so it's OK to call it from other stubs that can't cope with GC during |
1527 // their code generation. On machines that always have gp registers (x64) we | 1527 // their code generation. On machines that always have gp registers (x64) we |
1528 // can generate both variants ahead of time. | 1528 // can generate both variants ahead of time. |
1529 static void GenerateAheadOfTime(Isolate* isolate); | 1529 static void GenerateAheadOfTime(Isolate* isolate); |
1530 | 1530 |
1531 private: | 1531 private: |
1532 bool save_doubles() const { return SaveDoublesBits::decode(minor_key_); } | 1532 bool save_doubles() const { return SaveDoublesBits::decode(minor_key_); } |
1533 #if _WIN64 || (V8_TARGET_ARCH_PPC64 && !ABI_RETURNS_OBJECT_PAIRS_IN_REGS) | 1533 #if _WIN64 || V8_TARGET_ARCH_PPC |
1534 int result_size() const { return ResultSizeBits::decode(minor_key_); } | 1534 int result_size() const { return ResultSizeBits::decode(minor_key_); } |
1535 #endif // _WIN64 | 1535 #endif // _WIN64 |
1536 | 1536 |
1537 bool NeedsImmovableCode() OVERRIDE; | 1537 bool NeedsImmovableCode() OVERRIDE; |
1538 | 1538 |
1539 class SaveDoublesBits : public BitField<bool, 0, 1> {}; | 1539 class SaveDoublesBits : public BitField<bool, 0, 1> {}; |
1540 class ResultSizeBits : public BitField<int, 1, 3> {}; | 1540 class ResultSizeBits : public BitField<int, 1, 3> {}; |
1541 | 1541 |
1542 DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); | 1542 DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); |
1543 DEFINE_PLATFORM_CODE_STUB(CEntry, PlatformCodeStub); | 1543 DEFINE_PLATFORM_CODE_STUB(CEntry, PlatformCodeStub); |
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2634 | 2634 |
2635 #undef DEFINE_CALL_INTERFACE_DESCRIPTOR | 2635 #undef DEFINE_CALL_INTERFACE_DESCRIPTOR |
2636 #undef DEFINE_PLATFORM_CODE_STUB | 2636 #undef DEFINE_PLATFORM_CODE_STUB |
2637 #undef DEFINE_HANDLER_CODE_STUB | 2637 #undef DEFINE_HANDLER_CODE_STUB |
2638 #undef DEFINE_HYDROGEN_CODE_STUB | 2638 #undef DEFINE_HYDROGEN_CODE_STUB |
2639 #undef DEFINE_CODE_STUB | 2639 #undef DEFINE_CODE_STUB |
2640 #undef DEFINE_CODE_STUB_BASE | 2640 #undef DEFINE_CODE_STUB_BASE |
2641 } } // namespace v8::internal | 2641 } } // namespace v8::internal |
2642 | 2642 |
2643 #endif // V8_CODE_STUBS_H_ | 2643 #endif // V8_CODE_STUBS_H_ |
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