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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_ARM_CODE_STUBS_ARM_H_ | 5 #ifndef V8_ARM_CODE_STUBS_ARM_H_ |
| 6 #define V8_ARM_CODE_STUBS_ARM_H_ | 6 #define V8_ARM_CODE_STUBS_ARM_H_ |
| 7 | 7 |
| 8 namespace v8 { | 8 namespace v8 { |
| 9 namespace internal { | 9 namespace internal { |
| 10 | 10 |
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| 67 | 67 |
| 68 RecordWriteStub(uint32_t key, Isolate* isolate) | 68 RecordWriteStub(uint32_t key, Isolate* isolate) |
| 69 : PlatformCodeStub(key, isolate), regs_(object(), address(), value()) {} | 69 : PlatformCodeStub(key, isolate), regs_(object(), address(), value()) {} |
| 70 | 70 |
| 71 enum Mode { | 71 enum Mode { |
| 72 STORE_BUFFER_ONLY, | 72 STORE_BUFFER_ONLY, |
| 73 INCREMENTAL, | 73 INCREMENTAL, |
| 74 INCREMENTAL_COMPACTION | 74 INCREMENTAL_COMPACTION |
| 75 }; | 75 }; |
| 76 | 76 |
| 77 bool SometimesSetsUpAFrame() OVERRIDE { return false; } | 77 bool SometimesSetsUpAFrame() override { return false; } |
| 78 | 78 |
| 79 static void PatchBranchIntoNop(MacroAssembler* masm, int pos) { | 79 static void PatchBranchIntoNop(MacroAssembler* masm, int pos) { |
| 80 masm->instr_at_put(pos, (masm->instr_at(pos) & ~B27) | (B24 | B20)); | 80 masm->instr_at_put(pos, (masm->instr_at(pos) & ~B27) | (B24 | B20)); |
| 81 DCHECK(Assembler::IsTstImmediate(masm->instr_at(pos))); | 81 DCHECK(Assembler::IsTstImmediate(masm->instr_at(pos))); |
| 82 } | 82 } |
| 83 | 83 |
| 84 static void PatchNopIntoBranch(MacroAssembler* masm, int pos) { | 84 static void PatchNopIntoBranch(MacroAssembler* masm, int pos) { |
| 85 masm->instr_at_put(pos, (masm->instr_at(pos) & ~(B24 | B20)) | B27); | 85 masm->instr_at_put(pos, (masm->instr_at(pos) & ~(B24 | B20)) | B27); |
| 86 DCHECK(Assembler::IsBranch(masm->instr_at(pos))); | 86 DCHECK(Assembler::IsBranch(masm->instr_at(pos))); |
| 87 } | 87 } |
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| 190 Register scratch1_; | 190 Register scratch1_; |
| 191 | 191 |
| 192 friend class RecordWriteStub; | 192 friend class RecordWriteStub; |
| 193 }; | 193 }; |
| 194 | 194 |
| 195 enum OnNoNeedToInformIncrementalMarker { | 195 enum OnNoNeedToInformIncrementalMarker { |
| 196 kReturnOnNoNeedToInformIncrementalMarker, | 196 kReturnOnNoNeedToInformIncrementalMarker, |
| 197 kUpdateRememberedSetOnNoNeedToInformIncrementalMarker | 197 kUpdateRememberedSetOnNoNeedToInformIncrementalMarker |
| 198 }; | 198 }; |
| 199 | 199 |
| 200 inline Major MajorKey() const FINAL { return RecordWrite; } | 200 inline Major MajorKey() const final { return RecordWrite; } |
| 201 | 201 |
| 202 void Generate(MacroAssembler* masm) OVERRIDE; | 202 void Generate(MacroAssembler* masm) override; |
| 203 void GenerateIncremental(MacroAssembler* masm, Mode mode); | 203 void GenerateIncremental(MacroAssembler* masm, Mode mode); |
| 204 void CheckNeedsToInformIncrementalMarker( | 204 void CheckNeedsToInformIncrementalMarker( |
| 205 MacroAssembler* masm, | 205 MacroAssembler* masm, |
| 206 OnNoNeedToInformIncrementalMarker on_no_need, | 206 OnNoNeedToInformIncrementalMarker on_no_need, |
| 207 Mode mode); | 207 Mode mode); |
| 208 void InformIncrementalMarker(MacroAssembler* masm); | 208 void InformIncrementalMarker(MacroAssembler* masm); |
| 209 | 209 |
| 210 void Activate(Code* code) OVERRIDE { | 210 void Activate(Code* code) override { |
| 211 code->GetHeap()->incremental_marking()->ActivateGeneratedStub(code); | 211 code->GetHeap()->incremental_marking()->ActivateGeneratedStub(code); |
| 212 } | 212 } |
| 213 | 213 |
| 214 Register object() const { | 214 Register object() const { |
| 215 return Register::from_code(ObjectBits::decode(minor_key_)); | 215 return Register::from_code(ObjectBits::decode(minor_key_)); |
| 216 } | 216 } |
| 217 | 217 |
| 218 Register value() const { | 218 Register value() const { |
| 219 return Register::from_code(ValueBits::decode(minor_key_)); | 219 return Register::from_code(ValueBits::decode(minor_key_)); |
| 220 } | 220 } |
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| 248 // in the presence of compacting GC (which can move code objects) we need to | 248 // in the presence of compacting GC (which can move code objects) we need to |
| 249 // keep the code which called into native pinned in the memory. Currently the | 249 // keep the code which called into native pinned in the memory. Currently the |
| 250 // simplest approach is to generate such stub early enough so it can never be | 250 // simplest approach is to generate such stub early enough so it can never be |
| 251 // moved by GC | 251 // moved by GC |
| 252 class DirectCEntryStub: public PlatformCodeStub { | 252 class DirectCEntryStub: public PlatformCodeStub { |
| 253 public: | 253 public: |
| 254 explicit DirectCEntryStub(Isolate* isolate) : PlatformCodeStub(isolate) {} | 254 explicit DirectCEntryStub(Isolate* isolate) : PlatformCodeStub(isolate) {} |
| 255 void GenerateCall(MacroAssembler* masm, Register target); | 255 void GenerateCall(MacroAssembler* masm, Register target); |
| 256 | 256 |
| 257 private: | 257 private: |
| 258 bool NeedsImmovableCode() OVERRIDE { return true; } | 258 bool NeedsImmovableCode() override { return true; } |
| 259 | 259 |
| 260 DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); | 260 DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); |
| 261 DEFINE_PLATFORM_CODE_STUB(DirectCEntry, PlatformCodeStub); | 261 DEFINE_PLATFORM_CODE_STUB(DirectCEntry, PlatformCodeStub); |
| 262 }; | 262 }; |
| 263 | 263 |
| 264 | 264 |
| 265 class NameDictionaryLookupStub: public PlatformCodeStub { | 265 class NameDictionaryLookupStub: public PlatformCodeStub { |
| 266 public: | 266 public: |
| 267 enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP }; | 267 enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP }; |
| 268 | 268 |
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| 280 Register scratch0); | 280 Register scratch0); |
| 281 | 281 |
| 282 static void GeneratePositiveLookup(MacroAssembler* masm, | 282 static void GeneratePositiveLookup(MacroAssembler* masm, |
| 283 Label* miss, | 283 Label* miss, |
| 284 Label* done, | 284 Label* done, |
| 285 Register elements, | 285 Register elements, |
| 286 Register name, | 286 Register name, |
| 287 Register r0, | 287 Register r0, |
| 288 Register r1); | 288 Register r1); |
| 289 | 289 |
| 290 bool SometimesSetsUpAFrame() OVERRIDE { return false; } | 290 bool SometimesSetsUpAFrame() override { return false; } |
| 291 | 291 |
| 292 private: | 292 private: |
| 293 static const int kInlinedProbes = 4; | 293 static const int kInlinedProbes = 4; |
| 294 static const int kTotalProbes = 20; | 294 static const int kTotalProbes = 20; |
| 295 | 295 |
| 296 static const int kCapacityOffset = | 296 static const int kCapacityOffset = |
| 297 NameDictionary::kHeaderSize + | 297 NameDictionary::kHeaderSize + |
| 298 NameDictionary::kCapacityIndex * kPointerSize; | 298 NameDictionary::kCapacityIndex * kPointerSize; |
| 299 | 299 |
| 300 static const int kElementsStartOffset = | 300 static const int kElementsStartOffset = |
| 301 NameDictionary::kHeaderSize + | 301 NameDictionary::kHeaderSize + |
| 302 NameDictionary::kElementsStartIndex * kPointerSize; | 302 NameDictionary::kElementsStartIndex * kPointerSize; |
| 303 | 303 |
| 304 LookupMode mode() const { return LookupModeBits::decode(minor_key_); } | 304 LookupMode mode() const { return LookupModeBits::decode(minor_key_); } |
| 305 | 305 |
| 306 class LookupModeBits: public BitField<LookupMode, 0, 1> {}; | 306 class LookupModeBits: public BitField<LookupMode, 0, 1> {}; |
| 307 | 307 |
| 308 DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); | 308 DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); |
| 309 DEFINE_PLATFORM_CODE_STUB(NameDictionaryLookup, PlatformCodeStub); | 309 DEFINE_PLATFORM_CODE_STUB(NameDictionaryLookup, PlatformCodeStub); |
| 310 }; | 310 }; |
| 311 | 311 |
| 312 } } // namespace v8::internal | 312 } } // namespace v8::internal |
| 313 | 313 |
| 314 #endif // V8_ARM_CODE_STUBS_ARM_H_ | 314 #endif // V8_ARM_CODE_STUBS_ARM_H_ |
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