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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 #include "src/ic-inl.h" | 8 #include "src/ic-inl.h" |
9 | 9 |
10 namespace v8 { | 10 namespace v8 { |
11 namespace internal { | 11 namespace internal { |
12 | 12 |
13 | 13 |
14 void ArrayNativeCode(MacroAssembler* masm, Label* call_generic_code); | 14 void ArrayNativeCode(MacroAssembler* masm, Label* call_generic_code); |
15 | 15 |
16 | 16 |
17 class StoreBufferOverflowStub: public PlatformCodeStub { | 17 class StoreBufferOverflowStub: public PlatformCodeStub { |
18 public: | 18 public: |
19 StoreBufferOverflowStub(Isolate* isolate, SaveFPRegsMode save_fp) | 19 StoreBufferOverflowStub(Isolate* isolate, SaveFPRegsMode save_fp) |
20 : PlatformCodeStub(isolate), save_doubles_(save_fp) {} | 20 : PlatformCodeStub(isolate), save_doubles_(save_fp) {} |
21 | 21 |
22 void Generate(MacroAssembler* masm); | 22 void Generate(MacroAssembler* masm); |
23 | 23 |
24 static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate); | 24 static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate); |
25 virtual bool SometimesSetsUpAFrame() { return false; } | 25 virtual bool SometimesSetsUpAFrame() { return false; } |
26 | 26 |
27 private: | 27 private: |
28 SaveFPRegsMode save_doubles_; | 28 SaveFPRegsMode save_doubles_; |
29 | 29 |
30 Major MajorKey() { return StoreBufferOverflow; } | 30 Major MajorKey() const { return StoreBufferOverflow; } |
31 int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; } | 31 int MinorKey() const { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; } |
32 }; | 32 }; |
33 | 33 |
34 | 34 |
35 class StringHelper : public AllStatic { | 35 class StringHelper : public AllStatic { |
36 public: | 36 public: |
37 // Generate code for copying a large number of characters. This function | 37 // Generate code for copying a large number of characters. This function |
38 // is allowed to spend extra time setting up conditions to make copying | 38 // is allowed to spend extra time setting up conditions to make copying |
39 // faster. Copying of overlapping regions is not supported. | 39 // faster. Copying of overlapping regions is not supported. |
40 // Dest register ends at the position after the last character written. | 40 // Dest register ends at the position after the last character written. |
41 static void GenerateCopyCharacters(MacroAssembler* masm, | 41 static void GenerateCopyCharacters(MacroAssembler* masm, |
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61 private: | 61 private: |
62 DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper); | 62 DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper); |
63 }; | 63 }; |
64 | 64 |
65 | 65 |
66 class SubStringStub: public PlatformCodeStub { | 66 class SubStringStub: public PlatformCodeStub { |
67 public: | 67 public: |
68 explicit SubStringStub(Isolate* isolate) : PlatformCodeStub(isolate) {} | 68 explicit SubStringStub(Isolate* isolate) : PlatformCodeStub(isolate) {} |
69 | 69 |
70 private: | 70 private: |
71 Major MajorKey() { return SubString; } | 71 Major MajorKey() const { return SubString; } |
72 int MinorKey() { return 0; } | 72 int MinorKey() const { return 0; } |
73 | 73 |
74 void Generate(MacroAssembler* masm); | 74 void Generate(MacroAssembler* masm); |
75 }; | 75 }; |
76 | 76 |
77 | 77 |
78 | 78 |
79 class StringCompareStub: public PlatformCodeStub { | 79 class StringCompareStub: public PlatformCodeStub { |
80 public: | 80 public: |
81 explicit StringCompareStub(Isolate* isolate) : PlatformCodeStub(isolate) { } | 81 explicit StringCompareStub(Isolate* isolate) : PlatformCodeStub(isolate) { } |
82 | 82 |
83 // Compares two flat ASCII strings and returns result in r0. | 83 // Compares two flat ASCII strings and returns result in r0. |
84 static void GenerateCompareFlatAsciiStrings(MacroAssembler* masm, | 84 static void GenerateCompareFlatAsciiStrings(MacroAssembler* masm, |
85 Register left, | 85 Register left, |
86 Register right, | 86 Register right, |
87 Register scratch1, | 87 Register scratch1, |
88 Register scratch2, | 88 Register scratch2, |
89 Register scratch3, | 89 Register scratch3, |
90 Register scratch4); | 90 Register scratch4); |
91 | 91 |
92 // Compares two flat ASCII strings for equality and returns result | 92 // Compares two flat ASCII strings for equality and returns result |
93 // in r0. | 93 // in r0. |
94 static void GenerateFlatAsciiStringEquals(MacroAssembler* masm, | 94 static void GenerateFlatAsciiStringEquals(MacroAssembler* masm, |
95 Register left, | 95 Register left, |
96 Register right, | 96 Register right, |
97 Register scratch1, | 97 Register scratch1, |
98 Register scratch2, | 98 Register scratch2, |
99 Register scratch3); | 99 Register scratch3); |
100 | 100 |
101 private: | 101 private: |
102 virtual Major MajorKey() { return StringCompare; } | 102 virtual Major MajorKey() const { return StringCompare; } |
103 virtual int MinorKey() { return 0; } | 103 virtual int MinorKey() const { return 0; } |
104 virtual void Generate(MacroAssembler* masm); | 104 virtual void Generate(MacroAssembler* masm); |
105 | 105 |
106 static void GenerateAsciiCharsCompareLoop(MacroAssembler* masm, | 106 static void GenerateAsciiCharsCompareLoop(MacroAssembler* masm, |
107 Register left, | 107 Register left, |
108 Register right, | 108 Register right, |
109 Register length, | 109 Register length, |
110 Register scratch1, | 110 Register scratch1, |
111 Register scratch2, | 111 Register scratch2, |
112 Label* chars_not_equal); | 112 Label* chars_not_equal); |
113 }; | 113 }; |
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132 private: | 132 private: |
133 Register the_int_; | 133 Register the_int_; |
134 Register the_heap_number_; | 134 Register the_heap_number_; |
135 Register scratch_; | 135 Register scratch_; |
136 | 136 |
137 // Minor key encoding in 16 bits. | 137 // Minor key encoding in 16 bits. |
138 class IntRegisterBits: public BitField<int, 0, 4> {}; | 138 class IntRegisterBits: public BitField<int, 0, 4> {}; |
139 class HeapNumberRegisterBits: public BitField<int, 4, 4> {}; | 139 class HeapNumberRegisterBits: public BitField<int, 4, 4> {}; |
140 class ScratchRegisterBits: public BitField<int, 8, 4> {}; | 140 class ScratchRegisterBits: public BitField<int, 8, 4> {}; |
141 | 141 |
142 Major MajorKey() { return WriteInt32ToHeapNumber; } | 142 Major MajorKey() const { return WriteInt32ToHeapNumber; } |
143 int MinorKey() { | 143 int MinorKey() const { |
144 // Encode the parameters in a unique 16 bit value. | 144 // Encode the parameters in a unique 16 bit value. |
145 return IntRegisterBits::encode(the_int_.code()) | 145 return IntRegisterBits::encode(the_int_.code()) |
146 | HeapNumberRegisterBits::encode(the_heap_number_.code()) | 146 | HeapNumberRegisterBits::encode(the_heap_number_.code()) |
147 | ScratchRegisterBits::encode(scratch_.code()); | 147 | ScratchRegisterBits::encode(scratch_.code()); |
148 } | 148 } |
149 | 149 |
150 void Generate(MacroAssembler* masm); | 150 void Generate(MacroAssembler* masm); |
151 }; | 151 }; |
152 | 152 |
153 | 153 |
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298 }; | 298 }; |
299 | 299 |
300 void Generate(MacroAssembler* masm); | 300 void Generate(MacroAssembler* masm); |
301 void GenerateIncremental(MacroAssembler* masm, Mode mode); | 301 void GenerateIncremental(MacroAssembler* masm, Mode mode); |
302 void CheckNeedsToInformIncrementalMarker( | 302 void CheckNeedsToInformIncrementalMarker( |
303 MacroAssembler* masm, | 303 MacroAssembler* masm, |
304 OnNoNeedToInformIncrementalMarker on_no_need, | 304 OnNoNeedToInformIncrementalMarker on_no_need, |
305 Mode mode); | 305 Mode mode); |
306 void InformIncrementalMarker(MacroAssembler* masm); | 306 void InformIncrementalMarker(MacroAssembler* masm); |
307 | 307 |
308 Major MajorKey() { return RecordWrite; } | 308 Major MajorKey() const { return RecordWrite; } |
309 | 309 |
310 int MinorKey() { | 310 int MinorKey() const { |
311 return ObjectBits::encode(object_.code()) | | 311 return ObjectBits::encode(object_.code()) | |
312 ValueBits::encode(value_.code()) | | 312 ValueBits::encode(value_.code()) | |
313 AddressBits::encode(address_.code()) | | 313 AddressBits::encode(address_.code()) | |
314 RememberedSetActionBits::encode(remembered_set_action_) | | 314 RememberedSetActionBits::encode(remembered_set_action_) | |
315 SaveFPRegsModeBits::encode(save_fp_regs_mode_); | 315 SaveFPRegsModeBits::encode(save_fp_regs_mode_); |
316 } | 316 } |
317 | 317 |
318 void Activate(Code* code) { | 318 void Activate(Code* code) { |
319 code->GetHeap()->incremental_marking()->ActivateGeneratedStub(code); | 319 code->GetHeap()->incremental_marking()->ActivateGeneratedStub(code); |
320 } | 320 } |
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340 // keep the code which called into native pinned in the memory. Currently the | 340 // keep the code which called into native pinned in the memory. Currently the |
341 // simplest approach is to generate such stub early enough so it can never be | 341 // simplest approach is to generate such stub early enough so it can never be |
342 // moved by GC | 342 // moved by GC |
343 class DirectCEntryStub: public PlatformCodeStub { | 343 class DirectCEntryStub: public PlatformCodeStub { |
344 public: | 344 public: |
345 explicit DirectCEntryStub(Isolate* isolate) : PlatformCodeStub(isolate) {} | 345 explicit DirectCEntryStub(Isolate* isolate) : PlatformCodeStub(isolate) {} |
346 void Generate(MacroAssembler* masm); | 346 void Generate(MacroAssembler* masm); |
347 void GenerateCall(MacroAssembler* masm, Register target); | 347 void GenerateCall(MacroAssembler* masm, Register target); |
348 | 348 |
349 private: | 349 private: |
350 Major MajorKey() { return DirectCEntry; } | 350 Major MajorKey() const { return DirectCEntry; } |
351 int MinorKey() { return 0; } | 351 int MinorKey() const { return 0; } |
352 | 352 |
353 bool NeedsImmovableCode() { return true; } | 353 bool NeedsImmovableCode() { return true; } |
354 }; | 354 }; |
355 | 355 |
356 | 356 |
357 class NameDictionaryLookupStub: public PlatformCodeStub { | 357 class NameDictionaryLookupStub: public PlatformCodeStub { |
358 public: | 358 public: |
359 enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP }; | 359 enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP }; |
360 | 360 |
361 NameDictionaryLookupStub(Isolate* isolate, LookupMode mode) | 361 NameDictionaryLookupStub(Isolate* isolate, LookupMode mode) |
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386 static const int kTotalProbes = 20; | 386 static const int kTotalProbes = 20; |
387 | 387 |
388 static const int kCapacityOffset = | 388 static const int kCapacityOffset = |
389 NameDictionary::kHeaderSize + | 389 NameDictionary::kHeaderSize + |
390 NameDictionary::kCapacityIndex * kPointerSize; | 390 NameDictionary::kCapacityIndex * kPointerSize; |
391 | 391 |
392 static const int kElementsStartOffset = | 392 static const int kElementsStartOffset = |
393 NameDictionary::kHeaderSize + | 393 NameDictionary::kHeaderSize + |
394 NameDictionary::kElementsStartIndex * kPointerSize; | 394 NameDictionary::kElementsStartIndex * kPointerSize; |
395 | 395 |
396 Major MajorKey() { return NameDictionaryLookup; } | 396 Major MajorKey() const { return NameDictionaryLookup; } |
397 | 397 |
398 int MinorKey() { | 398 int MinorKey() const { return LookupModeBits::encode(mode_); } |
399 return LookupModeBits::encode(mode_); | |
400 } | |
401 | 399 |
402 class LookupModeBits: public BitField<LookupMode, 0, 1> {}; | 400 class LookupModeBits: public BitField<LookupMode, 0, 1> {}; |
403 | 401 |
404 LookupMode mode_; | 402 LookupMode mode_; |
405 }; | 403 }; |
406 | 404 |
407 | 405 |
408 class PlatformCallInterfaceDescriptor { | 406 class PlatformCallInterfaceDescriptor { |
409 public: | 407 public: |
410 explicit PlatformCallInterfaceDescriptor( | 408 explicit PlatformCallInterfaceDescriptor( |
411 TargetAddressStorageMode storage_mode) | 409 TargetAddressStorageMode storage_mode) |
412 : storage_mode_(storage_mode) { } | 410 : storage_mode_(storage_mode) { } |
413 | 411 |
414 TargetAddressStorageMode storage_mode() { return storage_mode_; } | 412 TargetAddressStorageMode storage_mode() { return storage_mode_; } |
415 | 413 |
416 private: | 414 private: |
417 TargetAddressStorageMode storage_mode_; | 415 TargetAddressStorageMode storage_mode_; |
418 }; | 416 }; |
419 | 417 |
420 | 418 |
421 } } // namespace v8::internal | 419 } } // namespace v8::internal |
422 | 420 |
423 #endif // V8_ARM_CODE_STUBS_ARM_H_ | 421 #endif // V8_ARM_CODE_STUBS_ARM_H_ |
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