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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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_X64_CODE_STUBS_X64_H_ | 5 #ifndef V8_X64_CODE_STUBS_X64_H_ |
6 #define V8_X64_CODE_STUBS_X64_H_ | 6 #define V8_X64_CODE_STUBS_X64_H_ |
7 | 7 |
8 #include "src/code-stubs.h" | 8 #include "src/code-stubs.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 class StoreBufferOverflowStub: public PlatformCodeStub { | |
17 public: | |
18 StoreBufferOverflowStub(Isolate* isolate, SaveFPRegsMode save_fp) | |
19 : PlatformCodeStub(isolate), save_doubles_(save_fp) { } | |
20 | |
21 void Generate(MacroAssembler* masm); | |
22 | |
23 static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate); | |
24 virtual bool SometimesSetsUpAFrame() { return false; } | |
25 | |
26 private: | |
27 SaveFPRegsMode save_doubles_; | |
28 | |
29 Major MajorKey() const { return StoreBufferOverflow; } | |
30 uint32_t MinorKey() const { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; } | |
31 }; | |
32 | |
33 | 16 |
34 class StringHelper : public AllStatic { | 17 class StringHelper : public AllStatic { |
35 public: | 18 public: |
36 // Generate code for copying characters using the rep movs instruction. | 19 // Generate code for copying characters using the rep movs instruction. |
37 // Copies rcx characters from rsi to rdi. Copying of overlapping regions is | 20 // Copies rcx characters from rsi to rdi. Copying of overlapping regions is |
38 // not supported. | 21 // not supported. |
39 static void GenerateCopyCharacters(MacroAssembler* masm, | 22 static void GenerateCopyCharacters(MacroAssembler* masm, |
40 Register dest, | 23 Register dest, |
41 Register src, | 24 Register src, |
42 Register count, | 25 Register count, |
43 String::Encoding encoding); | 26 String::Encoding encoding); |
44 | 27 |
45 | 28 |
46 // Generate string hash. | 29 // Generate string hash. |
47 static void GenerateHashInit(MacroAssembler* masm, | 30 static void GenerateHashInit(MacroAssembler* masm, |
48 Register hash, | 31 Register hash, |
49 Register character, | 32 Register character, |
50 Register scratch); | 33 Register scratch); |
| 34 |
51 static void GenerateHashAddCharacter(MacroAssembler* masm, | 35 static void GenerateHashAddCharacter(MacroAssembler* masm, |
52 Register hash, | 36 Register hash, |
53 Register character, | 37 Register character, |
54 Register scratch); | 38 Register scratch); |
| 39 |
55 static void GenerateHashGetHash(MacroAssembler* masm, | 40 static void GenerateHashGetHash(MacroAssembler* masm, |
56 Register hash, | 41 Register hash, |
57 Register scratch); | 42 Register scratch); |
58 | 43 |
59 private: | 44 // Compares two flat ASCII strings and returns result in rax. |
60 DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper); | 45 static void GenerateCompareFlatAsciiStrings( |
61 }; | 46 MacroAssembler* masm, Register left, Register right, Register scratch1, |
| 47 Register scratch2, Register scratch3, Register scratch4); |
62 | 48 |
63 | 49 // Compares two flat ASCII strings for equality and returns result in rax. |
64 class SubStringStub: public PlatformCodeStub { | |
65 public: | |
66 explicit SubStringStub(Isolate* isolate) : PlatformCodeStub(isolate) {} | |
67 | |
68 private: | |
69 Major MajorKey() const { return SubString; } | |
70 uint32_t MinorKey() const { return 0; } | |
71 | |
72 void Generate(MacroAssembler* masm); | |
73 }; | |
74 | |
75 | |
76 class StringCompareStub: public PlatformCodeStub { | |
77 public: | |
78 explicit StringCompareStub(Isolate* isolate) : PlatformCodeStub(isolate) {} | |
79 | |
80 // Compares two flat ASCII strings and returns result in rax. | |
81 static void GenerateCompareFlatAsciiStrings(MacroAssembler* masm, | |
82 Register left, | |
83 Register right, | |
84 Register scratch1, | |
85 Register scratch2, | |
86 Register scratch3, | |
87 Register scratch4); | |
88 | |
89 // Compares two flat ASCII strings for equality and returns result | |
90 // in rax. | |
91 static void GenerateFlatAsciiStringEquals(MacroAssembler* masm, | 50 static void GenerateFlatAsciiStringEquals(MacroAssembler* masm, |
92 Register left, | 51 Register left, |
93 Register right, | 52 Register right, |
94 Register scratch1, | 53 Register scratch1, |
95 Register scratch2); | 54 Register scratch2); |
96 | 55 |
97 private: | 56 private: |
98 virtual Major MajorKey() const { return StringCompare; } | |
99 virtual uint32_t MinorKey() const { return 0; } | |
100 virtual void Generate(MacroAssembler* masm); | |
101 | |
102 static void GenerateAsciiCharsCompareLoop( | 57 static void GenerateAsciiCharsCompareLoop( |
103 MacroAssembler* masm, | 58 MacroAssembler* masm, |
104 Register left, | 59 Register left, |
105 Register right, | 60 Register right, |
106 Register length, | 61 Register length, |
107 Register scratch, | 62 Register scratch, |
108 Label* chars_not_equal, | 63 Label* chars_not_equal, |
109 Label::Distance near_jump = Label::kFar); | 64 Label::Distance near_jump = Label::kFar); |
| 65 |
| 66 DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper); |
110 }; | 67 }; |
111 | 68 |
112 | 69 |
113 class NameDictionaryLookupStub: public PlatformCodeStub { | 70 class NameDictionaryLookupStub: public PlatformCodeStub { |
114 public: | 71 public: |
115 enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP }; | 72 enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP }; |
116 | 73 |
117 NameDictionaryLookupStub(Isolate* isolate, | 74 NameDictionaryLookupStub(Isolate* isolate, |
118 Register dictionary, | 75 Register dictionary, |
119 Register result, | 76 Register result, |
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413 RememberedSetAction remembered_set_action_; | 370 RememberedSetAction remembered_set_action_; |
414 SaveFPRegsMode save_fp_regs_mode_; | 371 SaveFPRegsMode save_fp_regs_mode_; |
415 Label slow_; | 372 Label slow_; |
416 RegisterAllocation regs_; | 373 RegisterAllocation regs_; |
417 }; | 374 }; |
418 | 375 |
419 | 376 |
420 } } // namespace v8::internal | 377 } } // namespace v8::internal |
421 | 378 |
422 #endif // V8_X64_CODE_STUBS_X64_H_ | 379 #endif // V8_X64_CODE_STUBS_X64_H_ |
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