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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 namespace v8 { | 8 namespace v8 { |
9 namespace internal { | 9 namespace internal { |
10 | 10 |
11 | 11 |
12 void ArrayNativeCode(MacroAssembler* masm, Label* call_generic_code); | 12 void ArrayNativeCode(MacroAssembler* masm, Label* call_generic_code); |
13 | 13 |
14 | 14 |
15 class StringHelper : public AllStatic { | 15 class StringHelper : public AllStatic { |
16 public: | 16 public: |
17 // Generate code for copying characters using the rep movs instruction. | 17 // Generate code for copying characters using the rep movs instruction. |
18 // Copies rcx characters from rsi to rdi. Copying of overlapping regions is | 18 // Copies rcx characters from rsi to rdi. Copying of overlapping regions is |
19 // not supported. | 19 // not supported. |
20 static void GenerateCopyCharacters(MacroAssembler* masm, | 20 static void GenerateCopyCharacters(MacroAssembler* masm, |
21 Register dest, | 21 Register dest, |
22 Register src, | 22 Register src, |
23 Register count, | 23 Register count, |
24 String::Encoding encoding); | 24 String::Encoding encoding); |
25 | 25 |
26 // Compares two flat ASCII strings and returns result in rax. | 26 // Compares two flat one-byte strings and returns result in rax. |
27 static void GenerateCompareFlatAsciiStrings( | 27 static void GenerateCompareFlatOneByteStrings( |
28 MacroAssembler* masm, Register left, Register right, Register scratch1, | 28 MacroAssembler* masm, Register left, Register right, Register scratch1, |
29 Register scratch2, Register scratch3, Register scratch4); | 29 Register scratch2, Register scratch3, Register scratch4); |
30 | 30 |
31 // Compares two flat ASCII strings for equality and returns result in rax. | 31 // Compares two flat one-byte strings for equality and returns result in rax. |
32 static void GenerateFlatAsciiStringEquals(MacroAssembler* masm, | 32 static void GenerateFlatOneByteStringEquals(MacroAssembler* masm, |
33 Register left, | 33 Register left, Register right, |
34 Register right, | 34 Register scratch1, |
35 Register scratch1, | 35 Register scratch2); |
36 Register scratch2); | |
37 | 36 |
38 private: | 37 private: |
39 static void GenerateAsciiCharsCompareLoop( | 38 static void GenerateOneByteCharsCompareLoop( |
40 MacroAssembler* masm, | 39 MacroAssembler* masm, Register left, Register right, Register length, |
41 Register left, | 40 Register scratch, Label* chars_not_equal, |
42 Register right, | |
43 Register length, | |
44 Register scratch, | |
45 Label* chars_not_equal, | |
46 Label::Distance near_jump = Label::kFar); | 41 Label::Distance near_jump = Label::kFar); |
47 | 42 |
48 DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper); | 43 DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper); |
49 }; | 44 }; |
50 | 45 |
51 | 46 |
52 class NameDictionaryLookupStub: public PlatformCodeStub { | 47 class NameDictionaryLookupStub: public PlatformCodeStub { |
53 public: | 48 public: |
54 enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP }; | 49 enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP }; |
55 | 50 |
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358 Label slow_; | 353 Label slow_; |
359 RegisterAllocation regs_; | 354 RegisterAllocation regs_; |
360 | 355 |
361 DISALLOW_COPY_AND_ASSIGN(RecordWriteStub); | 356 DISALLOW_COPY_AND_ASSIGN(RecordWriteStub); |
362 }; | 357 }; |
363 | 358 |
364 | 359 |
365 } } // namespace v8::internal | 360 } } // namespace v8::internal |
366 | 361 |
367 #endif // V8_X64_CODE_STUBS_X64_H_ | 362 #endif // V8_X64_CODE_STUBS_X64_H_ |
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