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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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