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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 119 | 119 |
| 120 static void GenerateHashGetHash(MacroAssembler* masm, | 120 static void GenerateHashGetHash(MacroAssembler* masm, |
| 121 Register hash, | 121 Register hash, |
| 122 Register scratch); | 122 Register scratch); |
| 123 | 123 |
| 124 private: | 124 private: |
| 125 DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper); | 125 DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper); |
| 126 }; | 126 }; |
| 127 | 127 |
| 128 | 128 |
| 129 // Flag that indicates how to generate code for the stub StringAddStub. | |
| 130 enum StringAddFlags { | |
| 131 NO_STRING_ADD_FLAGS = 1 << 0, | |
| 132 // Omit left string check in stub (left is definitely a string.) | |
| 133 NO_STRING_CHECK_LEFT_IN_STUB = 1 << 1, | |
| 134 // Omit right string check in stub (right is definitely a string.) | |
| 135 NO_STRING_CHECK_RIGHT_IN_STUB = 1 << 2, | |
| 136 // Stub needs a frame before calling the runtime | |
| 137 ERECT_FRAME = 1 << 3, | |
| 138 // Omit both string checks in stub. | |
| 139 NO_STRING_CHECK_IN_STUB = | |
| 140 NO_STRING_CHECK_LEFT_IN_STUB | NO_STRING_CHECK_RIGHT_IN_STUB | |
| 141 }; | |
| 142 | |
| 143 | |
| 144 class StringAddStub: public PlatformCodeStub { | 129 class StringAddStub: public PlatformCodeStub { |
| 145 public: | 130 public: |
| 146 explicit StringAddStub(StringAddFlags flags) : flags_(flags) {} | 131 explicit StringAddStub(StringAddFlags flags) : flags_(flags) {} |
| 147 | 132 |
| 148 private: | 133 private: |
| 149 Major MajorKey() { return StringAdd; } | 134 Major MajorKey() { return StringAdd; } |
| 150 int MinorKey() { return flags_; } | 135 int MinorKey() { return flags_; } |
| 151 | 136 |
| 152 void Generate(MacroAssembler* masm); | 137 void Generate(MacroAssembler* masm); |
| 153 | 138 |
| 154 void GenerateConvertArgument(MacroAssembler* masm, | 139 void GenerateConvertArgument(MacroAssembler* masm, |
| 155 Register arg, | 140 Register arg, |
| 156 Register scratch1, | 141 Register scratch1, |
| 157 Register scratch2, | 142 Register scratch2, |
| 158 Register scratch3, | 143 Register scratch3, |
| 159 Register scratch4, | 144 Register scratch4, |
| 160 Label* slow); | 145 Label* slow); |
| 161 | 146 |
| 162 void GenerateRegisterArgsPush(MacroAssembler* masm); | 147 void GenerateRegisterArgsPush(MacroAssembler* masm); |
| 163 void GenerateRegisterArgsPop(MacroAssembler* masm); | 148 void GenerateRegisterArgsPop(MacroAssembler* masm); |
| 164 | 149 |
| 165 const StringAddFlags flags_; | 150 const StringAddFlags flags_; |
| 166 }; | 151 }; |
| 167 | 152 |
| 168 | 153 |
| 169 class NumberToStringStub: public PlatformCodeStub { | 154 class NumberToStringStub: public PlatformCodeStub { |
| 170 public: | 155 public: |
| 171 NumberToStringStub() { } | 156 NumberToStringStub() { } |
| 172 | 157 |
| 173 enum ObjectType { | |
| 174 OBJECT_IS_SMI = 0, | |
| 175 OBJECT_IS_NOT_SMI = 1 | |
| 176 }; | |
| 177 | |
| 178 // Generate code to do a lookup in the number string cache. If the number in | 158 // Generate code to do a lookup in the number string cache. If the number in |
| 179 // the register object is found in the cache the generated code falls through | 159 // the register object is found in the cache the generated code falls through |
| 180 // with the result in the result register. The object and the result register | 160 // with the result in the result register. The object and the result register |
| 181 // can be the same. If the number is not found in the cache the code jumps to | 161 // can be the same. If the number is not found in the cache the code jumps to |
| 182 // the label not_found with only the content of register object unchanged. | 162 // the label not_found with only the content of register object unchanged. |
| 183 static void GenerateLookupNumberStringCache(MacroAssembler* masm, | 163 static void GenerateLookupNumberStringCache(MacroAssembler* masm, |
| 184 Register object, | 164 Register object, |
| 185 Register result, | 165 Register result, |
| 186 Register scratch1, | 166 Register scratch1, |
| 187 Register scratch2, | 167 Register scratch2, |
| 188 Register scratch3, | 168 Register scratch3, |
| 189 ObjectType object_type, | |
| 190 Label* not_found); | 169 Label* not_found); |
| 191 | 170 |
| 192 private: | 171 private: |
| 193 Major MajorKey() { return NumberToString; } | 172 Major MajorKey() { return NumberToString; } |
| 194 int MinorKey() { return 0; } | 173 int MinorKey() { return 0; } |
| 195 | 174 |
| 196 void Generate(MacroAssembler* masm); | 175 void Generate(MacroAssembler* masm); |
| 197 }; | 176 }; |
| 198 | 177 |
| 199 | 178 |
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| 571 Register length, | 550 Register length, |
| 572 Register scratch1, | 551 Register scratch1, |
| 573 Register scratch2, | 552 Register scratch2, |
| 574 Label* chars_not_equal); | 553 Label* chars_not_equal); |
| 575 }; | 554 }; |
| 576 | 555 |
| 577 | 556 |
| 578 } } // namespace v8::internal | 557 } } // namespace v8::internal |
| 579 | 558 |
| 580 #endif // V8_A64_CODE_STUBS_A64_H_ | 559 #endif // V8_A64_CODE_STUBS_A64_H_ |
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