ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1 | // Copyright 2010 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #ifndef V8_IA32_CODE_STUBS_IA32_H_ |
| 29 | #define V8_IA32_CODE_STUBS_IA32_H_ |
| 30 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 31 | #include "macro-assembler.h" |
| 32 | #include "code-stubs.h" |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 33 | #include "ic-inl.h" |
| 34 | |
| 35 | namespace v8 { |
| 36 | namespace internal { |
| 37 | |
| 38 | |
| 39 | // Compute a transcendental math function natively, or call the |
| 40 | // TranscendentalCache runtime function. |
| 41 | class TranscendentalCacheStub: public CodeStub { |
| 42 | public: |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 43 | enum ArgumentType { |
| 44 | TAGGED = 0, |
| 45 | UNTAGGED = 1 << TranscendentalCache::kTranscendentalTypeBits |
| 46 | }; |
| 47 | |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 48 | TranscendentalCacheStub(TranscendentalCache::Type type, |
| 49 | ArgumentType argument_type) |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 50 | : type_(type), argument_type_(argument_type) {} |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 51 | void Generate(MacroAssembler* masm); |
| 52 | private: |
| 53 | TranscendentalCache::Type type_; |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 54 | ArgumentType argument_type_; |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 55 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 56 | Major MajorKey() { return TranscendentalCache; } |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 57 | int MinorKey() { return type_ | argument_type_; } |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 58 | Runtime::FunctionId RuntimeFunction(); |
| 59 | void GenerateOperation(MacroAssembler* masm); |
| 60 | }; |
| 61 | |
| 62 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 63 | class ToBooleanStub: public CodeStub { |
| 64 | public: |
| 65 | ToBooleanStub() { } |
| 66 | |
| 67 | void Generate(MacroAssembler* masm); |
| 68 | |
| 69 | private: |
| 70 | Major MajorKey() { return ToBoolean; } |
| 71 | int MinorKey() { return 0; } |
| 72 | }; |
| 73 | |
| 74 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 75 | class UnaryOpStub: public CodeStub { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 76 | public: |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 77 | UnaryOpStub(Token::Value op, UnaryOverwriteMode mode) |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 78 | : op_(op), |
| 79 | mode_(mode), |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 80 | operand_type_(UnaryOpIC::UNINITIALIZED), |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 81 | name_(NULL) { |
| 82 | } |
| 83 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 84 | UnaryOpStub(int key, UnaryOpIC::TypeInfo operand_type) |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 85 | : op_(OpBits::decode(key)), |
| 86 | mode_(ModeBits::decode(key)), |
| 87 | operand_type_(operand_type), |
| 88 | name_(NULL) { |
| 89 | } |
| 90 | |
| 91 | private: |
| 92 | Token::Value op_; |
| 93 | UnaryOverwriteMode mode_; |
| 94 | |
| 95 | // Operand type information determined at runtime. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 96 | UnaryOpIC::TypeInfo operand_type_; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 97 | |
| 98 | char* name_; |
| 99 | |
| 100 | const char* GetName(); |
| 101 | |
| 102 | #ifdef DEBUG |
| 103 | void Print() { |
| 104 | PrintF("TypeRecordingUnaryOpStub %d (op %s), " |
| 105 | "(mode %d, runtime_type_info %s)\n", |
| 106 | MinorKey(), |
| 107 | Token::String(op_), |
| 108 | static_cast<int>(mode_), |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 109 | UnaryOpIC::GetName(operand_type_)); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 110 | } |
| 111 | #endif |
| 112 | |
| 113 | class ModeBits: public BitField<UnaryOverwriteMode, 0, 1> {}; |
| 114 | class OpBits: public BitField<Token::Value, 1, 7> {}; |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 115 | class OperandTypeInfoBits: public BitField<UnaryOpIC::TypeInfo, 8, 3> {}; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 116 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 117 | Major MajorKey() { return UnaryOp; } |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 118 | int MinorKey() { |
| 119 | return ModeBits::encode(mode_) |
| 120 | | OpBits::encode(op_) |
| 121 | | OperandTypeInfoBits::encode(operand_type_); |
| 122 | } |
| 123 | |
| 124 | // Note: A lot of the helper functions below will vanish when we use virtual |
| 125 | // function instead of switch more often. |
| 126 | void Generate(MacroAssembler* masm); |
| 127 | |
| 128 | void GenerateTypeTransition(MacroAssembler* masm); |
| 129 | |
| 130 | void GenerateSmiStub(MacroAssembler* masm); |
| 131 | void GenerateSmiStubSub(MacroAssembler* masm); |
| 132 | void GenerateSmiStubBitNot(MacroAssembler* masm); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 133 | void GenerateSmiCodeSub(MacroAssembler* masm, |
| 134 | Label* non_smi, |
| 135 | Label* undo, |
| 136 | Label* slow, |
| 137 | Label::Distance non_smi_near = Label::kFar, |
| 138 | Label::Distance undo_near = Label::kFar, |
| 139 | Label::Distance slow_near = Label::kFar); |
| 140 | void GenerateSmiCodeBitNot(MacroAssembler* masm, |
| 141 | Label* non_smi, |
| 142 | Label::Distance non_smi_near = Label::kFar); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 143 | void GenerateSmiCodeUndo(MacroAssembler* masm); |
| 144 | |
| 145 | void GenerateHeapNumberStub(MacroAssembler* masm); |
| 146 | void GenerateHeapNumberStubSub(MacroAssembler* masm); |
| 147 | void GenerateHeapNumberStubBitNot(MacroAssembler* masm); |
| 148 | void GenerateHeapNumberCodeSub(MacroAssembler* masm, Label* slow); |
| 149 | void GenerateHeapNumberCodeBitNot(MacroAssembler* masm, Label* slow); |
| 150 | |
| 151 | void GenerateGenericStub(MacroAssembler* masm); |
| 152 | void GenerateGenericStubSub(MacroAssembler* masm); |
| 153 | void GenerateGenericStubBitNot(MacroAssembler* masm); |
| 154 | void GenerateGenericCodeFallback(MacroAssembler* masm); |
| 155 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 156 | virtual int GetCodeKind() { return Code::UNARY_OP_IC; } |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 157 | |
| 158 | virtual InlineCacheState GetICState() { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 159 | return UnaryOpIC::ToState(operand_type_); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 160 | } |
| 161 | |
| 162 | virtual void FinishCode(Code* code) { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 163 | code->set_unary_op_type(operand_type_); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 164 | } |
| 165 | }; |
| 166 | |
| 167 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 168 | class BinaryOpStub: public CodeStub { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 169 | public: |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 170 | BinaryOpStub(Token::Value op, OverwriteMode mode) |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 171 | : op_(op), |
| 172 | mode_(mode), |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 173 | operands_type_(BinaryOpIC::UNINITIALIZED), |
| 174 | result_type_(BinaryOpIC::UNINITIALIZED), |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 175 | name_(NULL) { |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 176 | use_sse3_ = CpuFeatures::IsSupported(SSE3); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 177 | ASSERT(OpBits::is_valid(Token::NUM_TOKENS)); |
| 178 | } |
| 179 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 180 | BinaryOpStub( |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 181 | int key, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 182 | BinaryOpIC::TypeInfo operands_type, |
| 183 | BinaryOpIC::TypeInfo result_type = BinaryOpIC::UNINITIALIZED) |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 184 | : op_(OpBits::decode(key)), |
| 185 | mode_(ModeBits::decode(key)), |
| 186 | use_sse3_(SSE3Bits::decode(key)), |
| 187 | operands_type_(operands_type), |
| 188 | result_type_(result_type), |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 189 | name_(NULL) { } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 190 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 191 | private: |
| 192 | enum SmiCodeGenerateHeapNumberResults { |
| 193 | ALLOW_HEAPNUMBER_RESULTS, |
| 194 | NO_HEAPNUMBER_RESULTS |
| 195 | }; |
| 196 | |
| 197 | Token::Value op_; |
| 198 | OverwriteMode mode_; |
| 199 | bool use_sse3_; |
| 200 | |
| 201 | // Operand type information determined at runtime. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 202 | BinaryOpIC::TypeInfo operands_type_; |
| 203 | BinaryOpIC::TypeInfo result_type_; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 204 | |
| 205 | char* name_; |
| 206 | |
| 207 | const char* GetName(); |
| 208 | |
| 209 | #ifdef DEBUG |
| 210 | void Print() { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 211 | PrintF("BinaryOpStub %d (op %s), " |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 212 | "(mode %d, runtime_type_info %s)\n", |
| 213 | MinorKey(), |
| 214 | Token::String(op_), |
| 215 | static_cast<int>(mode_), |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 216 | BinaryOpIC::GetName(operands_type_)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 217 | } |
| 218 | #endif |
| 219 | |
| 220 | // Minor key encoding in 16 bits RRRTTTSOOOOOOOMM. |
| 221 | class ModeBits: public BitField<OverwriteMode, 0, 2> {}; |
| 222 | class OpBits: public BitField<Token::Value, 2, 7> {}; |
| 223 | class SSE3Bits: public BitField<bool, 9, 1> {}; |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 224 | class OperandTypeInfoBits: public BitField<BinaryOpIC::TypeInfo, 10, 3> {}; |
| 225 | class ResultTypeInfoBits: public BitField<BinaryOpIC::TypeInfo, 13, 3> {}; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 226 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 227 | Major MajorKey() { return BinaryOp; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 228 | int MinorKey() { |
| 229 | return OpBits::encode(op_) |
| 230 | | ModeBits::encode(mode_) |
| 231 | | SSE3Bits::encode(use_sse3_) |
| 232 | | OperandTypeInfoBits::encode(operands_type_) |
| 233 | | ResultTypeInfoBits::encode(result_type_); |
| 234 | } |
| 235 | |
| 236 | void Generate(MacroAssembler* masm); |
| 237 | void GenerateGeneric(MacroAssembler* masm); |
| 238 | void GenerateSmiCode(MacroAssembler* masm, |
| 239 | Label* slow, |
| 240 | SmiCodeGenerateHeapNumberResults heapnumber_results); |
| 241 | void GenerateLoadArguments(MacroAssembler* masm); |
| 242 | void GenerateReturn(MacroAssembler* masm); |
| 243 | void GenerateUninitializedStub(MacroAssembler* masm); |
| 244 | void GenerateSmiStub(MacroAssembler* masm); |
| 245 | void GenerateInt32Stub(MacroAssembler* masm); |
| 246 | void GenerateHeapNumberStub(MacroAssembler* masm); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 247 | void GenerateOddballStub(MacroAssembler* masm); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 248 | void GenerateStringStub(MacroAssembler* masm); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 249 | void GenerateBothStringStub(MacroAssembler* masm); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 250 | void GenerateGenericStub(MacroAssembler* masm); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 251 | void GenerateAddStrings(MacroAssembler* masm); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 252 | |
| 253 | void GenerateHeapResultAllocation(MacroAssembler* masm, Label* alloc_failure); |
| 254 | void GenerateRegisterArgsPush(MacroAssembler* masm); |
| 255 | void GenerateTypeTransition(MacroAssembler* masm); |
| 256 | void GenerateTypeTransitionWithSavedArgs(MacroAssembler* masm); |
| 257 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 258 | virtual int GetCodeKind() { return Code::BINARY_OP_IC; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 259 | |
| 260 | virtual InlineCacheState GetICState() { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 261 | return BinaryOpIC::ToState(operands_type_); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 262 | } |
| 263 | |
| 264 | virtual void FinishCode(Code* code) { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 265 | code->set_binary_op_type(operands_type_); |
| 266 | code->set_binary_op_result_type(result_type_); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 267 | } |
| 268 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 269 | friend class CodeGenerator; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 270 | }; |
| 271 | |
| 272 | |
| 273 | class StringHelper : public AllStatic { |
| 274 | public: |
| 275 | // Generate code for copying characters using a simple loop. This should only |
| 276 | // be used in places where the number of characters is small and the |
| 277 | // additional setup and checking in GenerateCopyCharactersREP adds too much |
| 278 | // overhead. Copying of overlapping regions is not supported. |
| 279 | static void GenerateCopyCharacters(MacroAssembler* masm, |
| 280 | Register dest, |
| 281 | Register src, |
| 282 | Register count, |
| 283 | Register scratch, |
| 284 | bool ascii); |
| 285 | |
| 286 | // Generate code for copying characters using the rep movs instruction. |
| 287 | // Copies ecx characters from esi to edi. Copying of overlapping regions is |
| 288 | // not supported. |
| 289 | static void GenerateCopyCharactersREP(MacroAssembler* masm, |
| 290 | Register dest, // Must be edi. |
| 291 | Register src, // Must be esi. |
| 292 | Register count, // Must be ecx. |
| 293 | Register scratch, // Neither of above. |
| 294 | bool ascii); |
| 295 | |
kmillikin@chromium.org | 3cdd9e1 | 2010-09-06 11:39:48 +0000 | [diff] [blame] | 296 | // Probe the symbol table for a two character string. If the string |
| 297 | // requires non-standard hashing a jump to the label not_probed is |
| 298 | // performed and registers c1 and c2 are preserved. In all other |
| 299 | // cases they are clobbered. If the string is not found by probing a |
| 300 | // jump to the label not_found is performed. This jump does not |
| 301 | // guarantee that the string is not in the symbol table. If the |
| 302 | // string is found the code falls through with the string in |
| 303 | // register eax. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 304 | static void GenerateTwoCharacterSymbolTableProbe(MacroAssembler* masm, |
| 305 | Register c1, |
| 306 | Register c2, |
| 307 | Register scratch1, |
| 308 | Register scratch2, |
| 309 | Register scratch3, |
kmillikin@chromium.org | 3cdd9e1 | 2010-09-06 11:39:48 +0000 | [diff] [blame] | 310 | Label* not_probed, |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 311 | Label* not_found); |
| 312 | |
| 313 | // Generate string hash. |
| 314 | static void GenerateHashInit(MacroAssembler* masm, |
| 315 | Register hash, |
| 316 | Register character, |
| 317 | Register scratch); |
| 318 | static void GenerateHashAddCharacter(MacroAssembler* masm, |
| 319 | Register hash, |
| 320 | Register character, |
| 321 | Register scratch); |
| 322 | static void GenerateHashGetHash(MacroAssembler* masm, |
| 323 | Register hash, |
| 324 | Register scratch); |
| 325 | |
| 326 | private: |
| 327 | DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper); |
| 328 | }; |
| 329 | |
| 330 | |
| 331 | // Flag that indicates how to generate code for the stub StringAddStub. |
| 332 | enum StringAddFlags { |
| 333 | NO_STRING_ADD_FLAGS = 0, |
kmillikin@chromium.org | 3cdd9e1 | 2010-09-06 11:39:48 +0000 | [diff] [blame] | 334 | // Omit left string check in stub (left is definitely a string). |
| 335 | NO_STRING_CHECK_LEFT_IN_STUB = 1 << 0, |
| 336 | // Omit right string check in stub (right is definitely a string). |
| 337 | NO_STRING_CHECK_RIGHT_IN_STUB = 1 << 1, |
| 338 | // Omit both string checks in stub. |
| 339 | NO_STRING_CHECK_IN_STUB = |
| 340 | NO_STRING_CHECK_LEFT_IN_STUB | NO_STRING_CHECK_RIGHT_IN_STUB |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 341 | }; |
| 342 | |
| 343 | |
| 344 | class StringAddStub: public CodeStub { |
| 345 | public: |
kmillikin@chromium.org | 3cdd9e1 | 2010-09-06 11:39:48 +0000 | [diff] [blame] | 346 | explicit StringAddStub(StringAddFlags flags) : flags_(flags) {} |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 347 | |
| 348 | private: |
| 349 | Major MajorKey() { return StringAdd; } |
kmillikin@chromium.org | 3cdd9e1 | 2010-09-06 11:39:48 +0000 | [diff] [blame] | 350 | int MinorKey() { return flags_; } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 351 | |
| 352 | void Generate(MacroAssembler* masm); |
| 353 | |
kmillikin@chromium.org | 3cdd9e1 | 2010-09-06 11:39:48 +0000 | [diff] [blame] | 354 | void GenerateConvertArgument(MacroAssembler* masm, |
| 355 | int stack_offset, |
| 356 | Register arg, |
| 357 | Register scratch1, |
| 358 | Register scratch2, |
| 359 | Register scratch3, |
| 360 | Label* slow); |
| 361 | |
| 362 | const StringAddFlags flags_; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 363 | }; |
| 364 | |
| 365 | |
| 366 | class SubStringStub: public CodeStub { |
| 367 | public: |
| 368 | SubStringStub() {} |
| 369 | |
| 370 | private: |
| 371 | Major MajorKey() { return SubString; } |
| 372 | int MinorKey() { return 0; } |
| 373 | |
| 374 | void Generate(MacroAssembler* masm); |
| 375 | }; |
| 376 | |
| 377 | |
| 378 | class StringCompareStub: public CodeStub { |
| 379 | public: |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 380 | StringCompareStub() { } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 381 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 382 | // Compares two flat ASCII strings and returns result in eax. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 383 | static void GenerateCompareFlatAsciiStrings(MacroAssembler* masm, |
| 384 | Register left, |
| 385 | Register right, |
| 386 | Register scratch1, |
| 387 | Register scratch2, |
| 388 | Register scratch3); |
| 389 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 390 | // Compares two flat ASCII strings for equality and returns result |
| 391 | // in eax. |
| 392 | static void GenerateFlatAsciiStringEquals(MacroAssembler* masm, |
| 393 | Register left, |
| 394 | Register right, |
| 395 | Register scratch1, |
| 396 | Register scratch2); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 397 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 398 | private: |
| 399 | virtual Major MajorKey() { return StringCompare; } |
| 400 | virtual int MinorKey() { return 0; } |
| 401 | virtual void Generate(MacroAssembler* masm); |
| 402 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 403 | static void GenerateAsciiCharsCompareLoop( |
| 404 | MacroAssembler* masm, |
| 405 | Register left, |
| 406 | Register right, |
| 407 | Register length, |
| 408 | Register scratch, |
| 409 | Label* chars_not_equal, |
| 410 | Label::Distance chars_not_equal_near = Label::kFar); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 411 | }; |
| 412 | |
| 413 | |
| 414 | class NumberToStringStub: public CodeStub { |
| 415 | public: |
| 416 | NumberToStringStub() { } |
| 417 | |
| 418 | // Generate code to do a lookup in the number string cache. If the number in |
| 419 | // the register object is found in the cache the generated code falls through |
| 420 | // with the result in the result register. The object and the result register |
| 421 | // can be the same. If the number is not found in the cache the code jumps to |
| 422 | // the label not_found with only the content of register object unchanged. |
| 423 | static void GenerateLookupNumberStringCache(MacroAssembler* masm, |
| 424 | Register object, |
| 425 | Register result, |
| 426 | Register scratch1, |
| 427 | Register scratch2, |
| 428 | bool object_is_smi, |
| 429 | Label* not_found); |
| 430 | |
| 431 | private: |
| 432 | Major MajorKey() { return NumberToString; } |
| 433 | int MinorKey() { return 0; } |
| 434 | |
| 435 | void Generate(MacroAssembler* masm); |
| 436 | |
| 437 | const char* GetName() { return "NumberToStringStub"; } |
| 438 | |
| 439 | #ifdef DEBUG |
| 440 | void Print() { |
| 441 | PrintF("NumberToStringStub\n"); |
| 442 | } |
| 443 | #endif |
| 444 | }; |
| 445 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 446 | |
| 447 | class StringDictionaryLookupStub: public CodeStub { |
| 448 | public: |
| 449 | enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP }; |
| 450 | |
| 451 | StringDictionaryLookupStub(Register dictionary, |
| 452 | Register result, |
| 453 | Register index, |
| 454 | LookupMode mode) |
| 455 | : dictionary_(dictionary), result_(result), index_(index), mode_(mode) { } |
| 456 | |
| 457 | void Generate(MacroAssembler* masm); |
| 458 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 459 | MUST_USE_RESULT static MaybeObject* GenerateNegativeLookup( |
| 460 | MacroAssembler* masm, |
| 461 | Label* miss, |
| 462 | Label* done, |
| 463 | Register properties, |
| 464 | String* name, |
| 465 | Register r0); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 466 | |
| 467 | static void GeneratePositiveLookup(MacroAssembler* masm, |
| 468 | Label* miss, |
| 469 | Label* done, |
| 470 | Register elements, |
| 471 | Register name, |
| 472 | Register r0, |
| 473 | Register r1); |
| 474 | |
| 475 | private: |
| 476 | static const int kInlinedProbes = 4; |
| 477 | static const int kTotalProbes = 20; |
| 478 | |
| 479 | static const int kCapacityOffset = |
| 480 | StringDictionary::kHeaderSize + |
| 481 | StringDictionary::kCapacityIndex * kPointerSize; |
| 482 | |
| 483 | static const int kElementsStartOffset = |
| 484 | StringDictionary::kHeaderSize + |
| 485 | StringDictionary::kElementsStartIndex * kPointerSize; |
| 486 | |
| 487 | |
| 488 | #ifdef DEBUG |
| 489 | void Print() { |
| 490 | PrintF("StringDictionaryLookupStub\n"); |
| 491 | } |
| 492 | #endif |
| 493 | |
| 494 | Major MajorKey() { return StringDictionaryNegativeLookup; } |
| 495 | |
| 496 | int MinorKey() { |
| 497 | return DictionaryBits::encode(dictionary_.code()) | |
| 498 | ResultBits::encode(result_.code()) | |
| 499 | IndexBits::encode(index_.code()) | |
| 500 | LookupModeBits::encode(mode_); |
| 501 | } |
| 502 | |
| 503 | class DictionaryBits: public BitField<int, 0, 3> {}; |
| 504 | class ResultBits: public BitField<int, 3, 3> {}; |
| 505 | class IndexBits: public BitField<int, 6, 3> {}; |
| 506 | class LookupModeBits: public BitField<LookupMode, 9, 1> {}; |
| 507 | |
| 508 | Register dictionary_; |
| 509 | Register result_; |
| 510 | Register index_; |
| 511 | LookupMode mode_; |
| 512 | }; |
| 513 | |
| 514 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 515 | } } // namespace v8::internal |
| 516 | |
| 517 | #endif // V8_IA32_CODE_STUBS_IA32_H_ |