ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 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_CODE_STUBS_H_ |
| 29 | #define V8_CODE_STUBS_H_ |
| 30 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 31 | #include "allocation.h" |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 32 | #include "assembler.h" |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 33 | #include "globals.h" |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 34 | #include "codegen.h" |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 35 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 36 | namespace v8 { |
| 37 | namespace internal { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 38 | |
ricow@chromium.org | c54d365 | 2011-05-30 09:20:16 +0000 | [diff] [blame] | 39 | // List of code stubs used on all platforms. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 40 | #define CODE_STUB_LIST_ALL_PLATFORMS(V) \ |
| 41 | V(CallFunction) \ |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 42 | V(CallConstruct) \ |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 43 | V(UnaryOp) \ |
| 44 | V(BinaryOp) \ |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 45 | V(StringAdd) \ |
fschneider@chromium.org | 0c20e67 | 2010-01-14 15:28:53 +0000 | [diff] [blame] | 46 | V(SubString) \ |
| 47 | V(StringCompare) \ |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 48 | V(Compare) \ |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 49 | V(CompareIC) \ |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 50 | V(CompareNilIC) \ |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 51 | V(MathPow) \ |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 52 | V(StringLength) \ |
| 53 | V(FunctionPrototype) \ |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 54 | V(StoreArrayLength) \ |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 55 | V(RecordWrite) \ |
| 56 | V(StoreBufferOverflow) \ |
| 57 | V(RegExpExec) \ |
whesse@chromium.org | 871db8c | 2010-12-21 15:17:57 +0000 | [diff] [blame] | 58 | V(TranscendentalCache) \ |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 59 | V(Instanceof) \ |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 60 | V(ConvertToDouble) \ |
| 61 | V(WriteInt32ToHeapNumber) \ |
| 62 | V(StackCheck) \ |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 63 | V(Interrupt) \ |
sgjesse@chromium.org | 846fb74 | 2009-12-18 08:56:33 +0000 | [diff] [blame] | 64 | V(FastNewClosure) \ |
| 65 | V(FastNewContext) \ |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 66 | V(FastNewBlockContext) \ |
sgjesse@chromium.org | 846fb74 | 2009-12-18 08:56:33 +0000 | [diff] [blame] | 67 | V(FastCloneShallowArray) \ |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 68 | V(FastCloneShallowObject) \ |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 69 | V(ToBoolean) \ |
whesse@chromium.org | 7a392b3 | 2011-01-31 11:30:36 +0000 | [diff] [blame] | 70 | V(ToNumber) \ |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 71 | V(ArgumentsAccess) \ |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 72 | V(RegExpConstructResult) \ |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 73 | V(NumberToString) \ |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 74 | V(CEntry) \ |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 75 | V(JSEntry) \ |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 76 | V(KeyedLoadElement) \ |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 77 | V(ArrayNoArgumentConstructor) \ |
| 78 | V(ArraySingleArgumentConstructor) \ |
| 79 | V(ArrayNArgumentsConstructor) \ |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 80 | V(KeyedStoreElement) \ |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 81 | V(DebuggerStatement) \ |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 82 | V(NameDictionaryLookup) \ |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 83 | V(ElementsTransitionAndStore) \ |
danno@chromium.org | 94b0d6f | 2013-02-04 13:33:20 +0000 | [diff] [blame] | 84 | V(TransitionElementsKind) \ |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 85 | V(StoreArrayLiteralElement) \ |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 86 | V(StubFailureTrampoline) \ |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 87 | V(ArrayConstructor) \ |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 88 | V(ProfileEntryHook) \ |
| 89 | /* IC Handler stubs */ \ |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 90 | V(LoadField) \ |
| 91 | V(KeyedLoadField) |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 92 | |
| 93 | // List of code stubs only used on ARM platforms. |
| 94 | #ifdef V8_TARGET_ARCH_ARM |
| 95 | #define CODE_STUB_LIST_ARM(V) \ |
| 96 | V(GetProperty) \ |
| 97 | V(SetProperty) \ |
| 98 | V(InvokeBuiltin) \ |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 99 | V(RegExpCEntry) \ |
| 100 | V(DirectCEntry) |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 101 | #else |
| 102 | #define CODE_STUB_LIST_ARM(V) |
| 103 | #endif |
| 104 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 105 | // List of code stubs only used on MIPS platforms. |
| 106 | #ifdef V8_TARGET_ARCH_MIPS |
| 107 | #define CODE_STUB_LIST_MIPS(V) \ |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 108 | V(RegExpCEntry) \ |
| 109 | V(DirectCEntry) |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 110 | #else |
| 111 | #define CODE_STUB_LIST_MIPS(V) |
| 112 | #endif |
| 113 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 114 | // Combined list of code stubs. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 115 | #define CODE_STUB_LIST(V) \ |
| 116 | CODE_STUB_LIST_ALL_PLATFORMS(V) \ |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 117 | CODE_STUB_LIST_ARM(V) \ |
| 118 | CODE_STUB_LIST_MIPS(V) |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 119 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 120 | // Mode to overwrite BinaryExpression values. |
| 121 | enum OverwriteMode { NO_OVERWRITE, OVERWRITE_LEFT, OVERWRITE_RIGHT }; |
| 122 | enum UnaryOverwriteMode { UNARY_OVERWRITE, UNARY_NO_OVERWRITE }; |
| 123 | |
| 124 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 125 | // Stub is base classes of all stubs. |
| 126 | class CodeStub BASE_EMBEDDED { |
| 127 | public: |
| 128 | enum Major { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 129 | #define DEF_ENUM(name) name, |
| 130 | CODE_STUB_LIST(DEF_ENUM) |
| 131 | #undef DEF_ENUM |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 132 | NoCache, // marker for stubs that do custom caching |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 133 | NUMBER_OF_IDS |
| 134 | }; |
| 135 | |
| 136 | // Retrieve the code for the stub. Generate the code if needed. |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 137 | Handle<Code> GetCode(Isolate* isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 138 | |
| 139 | static Major MajorKeyFromKey(uint32_t key) { |
| 140 | return static_cast<Major>(MajorKeyBits::decode(key)); |
kmillikin@chromium.org | 3cdd9e1 | 2010-09-06 11:39:48 +0000 | [diff] [blame] | 141 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 142 | static int MinorKeyFromKey(uint32_t key) { |
| 143 | return MinorKeyBits::decode(key); |
kmillikin@chromium.org | 3cdd9e1 | 2010-09-06 11:39:48 +0000 | [diff] [blame] | 144 | } |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 145 | |
| 146 | // Gets the major key from a code object that is a code stub or binary op IC. |
| 147 | static Major GetMajorKey(Code* code_stub) { |
| 148 | return static_cast<Major>(code_stub->major_key()); |
| 149 | } |
| 150 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 151 | static const char* MajorName(Major major_key, bool allow_unknown_keys); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 152 | |
| 153 | virtual ~CodeStub() {} |
| 154 | |
svenpanne@chromium.org | 2bda543 | 2013-03-15 12:39:50 +0000 | [diff] [blame] | 155 | bool CompilingCallsToThisStubIsGCSafe(Isolate* isolate) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 156 | bool is_pregenerated = IsPregenerated(); |
| 157 | Code* code = NULL; |
svenpanne@chromium.org | 2bda543 | 2013-03-15 12:39:50 +0000 | [diff] [blame] | 158 | CHECK(!is_pregenerated || FindCodeInCache(&code, isolate)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 159 | return is_pregenerated; |
| 160 | } |
| 161 | |
| 162 | // See comment above, where Instanceof is defined. |
| 163 | virtual bool IsPregenerated() { return false; } |
| 164 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 165 | static void GenerateStubsAheadOfTime(Isolate* isolate); |
| 166 | static void GenerateFPStubs(Isolate* isolate); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 167 | |
| 168 | // Some stubs put untagged junk on the stack that cannot be scanned by the |
| 169 | // GC. This means that we must be statically sure that no GC can occur while |
| 170 | // they are running. If that is the case they should override this to return |
| 171 | // true, which will cause an assertion if we try to call something that can |
| 172 | // GC or if we try to put a stack frame on top of the junk, which would not |
| 173 | // result in a traversable stack. |
| 174 | virtual bool SometimesSetsUpAFrame() { return true; } |
| 175 | |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 176 | // Lookup the code in the (possibly custom) cache. |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 177 | bool FindCodeInCache(Code** code_out, Isolate* isolate); |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 178 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 179 | // Returns information for computing the number key. |
| 180 | virtual Major MajorKey() = 0; |
| 181 | virtual int MinorKey() = 0; |
| 182 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 183 | virtual InlineCacheState GetICState() { |
| 184 | return UNINITIALIZED; |
| 185 | } |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 186 | virtual Code::ExtraICState GetExtraICState() { |
| 187 | return Code::kNoExtraICState; |
| 188 | } |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 189 | virtual Code::StubType GetStubType() { |
| 190 | return Code::NORMAL; |
| 191 | } |
| 192 | virtual int GetStubFlags() { |
| 193 | return -1; |
| 194 | } |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 195 | |
| 196 | protected: |
| 197 | static bool CanUseFPRegisters(); |
| 198 | |
| 199 | // Generates the assembler code for the stub. |
| 200 | virtual Handle<Code> GenerateCode() = 0; |
| 201 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 202 | |
| 203 | // Returns whether the code generated for this stub needs to be allocated as |
| 204 | // a fixed (non-moveable) code object. |
| 205 | virtual bool NeedsImmovableCode() { return false; } |
| 206 | |
| 207 | private: |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 208 | // Perform bookkeeping required after code generation when stub code is |
| 209 | // initially generated. |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 210 | void RecordCodeGeneration(Code* code, Isolate* isolate); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 211 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 212 | // Finish the code object after it has been generated. |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 213 | virtual void FinishCode(Handle<Code> code) { } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 214 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 215 | // Activate newly generated stub. Is called after |
| 216 | // registering stub in the stub cache. |
| 217 | virtual void Activate(Code* code) { } |
| 218 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 219 | // BinaryOpStub needs to override this. |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 220 | virtual Code::Kind GetCodeKind() const; |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 221 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 222 | // Add the code to a specialized cache, specific to an individual |
| 223 | // stub type. Please note, this method must add the code object to a |
| 224 | // roots object, otherwise we will remove the code during GC. |
| 225 | virtual void AddToSpecialCache(Handle<Code> new_object) { } |
| 226 | |
| 227 | // Find code in a specialized cache, work is delegated to the specific stub. |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 228 | virtual bool FindCodeInSpecialCache(Code** code_out, Isolate* isolate) { |
| 229 | return false; |
| 230 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 231 | |
| 232 | // If a stub uses a special cache override this. |
| 233 | virtual bool UseSpecialCache() { return false; } |
| 234 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 235 | // Returns a name for logging/debugging purposes. |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 236 | SmartArrayPointer<const char> GetName(); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 237 | virtual void PrintName(StringStream* stream); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 238 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 239 | // Computes the key based on major and minor. |
| 240 | uint32_t GetKey() { |
| 241 | ASSERT(static_cast<int>(MajorKey()) < NUMBER_OF_IDS); |
| 242 | return MinorKeyBits::encode(MinorKey()) | |
| 243 | MajorKeyBits::encode(MajorKey()); |
| 244 | } |
| 245 | |
danno@chromium.org | 81cac2b | 2012-07-10 11:28:27 +0000 | [diff] [blame] | 246 | class MajorKeyBits: public BitField<uint32_t, 0, kStubMajorKeyBits> {}; |
| 247 | class MinorKeyBits: public BitField<uint32_t, |
| 248 | kStubMajorKeyBits, kStubMinorKeyBits> {}; // NOLINT |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 249 | |
| 250 | friend class BreakPointIterator; |
| 251 | }; |
| 252 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 253 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 254 | class PlatformCodeStub : public CodeStub { |
| 255 | public: |
| 256 | // Retrieve the code for the stub. Generate the code if needed. |
| 257 | virtual Handle<Code> GenerateCode(); |
| 258 | |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 259 | virtual Code::Kind GetCodeKind() const { return Code::STUB; } |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 260 | |
| 261 | protected: |
| 262 | // Generates the assembler code for the stub. |
| 263 | virtual void Generate(MacroAssembler* masm) = 0; |
| 264 | }; |
| 265 | |
| 266 | |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 267 | enum StubFunctionMode { NOT_JS_FUNCTION_STUB_MODE, JS_FUNCTION_STUB_MODE }; |
| 268 | |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 269 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 270 | struct CodeStubInterfaceDescriptor { |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 271 | CodeStubInterfaceDescriptor(); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 272 | int register_param_count_; |
mmassi@chromium.org | 2f0efde | 2013-02-06 14:12:58 +0000 | [diff] [blame] | 273 | const Register* stack_parameter_count_; |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 274 | // if hint_stack_parameter_count_ > 0, the code stub can optimize the |
| 275 | // return sequence. Default value is -1, which means it is ignored. |
| 276 | int hint_stack_parameter_count_; |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 277 | StubFunctionMode function_mode_; |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 278 | Register* register_params_; |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 279 | Address deoptimization_handler_; |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 280 | ExternalReference miss_handler_; |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 281 | |
| 282 | int environment_length() const { |
| 283 | if (stack_parameter_count_ != NULL) { |
| 284 | return register_param_count_ + 1; |
| 285 | } |
| 286 | return register_param_count_; |
| 287 | } |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 288 | |
| 289 | bool initialized() const { return register_param_count_ >= 0; } |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 290 | }; |
| 291 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 292 | // A helper to make up for the fact that type Register is not fully |
| 293 | // defined outside of the platform directories |
| 294 | #define DESCRIPTOR_GET_PARAMETER_REGISTER(descriptor, index) \ |
| 295 | ((index) == (descriptor)->register_param_count_) \ |
| 296 | ? *((descriptor)->stack_parameter_count_) \ |
| 297 | : (descriptor)->register_params_[(index)] |
| 298 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 299 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 300 | class HydrogenCodeStub : public CodeStub { |
| 301 | public: |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 302 | enum InitializationState { |
| 303 | CODE_STUB_IS_NOT_MISS, |
| 304 | CODE_STUB_IS_MISS |
| 305 | }; |
| 306 | |
| 307 | explicit HydrogenCodeStub(InitializationState state) { |
| 308 | is_miss_ = (state == CODE_STUB_IS_MISS); |
| 309 | } |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 310 | |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 311 | virtual Code::Kind GetCodeKind() const { return Code::STUB; } |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 312 | |
| 313 | CodeStubInterfaceDescriptor* GetInterfaceDescriptor(Isolate* isolate) { |
| 314 | return isolate->code_stub_interface_descriptor(MajorKey()); |
| 315 | } |
| 316 | |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 317 | bool IsMiss() { return is_miss_; } |
| 318 | |
| 319 | template<class SubClass> |
| 320 | static Handle<Code> GetUninitialized(Isolate* isolate) { |
| 321 | SubClass::GenerateAheadOfTime(isolate); |
| 322 | return SubClass().GetCode(isolate); |
| 323 | } |
| 324 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 325 | virtual void InitializeInterfaceDescriptor( |
| 326 | Isolate* isolate, |
| 327 | CodeStubInterfaceDescriptor* descriptor) = 0; |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 328 | |
| 329 | // Retrieve the code for the stub. Generate the code if needed. |
| 330 | virtual Handle<Code> GenerateCode() = 0; |
| 331 | |
| 332 | virtual int NotMissMinorKey() = 0; |
| 333 | |
| 334 | Handle<Code> GenerateLightweightMissCode(Isolate* isolate); |
| 335 | |
| 336 | private: |
| 337 | class MinorKeyBits: public BitField<int, 0, kStubMinorKeyBits - 1> {}; |
| 338 | class IsMissBits: public BitField<bool, kStubMinorKeyBits - 1, 1> {}; |
| 339 | |
| 340 | void GenerateLightweightMiss(MacroAssembler* masm); |
| 341 | virtual int MinorKey() { |
| 342 | return IsMissBits::encode(is_miss_) | |
| 343 | MinorKeyBits::encode(NotMissMinorKey()); |
| 344 | } |
| 345 | |
| 346 | bool is_miss_; |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 347 | }; |
| 348 | |
| 349 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 350 | // Helper interface to prepare to/restore after making runtime calls. |
| 351 | class RuntimeCallHelper { |
| 352 | public: |
| 353 | virtual ~RuntimeCallHelper() {} |
| 354 | |
| 355 | virtual void BeforeCall(MacroAssembler* masm) const = 0; |
| 356 | |
| 357 | virtual void AfterCall(MacroAssembler* masm) const = 0; |
| 358 | |
| 359 | protected: |
| 360 | RuntimeCallHelper() {} |
| 361 | |
| 362 | private: |
| 363 | DISALLOW_COPY_AND_ASSIGN(RuntimeCallHelper); |
| 364 | }; |
| 365 | |
| 366 | } } // namespace v8::internal |
| 367 | |
| 368 | #if V8_TARGET_ARCH_IA32 |
| 369 | #include "ia32/code-stubs-ia32.h" |
| 370 | #elif V8_TARGET_ARCH_X64 |
| 371 | #include "x64/code-stubs-x64.h" |
| 372 | #elif V8_TARGET_ARCH_ARM |
| 373 | #include "arm/code-stubs-arm.h" |
| 374 | #elif V8_TARGET_ARCH_MIPS |
| 375 | #include "mips/code-stubs-mips.h" |
| 376 | #else |
| 377 | #error Unsupported target architecture. |
| 378 | #endif |
| 379 | |
| 380 | namespace v8 { |
| 381 | namespace internal { |
| 382 | |
| 383 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 384 | // RuntimeCallHelper implementation used in stubs: enters/leaves a |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 385 | // newly created internal frame before/after the runtime call. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 386 | class StubRuntimeCallHelper : public RuntimeCallHelper { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 387 | public: |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 388 | StubRuntimeCallHelper() {} |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 389 | |
| 390 | virtual void BeforeCall(MacroAssembler* masm) const; |
| 391 | |
| 392 | virtual void AfterCall(MacroAssembler* masm) const; |
| 393 | }; |
| 394 | |
| 395 | |
| 396 | // Trivial RuntimeCallHelper implementation. |
| 397 | class NopRuntimeCallHelper : public RuntimeCallHelper { |
| 398 | public: |
| 399 | NopRuntimeCallHelper() {} |
| 400 | |
| 401 | virtual void BeforeCall(MacroAssembler* masm) const {} |
| 402 | |
| 403 | virtual void AfterCall(MacroAssembler* masm) const {} |
| 404 | }; |
| 405 | |
| 406 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 407 | class StackCheckStub : public PlatformCodeStub { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 408 | public: |
| 409 | StackCheckStub() { } |
| 410 | |
| 411 | void Generate(MacroAssembler* masm); |
| 412 | |
| 413 | private: |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 414 | Major MajorKey() { return StackCheck; } |
| 415 | int MinorKey() { return 0; } |
| 416 | }; |
| 417 | |
| 418 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 419 | class InterruptStub : public PlatformCodeStub { |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 420 | public: |
| 421 | InterruptStub() { } |
| 422 | |
| 423 | void Generate(MacroAssembler* masm); |
| 424 | |
| 425 | private: |
| 426 | Major MajorKey() { return Interrupt; } |
| 427 | int MinorKey() { return 0; } |
| 428 | }; |
| 429 | |
| 430 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 431 | class ToNumberStub: public PlatformCodeStub { |
whesse@chromium.org | 7a392b3 | 2011-01-31 11:30:36 +0000 | [diff] [blame] | 432 | public: |
| 433 | ToNumberStub() { } |
| 434 | |
| 435 | void Generate(MacroAssembler* masm); |
| 436 | |
| 437 | private: |
| 438 | Major MajorKey() { return ToNumber; } |
| 439 | int MinorKey() { return 0; } |
whesse@chromium.org | 7a392b3 | 2011-01-31 11:30:36 +0000 | [diff] [blame] | 440 | }; |
| 441 | |
| 442 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 443 | class FastNewClosureStub : public PlatformCodeStub { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 444 | public: |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 445 | explicit FastNewClosureStub(LanguageMode language_mode, bool is_generator) |
| 446 | : language_mode_(language_mode), |
| 447 | is_generator_(is_generator) { } |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 448 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 449 | void Generate(MacroAssembler* masm); |
| 450 | |
| 451 | private: |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 452 | class StrictModeBits: public BitField<bool, 0, 1> {}; |
| 453 | class IsGeneratorBits: public BitField<bool, 1, 1> {}; |
| 454 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 455 | Major MajorKey() { return FastNewClosure; } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 456 | int MinorKey() { |
| 457 | return StrictModeBits::encode(language_mode_ != CLASSIC_MODE) | |
| 458 | IsGeneratorBits::encode(is_generator_); |
| 459 | } |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 460 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 461 | LanguageMode language_mode_; |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 462 | bool is_generator_; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 463 | }; |
| 464 | |
| 465 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 466 | class FastNewContextStub : public PlatformCodeStub { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 467 | public: |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 468 | static const int kMaximumSlots = 64; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 469 | |
| 470 | explicit FastNewContextStub(int slots) : slots_(slots) { |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 471 | ASSERT(slots_ > 0 && slots_ <= kMaximumSlots); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 472 | } |
| 473 | |
| 474 | void Generate(MacroAssembler* masm); |
| 475 | |
| 476 | private: |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 477 | int slots_; |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 478 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 479 | Major MajorKey() { return FastNewContext; } |
| 480 | int MinorKey() { return slots_; } |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 481 | }; |
| 482 | |
| 483 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 484 | class FastNewBlockContextStub : public PlatformCodeStub { |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 485 | public: |
| 486 | static const int kMaximumSlots = 64; |
| 487 | |
| 488 | explicit FastNewBlockContextStub(int slots) : slots_(slots) { |
| 489 | ASSERT(slots_ > 0 && slots_ <= kMaximumSlots); |
| 490 | } |
| 491 | |
| 492 | void Generate(MacroAssembler* masm); |
| 493 | |
| 494 | private: |
| 495 | int slots_; |
| 496 | |
| 497 | Major MajorKey() { return FastNewBlockContext; } |
| 498 | int MinorKey() { return slots_; } |
| 499 | }; |
| 500 | |
| 501 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 502 | class FastCloneShallowArrayStub : public HydrogenCodeStub { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 503 | public: |
| 504 | // Maximum length of copied elements array. |
| 505 | static const int kMaximumClonedLength = 8; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 506 | enum Mode { |
| 507 | CLONE_ELEMENTS, |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 508 | CLONE_DOUBLE_ELEMENTS, |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 509 | COPY_ON_WRITE_ELEMENTS, |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 510 | CLONE_ANY_ELEMENTS, |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 511 | LAST_CLONE_MODE = CLONE_ANY_ELEMENTS |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 512 | }; |
| 513 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 514 | static const int kFastCloneModeCount = LAST_CLONE_MODE + 1; |
| 515 | |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 516 | FastCloneShallowArrayStub(Mode mode, |
| 517 | AllocationSiteMode allocation_site_mode, |
| 518 | int length) |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 519 | : HydrogenCodeStub(CODE_STUB_IS_NOT_MISS), |
| 520 | mode_(mode), |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 521 | allocation_site_mode_(allocation_site_mode), |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 522 | length_((mode == COPY_ON_WRITE_ELEMENTS) ? 0 : length) { |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 523 | ASSERT_GE(length_, 0); |
| 524 | ASSERT_LE(length_, kMaximumClonedLength); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 525 | } |
| 526 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 527 | Mode mode() const { return mode_; } |
| 528 | int length() const { return length_; } |
| 529 | AllocationSiteMode allocation_site_mode() const { |
| 530 | return allocation_site_mode_; |
| 531 | } |
| 532 | |
| 533 | ElementsKind ComputeElementsKind() const { |
| 534 | switch (mode()) { |
| 535 | case CLONE_ELEMENTS: |
| 536 | case COPY_ON_WRITE_ELEMENTS: |
| 537 | return FAST_ELEMENTS; |
| 538 | case CLONE_DOUBLE_ELEMENTS: |
| 539 | return FAST_DOUBLE_ELEMENTS; |
| 540 | case CLONE_ANY_ELEMENTS: |
| 541 | /*fall-through*/; |
| 542 | } |
| 543 | UNREACHABLE(); |
| 544 | return LAST_ELEMENTS_KIND; |
| 545 | } |
| 546 | |
| 547 | virtual Handle<Code> GenerateCode(); |
| 548 | |
| 549 | virtual void InitializeInterfaceDescriptor( |
| 550 | Isolate* isolate, |
| 551 | CodeStubInterfaceDescriptor* descriptor); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 552 | |
| 553 | private: |
| 554 | Mode mode_; |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 555 | AllocationSiteMode allocation_site_mode_; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 556 | int length_; |
| 557 | |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 558 | class AllocationSiteModeBits: public BitField<AllocationSiteMode, 0, 1> {}; |
| 559 | class ModeBits: public BitField<Mode, 1, 4> {}; |
| 560 | class LengthBits: public BitField<int, 5, 4> {}; |
| 561 | // Ensure data fits within available bits. |
| 562 | STATIC_ASSERT(LAST_ALLOCATION_SITE_MODE == 1); |
| 563 | STATIC_ASSERT(kFastCloneModeCount < 16); |
| 564 | STATIC_ASSERT(kMaximumClonedLength < 16); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 565 | Major MajorKey() { return FastCloneShallowArray; } |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 566 | int NotMissMinorKey() { |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 567 | return AllocationSiteModeBits::encode(allocation_site_mode_) |
| 568 | | ModeBits::encode(mode_) |
| 569 | | LengthBits::encode(length_); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 570 | } |
| 571 | }; |
| 572 | |
| 573 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 574 | class FastCloneShallowObjectStub : public HydrogenCodeStub { |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 575 | public: |
| 576 | // Maximum number of properties in copied object. |
| 577 | static const int kMaximumClonedProperties = 6; |
| 578 | |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 579 | explicit FastCloneShallowObjectStub(int length) |
| 580 | : HydrogenCodeStub(CODE_STUB_IS_NOT_MISS), |
| 581 | length_(length) { |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 582 | ASSERT_GE(length_, 0); |
| 583 | ASSERT_LE(length_, kMaximumClonedProperties); |
| 584 | } |
| 585 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 586 | int length() const { return length_; } |
| 587 | |
| 588 | virtual Handle<Code> GenerateCode(); |
| 589 | |
| 590 | virtual void InitializeInterfaceDescriptor( |
| 591 | Isolate* isolate, |
| 592 | CodeStubInterfaceDescriptor* descriptor); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 593 | |
| 594 | private: |
| 595 | int length_; |
| 596 | |
| 597 | Major MajorKey() { return FastCloneShallowObject; } |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 598 | int NotMissMinorKey() { return length_; } |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 599 | |
| 600 | DISALLOW_COPY_AND_ASSIGN(FastCloneShallowObjectStub); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 601 | }; |
| 602 | |
| 603 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 604 | class InstanceofStub: public PlatformCodeStub { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 605 | public: |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 606 | enum Flags { |
| 607 | kNoFlags = 0, |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 608 | kArgsInRegisters = 1 << 0, |
| 609 | kCallSiteInlineCheck = 1 << 1, |
| 610 | kReturnTrueFalseObject = 1 << 2 |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 611 | }; |
| 612 | |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 613 | explicit InstanceofStub(Flags flags) : flags_(flags) { } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 614 | |
| 615 | static Register left(); |
| 616 | static Register right(); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 617 | |
| 618 | void Generate(MacroAssembler* masm); |
| 619 | |
| 620 | private: |
| 621 | Major MajorKey() { return Instanceof; } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 622 | int MinorKey() { return static_cast<int>(flags_); } |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 623 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 624 | bool HasArgsInRegisters() const { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 625 | return (flags_ & kArgsInRegisters) != 0; |
| 626 | } |
| 627 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 628 | bool HasCallSiteInlineCheck() const { |
| 629 | return (flags_ & kCallSiteInlineCheck) != 0; |
| 630 | } |
| 631 | |
| 632 | bool ReturnTrueFalseObject() const { |
| 633 | return (flags_ & kReturnTrueFalseObject) != 0; |
| 634 | } |
| 635 | |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 636 | virtual void PrintName(StringStream* stream); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 637 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 638 | Flags flags_; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 639 | }; |
| 640 | |
| 641 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 642 | class ArrayConstructorStub: public PlatformCodeStub { |
| 643 | public: |
| 644 | enum ArgumentCountKey { ANY, NONE, ONE, MORE_THAN_ONE }; |
| 645 | ArrayConstructorStub(Isolate* isolate, int argument_count); |
| 646 | explicit ArrayConstructorStub(Isolate* isolate); |
| 647 | |
| 648 | void Generate(MacroAssembler* masm); |
| 649 | |
| 650 | private: |
| 651 | virtual CodeStub::Major MajorKey() { return ArrayConstructor; } |
| 652 | virtual int MinorKey() { return argument_count_; } |
| 653 | |
| 654 | ArgumentCountKey argument_count_; |
| 655 | }; |
| 656 | |
| 657 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 658 | class MathPowStub: public PlatformCodeStub { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 659 | public: |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 660 | enum ExponentType { INTEGER, DOUBLE, TAGGED, ON_STACK}; |
| 661 | |
| 662 | explicit MathPowStub(ExponentType exponent_type) |
| 663 | : exponent_type_(exponent_type) { } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 664 | virtual void Generate(MacroAssembler* masm); |
| 665 | |
| 666 | private: |
| 667 | virtual CodeStub::Major MajorKey() { return MathPow; } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 668 | virtual int MinorKey() { return exponent_type_; } |
| 669 | |
| 670 | ExponentType exponent_type_; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 671 | }; |
| 672 | |
| 673 | |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 674 | class ICStub: public PlatformCodeStub { |
| 675 | public: |
| 676 | explicit ICStub(Code::Kind kind) : kind_(kind) { } |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 677 | virtual Code::Kind GetCodeKind() const { return kind_; } |
mmassi@chromium.org | 2f0efde | 2013-02-06 14:12:58 +0000 | [diff] [blame] | 678 | virtual InlineCacheState GetICState() { return MONOMORPHIC; } |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 679 | |
| 680 | bool Describes(Code* code) { |
| 681 | return GetMajorKey(code) == MajorKey() && code->stub_info() == MinorKey(); |
| 682 | } |
| 683 | |
| 684 | protected: |
| 685 | class KindBits: public BitField<Code::Kind, 0, 4> {}; |
| 686 | virtual void FinishCode(Handle<Code> code) { |
| 687 | code->set_stub_info(MinorKey()); |
| 688 | } |
| 689 | Code::Kind kind() { return kind_; } |
| 690 | |
| 691 | virtual int MinorKey() { |
| 692 | return KindBits::encode(kind_); |
| 693 | } |
| 694 | |
| 695 | private: |
| 696 | Code::Kind kind_; |
| 697 | }; |
| 698 | |
| 699 | |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 700 | class FunctionPrototypeStub: public ICStub { |
| 701 | public: |
| 702 | explicit FunctionPrototypeStub(Code::Kind kind) : ICStub(kind) { } |
| 703 | virtual void Generate(MacroAssembler* masm); |
| 704 | |
| 705 | private: |
| 706 | virtual CodeStub::Major MajorKey() { return FunctionPrototype; } |
| 707 | }; |
| 708 | |
| 709 | |
| 710 | class StringLengthStub: public ICStub { |
| 711 | public: |
| 712 | StringLengthStub(Code::Kind kind, bool support_wrapper) |
| 713 | : ICStub(kind), support_wrapper_(support_wrapper) { } |
| 714 | virtual void Generate(MacroAssembler* masm); |
| 715 | |
| 716 | private: |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 717 | STATIC_ASSERT(KindBits::kSize == 4); |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 718 | class WrapperModeBits: public BitField<bool, 4, 1> {}; |
| 719 | virtual CodeStub::Major MajorKey() { return StringLength; } |
| 720 | virtual int MinorKey() { |
| 721 | return KindBits::encode(kind()) | WrapperModeBits::encode(support_wrapper_); |
| 722 | } |
| 723 | |
| 724 | bool support_wrapper_; |
| 725 | }; |
| 726 | |
| 727 | |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 728 | class StoreICStub: public ICStub { |
| 729 | public: |
| 730 | StoreICStub(Code::Kind kind, StrictModeFlag strict_mode) |
| 731 | : ICStub(kind), strict_mode_(strict_mode) { } |
| 732 | |
| 733 | protected: |
| 734 | virtual Code::ExtraICState GetExtraICState() { |
| 735 | return strict_mode_; |
| 736 | } |
| 737 | |
| 738 | private: |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 739 | STATIC_ASSERT(KindBits::kSize == 4); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 740 | class StrictModeBits: public BitField<bool, 4, 1> {}; |
| 741 | virtual int MinorKey() { |
| 742 | return KindBits::encode(kind()) | StrictModeBits::encode(strict_mode_); |
| 743 | } |
| 744 | |
| 745 | StrictModeFlag strict_mode_; |
| 746 | }; |
| 747 | |
| 748 | |
| 749 | class StoreArrayLengthStub: public StoreICStub { |
| 750 | public: |
| 751 | explicit StoreArrayLengthStub(Code::Kind kind, StrictModeFlag strict_mode) |
| 752 | : StoreICStub(kind, strict_mode) { } |
| 753 | virtual void Generate(MacroAssembler* masm); |
| 754 | |
| 755 | private: |
| 756 | virtual CodeStub::Major MajorKey() { return StoreArrayLength; } |
| 757 | }; |
| 758 | |
| 759 | |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 760 | class HICStub: public HydrogenCodeStub { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 761 | public: |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 762 | virtual Code::Kind GetCodeKind() const { return kind(); } |
| 763 | virtual InlineCacheState GetICState() { return MONOMORPHIC; } |
| 764 | |
| 765 | protected: |
| 766 | HICStub() : HydrogenCodeStub(CODE_STUB_IS_NOT_MISS) { } |
| 767 | class KindBits: public BitField<Code::Kind, 0, 4> {}; |
| 768 | virtual Code::Kind kind() const = 0; |
| 769 | }; |
| 770 | |
| 771 | |
| 772 | class HandlerStub: public HICStub { |
| 773 | public: |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 774 | virtual Code::Kind GetCodeKind() const { return Code::STUB; } |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 775 | virtual int GetStubFlags() { return kind(); } |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 776 | |
| 777 | protected: |
| 778 | HandlerStub() : HICStub() { } |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 779 | }; |
| 780 | |
| 781 | |
| 782 | class LoadFieldStub: public HandlerStub { |
| 783 | public: |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 784 | LoadFieldStub(bool inobject, int index, Representation representation) |
| 785 | : HandlerStub() { |
| 786 | Initialize(Code::LOAD_IC, inobject, index, representation); |
| 787 | } |
| 788 | |
| 789 | virtual Handle<Code> GenerateCode(); |
| 790 | |
| 791 | virtual void InitializeInterfaceDescriptor( |
| 792 | Isolate* isolate, |
| 793 | CodeStubInterfaceDescriptor* descriptor); |
| 794 | |
| 795 | Representation representation() { |
| 796 | if (unboxed_double()) return Representation::Double(); |
| 797 | return Representation::Tagged(); |
| 798 | } |
| 799 | |
| 800 | virtual Code::Kind kind() const { |
| 801 | return KindBits::decode(bit_field_); |
| 802 | } |
| 803 | |
| 804 | bool is_inobject() { |
| 805 | return InobjectBits::decode(bit_field_); |
| 806 | } |
| 807 | |
| 808 | int offset() { |
| 809 | int index = IndexBits::decode(bit_field_); |
| 810 | int offset = index * kPointerSize; |
| 811 | if (is_inobject()) return offset; |
| 812 | return FixedArray::kHeaderSize + offset; |
| 813 | } |
| 814 | |
| 815 | bool unboxed_double() { |
| 816 | return UnboxedDoubleBits::decode(bit_field_); |
| 817 | } |
| 818 | |
| 819 | virtual Code::StubType GetStubType() { return Code::FIELD; } |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 820 | |
| 821 | protected: |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 822 | LoadFieldStub() : HandlerStub() { } |
| 823 | |
| 824 | void Initialize(Code::Kind kind, |
| 825 | bool inobject, |
| 826 | int index, |
| 827 | Representation representation) { |
| 828 | bool unboxed_double = FLAG_track_double_fields && representation.IsDouble(); |
| 829 | bit_field_ = KindBits::encode(kind) |
| 830 | | InobjectBits::encode(inobject) |
| 831 | | IndexBits::encode(index) |
| 832 | | UnboxedDoubleBits::encode(unboxed_double); |
| 833 | } |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 834 | |
| 835 | private: |
| 836 | STATIC_ASSERT(KindBits::kSize == 4); |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 837 | class InobjectBits: public BitField<bool, 4, 1> {}; |
| 838 | class IndexBits: public BitField<int, 5, 11> {}; |
| 839 | class UnboxedDoubleBits: public BitField<bool, 16, 1> {}; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 840 | virtual CodeStub::Major MajorKey() { return LoadField; } |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 841 | virtual int NotMissMinorKey() { return bit_field_; } |
| 842 | |
| 843 | int bit_field_; |
| 844 | }; |
| 845 | |
| 846 | |
| 847 | class KeyedLoadFieldStub: public LoadFieldStub { |
| 848 | public: |
| 849 | KeyedLoadFieldStub(bool inobject, int index, Representation representation) |
| 850 | : LoadFieldStub() { |
| 851 | Initialize(Code::KEYED_LOAD_IC, inobject, index, representation); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 852 | } |
| 853 | |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 854 | virtual void InitializeInterfaceDescriptor( |
| 855 | Isolate* isolate, |
| 856 | CodeStubInterfaceDescriptor* descriptor); |
| 857 | |
| 858 | virtual Handle<Code> GenerateCode(); |
| 859 | |
| 860 | private: |
| 861 | virtual CodeStub::Major MajorKey() { return KeyedLoadField; } |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 862 | }; |
| 863 | |
| 864 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 865 | class BinaryOpStub: public PlatformCodeStub { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 866 | public: |
| 867 | BinaryOpStub(Token::Value op, OverwriteMode mode) |
| 868 | : op_(op), |
| 869 | mode_(mode), |
| 870 | platform_specific_bit_(false), |
| 871 | left_type_(BinaryOpIC::UNINITIALIZED), |
| 872 | right_type_(BinaryOpIC::UNINITIALIZED), |
| 873 | result_type_(BinaryOpIC::UNINITIALIZED) { |
| 874 | Initialize(); |
| 875 | ASSERT(OpBits::is_valid(Token::NUM_TOKENS)); |
| 876 | } |
| 877 | |
| 878 | BinaryOpStub( |
| 879 | int key, |
| 880 | BinaryOpIC::TypeInfo left_type, |
| 881 | BinaryOpIC::TypeInfo right_type, |
| 882 | BinaryOpIC::TypeInfo result_type = BinaryOpIC::UNINITIALIZED) |
| 883 | : op_(OpBits::decode(key)), |
| 884 | mode_(ModeBits::decode(key)), |
| 885 | platform_specific_bit_(PlatformSpecificBits::decode(key)), |
| 886 | left_type_(left_type), |
| 887 | right_type_(right_type), |
| 888 | result_type_(result_type) { } |
| 889 | |
| 890 | static void decode_types_from_minor_key(int minor_key, |
| 891 | BinaryOpIC::TypeInfo* left_type, |
| 892 | BinaryOpIC::TypeInfo* right_type, |
| 893 | BinaryOpIC::TypeInfo* result_type) { |
| 894 | *left_type = |
| 895 | static_cast<BinaryOpIC::TypeInfo>(LeftTypeBits::decode(minor_key)); |
| 896 | *right_type = |
| 897 | static_cast<BinaryOpIC::TypeInfo>(RightTypeBits::decode(minor_key)); |
| 898 | *result_type = |
| 899 | static_cast<BinaryOpIC::TypeInfo>(ResultTypeBits::decode(minor_key)); |
| 900 | } |
| 901 | |
| 902 | static Token::Value decode_op_from_minor_key(int minor_key) { |
| 903 | return static_cast<Token::Value>(OpBits::decode(minor_key)); |
| 904 | } |
| 905 | |
| 906 | enum SmiCodeGenerateHeapNumberResults { |
| 907 | ALLOW_HEAPNUMBER_RESULTS, |
| 908 | NO_HEAPNUMBER_RESULTS |
| 909 | }; |
| 910 | |
| 911 | private: |
| 912 | Token::Value op_; |
| 913 | OverwriteMode mode_; |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 914 | bool platform_specific_bit_; // Indicates SSE3 on IA32. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 915 | |
| 916 | // Operand type information determined at runtime. |
| 917 | BinaryOpIC::TypeInfo left_type_; |
| 918 | BinaryOpIC::TypeInfo right_type_; |
| 919 | BinaryOpIC::TypeInfo result_type_; |
| 920 | |
| 921 | virtual void PrintName(StringStream* stream); |
| 922 | |
| 923 | // Minor key encoding in 19 bits TTTRRRLLLSOOOOOOOMM. |
| 924 | class ModeBits: public BitField<OverwriteMode, 0, 2> {}; |
| 925 | class OpBits: public BitField<Token::Value, 2, 7> {}; |
| 926 | class PlatformSpecificBits: public BitField<bool, 9, 1> {}; |
| 927 | class LeftTypeBits: public BitField<BinaryOpIC::TypeInfo, 10, 3> {}; |
| 928 | class RightTypeBits: public BitField<BinaryOpIC::TypeInfo, 13, 3> {}; |
| 929 | class ResultTypeBits: public BitField<BinaryOpIC::TypeInfo, 16, 3> {}; |
| 930 | |
| 931 | Major MajorKey() { return BinaryOp; } |
| 932 | int MinorKey() { |
| 933 | return OpBits::encode(op_) |
| 934 | | ModeBits::encode(mode_) |
| 935 | | PlatformSpecificBits::encode(platform_specific_bit_) |
| 936 | | LeftTypeBits::encode(left_type_) |
| 937 | | RightTypeBits::encode(right_type_) |
| 938 | | ResultTypeBits::encode(result_type_); |
| 939 | } |
| 940 | |
| 941 | |
| 942 | // Platform-independent implementation. |
| 943 | void Generate(MacroAssembler* masm); |
| 944 | void GenerateCallRuntime(MacroAssembler* masm); |
| 945 | |
| 946 | // Platform-independent signature, platform-specific implementation. |
| 947 | void Initialize(); |
| 948 | void GenerateAddStrings(MacroAssembler* masm); |
| 949 | void GenerateBothStringStub(MacroAssembler* masm); |
| 950 | void GenerateGeneric(MacroAssembler* masm); |
| 951 | void GenerateGenericStub(MacroAssembler* masm); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 952 | void GenerateNumberStub(MacroAssembler* masm); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 953 | void GenerateInt32Stub(MacroAssembler* masm); |
| 954 | void GenerateLoadArguments(MacroAssembler* masm); |
| 955 | void GenerateOddballStub(MacroAssembler* masm); |
| 956 | void GenerateRegisterArgsPush(MacroAssembler* masm); |
| 957 | void GenerateReturn(MacroAssembler* masm); |
| 958 | void GenerateSmiStub(MacroAssembler* masm); |
| 959 | void GenerateStringStub(MacroAssembler* masm); |
| 960 | void GenerateTypeTransition(MacroAssembler* masm); |
| 961 | void GenerateTypeTransitionWithSavedArgs(MacroAssembler* masm); |
| 962 | void GenerateUninitializedStub(MacroAssembler* masm); |
| 963 | |
| 964 | // Entirely platform-specific methods are defined as static helper |
| 965 | // functions in the <arch>/code-stubs-<arch>.cc files. |
| 966 | |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 967 | virtual Code::Kind GetCodeKind() const { return Code::BINARY_OP_IC; } |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 968 | |
| 969 | virtual InlineCacheState GetICState() { |
| 970 | return BinaryOpIC::ToState(Max(left_type_, right_type_)); |
| 971 | } |
| 972 | |
| 973 | virtual void FinishCode(Handle<Code> code) { |
| 974 | code->set_stub_info(MinorKey()); |
| 975 | } |
| 976 | |
| 977 | friend class CodeGenerator; |
| 978 | }; |
| 979 | |
| 980 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 981 | class ICCompareStub: public PlatformCodeStub { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 982 | public: |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 983 | ICCompareStub(Token::Value op, |
| 984 | CompareIC::State left, |
| 985 | CompareIC::State right, |
| 986 | CompareIC::State handler) |
| 987 | : op_(op), |
| 988 | left_(left), |
| 989 | right_(right), |
| 990 | state_(handler) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 991 | ASSERT(Token::IsCompareOp(op)); |
| 992 | } |
| 993 | |
| 994 | virtual void Generate(MacroAssembler* masm); |
| 995 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 996 | void set_known_map(Handle<Map> map) { known_map_ = map; } |
| 997 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 998 | static void DecodeMinorKey(int minor_key, |
| 999 | CompareIC::State* left_state, |
| 1000 | CompareIC::State* right_state, |
| 1001 | CompareIC::State* handler_state, |
| 1002 | Token::Value* op); |
| 1003 | |
| 1004 | static CompareIC::State CompareState(int minor_key) { |
| 1005 | return static_cast<CompareIC::State>(HandlerStateField::decode(minor_key)); |
| 1006 | } |
| 1007 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1008 | private: |
| 1009 | class OpField: public BitField<int, 0, 3> { }; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1010 | class LeftStateField: public BitField<int, 3, 4> { }; |
| 1011 | class RightStateField: public BitField<int, 7, 4> { }; |
| 1012 | class HandlerStateField: public BitField<int, 11, 4> { }; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1013 | |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 1014 | virtual void FinishCode(Handle<Code> code) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1015 | code->set_stub_info(MinorKey()); |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 1016 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1017 | |
| 1018 | virtual CodeStub::Major MajorKey() { return CompareIC; } |
| 1019 | virtual int MinorKey(); |
| 1020 | |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 1021 | virtual Code::Kind GetCodeKind() const { return Code::COMPARE_IC; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1022 | |
| 1023 | void GenerateSmis(MacroAssembler* masm); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1024 | void GenerateNumbers(MacroAssembler* masm); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1025 | void GenerateInternalizedStrings(MacroAssembler* masm); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 1026 | void GenerateStrings(MacroAssembler* masm); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1027 | void GenerateUniqueNames(MacroAssembler* masm); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1028 | void GenerateObjects(MacroAssembler* masm); |
| 1029 | void GenerateMiss(MacroAssembler* masm); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1030 | void GenerateKnownObjects(MacroAssembler* masm); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1031 | void GenerateGeneric(MacroAssembler* masm); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1032 | |
| 1033 | bool strict() const { return op_ == Token::EQ_STRICT; } |
| 1034 | Condition GetCondition() const { return CompareIC::ComputeCondition(op_); } |
| 1035 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1036 | virtual void AddToSpecialCache(Handle<Code> new_object); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1037 | virtual bool FindCodeInSpecialCache(Code** code_out, Isolate* isolate); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1038 | virtual bool UseSpecialCache() { return state_ == CompareIC::KNOWN_OBJECT; } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1039 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1040 | Token::Value op_; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1041 | CompareIC::State left_; |
| 1042 | CompareIC::State right_; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1043 | CompareIC::State state_; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1044 | Handle<Map> known_map_; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1045 | }; |
| 1046 | |
| 1047 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 1048 | class CompareNilICStub : public HydrogenCodeStub { |
| 1049 | public: |
| 1050 | enum Types { |
| 1051 | kCompareAgainstNull = 1 << 0, |
| 1052 | kCompareAgainstUndefined = 1 << 1, |
| 1053 | kCompareAgainstMonomorphicMap = 1 << 2, |
| 1054 | kCompareAgainstUndetectable = 1 << 3, |
| 1055 | kFullCompare = kCompareAgainstNull | kCompareAgainstUndefined | |
| 1056 | kCompareAgainstUndetectable |
| 1057 | }; |
| 1058 | |
| 1059 | CompareNilICStub(EqualityKind kind, NilValue nil, Types types) |
| 1060 | : HydrogenCodeStub(CODE_STUB_IS_NOT_MISS), bit_field_(0) { |
| 1061 | bit_field_ = EqualityKindField::encode(kind) | |
| 1062 | NilValueField::encode(nil) | |
| 1063 | TypesField::encode(types); |
| 1064 | } |
| 1065 | |
| 1066 | virtual InlineCacheState GetICState() { |
| 1067 | Types types = GetTypes(); |
| 1068 | if (types == kFullCompare) { |
| 1069 | return MEGAMORPHIC; |
| 1070 | } else if ((types & kCompareAgainstMonomorphicMap) != 0) { |
| 1071 | return MONOMORPHIC; |
| 1072 | } else { |
| 1073 | return PREMONOMORPHIC; |
| 1074 | } |
| 1075 | } |
| 1076 | |
| 1077 | virtual Code::Kind GetCodeKind() const { return Code::COMPARE_NIL_IC; } |
| 1078 | |
| 1079 | Handle<Code> GenerateCode(); |
| 1080 | |
| 1081 | static Handle<Code> GetUninitialized(Isolate* isolate, |
| 1082 | EqualityKind kind, |
| 1083 | NilValue nil) { |
| 1084 | return CompareNilICStub(kind, nil).GetCode(isolate); |
| 1085 | } |
| 1086 | |
| 1087 | virtual void InitializeInterfaceDescriptor( |
| 1088 | Isolate* isolate, |
| 1089 | CodeStubInterfaceDescriptor* descriptor); |
| 1090 | |
| 1091 | static void InitializeForIsolate(Isolate* isolate) { |
| 1092 | CompareNilICStub compare_stub(kStrictEquality, kNullValue); |
| 1093 | compare_stub.InitializeInterfaceDescriptor( |
| 1094 | isolate, |
| 1095 | isolate->code_stub_interface_descriptor(CodeStub::CompareNilIC)); |
| 1096 | } |
| 1097 | |
| 1098 | virtual Code::ExtraICState GetExtraICState() { |
| 1099 | return bit_field_; |
| 1100 | } |
| 1101 | |
| 1102 | EqualityKind GetKind() { return EqualityKindField::decode(bit_field_); } |
| 1103 | NilValue GetNilValue() { return NilValueField::decode(bit_field_); } |
| 1104 | Types GetTypes() { return TypesField::decode(bit_field_); } |
| 1105 | |
| 1106 | static Types TypesFromExtraICState( |
| 1107 | Code::ExtraICState state) { |
| 1108 | return TypesField::decode(state); |
| 1109 | } |
| 1110 | static EqualityKind EqualityKindFromExtraICState( |
| 1111 | Code::ExtraICState state) { |
| 1112 | return EqualityKindField::decode(state); |
| 1113 | } |
| 1114 | static NilValue NilValueFromExtraICState(Code::ExtraICState state) { |
| 1115 | return NilValueField::decode(state); |
| 1116 | } |
| 1117 | |
| 1118 | static Types GetPatchedICFlags(Code::ExtraICState extra_ic_state, |
| 1119 | Handle<Object> object, |
| 1120 | bool* already_monomorphic); |
| 1121 | |
| 1122 | private: |
| 1123 | friend class CompareNilIC; |
| 1124 | |
| 1125 | class EqualityKindField : public BitField<EqualityKind, 0, 1> {}; |
| 1126 | class NilValueField : public BitField<NilValue, 1, 1> {}; |
| 1127 | class TypesField : public BitField<Types, 3, 4> {}; |
| 1128 | |
| 1129 | CompareNilICStub(EqualityKind kind, NilValue nil) |
| 1130 | : HydrogenCodeStub(CODE_STUB_IS_MISS), bit_field_(0) { |
| 1131 | bit_field_ = EqualityKindField::encode(kind) | |
| 1132 | NilValueField::encode(nil); |
| 1133 | } |
| 1134 | |
| 1135 | virtual CodeStub::Major MajorKey() { return CompareNilIC; } |
| 1136 | virtual int NotMissMinorKey() { return bit_field_; } |
| 1137 | |
| 1138 | int bit_field_; |
| 1139 | |
| 1140 | DISALLOW_COPY_AND_ASSIGN(CompareNilICStub); |
| 1141 | }; |
| 1142 | |
| 1143 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1144 | class CEntryStub : public PlatformCodeStub { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1145 | public: |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1146 | explicit CEntryStub(int result_size, |
| 1147 | SaveFPRegsMode save_doubles = kDontSaveFPRegs) |
| 1148 | : result_size_(result_size), save_doubles_(save_doubles) { } |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1149 | |
| 1150 | void Generate(MacroAssembler* masm); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1151 | |
| 1152 | // The version of this stub that doesn't save doubles is generated ahead of |
| 1153 | // time, so it's OK to call it from other stubs that can't cope with GC during |
| 1154 | // their code generation. On machines that always have gp registers (x64) we |
| 1155 | // can generate both variants ahead of time. |
| 1156 | virtual bool IsPregenerated(); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1157 | static void GenerateAheadOfTime(Isolate* isolate); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1158 | |
| 1159 | private: |
| 1160 | void GenerateCore(MacroAssembler* masm, |
| 1161 | Label* throw_normal_exception, |
| 1162 | Label* throw_termination_exception, |
| 1163 | Label* throw_out_of_memory_exception, |
| 1164 | bool do_gc, |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 1165 | bool always_allocate_scope); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1166 | |
| 1167 | // Number of pointers/values returned. |
| 1168 | const int result_size_; |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1169 | SaveFPRegsMode save_doubles_; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1170 | |
| 1171 | Major MajorKey() { return CEntry; } |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1172 | int MinorKey(); |
| 1173 | |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 1174 | bool NeedsImmovableCode(); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1175 | }; |
| 1176 | |
| 1177 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1178 | class JSEntryStub : public PlatformCodeStub { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1179 | public: |
| 1180 | JSEntryStub() { } |
| 1181 | |
| 1182 | void Generate(MacroAssembler* masm) { GenerateBody(masm, false); } |
| 1183 | |
| 1184 | protected: |
| 1185 | void GenerateBody(MacroAssembler* masm, bool is_construct); |
| 1186 | |
| 1187 | private: |
| 1188 | Major MajorKey() { return JSEntry; } |
| 1189 | int MinorKey() { return 0; } |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 1190 | |
| 1191 | virtual void FinishCode(Handle<Code> code); |
| 1192 | |
| 1193 | int handler_offset_; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1194 | }; |
| 1195 | |
| 1196 | |
| 1197 | class JSConstructEntryStub : public JSEntryStub { |
| 1198 | public: |
| 1199 | JSConstructEntryStub() { } |
| 1200 | |
| 1201 | void Generate(MacroAssembler* masm) { GenerateBody(masm, true); } |
| 1202 | |
| 1203 | private: |
| 1204 | int MinorKey() { return 1; } |
| 1205 | |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1206 | virtual void PrintName(StringStream* stream) { |
| 1207 | stream->Add("JSConstructEntryStub"); |
| 1208 | } |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1209 | }; |
| 1210 | |
| 1211 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1212 | class ArgumentsAccessStub: public PlatformCodeStub { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1213 | public: |
| 1214 | enum Type { |
| 1215 | READ_ELEMENT, |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1216 | NEW_NON_STRICT_FAST, |
| 1217 | NEW_NON_STRICT_SLOW, |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1218 | NEW_STRICT |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1219 | }; |
| 1220 | |
| 1221 | explicit ArgumentsAccessStub(Type type) : type_(type) { } |
| 1222 | |
| 1223 | private: |
| 1224 | Type type_; |
| 1225 | |
| 1226 | Major MajorKey() { return ArgumentsAccess; } |
| 1227 | int MinorKey() { return type_; } |
| 1228 | |
| 1229 | void Generate(MacroAssembler* masm); |
| 1230 | void GenerateReadElement(MacroAssembler* masm); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1231 | void GenerateNewStrict(MacroAssembler* masm); |
| 1232 | void GenerateNewNonStrictFast(MacroAssembler* masm); |
| 1233 | void GenerateNewNonStrictSlow(MacroAssembler* masm); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1234 | |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1235 | virtual void PrintName(StringStream* stream); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1236 | }; |
| 1237 | |
| 1238 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1239 | class RegExpExecStub: public PlatformCodeStub { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1240 | public: |
| 1241 | RegExpExecStub() { } |
| 1242 | |
| 1243 | private: |
| 1244 | Major MajorKey() { return RegExpExec; } |
| 1245 | int MinorKey() { return 0; } |
| 1246 | |
| 1247 | void Generate(MacroAssembler* masm); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1248 | }; |
| 1249 | |
| 1250 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1251 | class RegExpConstructResultStub: public PlatformCodeStub { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1252 | public: |
| 1253 | RegExpConstructResultStub() { } |
| 1254 | |
| 1255 | private: |
| 1256 | Major MajorKey() { return RegExpConstructResult; } |
| 1257 | int MinorKey() { return 0; } |
| 1258 | |
| 1259 | void Generate(MacroAssembler* masm); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1260 | }; |
| 1261 | |
| 1262 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1263 | class CallFunctionStub: public PlatformCodeStub { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1264 | public: |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 1265 | CallFunctionStub(int argc, CallFunctionFlags flags) |
| 1266 | : argc_(argc), flags_(flags) { } |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1267 | |
| 1268 | void Generate(MacroAssembler* masm); |
| 1269 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 1270 | virtual void FinishCode(Handle<Code> code) { |
| 1271 | code->set_has_function_cache(RecordCallTarget()); |
| 1272 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1273 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 1274 | static int ExtractArgcFromMinorKey(int minor_key) { |
| 1275 | return ArgcBits::decode(minor_key); |
| 1276 | } |
| 1277 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1278 | private: |
| 1279 | int argc_; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1280 | CallFunctionFlags flags_; |
| 1281 | |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1282 | virtual void PrintName(StringStream* stream); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1283 | |
| 1284 | // Minor key encoding in 32 bits with Bitfield <Type, shift, size>. |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1285 | class FlagBits: public BitField<CallFunctionFlags, 0, 2> {}; |
| 1286 | class ArgcBits: public BitField<unsigned, 2, 32 - 2> {}; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1287 | |
| 1288 | Major MajorKey() { return CallFunction; } |
| 1289 | int MinorKey() { |
| 1290 | // Encode the parameters in a unique 32 bit value. |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 1291 | return FlagBits::encode(flags_) | ArgcBits::encode(argc_); |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1292 | } |
| 1293 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1294 | bool ReceiverMightBeImplicit() { |
| 1295 | return (flags_ & RECEIVER_MIGHT_BE_IMPLICIT) != 0; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1296 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1297 | |
| 1298 | bool RecordCallTarget() { |
| 1299 | return (flags_ & RECORD_CALL_TARGET) != 0; |
| 1300 | } |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1301 | }; |
| 1302 | |
| 1303 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1304 | class CallConstructStub: public PlatformCodeStub { |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 1305 | public: |
| 1306 | explicit CallConstructStub(CallFunctionFlags flags) : flags_(flags) {} |
| 1307 | |
| 1308 | void Generate(MacroAssembler* masm); |
| 1309 | |
| 1310 | virtual void FinishCode(Handle<Code> code) { |
| 1311 | code->set_has_function_cache(RecordCallTarget()); |
| 1312 | } |
| 1313 | |
| 1314 | private: |
| 1315 | CallFunctionFlags flags_; |
| 1316 | |
| 1317 | virtual void PrintName(StringStream* stream); |
| 1318 | |
| 1319 | Major MajorKey() { return CallConstruct; } |
| 1320 | int MinorKey() { return flags_; } |
| 1321 | |
| 1322 | bool RecordCallTarget() { |
| 1323 | return (flags_ & RECORD_CALL_TARGET) != 0; |
| 1324 | } |
| 1325 | }; |
| 1326 | |
| 1327 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1328 | enum StringIndexFlags { |
| 1329 | // Accepts smis or heap numbers. |
| 1330 | STRING_INDEX_IS_NUMBER, |
| 1331 | |
| 1332 | // Accepts smis or heap numbers that are valid array indices |
| 1333 | // (ECMA-262 15.4). Invalid indices are reported as being out of |
| 1334 | // range. |
| 1335 | STRING_INDEX_IS_ARRAY_INDEX |
| 1336 | }; |
| 1337 | |
| 1338 | |
| 1339 | // Generates code implementing String.prototype.charCodeAt. |
| 1340 | // |
| 1341 | // Only supports the case when the receiver is a string and the index |
| 1342 | // is a number (smi or heap number) that is a valid index into the |
| 1343 | // string. Additional index constraints are specified by the |
| 1344 | // flags. Otherwise, bails out to the provided labels. |
| 1345 | // |
| 1346 | // Register usage: |object| may be changed to another string in a way |
| 1347 | // that doesn't affect charCodeAt/charAt semantics, |index| is |
| 1348 | // preserved, |scratch| and |result| are clobbered. |
| 1349 | class StringCharCodeAtGenerator { |
| 1350 | public: |
| 1351 | StringCharCodeAtGenerator(Register object, |
| 1352 | Register index, |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1353 | Register result, |
| 1354 | Label* receiver_not_string, |
| 1355 | Label* index_not_number, |
| 1356 | Label* index_out_of_range, |
| 1357 | StringIndexFlags index_flags) |
| 1358 | : object_(object), |
| 1359 | index_(index), |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1360 | result_(result), |
| 1361 | receiver_not_string_(receiver_not_string), |
| 1362 | index_not_number_(index_not_number), |
| 1363 | index_out_of_range_(index_out_of_range), |
| 1364 | index_flags_(index_flags) { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1365 | ASSERT(!result_.is(object_)); |
| 1366 | ASSERT(!result_.is(index_)); |
| 1367 | } |
| 1368 | |
| 1369 | // Generates the fast case code. On the fallthrough path |result| |
| 1370 | // register contains the result. |
| 1371 | void GenerateFast(MacroAssembler* masm); |
| 1372 | |
| 1373 | // Generates the slow case code. Must not be naturally |
| 1374 | // reachable. Expected to be put after a ret instruction (e.g., in |
| 1375 | // deferred code). Always jumps back to the fast case. |
| 1376 | void GenerateSlow(MacroAssembler* masm, |
| 1377 | const RuntimeCallHelper& call_helper); |
| 1378 | |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 1379 | // Skip handling slow case and directly jump to bailout. |
| 1380 | void SkipSlow(MacroAssembler* masm, Label* bailout) { |
| 1381 | masm->bind(&index_not_smi_); |
| 1382 | masm->bind(&call_runtime_); |
| 1383 | masm->jmp(bailout); |
| 1384 | } |
| 1385 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1386 | private: |
| 1387 | Register object_; |
| 1388 | Register index_; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1389 | Register result_; |
| 1390 | |
| 1391 | Label* receiver_not_string_; |
| 1392 | Label* index_not_number_; |
| 1393 | Label* index_out_of_range_; |
| 1394 | |
| 1395 | StringIndexFlags index_flags_; |
| 1396 | |
| 1397 | Label call_runtime_; |
| 1398 | Label index_not_smi_; |
| 1399 | Label got_smi_index_; |
| 1400 | Label exit_; |
| 1401 | |
| 1402 | DISALLOW_COPY_AND_ASSIGN(StringCharCodeAtGenerator); |
| 1403 | }; |
| 1404 | |
| 1405 | |
| 1406 | // Generates code for creating a one-char string from a char code. |
| 1407 | class StringCharFromCodeGenerator { |
| 1408 | public: |
| 1409 | StringCharFromCodeGenerator(Register code, |
| 1410 | Register result) |
| 1411 | : code_(code), |
| 1412 | result_(result) { |
| 1413 | ASSERT(!code_.is(result_)); |
| 1414 | } |
| 1415 | |
| 1416 | // Generates the fast case code. On the fallthrough path |result| |
| 1417 | // register contains the result. |
| 1418 | void GenerateFast(MacroAssembler* masm); |
| 1419 | |
| 1420 | // Generates the slow case code. Must not be naturally |
| 1421 | // reachable. Expected to be put after a ret instruction (e.g., in |
| 1422 | // deferred code). Always jumps back to the fast case. |
| 1423 | void GenerateSlow(MacroAssembler* masm, |
| 1424 | const RuntimeCallHelper& call_helper); |
| 1425 | |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 1426 | // Skip handling slow case and directly jump to bailout. |
| 1427 | void SkipSlow(MacroAssembler* masm, Label* bailout) { |
| 1428 | masm->bind(&slow_case_); |
| 1429 | masm->jmp(bailout); |
| 1430 | } |
| 1431 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1432 | private: |
| 1433 | Register code_; |
| 1434 | Register result_; |
| 1435 | |
| 1436 | Label slow_case_; |
| 1437 | Label exit_; |
| 1438 | |
| 1439 | DISALLOW_COPY_AND_ASSIGN(StringCharFromCodeGenerator); |
| 1440 | }; |
| 1441 | |
| 1442 | |
| 1443 | // Generates code implementing String.prototype.charAt. |
| 1444 | // |
| 1445 | // Only supports the case when the receiver is a string and the index |
| 1446 | // is a number (smi or heap number) that is a valid index into the |
| 1447 | // string. Additional index constraints are specified by the |
| 1448 | // flags. Otherwise, bails out to the provided labels. |
| 1449 | // |
| 1450 | // Register usage: |object| may be changed to another string in a way |
| 1451 | // that doesn't affect charCodeAt/charAt semantics, |index| is |
| 1452 | // preserved, |scratch1|, |scratch2|, and |result| are clobbered. |
| 1453 | class StringCharAtGenerator { |
| 1454 | public: |
| 1455 | StringCharAtGenerator(Register object, |
| 1456 | Register index, |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 1457 | Register scratch, |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1458 | Register result, |
| 1459 | Label* receiver_not_string, |
| 1460 | Label* index_not_number, |
| 1461 | Label* index_out_of_range, |
| 1462 | StringIndexFlags index_flags) |
| 1463 | : char_code_at_generator_(object, |
| 1464 | index, |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 1465 | scratch, |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1466 | receiver_not_string, |
| 1467 | index_not_number, |
| 1468 | index_out_of_range, |
| 1469 | index_flags), |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 1470 | char_from_code_generator_(scratch, result) {} |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1471 | |
| 1472 | // Generates the fast case code. On the fallthrough path |result| |
| 1473 | // register contains the result. |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 1474 | void GenerateFast(MacroAssembler* masm) { |
| 1475 | char_code_at_generator_.GenerateFast(masm); |
| 1476 | char_from_code_generator_.GenerateFast(masm); |
| 1477 | } |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1478 | |
| 1479 | // Generates the slow case code. Must not be naturally |
| 1480 | // reachable. Expected to be put after a ret instruction (e.g., in |
| 1481 | // deferred code). Always jumps back to the fast case. |
| 1482 | void GenerateSlow(MacroAssembler* masm, |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 1483 | const RuntimeCallHelper& call_helper) { |
| 1484 | char_code_at_generator_.GenerateSlow(masm, call_helper); |
| 1485 | char_from_code_generator_.GenerateSlow(masm, call_helper); |
| 1486 | } |
| 1487 | |
| 1488 | // Skip handling slow case and directly jump to bailout. |
| 1489 | void SkipSlow(MacroAssembler* masm, Label* bailout) { |
| 1490 | char_code_at_generator_.SkipSlow(masm, bailout); |
| 1491 | char_from_code_generator_.SkipSlow(masm, bailout); |
| 1492 | } |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1493 | |
| 1494 | private: |
| 1495 | StringCharCodeAtGenerator char_code_at_generator_; |
| 1496 | StringCharFromCodeGenerator char_from_code_generator_; |
| 1497 | |
| 1498 | DISALLOW_COPY_AND_ASSIGN(StringCharAtGenerator); |
| 1499 | }; |
| 1500 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 1501 | |
| 1502 | class AllowStubCallsScope { |
| 1503 | public: |
| 1504 | AllowStubCallsScope(MacroAssembler* masm, bool allow) |
| 1505 | : masm_(masm), previous_allow_(masm->allow_stub_calls()) { |
| 1506 | masm_->set_allow_stub_calls(allow); |
| 1507 | } |
| 1508 | ~AllowStubCallsScope() { |
| 1509 | masm_->set_allow_stub_calls(previous_allow_); |
| 1510 | } |
| 1511 | |
| 1512 | private: |
| 1513 | MacroAssembler* masm_; |
| 1514 | bool previous_allow_; |
| 1515 | |
| 1516 | DISALLOW_COPY_AND_ASSIGN(AllowStubCallsScope); |
| 1517 | }; |
| 1518 | |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1519 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1520 | class KeyedLoadDictionaryElementStub : public PlatformCodeStub { |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1521 | public: |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1522 | KeyedLoadDictionaryElementStub() {} |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1523 | |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1524 | void Generate(MacroAssembler* masm); |
| 1525 | |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 1526 | private: |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1527 | Major MajorKey() { return KeyedLoadElement; } |
| 1528 | int MinorKey() { return DICTIONARY_ELEMENTS; } |
| 1529 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1530 | DISALLOW_COPY_AND_ASSIGN(KeyedLoadDictionaryElementStub); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1531 | }; |
| 1532 | |
| 1533 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1534 | class KeyedLoadFastElementStub : public HydrogenCodeStub { |
| 1535 | public: |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1536 | KeyedLoadFastElementStub(bool is_js_array, ElementsKind elements_kind) |
| 1537 | : HydrogenCodeStub(CODE_STUB_IS_NOT_MISS) { |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1538 | bit_field_ = ElementsKindBits::encode(elements_kind) | |
| 1539 | IsJSArrayBits::encode(is_js_array); |
| 1540 | } |
| 1541 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1542 | bool is_js_array() const { |
| 1543 | return IsJSArrayBits::decode(bit_field_); |
| 1544 | } |
| 1545 | |
| 1546 | ElementsKind elements_kind() const { |
| 1547 | return ElementsKindBits::decode(bit_field_); |
| 1548 | } |
| 1549 | |
| 1550 | virtual Handle<Code> GenerateCode(); |
| 1551 | |
| 1552 | virtual void InitializeInterfaceDescriptor( |
| 1553 | Isolate* isolate, |
| 1554 | CodeStubInterfaceDescriptor* descriptor); |
| 1555 | |
| 1556 | private: |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1557 | class ElementsKindBits: public BitField<ElementsKind, 0, 8> {}; |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1558 | class IsJSArrayBits: public BitField<bool, 8, 1> {}; |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1559 | uint32_t bit_field_; |
| 1560 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 1561 | Major MajorKey() { return KeyedLoadElement; } |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1562 | int NotMissMinorKey() { return bit_field_; } |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 1563 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1564 | DISALLOW_COPY_AND_ASSIGN(KeyedLoadFastElementStub); |
| 1565 | }; |
| 1566 | |
| 1567 | |
jkummerow@chromium.org | 7bd87f0 | 2013-03-20 18:06:29 +0000 | [diff] [blame] | 1568 | class KeyedStoreFastElementStub : public HydrogenCodeStub { |
| 1569 | public: |
| 1570 | KeyedStoreFastElementStub(bool is_js_array, |
| 1571 | ElementsKind elements_kind, |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1572 | KeyedAccessStoreMode mode) |
| 1573 | : HydrogenCodeStub(CODE_STUB_IS_NOT_MISS) { |
jkummerow@chromium.org | 7bd87f0 | 2013-03-20 18:06:29 +0000 | [diff] [blame] | 1574 | bit_field_ = ElementsKindBits::encode(elements_kind) | |
| 1575 | IsJSArrayBits::encode(is_js_array) | |
| 1576 | StoreModeBits::encode(mode); |
| 1577 | } |
| 1578 | |
jkummerow@chromium.org | 7bd87f0 | 2013-03-20 18:06:29 +0000 | [diff] [blame] | 1579 | bool is_js_array() const { |
| 1580 | return IsJSArrayBits::decode(bit_field_); |
| 1581 | } |
| 1582 | |
| 1583 | ElementsKind elements_kind() const { |
| 1584 | return ElementsKindBits::decode(bit_field_); |
| 1585 | } |
| 1586 | |
| 1587 | KeyedAccessStoreMode store_mode() const { |
| 1588 | return StoreModeBits::decode(bit_field_); |
| 1589 | } |
| 1590 | |
| 1591 | virtual Handle<Code> GenerateCode(); |
| 1592 | |
| 1593 | virtual void InitializeInterfaceDescriptor( |
| 1594 | Isolate* isolate, |
| 1595 | CodeStubInterfaceDescriptor* descriptor); |
| 1596 | |
| 1597 | private: |
| 1598 | class ElementsKindBits: public BitField<ElementsKind, 0, 8> {}; |
| 1599 | class StoreModeBits: public BitField<KeyedAccessStoreMode, 8, 4> {}; |
| 1600 | class IsJSArrayBits: public BitField<bool, 12, 1> {}; |
| 1601 | uint32_t bit_field_; |
| 1602 | |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1603 | Major MajorKey() { return KeyedStoreElement; } |
| 1604 | int NotMissMinorKey() { return bit_field_; } |
| 1605 | |
jkummerow@chromium.org | 7bd87f0 | 2013-03-20 18:06:29 +0000 | [diff] [blame] | 1606 | DISALLOW_COPY_AND_ASSIGN(KeyedStoreFastElementStub); |
| 1607 | }; |
| 1608 | |
| 1609 | |
danno@chromium.org | 94b0d6f | 2013-02-04 13:33:20 +0000 | [diff] [blame] | 1610 | class TransitionElementsKindStub : public HydrogenCodeStub { |
| 1611 | public: |
| 1612 | TransitionElementsKindStub(ElementsKind from_kind, |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1613 | ElementsKind to_kind) |
| 1614 | : HydrogenCodeStub(CODE_STUB_IS_NOT_MISS) { |
danno@chromium.org | 94b0d6f | 2013-02-04 13:33:20 +0000 | [diff] [blame] | 1615 | bit_field_ = FromKindBits::encode(from_kind) | |
| 1616 | ToKindBits::encode(to_kind); |
| 1617 | } |
| 1618 | |
danno@chromium.org | 94b0d6f | 2013-02-04 13:33:20 +0000 | [diff] [blame] | 1619 | ElementsKind from_kind() const { |
| 1620 | return FromKindBits::decode(bit_field_); |
| 1621 | } |
| 1622 | |
| 1623 | ElementsKind to_kind() const { |
| 1624 | return ToKindBits::decode(bit_field_); |
| 1625 | } |
| 1626 | |
| 1627 | virtual Handle<Code> GenerateCode(); |
| 1628 | |
| 1629 | virtual void InitializeInterfaceDescriptor( |
| 1630 | Isolate* isolate, |
| 1631 | CodeStubInterfaceDescriptor* descriptor); |
| 1632 | |
| 1633 | private: |
| 1634 | class FromKindBits: public BitField<ElementsKind, 8, 8> {}; |
| 1635 | class ToKindBits: public BitField<ElementsKind, 0, 8> {}; |
| 1636 | uint32_t bit_field_; |
| 1637 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 1638 | Major MajorKey() { return TransitionElementsKind; } |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1639 | int NotMissMinorKey() { return bit_field_; } |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 1640 | |
danno@chromium.org | 94b0d6f | 2013-02-04 13:33:20 +0000 | [diff] [blame] | 1641 | DISALLOW_COPY_AND_ASSIGN(TransitionElementsKindStub); |
| 1642 | }; |
| 1643 | |
| 1644 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 1645 | class ArrayConstructorStubBase : public HydrogenCodeStub { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1646 | public: |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 1647 | ArrayConstructorStubBase(ElementsKind kind, AllocationSiteMode mode) |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1648 | : HydrogenCodeStub(CODE_STUB_IS_NOT_MISS) { |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 1649 | bit_field_ = ElementsKindBits::encode(kind) | |
| 1650 | AllocationSiteModeBits::encode(mode == TRACK_ALLOCATION_SITE); |
| 1651 | } |
| 1652 | |
| 1653 | ElementsKind elements_kind() const { |
| 1654 | return ElementsKindBits::decode(bit_field_); |
| 1655 | } |
| 1656 | |
| 1657 | AllocationSiteMode mode() const { |
| 1658 | return AllocationSiteModeBits::decode(bit_field_) |
| 1659 | ? TRACK_ALLOCATION_SITE |
| 1660 | : DONT_TRACK_ALLOCATION_SITE; |
| 1661 | } |
| 1662 | |
| 1663 | virtual bool IsPregenerated() { return true; } |
| 1664 | static void GenerateStubsAheadOfTime(Isolate* isolate); |
| 1665 | static void InstallDescriptors(Isolate* isolate); |
| 1666 | |
| 1667 | // Parameters accessed via CodeStubGraphBuilder::GetParameter() |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 1668 | static const int kConstructor = 0; |
| 1669 | static const int kPropertyCell = 1; |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 1670 | |
| 1671 | private: |
| 1672 | int NotMissMinorKey() { return bit_field_; } |
| 1673 | |
| 1674 | class ElementsKindBits: public BitField<ElementsKind, 0, 8> {}; |
| 1675 | class AllocationSiteModeBits: public BitField<bool, 8, 1> {}; |
| 1676 | uint32_t bit_field_; |
| 1677 | |
| 1678 | DISALLOW_COPY_AND_ASSIGN(ArrayConstructorStubBase); |
| 1679 | }; |
| 1680 | |
| 1681 | |
| 1682 | class ArrayNoArgumentConstructorStub : public ArrayConstructorStubBase { |
| 1683 | public: |
| 1684 | ArrayNoArgumentConstructorStub( |
| 1685 | ElementsKind kind, |
| 1686 | AllocationSiteMode mode = TRACK_ALLOCATION_SITE) |
| 1687 | : ArrayConstructorStubBase(kind, mode) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1688 | } |
| 1689 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1690 | virtual Handle<Code> GenerateCode(); |
| 1691 | |
| 1692 | virtual void InitializeInterfaceDescriptor( |
| 1693 | Isolate* isolate, |
| 1694 | CodeStubInterfaceDescriptor* descriptor); |
| 1695 | |
| 1696 | private: |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1697 | Major MajorKey() { return ArrayNoArgumentConstructor; } |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1698 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1699 | DISALLOW_COPY_AND_ASSIGN(ArrayNoArgumentConstructorStub); |
| 1700 | }; |
| 1701 | |
| 1702 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 1703 | class ArraySingleArgumentConstructorStub : public ArrayConstructorStubBase { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1704 | public: |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 1705 | ArraySingleArgumentConstructorStub( |
| 1706 | ElementsKind kind, |
| 1707 | AllocationSiteMode mode = TRACK_ALLOCATION_SITE) |
| 1708 | : ArrayConstructorStubBase(kind, mode) { |
| 1709 | } |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1710 | |
| 1711 | virtual Handle<Code> GenerateCode(); |
| 1712 | |
| 1713 | virtual void InitializeInterfaceDescriptor( |
| 1714 | Isolate* isolate, |
| 1715 | CodeStubInterfaceDescriptor* descriptor); |
| 1716 | |
| 1717 | private: |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1718 | Major MajorKey() { return ArraySingleArgumentConstructor; } |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1719 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1720 | DISALLOW_COPY_AND_ASSIGN(ArraySingleArgumentConstructorStub); |
| 1721 | }; |
| 1722 | |
| 1723 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 1724 | class ArrayNArgumentsConstructorStub : public ArrayConstructorStubBase { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1725 | public: |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 1726 | ArrayNArgumentsConstructorStub( |
| 1727 | ElementsKind kind, |
| 1728 | AllocationSiteMode mode = TRACK_ALLOCATION_SITE) : |
| 1729 | ArrayConstructorStubBase(kind, mode) { |
| 1730 | } |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1731 | |
| 1732 | virtual Handle<Code> GenerateCode(); |
| 1733 | |
| 1734 | virtual void InitializeInterfaceDescriptor( |
| 1735 | Isolate* isolate, |
| 1736 | CodeStubInterfaceDescriptor* descriptor); |
| 1737 | |
| 1738 | private: |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1739 | Major MajorKey() { return ArrayNArgumentsConstructor; } |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1740 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1741 | DISALLOW_COPY_AND_ASSIGN(ArrayNArgumentsConstructorStub); |
| 1742 | }; |
| 1743 | |
| 1744 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1745 | class KeyedStoreElementStub : public PlatformCodeStub { |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1746 | public: |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 1747 | KeyedStoreElementStub(bool is_js_array, |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1748 | ElementsKind elements_kind, |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1749 | KeyedAccessStoreMode store_mode) |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1750 | : is_js_array_(is_js_array), |
| 1751 | elements_kind_(elements_kind), |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1752 | store_mode_(store_mode), |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 1753 | fp_registers_(CanUseFPRegisters()) { } |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1754 | |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 1755 | Major MajorKey() { return KeyedStoreElement; } |
| 1756 | int MinorKey() { |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1757 | return ElementsKindBits::encode(elements_kind_) | |
| 1758 | IsJSArrayBits::encode(is_js_array_) | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1759 | StoreModeBits::encode(store_mode_) | |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 1760 | FPRegisters::encode(fp_registers_); |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 1761 | } |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1762 | |
| 1763 | void Generate(MacroAssembler* masm); |
| 1764 | |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1765 | private: |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1766 | class ElementsKindBits: public BitField<ElementsKind, 0, 8> {}; |
| 1767 | class StoreModeBits: public BitField<KeyedAccessStoreMode, 8, 4> {}; |
| 1768 | class IsJSArrayBits: public BitField<bool, 12, 1> {}; |
| 1769 | class FPRegisters: public BitField<bool, 13, 1> {}; |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1770 | |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1771 | bool is_js_array_; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 1772 | ElementsKind elements_kind_; |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1773 | KeyedAccessStoreMode store_mode_; |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 1774 | bool fp_registers_; |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1775 | |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 1776 | DISALLOW_COPY_AND_ASSIGN(KeyedStoreElementStub); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1777 | }; |
| 1778 | |
| 1779 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1780 | class ToBooleanStub: public PlatformCodeStub { |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1781 | public: |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 1782 | enum Type { |
| 1783 | UNDEFINED, |
| 1784 | BOOLEAN, |
| 1785 | NULL_TYPE, |
| 1786 | SMI, |
| 1787 | SPEC_OBJECT, |
| 1788 | STRING, |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 1789 | SYMBOL, |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 1790 | HEAP_NUMBER, |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 1791 | NUMBER_OF_TYPES |
| 1792 | }; |
| 1793 | |
| 1794 | // At most 8 different types can be distinguished, because the Code object |
| 1795 | // only has room for a single byte to hold a set of these types. :-P |
| 1796 | STATIC_ASSERT(NUMBER_OF_TYPES <= 8); |
| 1797 | |
| 1798 | class Types { |
| 1799 | public: |
| 1800 | Types() {} |
| 1801 | explicit Types(byte bits) : set_(bits) {} |
| 1802 | |
| 1803 | bool IsEmpty() const { return set_.IsEmpty(); } |
| 1804 | bool Contains(Type type) const { return set_.Contains(type); } |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1805 | bool ContainsAnyOf(Types types) const { |
| 1806 | return set_.ContainsAnyOf(types.set_); |
| 1807 | } |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 1808 | void Add(Type type) { set_.Add(type); } |
| 1809 | byte ToByte() const { return set_.ToIntegral(); } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1810 | void Print(StringStream* stream) const; |
| 1811 | void TraceTransition(Types to) const; |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 1812 | bool Record(Handle<Object> object); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1813 | bool NeedsMap() const; |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1814 | bool CanBeUndetectable() const; |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 1815 | |
| 1816 | private: |
| 1817 | EnumSet<Type, byte> set_; |
| 1818 | }; |
| 1819 | |
ricow@chromium.org | 2c99e28 | 2011-07-28 09:15:17 +0000 | [diff] [blame] | 1820 | static Types no_types() { return Types(); } |
| 1821 | static Types all_types() { return Types((1 << NUMBER_OF_TYPES) - 1); } |
| 1822 | |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 1823 | explicit ToBooleanStub(Register tos, Types types = Types()) |
| 1824 | : tos_(tos), types_(types) { } |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1825 | |
| 1826 | void Generate(MacroAssembler* masm); |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 1827 | virtual Code::Kind GetCodeKind() const { return Code::TO_BOOLEAN_IC; } |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 1828 | virtual void PrintName(StringStream* stream); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1829 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1830 | virtual bool SometimesSetsUpAFrame() { return false; } |
| 1831 | |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1832 | private: |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1833 | Major MajorKey() { return ToBoolean; } |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 1834 | int MinorKey() { return (tos_.code() << NUMBER_OF_TYPES) | types_.ToByte(); } |
| 1835 | |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 1836 | virtual void FinishCode(Handle<Code> code) { |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 1837 | code->set_to_boolean_state(types_.ToByte()); |
| 1838 | } |
| 1839 | |
| 1840 | void CheckOddball(MacroAssembler* masm, |
| 1841 | Type type, |
lrn@chromium.org | d4e9e22 | 2011-08-03 12:01:58 +0000 | [diff] [blame] | 1842 | Heap::RootListIndex value, |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1843 | bool result); |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 1844 | void GenerateTypeTransition(MacroAssembler* masm); |
| 1845 | |
| 1846 | Register tos_; |
| 1847 | Types types_; |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1848 | }; |
| 1849 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1850 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1851 | class ElementsTransitionAndStoreStub : public PlatformCodeStub { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1852 | public: |
| 1853 | ElementsTransitionAndStoreStub(ElementsKind from, |
| 1854 | ElementsKind to, |
| 1855 | bool is_jsarray, |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1856 | StrictModeFlag strict_mode, |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1857 | KeyedAccessStoreMode store_mode) |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1858 | : from_(from), |
| 1859 | to_(to), |
| 1860 | is_jsarray_(is_jsarray), |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1861 | strict_mode_(strict_mode), |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1862 | store_mode_(store_mode) {} |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1863 | |
| 1864 | private: |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1865 | class FromBits: public BitField<ElementsKind, 0, 8> {}; |
| 1866 | class ToBits: public BitField<ElementsKind, 8, 8> {}; |
| 1867 | class IsJSArrayBits: public BitField<bool, 16, 1> {}; |
| 1868 | class StrictModeBits: public BitField<StrictModeFlag, 17, 1> {}; |
| 1869 | class StoreModeBits: public BitField<KeyedAccessStoreMode, 18, 4> {}; |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1870 | |
| 1871 | Major MajorKey() { return ElementsTransitionAndStore; } |
| 1872 | int MinorKey() { |
| 1873 | return FromBits::encode(from_) | |
| 1874 | ToBits::encode(to_) | |
| 1875 | IsJSArrayBits::encode(is_jsarray_) | |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1876 | StrictModeBits::encode(strict_mode_) | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1877 | StoreModeBits::encode(store_mode_); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1878 | } |
| 1879 | |
| 1880 | void Generate(MacroAssembler* masm); |
| 1881 | |
| 1882 | ElementsKind from_; |
| 1883 | ElementsKind to_; |
| 1884 | bool is_jsarray_; |
| 1885 | StrictModeFlag strict_mode_; |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1886 | KeyedAccessStoreMode store_mode_; |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1887 | |
| 1888 | DISALLOW_COPY_AND_ASSIGN(ElementsTransitionAndStoreStub); |
| 1889 | }; |
| 1890 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1891 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1892 | class StoreArrayLiteralElementStub : public PlatformCodeStub { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1893 | public: |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 1894 | StoreArrayLiteralElementStub() |
| 1895 | : fp_registers_(CanUseFPRegisters()) { } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1896 | |
| 1897 | private: |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 1898 | class FPRegisters: public BitField<bool, 0, 1> {}; |
| 1899 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1900 | Major MajorKey() { return StoreArrayLiteralElement; } |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 1901 | int MinorKey() { return FPRegisters::encode(fp_registers_); } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1902 | |
| 1903 | void Generate(MacroAssembler* masm); |
| 1904 | |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 1905 | bool fp_registers_; |
| 1906 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1907 | DISALLOW_COPY_AND_ASSIGN(StoreArrayLiteralElementStub); |
| 1908 | }; |
| 1909 | |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 1910 | |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 1911 | class StubFailureTrampolineStub : public PlatformCodeStub { |
| 1912 | public: |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 1913 | explicit StubFailureTrampolineStub(StubFunctionMode function_mode) |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1914 | : fp_registers_(CanUseFPRegisters()), function_mode_(function_mode) {} |
mmassi@chromium.org | 2f0efde | 2013-02-06 14:12:58 +0000 | [diff] [blame] | 1915 | |
| 1916 | virtual bool IsPregenerated() { return true; } |
| 1917 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1918 | static void GenerateAheadOfTime(Isolate* isolate); |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 1919 | |
| 1920 | private: |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1921 | class FPRegisters: public BitField<bool, 0, 1> {}; |
| 1922 | class FunctionModeField: public BitField<StubFunctionMode, 1, 1> {}; |
| 1923 | |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 1924 | Major MajorKey() { return StubFailureTrampoline; } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1925 | int MinorKey() { |
| 1926 | return FPRegisters::encode(fp_registers_) | |
| 1927 | FunctionModeField::encode(function_mode_); |
| 1928 | } |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 1929 | |
| 1930 | void Generate(MacroAssembler* masm); |
| 1931 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1932 | bool fp_registers_; |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 1933 | StubFunctionMode function_mode_; |
mmassi@chromium.org | 2f0efde | 2013-02-06 14:12:58 +0000 | [diff] [blame] | 1934 | |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 1935 | DISALLOW_COPY_AND_ASSIGN(StubFailureTrampolineStub); |
| 1936 | }; |
| 1937 | |
| 1938 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1939 | class ProfileEntryHookStub : public PlatformCodeStub { |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 1940 | public: |
| 1941 | explicit ProfileEntryHookStub() {} |
| 1942 | |
| 1943 | // The profile entry hook function is not allowed to cause a GC. |
| 1944 | virtual bool SometimesSetsUpAFrame() { return false; } |
| 1945 | |
| 1946 | // Generates a call to the entry hook if it's enabled. |
| 1947 | static void MaybeCallEntryHook(MacroAssembler* masm); |
| 1948 | |
| 1949 | // Sets or unsets the entry hook function. Returns true on success, |
| 1950 | // false on an attempt to replace a non-NULL entry hook with another |
| 1951 | // non-NULL hook. |
| 1952 | static bool SetFunctionEntryHook(FunctionEntryHook entry_hook); |
| 1953 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 1954 | static bool HasEntryHook() { return entry_hook_ != NULL; } |
| 1955 | |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 1956 | private: |
| 1957 | static void EntryHookTrampoline(intptr_t function, |
| 1958 | intptr_t stack_pointer); |
| 1959 | |
| 1960 | Major MajorKey() { return ProfileEntryHook; } |
| 1961 | int MinorKey() { return 0; } |
| 1962 | |
| 1963 | void Generate(MacroAssembler* masm); |
| 1964 | |
| 1965 | // The current function entry hook. |
| 1966 | static FunctionEntryHook entry_hook_; |
| 1967 | |
| 1968 | DISALLOW_COPY_AND_ASSIGN(ProfileEntryHookStub); |
| 1969 | }; |
| 1970 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1971 | } } // namespace v8::internal |
| 1972 | |
| 1973 | #endif // V8_CODE_STUBS_H_ |