Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +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 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 31 | #include "allocation.h" |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 32 | #include "globals.h" |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 33 | #include "codegen.h" |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 34 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 35 | namespace v8 { |
| 36 | namespace internal { |
| 37 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 38 | // List of code stubs used on all platforms. |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 39 | #define CODE_STUB_LIST_ALL_PLATFORMS(V) \ |
| 40 | V(CallFunction) \ |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 41 | V(CallConstruct) \ |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 42 | V(UnaryOp) \ |
| 43 | V(BinaryOp) \ |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 44 | V(StringAdd) \ |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 45 | V(SubString) \ |
| 46 | V(StringCompare) \ |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 47 | V(Compare) \ |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 48 | V(CompareIC) \ |
| 49 | V(MathPow) \ |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 50 | V(RecordWrite) \ |
| 51 | V(StoreBufferOverflow) \ |
| 52 | V(RegExpExec) \ |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 53 | V(TranscendentalCache) \ |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 54 | V(Instanceof) \ |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 55 | V(ConvertToDouble) \ |
| 56 | V(WriteInt32ToHeapNumber) \ |
| 57 | V(StackCheck) \ |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 58 | V(Interrupt) \ |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 59 | V(FastNewClosure) \ |
| 60 | V(FastNewContext) \ |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 61 | V(FastNewBlockContext) \ |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 62 | V(FastCloneShallowArray) \ |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 63 | V(FastCloneShallowObject) \ |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 64 | V(ToBoolean) \ |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 65 | V(ToNumber) \ |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 66 | V(ArgumentsAccess) \ |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 67 | V(RegExpConstructResult) \ |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 68 | V(NumberToString) \ |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 69 | V(CEntry) \ |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 70 | V(JSEntry) \ |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 71 | V(KeyedLoadElement) \ |
| 72 | V(KeyedStoreElement) \ |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 73 | V(DebuggerStatement) \ |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 74 | V(StringDictionaryLookup) \ |
| 75 | V(ElementsTransitionAndStore) \ |
| 76 | V(StoreArrayLiteralElement) |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 77 | |
| 78 | // List of code stubs only used on ARM platforms. |
| 79 | #ifdef V8_TARGET_ARCH_ARM |
| 80 | #define CODE_STUB_LIST_ARM(V) \ |
| 81 | V(GetProperty) \ |
| 82 | V(SetProperty) \ |
| 83 | V(InvokeBuiltin) \ |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 84 | V(RegExpCEntry) \ |
| 85 | V(DirectCEntry) |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 86 | #else |
| 87 | #define CODE_STUB_LIST_ARM(V) |
| 88 | #endif |
| 89 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 90 | // List of code stubs only used on MIPS platforms. |
| 91 | #ifdef V8_TARGET_ARCH_MIPS |
| 92 | #define CODE_STUB_LIST_MIPS(V) \ |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 93 | V(RegExpCEntry) \ |
| 94 | V(DirectCEntry) |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 95 | #else |
| 96 | #define CODE_STUB_LIST_MIPS(V) |
| 97 | #endif |
| 98 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 99 | // Combined list of code stubs. |
| 100 | #define CODE_STUB_LIST(V) \ |
| 101 | CODE_STUB_LIST_ALL_PLATFORMS(V) \ |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 102 | CODE_STUB_LIST_ARM(V) \ |
| 103 | CODE_STUB_LIST_MIPS(V) |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 104 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 105 | // Mode to overwrite BinaryExpression values. |
| 106 | enum OverwriteMode { NO_OVERWRITE, OVERWRITE_LEFT, OVERWRITE_RIGHT }; |
| 107 | enum UnaryOverwriteMode { UNARY_OVERWRITE, UNARY_NO_OVERWRITE }; |
| 108 | |
| 109 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 110 | // Stub is base classes of all stubs. |
| 111 | class CodeStub BASE_EMBEDDED { |
| 112 | public: |
| 113 | enum Major { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 114 | #define DEF_ENUM(name) name, |
| 115 | CODE_STUB_LIST(DEF_ENUM) |
| 116 | #undef DEF_ENUM |
| 117 | NoCache, // marker for stubs that do custom caching |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 118 | NUMBER_OF_IDS |
| 119 | }; |
| 120 | |
| 121 | // Retrieve the code for the stub. Generate the code if needed. |
| 122 | Handle<Code> GetCode(); |
| 123 | |
| 124 | static Major MajorKeyFromKey(uint32_t key) { |
| 125 | return static_cast<Major>(MajorKeyBits::decode(key)); |
Iain Merrick | 9ac36c9 | 2010-09-13 15:29:50 +0100 | [diff] [blame] | 126 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 127 | static int MinorKeyFromKey(uint32_t key) { |
| 128 | return MinorKeyBits::decode(key); |
Iain Merrick | 9ac36c9 | 2010-09-13 15:29:50 +0100 | [diff] [blame] | 129 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 130 | |
| 131 | // Gets the major key from a code object that is a code stub or binary op IC. |
| 132 | static Major GetMajorKey(Code* code_stub) { |
| 133 | return static_cast<Major>(code_stub->major_key()); |
| 134 | } |
| 135 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 136 | static const char* MajorName(Major major_key, bool allow_unknown_keys); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 137 | |
| 138 | virtual ~CodeStub() {} |
| 139 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 140 | bool CompilingCallsToThisStubIsGCSafe() { |
| 141 | bool is_pregenerated = IsPregenerated(); |
| 142 | Code* code = NULL; |
| 143 | CHECK(!is_pregenerated || FindCodeInCache(&code)); |
| 144 | return is_pregenerated; |
| 145 | } |
| 146 | |
| 147 | // See comment above, where Instanceof is defined. |
| 148 | virtual bool IsPregenerated() { return false; } |
| 149 | |
| 150 | static void GenerateStubsAheadOfTime(); |
| 151 | static void GenerateFPStubs(); |
| 152 | |
| 153 | // Some stubs put untagged junk on the stack that cannot be scanned by the |
| 154 | // GC. This means that we must be statically sure that no GC can occur while |
| 155 | // they are running. If that is the case they should override this to return |
| 156 | // true, which will cause an assertion if we try to call something that can |
| 157 | // GC or if we try to put a stack frame on top of the junk, which would not |
| 158 | // result in a traversable stack. |
| 159 | virtual bool SometimesSetsUpAFrame() { return true; } |
| 160 | |
| 161 | // Lookup the code in the (possibly custom) cache. |
| 162 | bool FindCodeInCache(Code** code_out); |
| 163 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 164 | protected: |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 165 | static const int kMajorBits = 6; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 166 | static const int kMinorBits = kBitsPerInt - kSmiTagSize - kMajorBits; |
| 167 | |
| 168 | private: |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 169 | // Nonvirtual wrapper around the stub-specific Generate function. Call |
| 170 | // this function to set up the macro assembler and generate the code. |
| 171 | void GenerateCode(MacroAssembler* masm); |
| 172 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 173 | // Generates the assembler code for the stub. |
| 174 | virtual void Generate(MacroAssembler* masm) = 0; |
| 175 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 176 | // Perform bookkeeping required after code generation when stub code is |
| 177 | // initially generated. |
| 178 | void RecordCodeGeneration(Code* code, MacroAssembler* masm); |
| 179 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 180 | // Finish the code object after it has been generated. |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 181 | virtual void FinishCode(Handle<Code> code) { } |
| 182 | |
| 183 | // Activate newly generated stub. Is called after |
| 184 | // registering stub in the stub cache. |
| 185 | virtual void Activate(Code* code) { } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 186 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 187 | // Returns information for computing the number key. |
| 188 | virtual Major MajorKey() = 0; |
| 189 | virtual int MinorKey() = 0; |
| 190 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 191 | // BinaryOpStub needs to override this. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 192 | virtual int GetCodeKind(); |
| 193 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 194 | // BinaryOpStub needs to override this. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 195 | virtual InlineCacheState GetICState() { |
| 196 | return UNINITIALIZED; |
| 197 | } |
| 198 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 199 | // Add the code to a specialized cache, specific to an individual |
| 200 | // stub type. Please note, this method must add the code object to a |
| 201 | // roots object, otherwise we will remove the code during GC. |
| 202 | virtual void AddToSpecialCache(Handle<Code> new_object) { } |
| 203 | |
| 204 | // Find code in a specialized cache, work is delegated to the specific stub. |
| 205 | virtual bool FindCodeInSpecialCache(Code** code_out) { return false; } |
| 206 | |
| 207 | // If a stub uses a special cache override this. |
| 208 | virtual bool UseSpecialCache() { return false; } |
| 209 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 210 | // Returns a name for logging/debugging purposes. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 211 | SmartArrayPointer<const char> GetName(); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 212 | virtual void PrintName(StringStream* stream); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 213 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 214 | // Returns whether the code generated for this stub needs to be allocated as |
| 215 | // a fixed (non-moveable) code object. |
| 216 | virtual bool NeedsImmovableCode() { return false; } |
| 217 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 218 | // Computes the key based on major and minor. |
| 219 | uint32_t GetKey() { |
| 220 | ASSERT(static_cast<int>(MajorKey()) < NUMBER_OF_IDS); |
| 221 | return MinorKeyBits::encode(MinorKey()) | |
| 222 | MajorKeyBits::encode(MajorKey()); |
| 223 | } |
| 224 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 225 | class MajorKeyBits: public BitField<uint32_t, 0, kMajorBits> {}; |
| 226 | class MinorKeyBits: public BitField<uint32_t, kMajorBits, kMinorBits> {}; |
| 227 | |
| 228 | friend class BreakPointIterator; |
| 229 | }; |
| 230 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 231 | |
| 232 | // Helper interface to prepare to/restore after making runtime calls. |
| 233 | class RuntimeCallHelper { |
| 234 | public: |
| 235 | virtual ~RuntimeCallHelper() {} |
| 236 | |
| 237 | virtual void BeforeCall(MacroAssembler* masm) const = 0; |
| 238 | |
| 239 | virtual void AfterCall(MacroAssembler* masm) const = 0; |
| 240 | |
| 241 | protected: |
| 242 | RuntimeCallHelper() {} |
| 243 | |
| 244 | private: |
| 245 | DISALLOW_COPY_AND_ASSIGN(RuntimeCallHelper); |
| 246 | }; |
| 247 | |
| 248 | } } // namespace v8::internal |
| 249 | |
| 250 | #if V8_TARGET_ARCH_IA32 |
| 251 | #include "ia32/code-stubs-ia32.h" |
| 252 | #elif V8_TARGET_ARCH_X64 |
| 253 | #include "x64/code-stubs-x64.h" |
| 254 | #elif V8_TARGET_ARCH_ARM |
| 255 | #include "arm/code-stubs-arm.h" |
| 256 | #elif V8_TARGET_ARCH_MIPS |
| 257 | #include "mips/code-stubs-mips.h" |
| 258 | #else |
| 259 | #error Unsupported target architecture. |
| 260 | #endif |
| 261 | |
| 262 | namespace v8 { |
| 263 | namespace internal { |
| 264 | |
| 265 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 266 | // RuntimeCallHelper implementation used in stubs: enters/leaves a |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 267 | // newly created internal frame before/after the runtime call. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 268 | class StubRuntimeCallHelper : public RuntimeCallHelper { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 269 | public: |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 270 | StubRuntimeCallHelper() {} |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 271 | |
| 272 | virtual void BeforeCall(MacroAssembler* masm) const; |
| 273 | |
| 274 | virtual void AfterCall(MacroAssembler* masm) const; |
| 275 | }; |
| 276 | |
| 277 | |
| 278 | // Trivial RuntimeCallHelper implementation. |
| 279 | class NopRuntimeCallHelper : public RuntimeCallHelper { |
| 280 | public: |
| 281 | NopRuntimeCallHelper() {} |
| 282 | |
| 283 | virtual void BeforeCall(MacroAssembler* masm) const {} |
| 284 | |
| 285 | virtual void AfterCall(MacroAssembler* masm) const {} |
| 286 | }; |
| 287 | |
| 288 | |
| 289 | class StackCheckStub : public CodeStub { |
| 290 | public: |
| 291 | StackCheckStub() { } |
| 292 | |
| 293 | void Generate(MacroAssembler* masm); |
| 294 | |
| 295 | private: |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 296 | Major MajorKey() { return StackCheck; } |
| 297 | int MinorKey() { return 0; } |
| 298 | }; |
| 299 | |
| 300 | |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 301 | class InterruptStub : public CodeStub { |
| 302 | public: |
| 303 | InterruptStub() { } |
| 304 | |
| 305 | void Generate(MacroAssembler* masm); |
| 306 | |
| 307 | private: |
| 308 | Major MajorKey() { return Interrupt; } |
| 309 | int MinorKey() { return 0; } |
| 310 | }; |
| 311 | |
| 312 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 313 | class ToNumberStub: public CodeStub { |
| 314 | public: |
| 315 | ToNumberStub() { } |
| 316 | |
| 317 | void Generate(MacroAssembler* masm); |
| 318 | |
| 319 | private: |
| 320 | Major MajorKey() { return ToNumber; } |
| 321 | int MinorKey() { return 0; } |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 322 | }; |
| 323 | |
| 324 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 325 | class FastNewClosureStub : public CodeStub { |
| 326 | public: |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 327 | explicit FastNewClosureStub(LanguageMode language_mode) |
| 328 | : language_mode_(language_mode) { } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 329 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 330 | void Generate(MacroAssembler* masm); |
| 331 | |
| 332 | private: |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 333 | Major MajorKey() { return FastNewClosure; } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 334 | int MinorKey() { return language_mode_ == CLASSIC_MODE |
| 335 | ? kNonStrictMode : kStrictMode; } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 336 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 337 | LanguageMode language_mode_; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 338 | }; |
| 339 | |
| 340 | |
| 341 | class FastNewContextStub : public CodeStub { |
| 342 | public: |
| 343 | static const int kMaximumSlots = 64; |
| 344 | |
| 345 | explicit FastNewContextStub(int slots) : slots_(slots) { |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 346 | ASSERT(slots_ > 0 && slots_ <= kMaximumSlots); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | void Generate(MacroAssembler* masm); |
| 350 | |
| 351 | private: |
| 352 | int slots_; |
| 353 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 354 | Major MajorKey() { return FastNewContext; } |
| 355 | int MinorKey() { return slots_; } |
| 356 | }; |
| 357 | |
| 358 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 359 | class FastNewBlockContextStub : public CodeStub { |
| 360 | public: |
| 361 | static const int kMaximumSlots = 64; |
| 362 | |
| 363 | explicit FastNewBlockContextStub(int slots) : slots_(slots) { |
| 364 | ASSERT(slots_ > 0 && slots_ <= kMaximumSlots); |
| 365 | } |
| 366 | |
| 367 | void Generate(MacroAssembler* masm); |
| 368 | |
| 369 | private: |
| 370 | int slots_; |
| 371 | |
| 372 | Major MajorKey() { return FastNewBlockContext; } |
| 373 | int MinorKey() { return slots_; } |
| 374 | }; |
| 375 | |
| 376 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 377 | class FastCloneShallowArrayStub : public CodeStub { |
| 378 | public: |
| 379 | // Maximum length of copied elements array. |
| 380 | static const int kMaximumClonedLength = 8; |
| 381 | |
| 382 | enum Mode { |
| 383 | CLONE_ELEMENTS, |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 384 | CLONE_DOUBLE_ELEMENTS, |
| 385 | COPY_ON_WRITE_ELEMENTS, |
| 386 | CLONE_ANY_ELEMENTS |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 387 | }; |
| 388 | |
| 389 | FastCloneShallowArrayStub(Mode mode, int length) |
| 390 | : mode_(mode), |
| 391 | length_((mode == COPY_ON_WRITE_ELEMENTS) ? 0 : length) { |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 392 | ASSERT_GE(length_, 0); |
| 393 | ASSERT_LE(length_, kMaximumClonedLength); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 394 | } |
| 395 | |
| 396 | void Generate(MacroAssembler* masm); |
| 397 | |
| 398 | private: |
| 399 | Mode mode_; |
| 400 | int length_; |
| 401 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 402 | Major MajorKey() { return FastCloneShallowArray; } |
| 403 | int MinorKey() { |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 404 | ASSERT(mode_ == 0 || mode_ == 1 || mode_ == 2 || mode_ == 3); |
| 405 | return length_ * 4 + mode_; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 406 | } |
| 407 | }; |
| 408 | |
| 409 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 410 | class FastCloneShallowObjectStub : public CodeStub { |
| 411 | public: |
| 412 | // Maximum number of properties in copied object. |
| 413 | static const int kMaximumClonedProperties = 6; |
| 414 | |
| 415 | explicit FastCloneShallowObjectStub(int length) : length_(length) { |
| 416 | ASSERT_GE(length_, 0); |
| 417 | ASSERT_LE(length_, kMaximumClonedProperties); |
| 418 | } |
| 419 | |
| 420 | void Generate(MacroAssembler* masm); |
| 421 | |
| 422 | private: |
| 423 | int length_; |
| 424 | |
| 425 | Major MajorKey() { return FastCloneShallowObject; } |
| 426 | int MinorKey() { return length_; } |
| 427 | }; |
| 428 | |
| 429 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 430 | class InstanceofStub: public CodeStub { |
| 431 | public: |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 432 | enum Flags { |
| 433 | kNoFlags = 0, |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 434 | kArgsInRegisters = 1 << 0, |
| 435 | kCallSiteInlineCheck = 1 << 1, |
| 436 | kReturnTrueFalseObject = 1 << 2 |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 437 | }; |
| 438 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 439 | explicit InstanceofStub(Flags flags) : flags_(flags) { } |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 440 | |
| 441 | static Register left(); |
| 442 | static Register right(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 443 | |
| 444 | void Generate(MacroAssembler* masm); |
| 445 | |
| 446 | private: |
| 447 | Major MajorKey() { return Instanceof; } |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 448 | int MinorKey() { return static_cast<int>(flags_); } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 449 | |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 450 | bool HasArgsInRegisters() const { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 451 | return (flags_ & kArgsInRegisters) != 0; |
| 452 | } |
| 453 | |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 454 | bool HasCallSiteInlineCheck() const { |
| 455 | return (flags_ & kCallSiteInlineCheck) != 0; |
| 456 | } |
| 457 | |
| 458 | bool ReturnTrueFalseObject() const { |
| 459 | return (flags_ & kReturnTrueFalseObject) != 0; |
| 460 | } |
| 461 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 462 | virtual void PrintName(StringStream* stream); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 463 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 464 | Flags flags_; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 465 | }; |
| 466 | |
| 467 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 468 | class MathPowStub: public CodeStub { |
| 469 | public: |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 470 | enum ExponentType { INTEGER, DOUBLE, TAGGED, ON_STACK}; |
| 471 | |
| 472 | explicit MathPowStub(ExponentType exponent_type) |
| 473 | : exponent_type_(exponent_type) { } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 474 | virtual void Generate(MacroAssembler* masm); |
| 475 | |
| 476 | private: |
| 477 | virtual CodeStub::Major MajorKey() { return MathPow; } |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 478 | virtual int MinorKey() { return exponent_type_; } |
| 479 | |
| 480 | ExponentType exponent_type_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 481 | }; |
| 482 | |
| 483 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 484 | class ICCompareStub: public CodeStub { |
| 485 | public: |
| 486 | ICCompareStub(Token::Value op, CompareIC::State state) |
| 487 | : op_(op), state_(state) { |
| 488 | ASSERT(Token::IsCompareOp(op)); |
| 489 | } |
| 490 | |
| 491 | virtual void Generate(MacroAssembler* masm); |
| 492 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 493 | void set_known_map(Handle<Map> map) { known_map_ = map; } |
| 494 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 495 | private: |
| 496 | class OpField: public BitField<int, 0, 3> { }; |
| 497 | class StateField: public BitField<int, 3, 5> { }; |
| 498 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 499 | virtual void FinishCode(Handle<Code> code) { |
| 500 | code->set_compare_state(state_); |
| 501 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 502 | |
| 503 | virtual CodeStub::Major MajorKey() { return CompareIC; } |
| 504 | virtual int MinorKey(); |
| 505 | |
| 506 | virtual int GetCodeKind() { return Code::COMPARE_IC; } |
| 507 | |
| 508 | void GenerateSmis(MacroAssembler* masm); |
| 509 | void GenerateHeapNumbers(MacroAssembler* masm); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 510 | void GenerateSymbols(MacroAssembler* masm); |
| 511 | void GenerateStrings(MacroAssembler* masm); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 512 | void GenerateObjects(MacroAssembler* masm); |
| 513 | void GenerateMiss(MacroAssembler* masm); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 514 | void GenerateKnownObjects(MacroAssembler* masm); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 515 | |
| 516 | bool strict() const { return op_ == Token::EQ_STRICT; } |
| 517 | Condition GetCondition() const { return CompareIC::ComputeCondition(op_); } |
| 518 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 519 | virtual void AddToSpecialCache(Handle<Code> new_object); |
| 520 | virtual bool FindCodeInSpecialCache(Code** code_out); |
| 521 | virtual bool UseSpecialCache() { return state_ == CompareIC::KNOWN_OBJECTS; } |
| 522 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 523 | Token::Value op_; |
| 524 | CompareIC::State state_; |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 525 | Handle<Map> known_map_; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 526 | }; |
| 527 | |
| 528 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 529 | // Flags that control the compare stub code generation. |
| 530 | enum CompareFlags { |
| 531 | NO_COMPARE_FLAGS = 0, |
| 532 | NO_SMI_COMPARE_IN_STUB = 1 << 0, |
| 533 | NO_NUMBER_COMPARE_IN_STUB = 1 << 1, |
| 534 | CANT_BOTH_BE_NAN = 1 << 2 |
| 535 | }; |
| 536 | |
| 537 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 538 | enum NaNInformation { |
| 539 | kBothCouldBeNaN, |
| 540 | kCantBothBeNaN |
| 541 | }; |
| 542 | |
| 543 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 544 | class CompareStub: public CodeStub { |
| 545 | public: |
| 546 | CompareStub(Condition cc, |
| 547 | bool strict, |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 548 | CompareFlags flags, |
| 549 | Register lhs, |
| 550 | Register rhs) : |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 551 | cc_(cc), |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 552 | strict_(strict), |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 553 | never_nan_nan_((flags & CANT_BOTH_BE_NAN) != 0), |
| 554 | include_number_compare_((flags & NO_NUMBER_COMPARE_IN_STUB) == 0), |
| 555 | include_smi_compare_((flags & NO_SMI_COMPARE_IN_STUB) == 0), |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 556 | lhs_(lhs), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 557 | rhs_(rhs) { } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 558 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 559 | CompareStub(Condition cc, |
| 560 | bool strict, |
| 561 | CompareFlags flags) : |
| 562 | cc_(cc), |
| 563 | strict_(strict), |
| 564 | never_nan_nan_((flags & CANT_BOTH_BE_NAN) != 0), |
| 565 | include_number_compare_((flags & NO_NUMBER_COMPARE_IN_STUB) == 0), |
| 566 | include_smi_compare_((flags & NO_SMI_COMPARE_IN_STUB) == 0), |
| 567 | lhs_(no_reg), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 568 | rhs_(no_reg) { } |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 569 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 570 | void Generate(MacroAssembler* masm); |
| 571 | |
| 572 | private: |
| 573 | Condition cc_; |
| 574 | bool strict_; |
| 575 | // Only used for 'equal' comparisons. Tells the stub that we already know |
| 576 | // that at least one side of the comparison is not NaN. This allows the |
| 577 | // stub to use object identity in the positive case. We ignore it when |
| 578 | // generating the minor key for other comparisons to avoid creating more |
| 579 | // stubs. |
| 580 | bool never_nan_nan_; |
| 581 | // Do generate the number comparison code in the stub. Stubs without number |
| 582 | // comparison code is used when the number comparison has been inlined, and |
| 583 | // the stub will be called if one of the operands is not a number. |
| 584 | bool include_number_compare_; |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 585 | |
| 586 | // Generate the comparison code for two smi operands in the stub. |
| 587 | bool include_smi_compare_; |
| 588 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 589 | // Register holding the left hand side of the comparison if the stub gives |
| 590 | // a choice, no_reg otherwise. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 591 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 592 | Register lhs_; |
| 593 | // Register holding the right hand side of the comparison if the stub gives |
| 594 | // a choice, no_reg otherwise. |
| 595 | Register rhs_; |
| 596 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 597 | // Encoding of the minor key in 16 bits. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 598 | class StrictField: public BitField<bool, 0, 1> {}; |
| 599 | class NeverNanNanField: public BitField<bool, 1, 1> {}; |
| 600 | class IncludeNumberCompareField: public BitField<bool, 2, 1> {}; |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 601 | class IncludeSmiCompareField: public BitField<bool, 3, 1> {}; |
| 602 | class RegisterField: public BitField<bool, 4, 1> {}; |
| 603 | class ConditionField: public BitField<int, 5, 11> {}; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 604 | |
| 605 | Major MajorKey() { return Compare; } |
| 606 | |
| 607 | int MinorKey(); |
| 608 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 609 | virtual int GetCodeKind() { return Code::COMPARE_IC; } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 610 | virtual void FinishCode(Handle<Code> code) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 611 | code->set_compare_state(CompareIC::GENERIC); |
| 612 | } |
| 613 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 614 | // Branch to the label if the given object isn't a symbol. |
| 615 | void BranchIfNonSymbol(MacroAssembler* masm, |
| 616 | Label* label, |
| 617 | Register object, |
| 618 | Register scratch); |
| 619 | |
| 620 | // Unfortunately you have to run without snapshots to see most of these |
| 621 | // names in the profile since most compare stubs end up in the snapshot. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 622 | virtual void PrintName(StringStream* stream); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 623 | }; |
| 624 | |
| 625 | |
| 626 | class CEntryStub : public CodeStub { |
| 627 | public: |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 628 | explicit CEntryStub(int result_size, |
| 629 | SaveFPRegsMode save_doubles = kDontSaveFPRegs) |
| 630 | : result_size_(result_size), save_doubles_(save_doubles) { } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 631 | |
| 632 | void Generate(MacroAssembler* masm); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 633 | |
| 634 | // The version of this stub that doesn't save doubles is generated ahead of |
| 635 | // time, so it's OK to call it from other stubs that can't cope with GC during |
| 636 | // their code generation. On machines that always have gp registers (x64) we |
| 637 | // can generate both variants ahead of time. |
| 638 | virtual bool IsPregenerated(); |
| 639 | static void GenerateAheadOfTime(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 640 | |
| 641 | private: |
| 642 | void GenerateCore(MacroAssembler* masm, |
| 643 | Label* throw_normal_exception, |
| 644 | Label* throw_termination_exception, |
| 645 | Label* throw_out_of_memory_exception, |
| 646 | bool do_gc, |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 647 | bool always_allocate_scope); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 648 | |
| 649 | // Number of pointers/values returned. |
| 650 | const int result_size_; |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 651 | SaveFPRegsMode save_doubles_; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 652 | |
| 653 | Major MajorKey() { return CEntry; } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 654 | int MinorKey(); |
| 655 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 656 | bool NeedsImmovableCode(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 657 | }; |
| 658 | |
| 659 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 660 | class JSEntryStub : public CodeStub { |
| 661 | public: |
| 662 | JSEntryStub() { } |
| 663 | |
| 664 | void Generate(MacroAssembler* masm) { GenerateBody(masm, false); } |
| 665 | |
| 666 | protected: |
| 667 | void GenerateBody(MacroAssembler* masm, bool is_construct); |
| 668 | |
| 669 | private: |
| 670 | Major MajorKey() { return JSEntry; } |
| 671 | int MinorKey() { return 0; } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 672 | |
| 673 | virtual void FinishCode(Handle<Code> code); |
| 674 | |
| 675 | int handler_offset_; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 676 | }; |
| 677 | |
| 678 | |
| 679 | class JSConstructEntryStub : public JSEntryStub { |
| 680 | public: |
| 681 | JSConstructEntryStub() { } |
| 682 | |
| 683 | void Generate(MacroAssembler* masm) { GenerateBody(masm, true); } |
| 684 | |
| 685 | private: |
| 686 | int MinorKey() { return 1; } |
| 687 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 688 | virtual void PrintName(StringStream* stream) { |
| 689 | stream->Add("JSConstructEntryStub"); |
| 690 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 691 | }; |
| 692 | |
| 693 | |
| 694 | class ArgumentsAccessStub: public CodeStub { |
| 695 | public: |
| 696 | enum Type { |
| 697 | READ_ELEMENT, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 698 | NEW_NON_STRICT_FAST, |
| 699 | NEW_NON_STRICT_SLOW, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 700 | NEW_STRICT |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 701 | }; |
| 702 | |
| 703 | explicit ArgumentsAccessStub(Type type) : type_(type) { } |
| 704 | |
| 705 | private: |
| 706 | Type type_; |
| 707 | |
| 708 | Major MajorKey() { return ArgumentsAccess; } |
| 709 | int MinorKey() { return type_; } |
| 710 | |
| 711 | void Generate(MacroAssembler* masm); |
| 712 | void GenerateReadElement(MacroAssembler* masm); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 713 | void GenerateNewStrict(MacroAssembler* masm); |
| 714 | void GenerateNewNonStrictFast(MacroAssembler* masm); |
| 715 | void GenerateNewNonStrictSlow(MacroAssembler* masm); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 716 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 717 | virtual void PrintName(StringStream* stream); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 718 | }; |
| 719 | |
| 720 | |
| 721 | class RegExpExecStub: public CodeStub { |
| 722 | public: |
| 723 | RegExpExecStub() { } |
| 724 | |
| 725 | private: |
| 726 | Major MajorKey() { return RegExpExec; } |
| 727 | int MinorKey() { return 0; } |
| 728 | |
| 729 | void Generate(MacroAssembler* masm); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 730 | }; |
| 731 | |
| 732 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 733 | class RegExpConstructResultStub: public CodeStub { |
| 734 | public: |
| 735 | RegExpConstructResultStub() { } |
| 736 | |
| 737 | private: |
| 738 | Major MajorKey() { return RegExpConstructResult; } |
| 739 | int MinorKey() { return 0; } |
| 740 | |
| 741 | void Generate(MacroAssembler* masm); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 742 | }; |
| 743 | |
| 744 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 745 | class CallFunctionStub: public CodeStub { |
| 746 | public: |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 747 | CallFunctionStub(int argc, CallFunctionFlags flags) |
| 748 | : argc_(argc), flags_(flags) { } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 749 | |
| 750 | void Generate(MacroAssembler* masm); |
| 751 | |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 752 | virtual void FinishCode(Handle<Code> code) { |
| 753 | code->set_has_function_cache(RecordCallTarget()); |
| 754 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 755 | |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 756 | static int ExtractArgcFromMinorKey(int minor_key) { |
| 757 | return ArgcBits::decode(minor_key); |
| 758 | } |
| 759 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 760 | private: |
| 761 | int argc_; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 762 | CallFunctionFlags flags_; |
| 763 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 764 | virtual void PrintName(StringStream* stream); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 765 | |
| 766 | // Minor key encoding in 32 bits with Bitfield <Type, shift, size>. |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 767 | class FlagBits: public BitField<CallFunctionFlags, 0, 2> {}; |
| 768 | class ArgcBits: public BitField<unsigned, 2, 32 - 2> {}; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 769 | |
| 770 | Major MajorKey() { return CallFunction; } |
| 771 | int MinorKey() { |
| 772 | // Encode the parameters in a unique 32 bit value. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 773 | return FlagBits::encode(flags_) | ArgcBits::encode(argc_); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 774 | } |
| 775 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 776 | bool ReceiverMightBeImplicit() { |
| 777 | return (flags_ & RECEIVER_MIGHT_BE_IMPLICIT) != 0; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 778 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 779 | |
| 780 | bool RecordCallTarget() { |
| 781 | return (flags_ & RECORD_CALL_TARGET) != 0; |
| 782 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 783 | }; |
| 784 | |
| 785 | |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 786 | class CallConstructStub: public CodeStub { |
| 787 | public: |
| 788 | explicit CallConstructStub(CallFunctionFlags flags) : flags_(flags) {} |
| 789 | |
| 790 | void Generate(MacroAssembler* masm); |
| 791 | |
| 792 | virtual void FinishCode(Handle<Code> code) { |
| 793 | code->set_has_function_cache(RecordCallTarget()); |
| 794 | } |
| 795 | |
| 796 | private: |
| 797 | CallFunctionFlags flags_; |
| 798 | |
| 799 | virtual void PrintName(StringStream* stream); |
| 800 | |
| 801 | Major MajorKey() { return CallConstruct; } |
| 802 | int MinorKey() { return flags_; } |
| 803 | |
| 804 | bool RecordCallTarget() { |
| 805 | return (flags_ & RECORD_CALL_TARGET) != 0; |
| 806 | } |
| 807 | }; |
| 808 | |
| 809 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 810 | enum StringIndexFlags { |
| 811 | // Accepts smis or heap numbers. |
| 812 | STRING_INDEX_IS_NUMBER, |
| 813 | |
| 814 | // Accepts smis or heap numbers that are valid array indices |
| 815 | // (ECMA-262 15.4). Invalid indices are reported as being out of |
| 816 | // range. |
| 817 | STRING_INDEX_IS_ARRAY_INDEX |
| 818 | }; |
| 819 | |
| 820 | |
| 821 | // Generates code implementing String.prototype.charCodeAt. |
| 822 | // |
| 823 | // Only supports the case when the receiver is a string and the index |
| 824 | // is a number (smi or heap number) that is a valid index into the |
| 825 | // string. Additional index constraints are specified by the |
| 826 | // flags. Otherwise, bails out to the provided labels. |
| 827 | // |
| 828 | // Register usage: |object| may be changed to another string in a way |
| 829 | // that doesn't affect charCodeAt/charAt semantics, |index| is |
| 830 | // preserved, |scratch| and |result| are clobbered. |
| 831 | class StringCharCodeAtGenerator { |
| 832 | public: |
| 833 | StringCharCodeAtGenerator(Register object, |
| 834 | Register index, |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 835 | Register result, |
| 836 | Label* receiver_not_string, |
| 837 | Label* index_not_number, |
| 838 | Label* index_out_of_range, |
| 839 | StringIndexFlags index_flags) |
| 840 | : object_(object), |
| 841 | index_(index), |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 842 | result_(result), |
| 843 | receiver_not_string_(receiver_not_string), |
| 844 | index_not_number_(index_not_number), |
| 845 | index_out_of_range_(index_out_of_range), |
| 846 | index_flags_(index_flags) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 847 | ASSERT(!result_.is(object_)); |
| 848 | ASSERT(!result_.is(index_)); |
| 849 | } |
| 850 | |
| 851 | // Generates the fast case code. On the fallthrough path |result| |
| 852 | // register contains the result. |
| 853 | void GenerateFast(MacroAssembler* masm); |
| 854 | |
| 855 | // Generates the slow case code. Must not be naturally |
| 856 | // reachable. Expected to be put after a ret instruction (e.g., in |
| 857 | // deferred code). Always jumps back to the fast case. |
| 858 | void GenerateSlow(MacroAssembler* masm, |
| 859 | const RuntimeCallHelper& call_helper); |
| 860 | |
| 861 | private: |
| 862 | Register object_; |
| 863 | Register index_; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 864 | Register result_; |
| 865 | |
| 866 | Label* receiver_not_string_; |
| 867 | Label* index_not_number_; |
| 868 | Label* index_out_of_range_; |
| 869 | |
| 870 | StringIndexFlags index_flags_; |
| 871 | |
| 872 | Label call_runtime_; |
| 873 | Label index_not_smi_; |
| 874 | Label got_smi_index_; |
| 875 | Label exit_; |
| 876 | |
| 877 | DISALLOW_COPY_AND_ASSIGN(StringCharCodeAtGenerator); |
| 878 | }; |
| 879 | |
| 880 | |
| 881 | // Generates code for creating a one-char string from a char code. |
| 882 | class StringCharFromCodeGenerator { |
| 883 | public: |
| 884 | StringCharFromCodeGenerator(Register code, |
| 885 | Register result) |
| 886 | : code_(code), |
| 887 | result_(result) { |
| 888 | ASSERT(!code_.is(result_)); |
| 889 | } |
| 890 | |
| 891 | // Generates the fast case code. On the fallthrough path |result| |
| 892 | // register contains the result. |
| 893 | void GenerateFast(MacroAssembler* masm); |
| 894 | |
| 895 | // Generates the slow case code. Must not be naturally |
| 896 | // reachable. Expected to be put after a ret instruction (e.g., in |
| 897 | // deferred code). Always jumps back to the fast case. |
| 898 | void GenerateSlow(MacroAssembler* masm, |
| 899 | const RuntimeCallHelper& call_helper); |
| 900 | |
| 901 | private: |
| 902 | Register code_; |
| 903 | Register result_; |
| 904 | |
| 905 | Label slow_case_; |
| 906 | Label exit_; |
| 907 | |
| 908 | DISALLOW_COPY_AND_ASSIGN(StringCharFromCodeGenerator); |
| 909 | }; |
| 910 | |
| 911 | |
| 912 | // Generates code implementing String.prototype.charAt. |
| 913 | // |
| 914 | // Only supports the case when the receiver is a string and the index |
| 915 | // is a number (smi or heap number) that is a valid index into the |
| 916 | // string. Additional index constraints are specified by the |
| 917 | // flags. Otherwise, bails out to the provided labels. |
| 918 | // |
| 919 | // Register usage: |object| may be changed to another string in a way |
| 920 | // that doesn't affect charCodeAt/charAt semantics, |index| is |
| 921 | // preserved, |scratch1|, |scratch2|, and |result| are clobbered. |
| 922 | class StringCharAtGenerator { |
| 923 | public: |
| 924 | StringCharAtGenerator(Register object, |
| 925 | Register index, |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 926 | Register scratch, |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 927 | Register result, |
| 928 | Label* receiver_not_string, |
| 929 | Label* index_not_number, |
| 930 | Label* index_out_of_range, |
| 931 | StringIndexFlags index_flags) |
| 932 | : char_code_at_generator_(object, |
| 933 | index, |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 934 | scratch, |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 935 | receiver_not_string, |
| 936 | index_not_number, |
| 937 | index_out_of_range, |
| 938 | index_flags), |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 939 | char_from_code_generator_(scratch, result) {} |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 940 | |
| 941 | // Generates the fast case code. On the fallthrough path |result| |
| 942 | // register contains the result. |
| 943 | void GenerateFast(MacroAssembler* masm); |
| 944 | |
| 945 | // Generates the slow case code. Must not be naturally |
| 946 | // reachable. Expected to be put after a ret instruction (e.g., in |
| 947 | // deferred code). Always jumps back to the fast case. |
| 948 | void GenerateSlow(MacroAssembler* masm, |
| 949 | const RuntimeCallHelper& call_helper); |
| 950 | |
| 951 | private: |
| 952 | StringCharCodeAtGenerator char_code_at_generator_; |
| 953 | StringCharFromCodeGenerator char_from_code_generator_; |
| 954 | |
| 955 | DISALLOW_COPY_AND_ASSIGN(StringCharAtGenerator); |
| 956 | }; |
| 957 | |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 958 | |
| 959 | class AllowStubCallsScope { |
| 960 | public: |
| 961 | AllowStubCallsScope(MacroAssembler* masm, bool allow) |
| 962 | : masm_(masm), previous_allow_(masm->allow_stub_calls()) { |
| 963 | masm_->set_allow_stub_calls(allow); |
| 964 | } |
| 965 | ~AllowStubCallsScope() { |
| 966 | masm_->set_allow_stub_calls(previous_allow_); |
| 967 | } |
| 968 | |
| 969 | private: |
| 970 | MacroAssembler* masm_; |
| 971 | bool previous_allow_; |
| 972 | |
| 973 | DISALLOW_COPY_AND_ASSIGN(AllowStubCallsScope); |
| 974 | }; |
| 975 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 976 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 977 | class KeyedLoadElementStub : public CodeStub { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 978 | public: |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 979 | explicit KeyedLoadElementStub(ElementsKind elements_kind) |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 980 | : elements_kind_(elements_kind) |
| 981 | { } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 982 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 983 | Major MajorKey() { return KeyedLoadElement; } |
| 984 | int MinorKey() { return elements_kind_; } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 985 | |
| 986 | void Generate(MacroAssembler* masm); |
| 987 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 988 | private: |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 989 | ElementsKind elements_kind_; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 990 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 991 | DISALLOW_COPY_AND_ASSIGN(KeyedLoadElementStub); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 992 | }; |
| 993 | |
| 994 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 995 | class KeyedStoreElementStub : public CodeStub { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 996 | public: |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 997 | KeyedStoreElementStub(bool is_js_array, |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 998 | ElementsKind elements_kind, |
| 999 | KeyedAccessGrowMode grow_mode) |
| 1000 | : is_js_array_(is_js_array), |
| 1001 | elements_kind_(elements_kind), |
| 1002 | grow_mode_(grow_mode) { } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1003 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1004 | Major MajorKey() { return KeyedStoreElement; } |
| 1005 | int MinorKey() { |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 1006 | return ElementsKindBits::encode(elements_kind_) | |
| 1007 | IsJSArrayBits::encode(is_js_array_) | |
| 1008 | GrowModeBits::encode(grow_mode_); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1009 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1010 | |
| 1011 | void Generate(MacroAssembler* masm); |
| 1012 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1013 | private: |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 1014 | class ElementsKindBits: public BitField<ElementsKind, 0, 8> {}; |
| 1015 | class GrowModeBits: public BitField<KeyedAccessGrowMode, 8, 1> {}; |
| 1016 | class IsJSArrayBits: public BitField<bool, 9, 1> {}; |
| 1017 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1018 | bool is_js_array_; |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1019 | ElementsKind elements_kind_; |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 1020 | KeyedAccessGrowMode grow_mode_; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1021 | |
| 1022 | DISALLOW_COPY_AND_ASSIGN(KeyedStoreElementStub); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1023 | }; |
| 1024 | |
| 1025 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1026 | class ToBooleanStub: public CodeStub { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1027 | public: |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1028 | enum Type { |
| 1029 | UNDEFINED, |
| 1030 | BOOLEAN, |
| 1031 | NULL_TYPE, |
| 1032 | SMI, |
| 1033 | SPEC_OBJECT, |
| 1034 | STRING, |
| 1035 | HEAP_NUMBER, |
| 1036 | NUMBER_OF_TYPES |
| 1037 | }; |
| 1038 | |
| 1039 | // At most 8 different types can be distinguished, because the Code object |
| 1040 | // only has room for a single byte to hold a set of these types. :-P |
| 1041 | STATIC_ASSERT(NUMBER_OF_TYPES <= 8); |
| 1042 | |
| 1043 | class Types { |
| 1044 | public: |
| 1045 | Types() {} |
| 1046 | explicit Types(byte bits) : set_(bits) {} |
| 1047 | |
| 1048 | bool IsEmpty() const { return set_.IsEmpty(); } |
| 1049 | bool Contains(Type type) const { return set_.Contains(type); } |
| 1050 | void Add(Type type) { set_.Add(type); } |
| 1051 | byte ToByte() const { return set_.ToIntegral(); } |
| 1052 | void Print(StringStream* stream) const; |
| 1053 | void TraceTransition(Types to) const; |
| 1054 | bool Record(Handle<Object> object); |
| 1055 | bool NeedsMap() const; |
| 1056 | bool CanBeUndetectable() const; |
| 1057 | |
| 1058 | private: |
| 1059 | EnumSet<Type, byte> set_; |
| 1060 | }; |
| 1061 | |
| 1062 | static Types no_types() { return Types(); } |
| 1063 | static Types all_types() { return Types((1 << NUMBER_OF_TYPES) - 1); } |
| 1064 | |
| 1065 | explicit ToBooleanStub(Register tos, Types types = Types()) |
| 1066 | : tos_(tos), types_(types) { } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1067 | |
| 1068 | void Generate(MacroAssembler* masm); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1069 | virtual int GetCodeKind() { return Code::TO_BOOLEAN_IC; } |
| 1070 | virtual void PrintName(StringStream* stream); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1071 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 1072 | virtual bool SometimesSetsUpAFrame() { return false; } |
| 1073 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1074 | private: |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1075 | Major MajorKey() { return ToBoolean; } |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1076 | int MinorKey() { return (tos_.code() << NUMBER_OF_TYPES) | types_.ToByte(); } |
| 1077 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 1078 | virtual void FinishCode(Handle<Code> code) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1079 | code->set_to_boolean_state(types_.ToByte()); |
| 1080 | } |
| 1081 | |
| 1082 | void CheckOddball(MacroAssembler* masm, |
| 1083 | Type type, |
| 1084 | Heap::RootListIndex value, |
| 1085 | bool result); |
| 1086 | void GenerateTypeTransition(MacroAssembler* masm); |
| 1087 | |
| 1088 | Register tos_; |
| 1089 | Types types_; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1090 | }; |
| 1091 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 1092 | |
| 1093 | class ElementsTransitionAndStoreStub : public CodeStub { |
| 1094 | public: |
| 1095 | ElementsTransitionAndStoreStub(ElementsKind from, |
| 1096 | ElementsKind to, |
| 1097 | bool is_jsarray, |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 1098 | StrictModeFlag strict_mode, |
| 1099 | KeyedAccessGrowMode grow_mode) |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 1100 | : from_(from), |
| 1101 | to_(to), |
| 1102 | is_jsarray_(is_jsarray), |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 1103 | strict_mode_(strict_mode), |
| 1104 | grow_mode_(grow_mode) {} |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 1105 | |
| 1106 | private: |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 1107 | class FromBits: public BitField<ElementsKind, 0, 8> {}; |
| 1108 | class ToBits: public BitField<ElementsKind, 8, 8> {}; |
| 1109 | class IsJSArrayBits: public BitField<bool, 16, 1> {}; |
| 1110 | class StrictModeBits: public BitField<StrictModeFlag, 17, 1> {}; |
| 1111 | class GrowModeBits: public BitField<KeyedAccessGrowMode, 18, 1> {}; |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 1112 | |
| 1113 | Major MajorKey() { return ElementsTransitionAndStore; } |
| 1114 | int MinorKey() { |
| 1115 | return FromBits::encode(from_) | |
| 1116 | ToBits::encode(to_) | |
| 1117 | IsJSArrayBits::encode(is_jsarray_) | |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 1118 | StrictModeBits::encode(strict_mode_) | |
| 1119 | GrowModeBits::encode(grow_mode_); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 1120 | } |
| 1121 | |
| 1122 | void Generate(MacroAssembler* masm); |
| 1123 | |
| 1124 | ElementsKind from_; |
| 1125 | ElementsKind to_; |
| 1126 | bool is_jsarray_; |
| 1127 | StrictModeFlag strict_mode_; |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 1128 | KeyedAccessGrowMode grow_mode_; |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 1129 | |
| 1130 | DISALLOW_COPY_AND_ASSIGN(ElementsTransitionAndStoreStub); |
| 1131 | }; |
| 1132 | |
| 1133 | |
| 1134 | class StoreArrayLiteralElementStub : public CodeStub { |
| 1135 | public: |
| 1136 | explicit StoreArrayLiteralElementStub() {} |
| 1137 | |
| 1138 | private: |
| 1139 | Major MajorKey() { return StoreArrayLiteralElement; } |
| 1140 | int MinorKey() { return 0; } |
| 1141 | |
| 1142 | void Generate(MacroAssembler* masm); |
| 1143 | |
| 1144 | DISALLOW_COPY_AND_ASSIGN(StoreArrayLiteralElementStub); |
| 1145 | }; |
| 1146 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1147 | } } // namespace v8::internal |
| 1148 | |
| 1149 | #endif // V8_CODE_STUBS_H_ |