Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1 | // Copyright 2006-2008 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #ifndef V8_CODEGEN_H_ |
| 29 | #define V8_CODEGEN_H_ |
| 30 | |
| 31 | #include "ast.h" |
| 32 | #include "code-stubs.h" |
| 33 | #include "runtime.h" |
| 34 | |
| 35 | // Include the declaration of the architecture defined class CodeGenerator. |
| 36 | // The contract to the shared code is that the the CodeGenerator is a subclass |
| 37 | // of Visitor and that the following methods are available publicly: |
| 38 | // MakeCode |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 39 | // MakeCodePrologue |
| 40 | // MakeCodeEpilogue |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 41 | // masm |
| 42 | // frame |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 43 | // script |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 44 | // has_valid_frame |
| 45 | // SetFrame |
| 46 | // DeleteFrame |
| 47 | // allocator |
| 48 | // AddDeferred |
| 49 | // in_spilled_code |
| 50 | // set_in_spilled_code |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 51 | // RecordPositions |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 52 | // |
| 53 | // These methods are either used privately by the shared code or implemented as |
| 54 | // shared code: |
| 55 | // CodeGenerator |
| 56 | // ~CodeGenerator |
| 57 | // ProcessDeferred |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame^] | 58 | // Generate |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 59 | // ComputeLazyCompile |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 60 | // BuildBoilerplate |
| 61 | // ComputeCallInitialize |
| 62 | // ComputeCallInitializeInLoop |
| 63 | // ProcessDeclarations |
| 64 | // DeclareGlobals |
| 65 | // FindInlineRuntimeLUT |
| 66 | // CheckForInlineRuntimeCall |
| 67 | // PatchInlineRuntimeEntry |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 68 | // AnalyzeCondition |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 69 | // CodeForFunctionPosition |
| 70 | // CodeForReturnPosition |
| 71 | // CodeForStatementPosition |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 72 | // CodeForDoWhileConditionPosition |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 73 | // CodeForSourcePosition |
| 74 | |
| 75 | |
| 76 | // Mode to overwrite BinaryExpression values. |
| 77 | enum OverwriteMode { NO_OVERWRITE, OVERWRITE_LEFT, OVERWRITE_RIGHT }; |
| 78 | |
| 79 | // Types of uncatchable exceptions. |
| 80 | enum UncatchableExceptionType { OUT_OF_MEMORY, TERMINATION }; |
| 81 | |
| 82 | |
| 83 | #if V8_TARGET_ARCH_IA32 |
| 84 | #include "ia32/codegen-ia32.h" |
| 85 | #elif V8_TARGET_ARCH_X64 |
| 86 | #include "x64/codegen-x64.h" |
| 87 | #elif V8_TARGET_ARCH_ARM |
| 88 | #include "arm/codegen-arm.h" |
| 89 | #else |
| 90 | #error Unsupported target architecture. |
| 91 | #endif |
| 92 | |
| 93 | #include "register-allocator.h" |
| 94 | |
| 95 | namespace v8 { |
| 96 | namespace internal { |
| 97 | |
| 98 | |
| 99 | // Code generation can be nested. Code generation scopes form a stack |
| 100 | // of active code generators. |
| 101 | class CodeGeneratorScope BASE_EMBEDDED { |
| 102 | public: |
| 103 | explicit CodeGeneratorScope(CodeGenerator* cgen) { |
| 104 | previous_ = top_; |
| 105 | top_ = cgen; |
| 106 | } |
| 107 | |
| 108 | ~CodeGeneratorScope() { |
| 109 | top_ = previous_; |
| 110 | } |
| 111 | |
| 112 | static CodeGenerator* Current() { |
| 113 | ASSERT(top_ != NULL); |
| 114 | return top_; |
| 115 | } |
| 116 | |
| 117 | private: |
| 118 | static CodeGenerator* top_; |
| 119 | CodeGenerator* previous_; |
| 120 | }; |
| 121 | |
| 122 | |
| 123 | // Deferred code objects are small pieces of code that are compiled |
| 124 | // out of line. They are used to defer the compilation of uncommon |
| 125 | // paths thereby avoiding expensive jumps around uncommon code parts. |
| 126 | class DeferredCode: public ZoneObject { |
| 127 | public: |
| 128 | DeferredCode(); |
| 129 | virtual ~DeferredCode() { } |
| 130 | |
| 131 | virtual void Generate() = 0; |
| 132 | |
| 133 | MacroAssembler* masm() { return masm_; } |
| 134 | |
| 135 | int statement_position() const { return statement_position_; } |
| 136 | int position() const { return position_; } |
| 137 | |
| 138 | Label* entry_label() { return &entry_label_; } |
| 139 | Label* exit_label() { return &exit_label_; } |
| 140 | |
| 141 | #ifdef DEBUG |
| 142 | void set_comment(const char* comment) { comment_ = comment; } |
| 143 | const char* comment() const { return comment_; } |
| 144 | #else |
| 145 | void set_comment(const char* comment) { } |
| 146 | const char* comment() const { return ""; } |
| 147 | #endif |
| 148 | |
| 149 | inline void Jump(); |
| 150 | inline void Branch(Condition cc); |
| 151 | void BindExit() { masm_->bind(&exit_label_); } |
| 152 | |
| 153 | void SaveRegisters(); |
| 154 | void RestoreRegisters(); |
| 155 | |
| 156 | protected: |
| 157 | MacroAssembler* masm_; |
| 158 | |
| 159 | private: |
| 160 | // Constants indicating special actions. They should not be multiples |
| 161 | // of kPointerSize so they will not collide with valid offsets from |
| 162 | // the frame pointer. |
| 163 | static const int kIgnore = -1; |
| 164 | static const int kPush = 1; |
| 165 | |
| 166 | // This flag is ored with a valid offset from the frame pointer, so |
| 167 | // it should fit in the low zero bits of a valid offset. |
| 168 | static const int kSyncedFlag = 2; |
| 169 | |
| 170 | int statement_position_; |
| 171 | int position_; |
| 172 | |
| 173 | Label entry_label_; |
| 174 | Label exit_label_; |
| 175 | |
| 176 | int registers_[RegisterAllocator::kNumRegisters]; |
| 177 | |
| 178 | #ifdef DEBUG |
| 179 | const char* comment_; |
| 180 | #endif |
| 181 | DISALLOW_COPY_AND_ASSIGN(DeferredCode); |
| 182 | }; |
| 183 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 184 | class StackCheckStub : public CodeStub { |
| 185 | public: |
| 186 | StackCheckStub() { } |
| 187 | |
| 188 | void Generate(MacroAssembler* masm); |
| 189 | |
| 190 | private: |
| 191 | |
| 192 | const char* GetName() { return "StackCheckStub"; } |
| 193 | |
| 194 | Major MajorKey() { return StackCheck; } |
| 195 | int MinorKey() { return 0; } |
| 196 | }; |
| 197 | |
| 198 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 199 | class FastNewClosureStub : public CodeStub { |
| 200 | public: |
| 201 | void Generate(MacroAssembler* masm); |
| 202 | |
| 203 | private: |
| 204 | const char* GetName() { return "FastNewClosureStub"; } |
| 205 | Major MajorKey() { return FastNewClosure; } |
| 206 | int MinorKey() { return 0; } |
| 207 | }; |
| 208 | |
| 209 | |
| 210 | class FastNewContextStub : public CodeStub { |
| 211 | public: |
| 212 | static const int kMaximumSlots = 64; |
| 213 | |
| 214 | explicit FastNewContextStub(int slots) : slots_(slots) { |
| 215 | ASSERT(slots_ > 0 && slots <= kMaximumSlots); |
| 216 | } |
| 217 | |
| 218 | void Generate(MacroAssembler* masm); |
| 219 | |
| 220 | private: |
| 221 | int slots_; |
| 222 | |
| 223 | const char* GetName() { return "FastNewContextStub"; } |
| 224 | Major MajorKey() { return FastNewContext; } |
| 225 | int MinorKey() { return slots_; } |
| 226 | }; |
| 227 | |
| 228 | |
| 229 | class FastCloneShallowArrayStub : public CodeStub { |
| 230 | public: |
| 231 | static const int kMaximumLength = 8; |
| 232 | |
| 233 | explicit FastCloneShallowArrayStub(int length) : length_(length) { |
| 234 | ASSERT(length >= 0 && length <= kMaximumLength); |
| 235 | } |
| 236 | |
| 237 | void Generate(MacroAssembler* masm); |
| 238 | |
| 239 | private: |
| 240 | int length_; |
| 241 | |
| 242 | const char* GetName() { return "FastCloneShallowArrayStub"; } |
| 243 | Major MajorKey() { return FastCloneShallowArray; } |
| 244 | int MinorKey() { return length_; } |
| 245 | }; |
| 246 | |
| 247 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 248 | class InstanceofStub: public CodeStub { |
| 249 | public: |
| 250 | InstanceofStub() { } |
| 251 | |
| 252 | void Generate(MacroAssembler* masm); |
| 253 | |
| 254 | private: |
| 255 | Major MajorKey() { return Instanceof; } |
| 256 | int MinorKey() { return 0; } |
| 257 | }; |
| 258 | |
| 259 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 260 | class GenericUnaryOpStub : public CodeStub { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 261 | public: |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 262 | GenericUnaryOpStub(Token::Value op, bool overwrite) |
| 263 | : op_(op), overwrite_(overwrite) { } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 264 | |
| 265 | private: |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 266 | Token::Value op_; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 267 | bool overwrite_; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 268 | |
| 269 | class OverwriteField: public BitField<int, 0, 1> {}; |
| 270 | class OpField: public BitField<Token::Value, 1, kMinorBits - 1> {}; |
| 271 | |
| 272 | Major MajorKey() { return GenericUnaryOp; } |
| 273 | int MinorKey() { |
| 274 | return OpField::encode(op_) | OverwriteField::encode(overwrite_); |
| 275 | } |
| 276 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 277 | void Generate(MacroAssembler* masm); |
| 278 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 279 | const char* GetName(); |
| 280 | }; |
| 281 | |
| 282 | |
| 283 | enum NaNInformation { |
| 284 | kBothCouldBeNaN, |
| 285 | kCantBothBeNaN |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 286 | }; |
| 287 | |
| 288 | |
| 289 | class CompareStub: public CodeStub { |
| 290 | public: |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 291 | CompareStub(Condition cc, |
| 292 | bool strict, |
| 293 | NaNInformation nan_info = kBothCouldBeNaN) : |
| 294 | cc_(cc), strict_(strict), never_nan_nan_(nan_info == kCantBothBeNaN) { } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 295 | |
| 296 | void Generate(MacroAssembler* masm); |
| 297 | |
| 298 | private: |
| 299 | Condition cc_; |
| 300 | bool strict_; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 301 | // Only used for 'equal' comparisons. Tells the stub that we already know |
| 302 | // that at least one side of the comparison is not NaN. This allows the |
| 303 | // stub to use object identity in the positive case. We ignore it when |
| 304 | // generating the minor key for other comparisons to avoid creating more |
| 305 | // stubs. |
| 306 | bool never_nan_nan_; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 307 | |
| 308 | Major MajorKey() { return Compare; } |
| 309 | |
| 310 | int MinorKey(); |
| 311 | |
| 312 | // Branch to the label if the given object isn't a symbol. |
| 313 | void BranchIfNonSymbol(MacroAssembler* masm, |
| 314 | Label* label, |
| 315 | Register object, |
| 316 | Register scratch); |
| 317 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 318 | // Unfortunately you have to run without snapshots to see most of these |
| 319 | // names in the profile since most compare stubs end up in the snapshot. |
| 320 | const char* GetName(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 321 | #ifdef DEBUG |
| 322 | void Print() { |
| 323 | PrintF("CompareStub (cc %d), (strict %s)\n", |
| 324 | static_cast<int>(cc_), |
| 325 | strict_ ? "true" : "false"); |
| 326 | } |
| 327 | #endif |
| 328 | }; |
| 329 | |
| 330 | |
| 331 | class CEntryStub : public CodeStub { |
| 332 | public: |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame^] | 333 | explicit CEntryStub(int result_size, |
| 334 | ExitFrame::Mode mode = ExitFrame::MODE_NORMAL) |
| 335 | : result_size_(result_size), mode_(mode) { } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 336 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame^] | 337 | void Generate(MacroAssembler* masm); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 338 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame^] | 339 | private: |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 340 | void GenerateCore(MacroAssembler* masm, |
| 341 | Label* throw_normal_exception, |
| 342 | Label* throw_termination_exception, |
| 343 | Label* throw_out_of_memory_exception, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 344 | bool do_gc, |
| 345 | bool always_allocate_scope); |
| 346 | void GenerateThrowTOS(MacroAssembler* masm); |
| 347 | void GenerateThrowUncatchable(MacroAssembler* masm, |
| 348 | UncatchableExceptionType type); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame^] | 349 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 350 | // Number of pointers/values returned. |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame^] | 351 | const int result_size_; |
| 352 | const ExitFrame::Mode mode_; |
| 353 | |
| 354 | // Minor key encoding |
| 355 | class ExitFrameModeBits: public BitField<ExitFrame::Mode, 0, 1> {}; |
| 356 | class IndirectResultBits: public BitField<bool, 1, 1> {}; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 357 | |
| 358 | Major MajorKey() { return CEntry; } |
| 359 | // Minor key must differ if different result_size_ values means different |
| 360 | // code is generated. |
| 361 | int MinorKey(); |
| 362 | |
| 363 | const char* GetName() { return "CEntryStub"; } |
| 364 | }; |
| 365 | |
| 366 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 367 | class ApiGetterEntryStub : public CodeStub { |
| 368 | public: |
| 369 | ApiGetterEntryStub(Handle<AccessorInfo> info, |
| 370 | ApiFunction* fun) |
| 371 | : info_(info), |
| 372 | fun_(fun) { } |
| 373 | void Generate(MacroAssembler* masm); |
| 374 | virtual bool has_custom_cache() { return true; } |
| 375 | virtual bool GetCustomCache(Code** code_out); |
| 376 | virtual void SetCustomCache(Code* value); |
| 377 | |
| 378 | static const int kStackSpace = 6; |
| 379 | static const int kArgc = 4; |
| 380 | private: |
| 381 | Handle<AccessorInfo> info() { return info_; } |
| 382 | ApiFunction* fun() { return fun_; } |
| 383 | Major MajorKey() { return NoCache; } |
| 384 | int MinorKey() { return 0; } |
| 385 | const char* GetName() { return "ApiEntryStub"; } |
| 386 | // The accessor info associated with the function. |
| 387 | Handle<AccessorInfo> info_; |
| 388 | // The function to be called. |
| 389 | ApiFunction* fun_; |
| 390 | }; |
| 391 | |
| 392 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame^] | 393 | // Mark the debugger statement to be recognized by debugger (by the MajorKey) |
| 394 | class DebuggerStatementStub : public CodeStub { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 395 | public: |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame^] | 396 | DebuggerStatementStub() { } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 397 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame^] | 398 | void Generate(MacroAssembler* masm); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 399 | |
| 400 | private: |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame^] | 401 | Major MajorKey() { return DebuggerStatement; } |
| 402 | int MinorKey() { return 0; } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 403 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame^] | 404 | const char* GetName() { return "DebuggerStatementStub"; } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 405 | }; |
| 406 | |
| 407 | |
| 408 | class JSEntryStub : public CodeStub { |
| 409 | public: |
| 410 | JSEntryStub() { } |
| 411 | |
| 412 | void Generate(MacroAssembler* masm) { GenerateBody(masm, false); } |
| 413 | |
| 414 | protected: |
| 415 | void GenerateBody(MacroAssembler* masm, bool is_construct); |
| 416 | |
| 417 | private: |
| 418 | Major MajorKey() { return JSEntry; } |
| 419 | int MinorKey() { return 0; } |
| 420 | |
| 421 | const char* GetName() { return "JSEntryStub"; } |
| 422 | }; |
| 423 | |
| 424 | |
| 425 | class JSConstructEntryStub : public JSEntryStub { |
| 426 | public: |
| 427 | JSConstructEntryStub() { } |
| 428 | |
| 429 | void Generate(MacroAssembler* masm) { GenerateBody(masm, true); } |
| 430 | |
| 431 | private: |
| 432 | int MinorKey() { return 1; } |
| 433 | |
| 434 | const char* GetName() { return "JSConstructEntryStub"; } |
| 435 | }; |
| 436 | |
| 437 | |
| 438 | class ArgumentsAccessStub: public CodeStub { |
| 439 | public: |
| 440 | enum Type { |
| 441 | READ_LENGTH, |
| 442 | READ_ELEMENT, |
| 443 | NEW_OBJECT |
| 444 | }; |
| 445 | |
| 446 | explicit ArgumentsAccessStub(Type type) : type_(type) { } |
| 447 | |
| 448 | private: |
| 449 | Type type_; |
| 450 | |
| 451 | Major MajorKey() { return ArgumentsAccess; } |
| 452 | int MinorKey() { return type_; } |
| 453 | |
| 454 | void Generate(MacroAssembler* masm); |
| 455 | void GenerateReadLength(MacroAssembler* masm); |
| 456 | void GenerateReadElement(MacroAssembler* masm); |
| 457 | void GenerateNewObject(MacroAssembler* masm); |
| 458 | |
| 459 | const char* GetName() { return "ArgumentsAccessStub"; } |
| 460 | |
| 461 | #ifdef DEBUG |
| 462 | void Print() { |
| 463 | PrintF("ArgumentsAccessStub (type %d)\n", type_); |
| 464 | } |
| 465 | #endif |
| 466 | }; |
| 467 | |
| 468 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 469 | class RegExpExecStub: public CodeStub { |
| 470 | public: |
| 471 | RegExpExecStub() { } |
| 472 | |
| 473 | private: |
| 474 | Major MajorKey() { return RegExpExec; } |
| 475 | int MinorKey() { return 0; } |
| 476 | |
| 477 | void Generate(MacroAssembler* masm); |
| 478 | |
| 479 | const char* GetName() { return "RegExpExecStub"; } |
| 480 | |
| 481 | #ifdef DEBUG |
| 482 | void Print() { |
| 483 | PrintF("RegExpExecStub\n"); |
| 484 | } |
| 485 | #endif |
| 486 | }; |
| 487 | |
| 488 | |
| 489 | class CallFunctionStub: public CodeStub { |
| 490 | public: |
| 491 | CallFunctionStub(int argc, InLoopFlag in_loop, CallFunctionFlags flags) |
| 492 | : argc_(argc), in_loop_(in_loop), flags_(flags) { } |
| 493 | |
| 494 | void Generate(MacroAssembler* masm); |
| 495 | |
| 496 | private: |
| 497 | int argc_; |
| 498 | InLoopFlag in_loop_; |
| 499 | CallFunctionFlags flags_; |
| 500 | |
| 501 | #ifdef DEBUG |
| 502 | void Print() { |
| 503 | PrintF("CallFunctionStub (args %d, in_loop %d, flags %d)\n", |
| 504 | argc_, |
| 505 | static_cast<int>(in_loop_), |
| 506 | static_cast<int>(flags_)); |
| 507 | } |
| 508 | #endif |
| 509 | |
| 510 | // Minor key encoding in 31 bits AAAAAAAAAAAAAAAAAAAAAFI A(rgs)F(lag)I(nloop). |
| 511 | class InLoopBits: public BitField<InLoopFlag, 0, 1> {}; |
| 512 | class FlagBits: public BitField<CallFunctionFlags, 1, 1> {}; |
| 513 | class ArgcBits: public BitField<int, 2, 29> {}; |
| 514 | |
| 515 | Major MajorKey() { return CallFunction; } |
| 516 | int MinorKey() { |
| 517 | // Encode the parameters in a unique 31 bit value. |
| 518 | return InLoopBits::encode(in_loop_) |
| 519 | | FlagBits::encode(flags_) |
| 520 | | ArgcBits::encode(argc_); |
| 521 | } |
| 522 | |
| 523 | InLoopFlag InLoop() { return in_loop_; } |
| 524 | bool ReceiverMightBeValue() { |
| 525 | return (flags_ & RECEIVER_MIGHT_BE_VALUE) != 0; |
| 526 | } |
| 527 | |
| 528 | public: |
| 529 | static int ExtractArgcFromMinorKey(int minor_key) { |
| 530 | return ArgcBits::decode(minor_key); |
| 531 | } |
| 532 | }; |
| 533 | |
| 534 | |
| 535 | class ToBooleanStub: public CodeStub { |
| 536 | public: |
| 537 | ToBooleanStub() { } |
| 538 | |
| 539 | void Generate(MacroAssembler* masm); |
| 540 | |
| 541 | private: |
| 542 | Major MajorKey() { return ToBoolean; } |
| 543 | int MinorKey() { return 0; } |
| 544 | }; |
| 545 | |
| 546 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 547 | } // namespace internal |
| 548 | } // namespace v8 |
| 549 | |
| 550 | #endif // V8_CODEGEN_H_ |