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" |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 34 | #include "type-info.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 35 | |
| 36 | // Include the declaration of the architecture defined class CodeGenerator. |
| 37 | // The contract to the shared code is that the the CodeGenerator is a subclass |
| 38 | // of Visitor and that the following methods are available publicly: |
| 39 | // MakeCode |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 40 | // MakeCodePrologue |
| 41 | // MakeCodeEpilogue |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 42 | // masm |
| 43 | // frame |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 44 | // script |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 45 | // has_valid_frame |
| 46 | // SetFrame |
| 47 | // DeleteFrame |
| 48 | // allocator |
| 49 | // AddDeferred |
| 50 | // in_spilled_code |
| 51 | // set_in_spilled_code |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 52 | // RecordPositions |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 53 | // |
| 54 | // These methods are either used privately by the shared code or implemented as |
| 55 | // shared code: |
| 56 | // CodeGenerator |
| 57 | // ~CodeGenerator |
| 58 | // ProcessDeferred |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 59 | // Generate |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 60 | // ComputeLazyCompile |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 61 | // BuildFunctionInfo |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 62 | // ComputeCallInitialize |
| 63 | // ComputeCallInitializeInLoop |
| 64 | // ProcessDeclarations |
| 65 | // DeclareGlobals |
| 66 | // FindInlineRuntimeLUT |
| 67 | // CheckForInlineRuntimeCall |
| 68 | // PatchInlineRuntimeEntry |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 69 | // AnalyzeCondition |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 70 | // CodeForFunctionPosition |
| 71 | // CodeForReturnPosition |
| 72 | // CodeForStatementPosition |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 73 | // CodeForDoWhileConditionPosition |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 74 | // CodeForSourcePosition |
| 75 | |
| 76 | |
| 77 | // Mode to overwrite BinaryExpression values. |
| 78 | enum OverwriteMode { NO_OVERWRITE, OVERWRITE_LEFT, OVERWRITE_RIGHT }; |
| 79 | |
| 80 | // Types of uncatchable exceptions. |
| 81 | enum UncatchableExceptionType { OUT_OF_MEMORY, TERMINATION }; |
| 82 | |
| 83 | |
| 84 | #if V8_TARGET_ARCH_IA32 |
| 85 | #include "ia32/codegen-ia32.h" |
| 86 | #elif V8_TARGET_ARCH_X64 |
| 87 | #include "x64/codegen-x64.h" |
| 88 | #elif V8_TARGET_ARCH_ARM |
| 89 | #include "arm/codegen-arm.h" |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 90 | #elif V8_TARGET_ARCH_MIPS |
| 91 | #include "mips/codegen-mips.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 92 | #else |
| 93 | #error Unsupported target architecture. |
| 94 | #endif |
| 95 | |
| 96 | #include "register-allocator.h" |
| 97 | |
| 98 | namespace v8 { |
| 99 | namespace internal { |
| 100 | |
| 101 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 102 | #define INLINE_RUNTIME_FUNCTION_LIST(F) \ |
| 103 | F(IsSmi, 1, 1) \ |
| 104 | F(IsNonNegativeSmi, 1, 1) \ |
| 105 | F(IsArray, 1, 1) \ |
| 106 | F(IsRegExp, 1, 1) \ |
| 107 | F(CallFunction, -1 /* receiver + n args + function */, 1) \ |
| 108 | F(IsConstructCall, 0, 1) \ |
| 109 | F(ArgumentsLength, 0, 1) \ |
| 110 | F(Arguments, 1, 1) \ |
| 111 | F(ClassOf, 1, 1) \ |
| 112 | F(ValueOf, 1, 1) \ |
| 113 | F(SetValueOf, 2, 1) \ |
| 114 | F(FastCharCodeAt, 2, 1) \ |
| 115 | F(CharFromCode, 1, 1) \ |
| 116 | F(ObjectEquals, 2, 1) \ |
| 117 | F(Log, 3, 1) \ |
| 118 | F(RandomHeapNumber, 0, 1) \ |
| 119 | F(IsObject, 1, 1) \ |
| 120 | F(IsFunction, 1, 1) \ |
| 121 | F(IsUndetectableObject, 1, 1) \ |
| 122 | F(StringAdd, 2, 1) \ |
| 123 | F(SubString, 3, 1) \ |
| 124 | F(StringCompare, 2, 1) \ |
| 125 | F(RegExpExec, 4, 1) \ |
| 126 | F(RegExpConstructResult, 3, 1) \ |
| 127 | F(GetFromCache, 2, 1) \ |
| 128 | F(NumberToString, 1, 1) \ |
| 129 | F(SwapElements, 3, 1) \ |
| 130 | F(MathPow, 2, 1) \ |
| 131 | F(MathSin, 1, 1) \ |
| 132 | F(MathCos, 1, 1) \ |
| 133 | F(MathSqrt, 1, 1) |
| 134 | |
| 135 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 136 | // Support for "structured" code comments. |
| 137 | #ifdef DEBUG |
| 138 | |
| 139 | class Comment BASE_EMBEDDED { |
| 140 | public: |
| 141 | Comment(MacroAssembler* masm, const char* msg); |
| 142 | ~Comment(); |
| 143 | |
| 144 | private: |
| 145 | MacroAssembler* masm_; |
| 146 | const char* msg_; |
| 147 | }; |
| 148 | |
| 149 | #else |
| 150 | |
| 151 | class Comment BASE_EMBEDDED { |
| 152 | public: |
| 153 | Comment(MacroAssembler*, const char*) {} |
| 154 | }; |
| 155 | |
| 156 | #endif // DEBUG |
| 157 | |
| 158 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 159 | // Code generation can be nested. Code generation scopes form a stack |
| 160 | // of active code generators. |
| 161 | class CodeGeneratorScope BASE_EMBEDDED { |
| 162 | public: |
| 163 | explicit CodeGeneratorScope(CodeGenerator* cgen) { |
| 164 | previous_ = top_; |
| 165 | top_ = cgen; |
| 166 | } |
| 167 | |
| 168 | ~CodeGeneratorScope() { |
| 169 | top_ = previous_; |
| 170 | } |
| 171 | |
| 172 | static CodeGenerator* Current() { |
| 173 | ASSERT(top_ != NULL); |
| 174 | return top_; |
| 175 | } |
| 176 | |
| 177 | private: |
| 178 | static CodeGenerator* top_; |
| 179 | CodeGenerator* previous_; |
| 180 | }; |
| 181 | |
| 182 | |
| 183 | // Deferred code objects are small pieces of code that are compiled |
| 184 | // out of line. They are used to defer the compilation of uncommon |
| 185 | // paths thereby avoiding expensive jumps around uncommon code parts. |
| 186 | class DeferredCode: public ZoneObject { |
| 187 | public: |
| 188 | DeferredCode(); |
| 189 | virtual ~DeferredCode() { } |
| 190 | |
| 191 | virtual void Generate() = 0; |
| 192 | |
| 193 | MacroAssembler* masm() { return masm_; } |
| 194 | |
| 195 | int statement_position() const { return statement_position_; } |
| 196 | int position() const { return position_; } |
| 197 | |
| 198 | Label* entry_label() { return &entry_label_; } |
| 199 | Label* exit_label() { return &exit_label_; } |
| 200 | |
| 201 | #ifdef DEBUG |
| 202 | void set_comment(const char* comment) { comment_ = comment; } |
| 203 | const char* comment() const { return comment_; } |
| 204 | #else |
| 205 | void set_comment(const char* comment) { } |
| 206 | const char* comment() const { return ""; } |
| 207 | #endif |
| 208 | |
| 209 | inline void Jump(); |
| 210 | inline void Branch(Condition cc); |
| 211 | void BindExit() { masm_->bind(&exit_label_); } |
| 212 | |
| 213 | void SaveRegisters(); |
| 214 | void RestoreRegisters(); |
| 215 | |
| 216 | protected: |
| 217 | MacroAssembler* masm_; |
| 218 | |
| 219 | private: |
| 220 | // Constants indicating special actions. They should not be multiples |
| 221 | // of kPointerSize so they will not collide with valid offsets from |
| 222 | // the frame pointer. |
| 223 | static const int kIgnore = -1; |
| 224 | static const int kPush = 1; |
| 225 | |
| 226 | // This flag is ored with a valid offset from the frame pointer, so |
| 227 | // it should fit in the low zero bits of a valid offset. |
| 228 | static const int kSyncedFlag = 2; |
| 229 | |
| 230 | int statement_position_; |
| 231 | int position_; |
| 232 | |
| 233 | Label entry_label_; |
| 234 | Label exit_label_; |
| 235 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 236 | // C++ doesn't allow zero length arrays, so we make the array length 1 even |
| 237 | // if we don't need it. |
| 238 | static const int kRegistersArrayLength = |
| 239 | (RegisterAllocator::kNumRegisters == 0) ? |
| 240 | 1 : RegisterAllocator::kNumRegisters; |
| 241 | int registers_[kRegistersArrayLength]; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 242 | |
| 243 | #ifdef DEBUG |
| 244 | const char* comment_; |
| 245 | #endif |
| 246 | DISALLOW_COPY_AND_ASSIGN(DeferredCode); |
| 247 | }; |
| 248 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 249 | class StackCheckStub : public CodeStub { |
| 250 | public: |
| 251 | StackCheckStub() { } |
| 252 | |
| 253 | void Generate(MacroAssembler* masm); |
| 254 | |
| 255 | private: |
| 256 | |
| 257 | const char* GetName() { return "StackCheckStub"; } |
| 258 | |
| 259 | Major MajorKey() { return StackCheck; } |
| 260 | int MinorKey() { return 0; } |
| 261 | }; |
| 262 | |
| 263 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 264 | class FastNewClosureStub : public CodeStub { |
| 265 | public: |
| 266 | void Generate(MacroAssembler* masm); |
| 267 | |
| 268 | private: |
| 269 | const char* GetName() { return "FastNewClosureStub"; } |
| 270 | Major MajorKey() { return FastNewClosure; } |
| 271 | int MinorKey() { return 0; } |
| 272 | }; |
| 273 | |
| 274 | |
| 275 | class FastNewContextStub : public CodeStub { |
| 276 | public: |
| 277 | static const int kMaximumSlots = 64; |
| 278 | |
| 279 | explicit FastNewContextStub(int slots) : slots_(slots) { |
| 280 | ASSERT(slots_ > 0 && slots <= kMaximumSlots); |
| 281 | } |
| 282 | |
| 283 | void Generate(MacroAssembler* masm); |
| 284 | |
| 285 | private: |
| 286 | int slots_; |
| 287 | |
| 288 | const char* GetName() { return "FastNewContextStub"; } |
| 289 | Major MajorKey() { return FastNewContext; } |
| 290 | int MinorKey() { return slots_; } |
| 291 | }; |
| 292 | |
| 293 | |
| 294 | class FastCloneShallowArrayStub : public CodeStub { |
| 295 | public: |
| 296 | static const int kMaximumLength = 8; |
| 297 | |
| 298 | explicit FastCloneShallowArrayStub(int length) : length_(length) { |
| 299 | ASSERT(length >= 0 && length <= kMaximumLength); |
| 300 | } |
| 301 | |
| 302 | void Generate(MacroAssembler* masm); |
| 303 | |
| 304 | private: |
| 305 | int length_; |
| 306 | |
| 307 | const char* GetName() { return "FastCloneShallowArrayStub"; } |
| 308 | Major MajorKey() { return FastCloneShallowArray; } |
| 309 | int MinorKey() { return length_; } |
| 310 | }; |
| 311 | |
| 312 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 313 | class InstanceofStub: public CodeStub { |
| 314 | public: |
| 315 | InstanceofStub() { } |
| 316 | |
| 317 | void Generate(MacroAssembler* masm); |
| 318 | |
| 319 | private: |
| 320 | Major MajorKey() { return Instanceof; } |
| 321 | int MinorKey() { return 0; } |
| 322 | }; |
| 323 | |
| 324 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 325 | class GenericUnaryOpStub : public CodeStub { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 326 | public: |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 327 | GenericUnaryOpStub(Token::Value op, bool overwrite) |
| 328 | : op_(op), overwrite_(overwrite) { } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 329 | |
| 330 | private: |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 331 | Token::Value op_; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 332 | bool overwrite_; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 333 | |
| 334 | class OverwriteField: public BitField<int, 0, 1> {}; |
| 335 | class OpField: public BitField<Token::Value, 1, kMinorBits - 1> {}; |
| 336 | |
| 337 | Major MajorKey() { return GenericUnaryOp; } |
| 338 | int MinorKey() { |
| 339 | return OpField::encode(op_) | OverwriteField::encode(overwrite_); |
| 340 | } |
| 341 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 342 | void Generate(MacroAssembler* masm); |
| 343 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 344 | const char* GetName(); |
| 345 | }; |
| 346 | |
| 347 | |
| 348 | enum NaNInformation { |
| 349 | kBothCouldBeNaN, |
| 350 | kCantBothBeNaN |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 351 | }; |
| 352 | |
| 353 | |
| 354 | class CompareStub: public CodeStub { |
| 355 | public: |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 356 | CompareStub(Condition cc, |
| 357 | bool strict, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 358 | NaNInformation nan_info = kBothCouldBeNaN, |
| 359 | bool include_number_compare = true) : |
| 360 | cc_(cc), |
| 361 | strict_(strict), |
| 362 | never_nan_nan_(nan_info == kCantBothBeNaN), |
| 363 | include_number_compare_(include_number_compare), |
| 364 | name_(NULL) { } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 365 | |
| 366 | void Generate(MacroAssembler* masm); |
| 367 | |
| 368 | private: |
| 369 | Condition cc_; |
| 370 | bool strict_; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 371 | // Only used for 'equal' comparisons. Tells the stub that we already know |
| 372 | // that at least one side of the comparison is not NaN. This allows the |
| 373 | // stub to use object identity in the positive case. We ignore it when |
| 374 | // generating the minor key for other comparisons to avoid creating more |
| 375 | // stubs. |
| 376 | bool never_nan_nan_; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 377 | // Do generate the number comparison code in the stub. Stubs without number |
| 378 | // comparison code is used when the number comparison has been inlined, and |
| 379 | // the stub will be called if one of the operands is not a number. |
| 380 | bool include_number_compare_; |
| 381 | |
| 382 | // Encoding of the minor key CCCCCCCCCCCCCCNS. |
| 383 | class StrictField: public BitField<bool, 0, 1> {}; |
| 384 | class NeverNanNanField: public BitField<bool, 1, 1> {}; |
| 385 | class IncludeNumberCompareField: public BitField<bool, 2, 1> {}; |
| 386 | class ConditionField: public BitField<int, 3, 13> {}; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 387 | |
| 388 | Major MajorKey() { return Compare; } |
| 389 | |
| 390 | int MinorKey(); |
| 391 | |
| 392 | // Branch to the label if the given object isn't a symbol. |
| 393 | void BranchIfNonSymbol(MacroAssembler* masm, |
| 394 | Label* label, |
| 395 | Register object, |
| 396 | Register scratch); |
| 397 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 398 | // Unfortunately you have to run without snapshots to see most of these |
| 399 | // names in the profile since most compare stubs end up in the snapshot. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 400 | char* name_; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 401 | const char* GetName(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 402 | #ifdef DEBUG |
| 403 | void Print() { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 404 | PrintF("CompareStub (cc %d), (strict %s), " |
| 405 | "(never_nan_nan %s), (number_compare %s)\n", |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 406 | static_cast<int>(cc_), |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 407 | strict_ ? "true" : "false", |
| 408 | never_nan_nan_ ? "true" : "false", |
| 409 | include_number_compare_ ? "included" : "not included"); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 410 | } |
| 411 | #endif |
| 412 | }; |
| 413 | |
| 414 | |
| 415 | class CEntryStub : public CodeStub { |
| 416 | public: |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 417 | explicit CEntryStub(int result_size, |
| 418 | ExitFrame::Mode mode = ExitFrame::MODE_NORMAL) |
| 419 | : result_size_(result_size), mode_(mode) { } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 420 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 421 | void Generate(MacroAssembler* masm); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 422 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 423 | private: |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 424 | void GenerateCore(MacroAssembler* masm, |
| 425 | Label* throw_normal_exception, |
| 426 | Label* throw_termination_exception, |
| 427 | Label* throw_out_of_memory_exception, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 428 | bool do_gc, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 429 | bool always_allocate_scope, |
| 430 | int alignment_skew = 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 431 | void GenerateThrowTOS(MacroAssembler* masm); |
| 432 | void GenerateThrowUncatchable(MacroAssembler* masm, |
| 433 | UncatchableExceptionType type); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 434 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 435 | // Number of pointers/values returned. |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 436 | const int result_size_; |
| 437 | const ExitFrame::Mode mode_; |
| 438 | |
| 439 | // Minor key encoding |
| 440 | class ExitFrameModeBits: public BitField<ExitFrame::Mode, 0, 1> {}; |
| 441 | class IndirectResultBits: public BitField<bool, 1, 1> {}; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 442 | |
| 443 | Major MajorKey() { return CEntry; } |
| 444 | // Minor key must differ if different result_size_ values means different |
| 445 | // code is generated. |
| 446 | int MinorKey(); |
| 447 | |
| 448 | const char* GetName() { return "CEntryStub"; } |
| 449 | }; |
| 450 | |
| 451 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 452 | class ApiGetterEntryStub : public CodeStub { |
| 453 | public: |
| 454 | ApiGetterEntryStub(Handle<AccessorInfo> info, |
| 455 | ApiFunction* fun) |
| 456 | : info_(info), |
| 457 | fun_(fun) { } |
| 458 | void Generate(MacroAssembler* masm); |
| 459 | virtual bool has_custom_cache() { return true; } |
| 460 | virtual bool GetCustomCache(Code** code_out); |
| 461 | virtual void SetCustomCache(Code* value); |
| 462 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 463 | static const int kStackSpace = 5; |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 464 | static const int kArgc = 4; |
| 465 | private: |
| 466 | Handle<AccessorInfo> info() { return info_; } |
| 467 | ApiFunction* fun() { return fun_; } |
| 468 | Major MajorKey() { return NoCache; } |
| 469 | int MinorKey() { return 0; } |
| 470 | const char* GetName() { return "ApiEntryStub"; } |
| 471 | // The accessor info associated with the function. |
| 472 | Handle<AccessorInfo> info_; |
| 473 | // The function to be called. |
| 474 | ApiFunction* fun_; |
| 475 | }; |
| 476 | |
| 477 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 478 | class JSEntryStub : public CodeStub { |
| 479 | public: |
| 480 | JSEntryStub() { } |
| 481 | |
| 482 | void Generate(MacroAssembler* masm) { GenerateBody(masm, false); } |
| 483 | |
| 484 | protected: |
| 485 | void GenerateBody(MacroAssembler* masm, bool is_construct); |
| 486 | |
| 487 | private: |
| 488 | Major MajorKey() { return JSEntry; } |
| 489 | int MinorKey() { return 0; } |
| 490 | |
| 491 | const char* GetName() { return "JSEntryStub"; } |
| 492 | }; |
| 493 | |
| 494 | |
| 495 | class JSConstructEntryStub : public JSEntryStub { |
| 496 | public: |
| 497 | JSConstructEntryStub() { } |
| 498 | |
| 499 | void Generate(MacroAssembler* masm) { GenerateBody(masm, true); } |
| 500 | |
| 501 | private: |
| 502 | int MinorKey() { return 1; } |
| 503 | |
| 504 | const char* GetName() { return "JSConstructEntryStub"; } |
| 505 | }; |
| 506 | |
| 507 | |
| 508 | class ArgumentsAccessStub: public CodeStub { |
| 509 | public: |
| 510 | enum Type { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 511 | READ_ELEMENT, |
| 512 | NEW_OBJECT |
| 513 | }; |
| 514 | |
| 515 | explicit ArgumentsAccessStub(Type type) : type_(type) { } |
| 516 | |
| 517 | private: |
| 518 | Type type_; |
| 519 | |
| 520 | Major MajorKey() { return ArgumentsAccess; } |
| 521 | int MinorKey() { return type_; } |
| 522 | |
| 523 | void Generate(MacroAssembler* masm); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 524 | void GenerateReadElement(MacroAssembler* masm); |
| 525 | void GenerateNewObject(MacroAssembler* masm); |
| 526 | |
| 527 | const char* GetName() { return "ArgumentsAccessStub"; } |
| 528 | |
| 529 | #ifdef DEBUG |
| 530 | void Print() { |
| 531 | PrintF("ArgumentsAccessStub (type %d)\n", type_); |
| 532 | } |
| 533 | #endif |
| 534 | }; |
| 535 | |
| 536 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 537 | class RegExpExecStub: public CodeStub { |
| 538 | public: |
| 539 | RegExpExecStub() { } |
| 540 | |
| 541 | private: |
| 542 | Major MajorKey() { return RegExpExec; } |
| 543 | int MinorKey() { return 0; } |
| 544 | |
| 545 | void Generate(MacroAssembler* masm); |
| 546 | |
| 547 | const char* GetName() { return "RegExpExecStub"; } |
| 548 | |
| 549 | #ifdef DEBUG |
| 550 | void Print() { |
| 551 | PrintF("RegExpExecStub\n"); |
| 552 | } |
| 553 | #endif |
| 554 | }; |
| 555 | |
| 556 | |
| 557 | class CallFunctionStub: public CodeStub { |
| 558 | public: |
| 559 | CallFunctionStub(int argc, InLoopFlag in_loop, CallFunctionFlags flags) |
| 560 | : argc_(argc), in_loop_(in_loop), flags_(flags) { } |
| 561 | |
| 562 | void Generate(MacroAssembler* masm); |
| 563 | |
| 564 | private: |
| 565 | int argc_; |
| 566 | InLoopFlag in_loop_; |
| 567 | CallFunctionFlags flags_; |
| 568 | |
| 569 | #ifdef DEBUG |
| 570 | void Print() { |
| 571 | PrintF("CallFunctionStub (args %d, in_loop %d, flags %d)\n", |
| 572 | argc_, |
| 573 | static_cast<int>(in_loop_), |
| 574 | static_cast<int>(flags_)); |
| 575 | } |
| 576 | #endif |
| 577 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 578 | // Minor key encoding in 32 bits with Bitfield <Type, shift, size>. |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 579 | class InLoopBits: public BitField<InLoopFlag, 0, 1> {}; |
| 580 | class FlagBits: public BitField<CallFunctionFlags, 1, 1> {}; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 581 | class ArgcBits: public BitField<int, 2, 32 - 2> {}; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 582 | |
| 583 | Major MajorKey() { return CallFunction; } |
| 584 | int MinorKey() { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 585 | // Encode the parameters in a unique 32 bit value. |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 586 | return InLoopBits::encode(in_loop_) |
| 587 | | FlagBits::encode(flags_) |
| 588 | | ArgcBits::encode(argc_); |
| 589 | } |
| 590 | |
| 591 | InLoopFlag InLoop() { return in_loop_; } |
| 592 | bool ReceiverMightBeValue() { |
| 593 | return (flags_ & RECEIVER_MIGHT_BE_VALUE) != 0; |
| 594 | } |
| 595 | |
| 596 | public: |
| 597 | static int ExtractArgcFromMinorKey(int minor_key) { |
| 598 | return ArgcBits::decode(minor_key); |
| 599 | } |
| 600 | }; |
| 601 | |
| 602 | |
| 603 | class ToBooleanStub: public CodeStub { |
| 604 | public: |
| 605 | ToBooleanStub() { } |
| 606 | |
| 607 | void Generate(MacroAssembler* masm); |
| 608 | |
| 609 | private: |
| 610 | Major MajorKey() { return ToBoolean; } |
| 611 | int MinorKey() { return 0; } |
| 612 | }; |
| 613 | |
| 614 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 615 | } // namespace internal |
| 616 | } // namespace v8 |
| 617 | |
| 618 | #endif // V8_CODEGEN_H_ |