ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 1 | // Copyright 2006-2008 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #ifndef V8_FRAMES_H_ |
| 29 | #define V8_FRAMES_H_ |
| 30 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 31 | namespace v8 { |
| 32 | namespace internal { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 33 | |
| 34 | typedef uint32_t RegList; |
| 35 | |
| 36 | // Get the number of registers in a given register list. |
| 37 | int NumRegs(RegList list); |
| 38 | |
| 39 | // Return the code of the n-th saved register available to JavaScript. |
| 40 | int JSCallerSavedCode(int n); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 41 | |
| 42 | |
| 43 | // Forward declarations. |
| 44 | class StackFrameIterator; |
| 45 | class Top; |
| 46 | class ThreadLocalTop; |
| 47 | |
| 48 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 49 | class PcToCodeCache : AllStatic { |
| 50 | public: |
| 51 | struct PcToCodeCacheEntry { |
| 52 | Address pc; |
| 53 | Code* code; |
| 54 | }; |
| 55 | |
| 56 | static PcToCodeCacheEntry* cache(int index) { |
| 57 | return &cache_[index]; |
| 58 | } |
| 59 | |
| 60 | static Code* GcSafeFindCodeForPc(Address pc); |
| 61 | static Code* GcSafeCastToCode(HeapObject* object, Address pc); |
| 62 | |
| 63 | static void FlushPcToCodeCache() { |
| 64 | memset(&cache_[0], 0, sizeof(cache_)); |
| 65 | } |
| 66 | |
| 67 | static PcToCodeCacheEntry* GetCacheEntry(Address pc); |
| 68 | |
| 69 | private: |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 70 | static const int kPcToCodeCacheSize = 1024; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 71 | static PcToCodeCacheEntry cache_[kPcToCodeCacheSize]; |
| 72 | }; |
| 73 | |
| 74 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 75 | class StackHandler BASE_EMBEDDED { |
| 76 | public: |
| 77 | enum State { |
| 78 | ENTRY, |
| 79 | TRY_CATCH, |
| 80 | TRY_FINALLY |
| 81 | }; |
| 82 | |
| 83 | // Get the address of this stack handler. |
| 84 | inline Address address() const; |
| 85 | |
| 86 | // Get the next stack handler in the chain. |
| 87 | inline StackHandler* next() const; |
| 88 | |
| 89 | // Tells whether the given address is inside this handler. |
| 90 | inline bool includes(Address address) const; |
| 91 | |
| 92 | // Garbage collection support. |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 93 | inline void Iterate(ObjectVisitor* v, Code* holder) const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 94 | |
| 95 | // Conversion support. |
| 96 | static inline StackHandler* FromAddress(Address address); |
| 97 | |
| 98 | // Testers |
| 99 | bool is_entry() { return state() == ENTRY; } |
| 100 | bool is_try_catch() { return state() == TRY_CATCH; } |
| 101 | bool is_try_finally() { return state() == TRY_FINALLY; } |
| 102 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 103 | private: |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 104 | // Accessors. |
| 105 | inline State state() const; |
| 106 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 107 | inline Address* pc_address() const; |
mads.s.ager | 31e7138 | 2008-08-13 09:32:07 +0000 | [diff] [blame] | 108 | |
| 109 | DISALLOW_IMPLICIT_CONSTRUCTORS(StackHandler); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 110 | }; |
| 111 | |
| 112 | |
| 113 | #define STACK_FRAME_TYPE_LIST(V) \ |
| 114 | V(ENTRY, EntryFrame) \ |
| 115 | V(ENTRY_CONSTRUCT, EntryConstructFrame) \ |
| 116 | V(EXIT, ExitFrame) \ |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 117 | V(JAVA_SCRIPT, JavaScriptFrame) \ |
| 118 | V(INTERNAL, InternalFrame) \ |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 119 | V(CONSTRUCT, ConstructFrame) \ |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 120 | V(ARGUMENTS_ADAPTOR, ArgumentsAdaptorFrame) |
| 121 | |
| 122 | |
| 123 | // Abstract base class for all stack frames. |
| 124 | class StackFrame BASE_EMBEDDED { |
| 125 | public: |
| 126 | #define DECLARE_TYPE(type, ignore) type, |
| 127 | enum Type { |
| 128 | NONE = 0, |
| 129 | STACK_FRAME_TYPE_LIST(DECLARE_TYPE) |
| 130 | NUMBER_OF_TYPES |
| 131 | }; |
| 132 | #undef DECLARE_TYPE |
| 133 | |
| 134 | // Opaque data type for identifying stack frames. Used extensively |
| 135 | // by the debugger. |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 136 | // ID_MIN_VALUE and ID_MAX_VALUE are specified to ensure that enumeration type |
| 137 | // has correct value range (see Issue 830 for more details). |
| 138 | enum Id { |
| 139 | ID_MIN_VALUE = kMinInt, |
| 140 | ID_MAX_VALUE = kMaxInt, |
| 141 | NO_ID = 0 |
| 142 | }; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 143 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 144 | struct State { |
| 145 | State() : sp(NULL), fp(NULL), pc_address(NULL) { } |
| 146 | Address sp; |
| 147 | Address fp; |
| 148 | Address* pc_address; |
| 149 | }; |
| 150 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 151 | // Copy constructor; it breaks the connection to host iterator. |
| 152 | StackFrame(const StackFrame& original) { |
| 153 | this->state_ = original.state_; |
| 154 | this->iterator_ = NULL; |
| 155 | } |
| 156 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 157 | // Type testers. |
| 158 | bool is_entry() const { return type() == ENTRY; } |
| 159 | bool is_entry_construct() const { return type() == ENTRY_CONSTRUCT; } |
| 160 | bool is_exit() const { return type() == EXIT; } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 161 | bool is_java_script() const { return type() == JAVA_SCRIPT; } |
| 162 | bool is_arguments_adaptor() const { return type() == ARGUMENTS_ADAPTOR; } |
| 163 | bool is_internal() const { return type() == INTERNAL; } |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 164 | bool is_construct() const { return type() == CONSTRUCT; } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 165 | virtual bool is_standard() const { return false; } |
| 166 | |
| 167 | // Accessors. |
| 168 | Address sp() const { return state_.sp; } |
| 169 | Address fp() const { return state_.fp; } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 170 | Address caller_sp() const { return GetCallerStackPointer(); } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 171 | |
| 172 | Address pc() const { return *pc_address(); } |
| 173 | void set_pc(Address pc) { *pc_address() = pc; } |
| 174 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 175 | virtual void SetCallerFp(Address caller_fp) = 0; |
| 176 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 177 | Address* pc_address() const { return state_.pc_address; } |
| 178 | |
| 179 | // Get the id of this stack frame. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 180 | Id id() const { return static_cast<Id>(OffsetFrom(caller_sp())); } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 181 | |
| 182 | // Checks if this frame includes any stack handlers. |
| 183 | bool HasHandler() const; |
| 184 | |
| 185 | // Get the type of this frame. |
| 186 | virtual Type type() const = 0; |
| 187 | |
| 188 | // Get the code associated with this frame. |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 189 | // This method could be called during marking phase of GC. |
| 190 | virtual Code* unchecked_code() const = 0; |
| 191 | |
| 192 | // Get the code associated with this frame. |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 193 | Code* code() const { return GetContainingCode(pc()); } |
| 194 | |
| 195 | // Get the code object that contains the given pc. |
| 196 | Code* GetContainingCode(Address pc) const { |
| 197 | return PcToCodeCache::GetCacheEntry(pc)->code; |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 198 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 199 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 200 | virtual void Iterate(ObjectVisitor* v) const = 0; |
| 201 | static void IteratePc(ObjectVisitor* v, Address* pc_address, Code* holder); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 202 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 203 | |
| 204 | // Printing support. |
| 205 | enum PrintMode { OVERVIEW, DETAILS }; |
| 206 | virtual void Print(StringStream* accumulator, |
| 207 | PrintMode mode, |
| 208 | int index) const { } |
| 209 | |
| 210 | protected: |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 211 | explicit StackFrame(StackFrameIterator* iterator) : iterator_(iterator) { } |
| 212 | virtual ~StackFrame() { } |
| 213 | |
| 214 | // Compute the stack pointer for the calling frame. |
| 215 | virtual Address GetCallerStackPointer() const = 0; |
| 216 | |
| 217 | // Printing support. |
| 218 | static void PrintIndex(StringStream* accumulator, |
| 219 | PrintMode mode, |
| 220 | int index); |
| 221 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 222 | // Get the top handler from the current stack iterator. |
| 223 | inline StackHandler* top_handler() const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 224 | |
| 225 | // Compute the stack frame type for the given state. |
| 226 | static Type ComputeType(State* state); |
| 227 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 228 | private: |
| 229 | const StackFrameIterator* iterator_; |
kasperl@chromium.org | b912362 | 2008-09-17 14:05:56 +0000 | [diff] [blame] | 230 | State state_; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 231 | |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 232 | // Fill in the state of the calling frame. |
| 233 | virtual void ComputeCallerState(State* state) const = 0; |
| 234 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 235 | // Get the type and the state of the calling frame. |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 236 | virtual Type GetCallerState(State* state) const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 237 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 238 | friend class StackFrameIterator; |
| 239 | friend class StackHandlerIterator; |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 240 | friend class SafeStackFrameIterator; |
mads.s.ager | 31e7138 | 2008-08-13 09:32:07 +0000 | [diff] [blame] | 241 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 242 | private: |
| 243 | void operator=(const StackFrame& original); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 244 | }; |
| 245 | |
| 246 | |
| 247 | // Entry frames are used to enter JavaScript execution from C. |
| 248 | class EntryFrame: public StackFrame { |
| 249 | public: |
| 250 | virtual Type type() const { return ENTRY; } |
| 251 | |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 252 | virtual Code* unchecked_code() const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 253 | |
| 254 | // Garbage collection support. |
| 255 | virtual void Iterate(ObjectVisitor* v) const; |
| 256 | |
| 257 | static EntryFrame* cast(StackFrame* frame) { |
| 258 | ASSERT(frame->is_entry()); |
| 259 | return static_cast<EntryFrame*>(frame); |
| 260 | } |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 261 | virtual void SetCallerFp(Address caller_fp); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 262 | |
| 263 | protected: |
| 264 | explicit EntryFrame(StackFrameIterator* iterator) : StackFrame(iterator) { } |
| 265 | |
| 266 | // The caller stack pointer for entry frames is always zero. The |
| 267 | // real information about the caller frame is available through the |
| 268 | // link to the top exit frame. |
| 269 | virtual Address GetCallerStackPointer() const { return 0; } |
| 270 | |
| 271 | private: |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 272 | virtual void ComputeCallerState(State* state) const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 273 | virtual Type GetCallerState(State* state) const; |
| 274 | |
| 275 | friend class StackFrameIterator; |
| 276 | }; |
| 277 | |
| 278 | |
| 279 | class EntryConstructFrame: public EntryFrame { |
| 280 | public: |
| 281 | virtual Type type() const { return ENTRY_CONSTRUCT; } |
| 282 | |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 283 | virtual Code* unchecked_code() const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 284 | |
| 285 | static EntryConstructFrame* cast(StackFrame* frame) { |
| 286 | ASSERT(frame->is_entry_construct()); |
| 287 | return static_cast<EntryConstructFrame*>(frame); |
| 288 | } |
| 289 | |
| 290 | protected: |
| 291 | explicit EntryConstructFrame(StackFrameIterator* iterator) |
| 292 | : EntryFrame(iterator) { } |
| 293 | |
| 294 | private: |
| 295 | friend class StackFrameIterator; |
| 296 | }; |
| 297 | |
| 298 | |
| 299 | // Exit frames are used to exit JavaScript execution and go to C. |
| 300 | class ExitFrame: public StackFrame { |
| 301 | public: |
| 302 | virtual Type type() const { return EXIT; } |
| 303 | |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 304 | virtual Code* unchecked_code() const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 305 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 306 | Object*& code_slot() const; |
| 307 | |
ager@chromium.org | 3291210 | 2009-01-16 10:38:43 +0000 | [diff] [blame] | 308 | // Garbage collection support. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 309 | virtual void Iterate(ObjectVisitor* v) const; |
| 310 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 311 | virtual void SetCallerFp(Address caller_fp); |
| 312 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 313 | static ExitFrame* cast(StackFrame* frame) { |
| 314 | ASSERT(frame->is_exit()); |
| 315 | return static_cast<ExitFrame*>(frame); |
| 316 | } |
| 317 | |
| 318 | // Compute the state and type of an exit frame given a frame |
| 319 | // pointer. Used when constructing the first stack frame seen by an |
| 320 | // iterator and the frames following entry frames. |
| 321 | static Type GetStateForFramePointer(Address fp, State* state); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 322 | static Address ComputeStackPointer(Address fp); |
| 323 | static void FillState(Address fp, Address sp, State* state); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 324 | |
| 325 | protected: |
| 326 | explicit ExitFrame(StackFrameIterator* iterator) : StackFrame(iterator) { } |
| 327 | |
| 328 | virtual Address GetCallerStackPointer() const; |
| 329 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 330 | private: |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 331 | virtual void ComputeCallerState(State* state) const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 332 | |
| 333 | friend class StackFrameIterator; |
| 334 | }; |
| 335 | |
| 336 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 337 | class StandardFrame: public StackFrame { |
| 338 | public: |
| 339 | // Testers. |
| 340 | virtual bool is_standard() const { return true; } |
| 341 | |
| 342 | // Accessors. |
| 343 | inline Object* context() const; |
| 344 | |
| 345 | // Access the expressions in the stack frame including locals. |
| 346 | inline Object* GetExpression(int index) const; |
| 347 | inline void SetExpression(int index, Object* value); |
| 348 | int ComputeExpressionsCount() const; |
| 349 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 350 | virtual void SetCallerFp(Address caller_fp); |
| 351 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 352 | static StandardFrame* cast(StackFrame* frame) { |
| 353 | ASSERT(frame->is_standard()); |
| 354 | return static_cast<StandardFrame*>(frame); |
| 355 | } |
| 356 | |
| 357 | protected: |
| 358 | explicit StandardFrame(StackFrameIterator* iterator) |
| 359 | : StackFrame(iterator) { } |
| 360 | |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 361 | virtual void ComputeCallerState(State* state) const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 362 | |
| 363 | // Accessors. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 364 | inline Address caller_fp() const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 365 | inline Address caller_pc() const; |
| 366 | |
| 367 | // Computes the address of the PC field in the standard frame given |
| 368 | // by the provided frame pointer. |
| 369 | static inline Address ComputePCAddress(Address fp); |
| 370 | |
| 371 | // Iterate over expression stack including stack handlers, locals, |
| 372 | // and parts of the fixed part including context and code fields. |
| 373 | void IterateExpressions(ObjectVisitor* v) const; |
| 374 | |
| 375 | // Returns the address of the n'th expression stack element. |
| 376 | Address GetExpressionAddress(int n) const; |
| 377 | |
| 378 | // Determines if the n'th expression stack element is in a stack |
| 379 | // handler or not. Requires traversing all handlers in this frame. |
| 380 | bool IsExpressionInsideHandler(int n) const; |
| 381 | |
| 382 | // Determines if the standard frame for the given frame pointer is |
| 383 | // an arguments adaptor frame. |
| 384 | static inline bool IsArgumentsAdaptorFrame(Address fp); |
| 385 | |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 386 | // Determines if the standard frame for the given frame pointer is a |
| 387 | // construct frame. |
| 388 | static inline bool IsConstructFrame(Address fp); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 389 | |
| 390 | private: |
| 391 | friend class StackFrame; |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 392 | friend class StackFrameIterator; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 393 | }; |
| 394 | |
| 395 | |
| 396 | class JavaScriptFrame: public StandardFrame { |
| 397 | public: |
| 398 | virtual Type type() const { return JAVA_SCRIPT; } |
| 399 | |
| 400 | // Accessors. |
| 401 | inline Object* function() const; |
| 402 | inline Object* receiver() const; |
| 403 | inline void set_receiver(Object* value); |
| 404 | |
| 405 | // Access the parameters. |
| 406 | Object* GetParameter(int index) const; |
| 407 | int ComputeParametersCount() const; |
| 408 | |
| 409 | // Temporary way of getting access to the number of parameters |
| 410 | // passed on the stack by the caller. Once argument adaptor frames |
| 411 | // has been introduced on ARM, this number will always match the |
| 412 | // computed parameters count. |
| 413 | int GetProvidedParametersCount() const; |
| 414 | |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 415 | // Check if this frame is a constructor frame invoked through 'new'. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 416 | bool IsConstructor() const; |
| 417 | |
| 418 | // Check if this frame has "adapted" arguments in the sense that the |
| 419 | // actual passed arguments are available in an arguments adaptor |
| 420 | // frame below it on the stack. |
| 421 | inline bool has_adapted_arguments() const; |
| 422 | |
ager@chromium.org | 3291210 | 2009-01-16 10:38:43 +0000 | [diff] [blame] | 423 | // Garbage collection support. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 424 | virtual void Iterate(ObjectVisitor* v) const; |
| 425 | |
| 426 | // Printing support. |
| 427 | virtual void Print(StringStream* accumulator, |
| 428 | PrintMode mode, |
| 429 | int index) const; |
| 430 | |
| 431 | // Determine the code for the frame. |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 432 | virtual Code* unchecked_code() const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 433 | |
| 434 | static JavaScriptFrame* cast(StackFrame* frame) { |
| 435 | ASSERT(frame->is_java_script()); |
| 436 | return static_cast<JavaScriptFrame*>(frame); |
| 437 | } |
| 438 | |
| 439 | protected: |
| 440 | explicit JavaScriptFrame(StackFrameIterator* iterator) |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 441 | : StandardFrame(iterator) { } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 442 | |
| 443 | virtual Address GetCallerStackPointer() const; |
| 444 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 445 | private: |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 446 | inline Object* function_slot_object() const; |
| 447 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 448 | friend class StackFrameIterator; |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 449 | friend class StackTracer; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 450 | }; |
| 451 | |
| 452 | |
| 453 | // Arguments adaptor frames are automatically inserted below |
| 454 | // JavaScript frames when the actual number of parameters does not |
| 455 | // match the formal number of parameters. |
| 456 | class ArgumentsAdaptorFrame: public JavaScriptFrame { |
| 457 | public: |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 458 | virtual Type type() const { return ARGUMENTS_ADAPTOR; } |
| 459 | |
| 460 | // Determine the code for the frame. |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 461 | virtual Code* unchecked_code() const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 462 | |
| 463 | static ArgumentsAdaptorFrame* cast(StackFrame* frame) { |
| 464 | ASSERT(frame->is_arguments_adaptor()); |
| 465 | return static_cast<ArgumentsAdaptorFrame*>(frame); |
| 466 | } |
| 467 | |
| 468 | // Printing support. |
| 469 | virtual void Print(StringStream* accumulator, |
| 470 | PrintMode mode, |
| 471 | int index) const; |
| 472 | protected: |
| 473 | explicit ArgumentsAdaptorFrame(StackFrameIterator* iterator) |
| 474 | : JavaScriptFrame(iterator) { } |
| 475 | |
| 476 | virtual Address GetCallerStackPointer() const; |
| 477 | |
| 478 | private: |
| 479 | friend class StackFrameIterator; |
| 480 | }; |
| 481 | |
| 482 | |
| 483 | class InternalFrame: public StandardFrame { |
| 484 | public: |
| 485 | virtual Type type() const { return INTERNAL; } |
| 486 | |
ager@chromium.org | 3291210 | 2009-01-16 10:38:43 +0000 | [diff] [blame] | 487 | // Garbage collection support. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 488 | virtual void Iterate(ObjectVisitor* v) const; |
| 489 | |
| 490 | // Determine the code for the frame. |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 491 | virtual Code* unchecked_code() const; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 492 | |
| 493 | static InternalFrame* cast(StackFrame* frame) { |
| 494 | ASSERT(frame->is_internal()); |
| 495 | return static_cast<InternalFrame*>(frame); |
| 496 | } |
| 497 | |
| 498 | protected: |
| 499 | explicit InternalFrame(StackFrameIterator* iterator) |
| 500 | : StandardFrame(iterator) { } |
| 501 | |
| 502 | virtual Address GetCallerStackPointer() const; |
| 503 | |
| 504 | private: |
| 505 | friend class StackFrameIterator; |
| 506 | }; |
| 507 | |
| 508 | |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 509 | // Construct frames are special trampoline frames introduced to handle |
| 510 | // function invocations through 'new'. |
| 511 | class ConstructFrame: public InternalFrame { |
| 512 | public: |
| 513 | virtual Type type() const { return CONSTRUCT; } |
| 514 | |
| 515 | static ConstructFrame* cast(StackFrame* frame) { |
| 516 | ASSERT(frame->is_construct()); |
| 517 | return static_cast<ConstructFrame*>(frame); |
| 518 | } |
| 519 | |
| 520 | protected: |
| 521 | explicit ConstructFrame(StackFrameIterator* iterator) |
| 522 | : InternalFrame(iterator) { } |
| 523 | |
| 524 | private: |
| 525 | friend class StackFrameIterator; |
| 526 | }; |
| 527 | |
| 528 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 529 | class StackFrameIterator BASE_EMBEDDED { |
| 530 | public: |
| 531 | // An iterator that iterates over the current thread's stack. |
| 532 | StackFrameIterator(); |
| 533 | |
| 534 | // An iterator that iterates over a given thread's stack. |
| 535 | explicit StackFrameIterator(ThreadLocalTop* thread); |
| 536 | |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 537 | // An iterator that can start from a given FP address. |
| 538 | // If use_top, then work as usual, if fp isn't NULL, use it, |
| 539 | // otherwise, do nothing. |
| 540 | StackFrameIterator(bool use_top, Address fp, Address sp); |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 541 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 542 | StackFrame* frame() const { |
| 543 | ASSERT(!done()); |
| 544 | return frame_; |
| 545 | } |
| 546 | |
| 547 | bool done() const { return frame_ == NULL; } |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 548 | void Advance() { (this->*advance_)(); } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 549 | |
| 550 | // Go back to the first frame. |
| 551 | void Reset(); |
| 552 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 553 | private: |
| 554 | #define DECLARE_SINGLETON(ignore, type) type type##_; |
| 555 | STACK_FRAME_TYPE_LIST(DECLARE_SINGLETON) |
| 556 | #undef DECLARE_SINGLETON |
| 557 | StackFrame* frame_; |
| 558 | StackHandler* handler_; |
kasper.lund | 7276f14 | 2008-07-30 08:49:36 +0000 | [diff] [blame] | 559 | ThreadLocalTop* thread_; |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 560 | Address fp_; |
| 561 | Address sp_; |
| 562 | void (StackFrameIterator::*advance_)(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 563 | |
| 564 | StackHandler* handler() const { |
| 565 | ASSERT(!done()); |
| 566 | return handler_; |
| 567 | } |
| 568 | |
| 569 | // Get the type-specific frame singleton in a given state. |
| 570 | StackFrame* SingletonFor(StackFrame::Type type, StackFrame::State* state); |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 571 | // A helper function, can return a NULL pointer. |
| 572 | StackFrame* SingletonFor(StackFrame::Type type); |
| 573 | |
| 574 | void AdvanceWithHandler(); |
| 575 | void AdvanceWithoutHandler(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 576 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 577 | friend class StackFrame; |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 578 | friend class SafeStackFrameIterator; |
mads.s.ager@gmail.com | 9a4089a | 2008-09-01 08:55:01 +0000 | [diff] [blame] | 579 | DISALLOW_COPY_AND_ASSIGN(StackFrameIterator); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 580 | }; |
| 581 | |
| 582 | |
| 583 | // Iterator that supports iterating through all JavaScript frames. |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 584 | template<typename Iterator> |
| 585 | class JavaScriptFrameIteratorTemp BASE_EMBEDDED { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 586 | public: |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 587 | JavaScriptFrameIteratorTemp() { if (!done()) Advance(); } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 588 | |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 589 | explicit JavaScriptFrameIteratorTemp(ThreadLocalTop* thread) : |
| 590 | iterator_(thread) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 591 | if (!done()) Advance(); |
| 592 | } |
| 593 | |
| 594 | // Skip frames until the frame with the given id is reached. |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 595 | explicit JavaScriptFrameIteratorTemp(StackFrame::Id id); |
| 596 | |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 597 | JavaScriptFrameIteratorTemp(Address fp, Address sp, |
| 598 | Address low_bound, Address high_bound) : |
| 599 | iterator_(fp, sp, low_bound, high_bound) { |
| 600 | if (!done()) Advance(); |
| 601 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 602 | |
| 603 | inline JavaScriptFrame* frame() const; |
| 604 | |
| 605 | bool done() const { return iterator_.done(); } |
| 606 | void Advance(); |
| 607 | |
| 608 | // Advance to the frame holding the arguments for the current |
| 609 | // frame. This only affects the current frame if it has adapted |
| 610 | // arguments. |
| 611 | void AdvanceToArgumentsFrame(); |
| 612 | |
| 613 | // Go back to the first frame. |
| 614 | void Reset(); |
| 615 | |
| 616 | private: |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 617 | Iterator iterator_; |
| 618 | }; |
| 619 | |
| 620 | |
| 621 | typedef JavaScriptFrameIteratorTemp<StackFrameIterator> JavaScriptFrameIterator; |
| 622 | |
| 623 | |
| 624 | // NOTE: The stack trace frame iterator is an iterator that only |
| 625 | // traverse proper JavaScript frames; that is JavaScript frames that |
| 626 | // have proper JavaScript functions. This excludes the problematic |
| 627 | // functions in runtime.js. |
| 628 | class StackTraceFrameIterator: public JavaScriptFrameIterator { |
| 629 | public: |
| 630 | StackTraceFrameIterator(); |
| 631 | void Advance(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 632 | |
| 633 | private: |
| 634 | bool IsValidFrame(); |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 635 | }; |
| 636 | |
| 637 | |
| 638 | class SafeStackFrameIterator BASE_EMBEDDED { |
| 639 | public: |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 640 | SafeStackFrameIterator(Address fp, Address sp, |
| 641 | Address low_bound, Address high_bound); |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 642 | |
| 643 | StackFrame* frame() const { |
| 644 | ASSERT(is_working_iterator_); |
| 645 | return iterator_.frame(); |
| 646 | } |
| 647 | |
| 648 | bool done() const { return iteration_done_ ? true : iterator_.done(); } |
| 649 | |
| 650 | void Advance(); |
| 651 | void Reset(); |
| 652 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 653 | static bool is_active() { return active_count_ > 0; } |
| 654 | |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 655 | static bool IsWithinBounds( |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 656 | Address low_bound, Address high_bound, Address addr) { |
| 657 | return low_bound <= addr && addr <= high_bound; |
| 658 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 659 | |
| 660 | private: |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 661 | class StackAddressValidator { |
| 662 | public: |
| 663 | StackAddressValidator(Address low_bound, Address high_bound) |
| 664 | : low_bound_(low_bound), high_bound_(high_bound) { } |
| 665 | bool IsValid(Address addr) const { |
| 666 | return IsWithinBounds(low_bound_, high_bound_, addr); |
| 667 | } |
| 668 | private: |
| 669 | Address low_bound_; |
| 670 | Address high_bound_; |
| 671 | }; |
| 672 | |
| 673 | class ExitFrameValidator { |
| 674 | public: |
| 675 | explicit ExitFrameValidator(const StackAddressValidator& validator) |
| 676 | : validator_(validator) { } |
| 677 | ExitFrameValidator(Address low_bound, Address high_bound) |
| 678 | : validator_(low_bound, high_bound) { } |
| 679 | bool IsValidFP(Address fp); |
| 680 | private: |
| 681 | StackAddressValidator validator_; |
| 682 | }; |
| 683 | |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 684 | bool IsValidStackAddress(Address addr) const { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 685 | return stack_validator_.IsValid(addr); |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 686 | } |
kasperl@chromium.org | d1e3e72 | 2009-04-14 13:38:25 +0000 | [diff] [blame] | 687 | bool CanIterateHandles(StackFrame* frame, StackHandler* handler); |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 688 | bool IsValidFrame(StackFrame* frame) const; |
| 689 | bool IsValidCaller(StackFrame* frame); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 690 | static bool IsValidTop(Address low_bound, Address high_bound); |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 691 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 692 | // This is a nasty hack to make sure the active count is incremented |
| 693 | // before the constructor for the embedded iterator is invoked. This |
| 694 | // is needed because the constructor will start looking at frames |
| 695 | // right away and we need to make sure it doesn't start inspecting |
| 696 | // heap objects. |
| 697 | class ActiveCountMaintainer BASE_EMBEDDED { |
| 698 | public: |
| 699 | ActiveCountMaintainer() { active_count_++; } |
| 700 | ~ActiveCountMaintainer() { active_count_--; } |
| 701 | }; |
| 702 | |
| 703 | ActiveCountMaintainer maintainer_; |
| 704 | static int active_count_; |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 705 | StackAddressValidator stack_validator_; |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 706 | const bool is_valid_top_; |
| 707 | const bool is_valid_fp_; |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 708 | const bool is_working_iterator_; |
| 709 | bool iteration_done_; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 710 | StackFrameIterator iterator_; |
| 711 | }; |
| 712 | |
| 713 | |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 714 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 715 | typedef JavaScriptFrameIteratorTemp<SafeStackFrameIterator> |
| 716 | SafeJavaScriptFrameIterator; |
| 717 | |
| 718 | |
| 719 | class SafeStackTraceFrameIterator: public SafeJavaScriptFrameIterator { |
| 720 | public: |
ager@chromium.org | bb29dc9 | 2009-03-24 13:25:23 +0000 | [diff] [blame] | 721 | explicit SafeStackTraceFrameIterator(Address fp, Address sp, |
| 722 | Address low_bound, Address high_bound); |
kasperl@chromium.org | 7be3c99 | 2009-03-12 07:19:55 +0000 | [diff] [blame] | 723 | void Advance(); |
| 724 | }; |
| 725 | #endif |
| 726 | |
| 727 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 728 | class StackFrameLocator BASE_EMBEDDED { |
| 729 | public: |
| 730 | // Find the nth JavaScript frame on the stack. The caller must |
| 731 | // guarantee that such a frame exists. |
| 732 | JavaScriptFrame* FindJavaScriptFrame(int n); |
| 733 | |
| 734 | private: |
| 735 | StackFrameIterator iterator_; |
| 736 | }; |
| 737 | |
| 738 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 739 | // Reads all frames on the current stack and copies them into the current |
| 740 | // zone memory. |
| 741 | Vector<StackFrame*> CreateStackMap(); |
| 742 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 743 | } } // namespace v8::internal |
| 744 | |
| 745 | #endif // V8_FRAMES_H_ |