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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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386 Address fp = Memory::Address_at(this->fp() + offset); | 386 Address fp = Memory::Address_at(this->fp() + offset); |
387 return ExitFrame::GetStateForFramePointer(fp, state); | 387 return ExitFrame::GetStateForFramePointer(fp, state); |
388 } | 388 } |
389 | 389 |
390 | 390 |
391 Code* EntryConstructFrame::code() const { | 391 Code* EntryConstructFrame::code() const { |
392 return Heap::js_construct_entry_code(); | 392 return Heap::js_construct_entry_code(); |
393 } | 393 } |
394 | 394 |
395 | 395 |
| 396 Object*& ExitFrame::code_slot() const { |
| 397 const int offset = ExitFrameConstants::kCodeOffset; |
| 398 return Memory::Object_at(fp() + offset); |
| 399 } |
| 400 |
| 401 |
396 Code* ExitFrame::code() const { | 402 Code* ExitFrame::code() const { |
397 return Heap::c_entry_code(); | 403 Object* code = code_slot(); |
| 404 if (code->IsSmi()) { |
| 405 return Heap::c_entry_debug_break_code(); |
| 406 } else { |
| 407 return Code::cast(code); |
| 408 } |
398 } | 409 } |
399 | 410 |
400 | 411 |
401 void ExitFrame::ComputeCallerState(State* state) const { | 412 void ExitFrame::ComputeCallerState(State* state) const { |
402 // Setup the caller state. | 413 // Setup the caller state. |
403 state->sp = caller_sp(); | 414 state->sp = caller_sp(); |
404 state->fp = Memory::Address_at(fp() + ExitFrameConstants::kCallerFPOffset); | 415 state->fp = Memory::Address_at(fp() + ExitFrameConstants::kCallerFPOffset); |
405 state->pc_address | 416 state->pc_address |
406 = reinterpret_cast<Address*>(fp() + ExitFrameConstants::kCallerPCOffset); | 417 = reinterpret_cast<Address*>(fp() + ExitFrameConstants::kCallerPCOffset); |
407 } | 418 } |
408 | 419 |
409 | 420 |
410 Address ExitFrame::GetCallerStackPointer() const { | 421 Address ExitFrame::GetCallerStackPointer() const { |
411 return fp() + ExitFrameConstants::kCallerSPDisplacement; | 422 return fp() + ExitFrameConstants::kCallerSPDisplacement; |
412 } | 423 } |
413 | 424 |
414 | 425 |
415 Code* ExitDebugFrame::code() const { | |
416 return Heap::c_entry_debug_break_code(); | |
417 } | |
418 | |
419 | |
420 Address StandardFrame::GetExpressionAddress(int n) const { | 426 Address StandardFrame::GetExpressionAddress(int n) const { |
421 const int offset = StandardFrameConstants::kExpressionsOffset; | 427 const int offset = StandardFrameConstants::kExpressionsOffset; |
422 return fp() + offset - n * kPointerSize; | 428 return fp() + offset - n * kPointerSize; |
423 } | 429 } |
424 | 430 |
425 | 431 |
426 int StandardFrame::ComputeExpressionsCount() const { | 432 int StandardFrame::ComputeExpressionsCount() const { |
427 const int offset = | 433 const int offset = |
428 StandardFrameConstants::kExpressionsOffset + kPointerSize; | 434 StandardFrameConstants::kExpressionsOffset + kPointerSize; |
429 Address base = fp() + offset; | 435 Address base = fp() + offset; |
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734 reg_code[i++] = r; | 740 reg_code[i++] = r; |
735 | 741 |
736 ASSERT(i == kNumJSCallerSaved); | 742 ASSERT(i == kNumJSCallerSaved); |
737 } | 743 } |
738 ASSERT(0 <= n && n < kNumJSCallerSaved); | 744 ASSERT(0 <= n && n < kNumJSCallerSaved); |
739 return reg_code[n]; | 745 return reg_code[n]; |
740 } | 746 } |
741 | 747 |
742 | 748 |
743 } } // namespace v8::internal | 749 } } // namespace v8::internal |
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