v8::internal::ExitFrame Class Reference

#include <frames.h>

Inheritance diagram for v8::internal::ExitFrame:

Collaboration diagram for v8::internal::ExitFrame:

Public Member Functions
virtual Type	type () const
virtual Code *	unchecked_code () const
Object *&	code_slot () const
Object *&	constant_pool_slot () const
virtual void	Iterate (ObjectVisitor *v) const
virtual void	SetCallerFp (Address caller_fp)
Public Member Functions inherited from v8::StackFrame
int	GetLineNumber () const
	Returns the number, 1-based, of the line for the associate function call. More...
int	GetColumn () const
	Returns the 1-based column offset on the line for the associated function call. More...
int	GetScriptId () const
	Returns the id of the script for the function for this StackFrame. More...
Local< String >	GetScriptName () const
	Returns the name of the resource that contains the script for the function for this StackFrame. More...
Local< String >	GetScriptNameOrSourceURL () const
	Returns the name of the resource that contains the script for the function for this StackFrame or sourceURL value if the script name is undefined and its source ends with //# sourceURL=... More...
Local< String >	GetFunctionName () const
	Returns the name of the function associated with this stack frame. More...
bool	IsEval () const
	Returns whether or not the associated function is compiled via a call to eval(). More...
bool	IsConstructor () const
	Returns whether or not the associated function is called as a constructor via "new". More...

Static Public Member Functions
static ExitFrame *	cast (StackFrame *frame)
static Type	GetStateForFramePointer (Address fp, State *state)
static Address	ComputeStackPointer (Address fp)
static void	FillState (Address fp, Address sp, State *state)

Protected Member Functions
	ExitFrame (StackFrameIteratorBase *iterator)
virtual Address	GetCallerStackPointer () const

Private Member Functions
virtual void	ComputeCallerState (State *state) const

Friends
class	StackFrameIteratorBase

Detailed Description

Definition at line 415 of file frames.h.

Constructor & Destructor Documentation

ExitFrame()

v8::internal::ExitFrame::ExitFrame ( StackFrameIteratorBase *  iterator )

inlineexplicitprotected

Definition at line 144 of file frames-inl.h.

    : StackFrame(iterator) {
}

Member Function Documentation

cast()

static ExitFrame* v8::internal::ExitFrame::cast ( StackFrame *  frame )

inlinestatic

Definition at line 429 of file frames.h.

                                            {
    DCHECK(frame->is_exit());
    return static_cast<ExitFrame*>(frame);
  }

References DCHECK.

code_slot()

Object *& v8::internal::ExitFrame::code_slot

(

)

const

Definition at line 494 of file frames.cc.

                                    {
  const int offset = ExitFrameConstants::kCodeOffset;
  return Memory::Object_at(fp() + offset);
}

References v8::internal::fp, v8::internal::ExitFrameConstants::kCodeOffset, and v8::internal::Memory::Object_at().

Referenced by Iterate(), and unchecked_code().

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ComputeCallerState()

void v8::internal::ExitFrame::ComputeCallerState ( State *  state ) const

privatevirtual

Definition at line 505 of file frames.cc.

                                                     {
  // Set up the caller state.
  state->sp = caller_sp();
  state->fp = Memory::Address_at(fp() + ExitFrameConstants::kCallerFPOffset);
  state->pc_address = ResolveReturnAddressLocation(
      reinterpret_cast<Address*>(fp() + ExitFrameConstants::kCallerPCOffset));
  if (FLAG_enable_ool_constant_pool) {
    state->constant_pool_address = reinterpret_cast<Address*>(
        fp() + ExitFrameConstants::kConstantPoolOffset);
  }
}

References v8::internal::Memory::Address_at(), v8::internal::fp, v8::internal::ExitFrameConstants::kCallerFPOffset, v8::internal::ExitFrameConstants::kCallerPCOffset, and v8::internal::ExitFrameConstants::kConstantPoolOffset.

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ComputeStackPointer()

Address v8::internal::ExitFrame::ComputeStackPointer ( Address  fp )

static

Definition at line 548 of file frames.cc.

                                                 {
  return Memory::Address_at(fp + ExitFrameConstants::kSPOffset);
}

References v8::internal::Memory::Address_at(), v8::internal::fp, and v8::internal::ExitFrameConstants::kSPOffset.

Referenced by GetStateForFramePointer(), and v8::internal::SafeStackFrameIterator::IsValidExitFrame().

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constant_pool_slot()

Object*& v8::internal::ExitFrame::constant_pool_slot

(

)

const

Referenced by Iterate().

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FillState()

void v8::internal::ExitFrame::FillState ( Address  fp, Address  sp, State *  state  )

static

Definition at line 553 of file frames.cc.

                                                              {
  state->sp = sp;
  state->fp = fp;
  state->pc_address = ResolveReturnAddressLocation(
      reinterpret_cast<Address*>(sp - 1 * kPCOnStackSize));
  state->constant_pool_address =
      reinterpret_cast<Address*>(fp + ExitFrameConstants::kConstantPoolOffset);
}

References v8::internal::fp, v8::internal::ExitFrameConstants::kConstantPoolOffset, v8::internal::kPCOnStackSize, and v8::internal::sp.

Referenced by GetStateForFramePointer(), and v8::internal::SafeStackFrameIterator::IsValidExitFrame().

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GetCallerStackPointer()

Address v8::internal::ExitFrame::GetCallerStackPointer ( ) const

protectedvirtual

Definition at line 534 of file frames.cc.

                                               {
  return fp() + ExitFrameConstants::kCallerSPDisplacement;
}

References v8::internal::fp, and v8::internal::ExitFrameConstants::kCallerSPDisplacement.

GetStateForFramePointer()

StackFrame::Type v8::internal::ExitFrame::GetStateForFramePointer ( Address  fp, State *  state  )

static

Definition at line 539 of file frames.cc.

                                                                          {
  if (fp == 0) return NONE;
  Address sp = ComputeStackPointer(fp);
  FillState(fp, sp, state);
  DCHECK(*state->pc_address != NULL);
  return EXIT;
}

References ComputeStackPointer(), DCHECK, FillState(), v8::internal::fp, NONE, NULL, and v8::internal::sp.

Referenced by v8::internal::EntryFrame::GetCallerState(), v8::internal::StackFrameIterator::Reset(), and v8::internal::SafeStackFrameIterator::SafeStackFrameIterator().

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Iterate()

void v8::internal::ExitFrame::Iterate ( ObjectVisitor *  v ) const

virtual

Definition at line 523 of file frames.cc.

                                              {
  // The arguments are traversed as part of the expression stack of
  // the calling frame.
  IteratePc(v, pc_address(), LookupCode());
  v->VisitPointer(&code_slot());
  if (FLAG_enable_ool_constant_pool) {
    v->VisitPointer(&constant_pool_slot());
  }
}

References code_slot(), and constant_pool_slot().

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SetCallerFp()

void v8::internal::ExitFrame::SetCallerFp ( Address  caller_fp )

virtual

Definition at line 518 of file frames.cc.

                                             {
  Memory::Address_at(fp() + ExitFrameConstants::kCallerFPOffset) = caller_fp;
}

References v8::internal::Memory::Address_at(), v8::internal::fp, and v8::internal::ExitFrameConstants::kCallerFPOffset.

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type()

virtual Type v8::internal::ExitFrame::type ( ) const

inlinevirtual

Definition at line 417 of file frames.h.

{ return EXIT; }

unchecked_code()

Code * v8::internal::ExitFrame::unchecked_code ( ) const

virtual

Definition at line 500 of file frames.cc.

                                      {
  return reinterpret_cast<Code*>(code_slot());
}

References code_slot().

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Friends And Related Function Documentation

StackFrameIteratorBase

friend class StackFrameIteratorBase

friend

Definition at line 449 of file frames.h.

---

The documentation for this class was generated from the following files:

• /mnt/V8SourceCode/src/frames.h
• /mnt/V8SourceCode/src/frames-inl.h
• /mnt/V8SourceCode/src/frames.cc