Direct call api functions (arm implementation)

src/arm/frames-arm.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
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@@ skipping 95 matching lines @@
 };
 
 
 class ExitFrameConstants : public AllStatic {
  public:
   static const int kCodeOffset = -1 * kPointerSize;
   static const int kSPOffset = -1 * kPointerSize;
 
   // TODO(regis): Use a patched sp value on the stack instead.
   // A marker of 0 indicates that double registers are saved.
   static const int kMarkerOffset = -2 * kPointerSize;

[SeRya, 2011/01/21 09:52:36]

Actually the same technique (used fixed place in the stack frame for the return
address) could be used to avoid this marker (and simplify exit frame layout). I
don't think it worth to do it in this CL but you can update this TODO.

[Zaheer, 2011/01/21 11:51:50]

Done.

+  static const int kPCOffset = -2 * kPointerSize;
 
   // The caller fields are below the frame pointer on the stack.
   static const int kCallerFPOffset = +0 * kPointerSize;
   // The calling JS function is between FP and PC.
   static const int kCallerPCOffset = +2 * kPointerSize;
 
   // FP-relative displacement of the caller's SP.  It points just
   // below the saved PC.
   static const int kCallerSPDisplacement = +3 * kPointerSize;
 };
@@ skipping 37 matching lines @@
 
 inline Object* JavaScriptFrame::function_slot_object() const {
   const int offset = JavaScriptFrameConstants::kFunctionOffset;
   return Memory::Object_at(fp() + offset);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_FRAMES_ARM_H_