v8/src/x64/frames-x64.h

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#ifndef V8_X64_FRAMES_X64_H_
#define V8_X64_FRAMES_X64_H_

namespace v8 {
namespace internal {

// TODO(x64): This is a stub, mostly just a copy of the ia32 bit version.
// This will all need to change to be correct for x64.

static const int kNumRegs = 8;
static const RegList kJSCallerSaved = 0;
static const int kNumJSCallerSaved = 5;
typedef Object* JSCallerSavedBuffer[kNumJSCallerSaved];

class StackHandlerConstants : public AllStatic {
 public:
  static const int kNextOffset  = 0 * kPointerSize;
  static const int kPPOffset    = 1 * kPointerSize;
  static const int kFPOffset    = 2 * kPointerSize;

  static const int kCodeOffset  = 3 * kPointerSize;

  static const int kStateOffset = 4 * kPointerSize;
  static const int kPCOffset    = 5 * kPointerSize;

  static const int kAddressDisplacement = -1 * kPointerSize;
  static const int kSize = 6 * kPointerSize;
};


class EntryFrameConstants : public AllStatic {
 public:
  static const int kCallerFPOffset      = -1 * kPointerSize;

  static const int kFunctionArgOffset   = -1 * kPointerSize;
  static const int kReceiverArgOffset   = -1 * kPointerSize;
  static const int kArgcOffset          = -1 * kPointerSize;
  static const int kArgvOffset          = -1 * kPointerSize;
};


class ExitFrameConstants : public AllStatic {
 public:
  static const int kDebugMarkOffset = -1 * kPointerSize;
  static const int kSPOffset        = -1 * kPointerSize;

  static const int kPPDisplacement = -1 * kPointerSize;

  static const int kCallerFPOffset = -1 * kPointerSize;
  static const int kCallerPCOffset = -1 * kPointerSize;
};


class StandardFrameConstants : public AllStatic {
 public:
  static const int kExpressionsOffset = -1 * kPointerSize;
  static const int kMarkerOffset      = -1 * kPointerSize;
  static const int kContextOffset     = -1 * kPointerSize;
  static const int kCallerFPOffset    = -1 * kPointerSize;
  static const int kCallerPCOffset    = -1 * kPointerSize;
  static const int kCallerSPOffset    = -1 * kPointerSize;
};


class JavaScriptFrameConstants : public AllStatic {
 public:
  static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset;
  static const int kSavedRegistersOffset = -1 * kPointerSize;
  static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset;

  static const int kParam0Offset   = -1 * kPointerSize;
  static const int kReceiverOffset = -1 * kPointerSize;
};


class ArgumentsAdaptorFrameConstants : public AllStatic {
 public:
  static const int kLengthOffset = StandardFrameConstants::kExpressionsOffset;
};


class InternalFrameConstants : public AllStatic {
 public:
  static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset;
};


inline Object* JavaScriptFrame::function_slot_object() const {
  const int offset = JavaScriptFrameConstants::kFunctionOffset;
  return Memory::Object_at(fp() + offset);
}

} }  // namespace v8::internal

#endif  // V8_X64_FRAMES_X64_H_