API call code refactoring (ia32).

src/ia32/macro-assembler-ia32.h

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 105 matching lines @@
 
   void EnterConstructFrame() { EnterFrame(StackFrame::CONSTRUCT); }
   void LeaveConstructFrame() { LeaveFrame(StackFrame::CONSTRUCT); }
 
   // Enter specific kind of exit frame; either in normal or debug mode.
   // Expects the number of arguments in register eax and
   // sets up the number of arguments in register edi and the pointer
   // to the first argument in register esi.
   void EnterExitFrame();
 
-  void EnterApiExitFrame(int stack_space, int argc);
+  void EnterApiExitFrame(int argc);
 
   // Leave the current exit frame. Expects the return value in
   // register eax:edx (untouched) and the pointer to the first
   // argument in register esi.
   void LeaveExitFrame();
 
+  // Leave the current exit frame. Expects the return value in
+  // register eax (untouched).
+  void LeaveApiExitFrame();
+
   // Find the function context up the context chain.
   void LoadContext(Register dst, int context_chain_length);
 
   // Load the global function with the given index.
   void LoadGlobalFunction(int index, Register function);
 
   // Load the initial map from the global function. The registers
   // function and map can be the same.
   void LoadGlobalFunctionInitialMap(Register function, Register map);
 
@@ skipping 349 matching lines @@
   // return address (unless this is somehow accounted for by the called
   // function).
   void CallCFunction(ExternalReference function, int num_arguments);
   void CallCFunction(Register function, int num_arguments);
 
   // Prepares stack to put arguments (aligns and so on). Reserves
   // space for return value if needed (assumes the return value is a handle).
   // Uses callee-saved esi to restore stack state after call. Arguments must be
   // stored in ApiParameterOperand(0), ApiParameterOperand(1) etc. Saves
   // context (esi).
-  void PrepareCallApiFunction(int stack_space, int argc);
+  void PrepareCallApiFunction(int argc, Register scratch);
 
   // Calls an API function. Allocates HandleScope, extracts
   // returned value from handle and propagates exceptions.
   // Clobbers ebx, edi and caller-save registers. Restores context.
-  MaybeObject* TryCallApiFunctionAndReturn(ApiFunction* function, int argc);
+  // On return removes stack_space * kPointerSize (GCed).
+  MaybeObject* TryCallApiFunctionAndReturn(ApiFunction* function,
+                                           int stack_space);
 
   // Jump to a runtime routine.
   void JumpToExternalReference(const ExternalReference& ext);
 
   MaybeObject* TryJumpToExternalReference(const ExternalReference& ext);
 
 
   // ---------------------------------------------------------------------------
   // Utilities
 
@@ skipping 78 matching lines @@
                       const Operand& code_operand,
                       Label* done,
                       InvokeFlag flag);
 
   // Activation support.
   void EnterFrame(StackFrame::Type type);
   void LeaveFrame(StackFrame::Type type);
 
   void EnterExitFramePrologue();
   void EnterExitFrameEpilogue(int argc);
+  
+  void LeaveExitFrameEpilogue();
 
   // Allocation support helpers.
   void LoadAllocationTopHelper(Register result,
                                Register result_end,
                                Register scratch,
                                AllocationFlags flags);
   void UpdateAllocationTopHelper(Register result_end, Register scratch);
 
   // Helper for PopHandleScope.  Allowed to perform a GC and returns
   // NULL if gc_allowed.  Does not perform a GC if !gc_allowed, and
@@ skipping 74 matching lines @@
   }                                                                       \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_MACRO_ASSEMBLER_IA32_H_