interpreter/ProtoCallFrame.cpp

   1 /*
   2  * Copyright (C) 2013 Apple Inc. All Rights Reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "ProtoCallFrame.h"
  28
  29 #include "CodeBlock.h"
  30 #include "JSCInlines.h"
  31 #include "StackAlignment.h"
  32
  33 namespace JSC {
  34
  35 void ProtoCallFrame::init(CodeBlock* codeBlock, JSObject* callee, JSValue thisValue, int argCountIncludingThis, JSValue* otherArgs)
  36 {
  37     this->args = otherArgs;
  38     this->setCodeBlock(codeBlock);
  39     this->setCallee(callee);
  40     this->setArgumentCountIncludingThis(argCountIncludingThis);
  41     if (codeBlock && argCountIncludingThis < codeBlock->numParameters())
  42         this->arityMissMatch = true;
  43     else
  44         this->arityMissMatch = false;
  45
  46     // Round up argCountIncludingThis to keep the stack frame size aligned.
  47     size_t paddedArgsCount = roundArgumentCountToAlignFrame(argCountIncludingThis);
  48     this->setPaddedArgCount(paddedArgsCount);
  49     this->clearCurrentVPC();
  50     this->setThisValue(thisValue);
  51 }
  52
  53 } // namespace JSC