llint/LLIntOffsetsExtractor.cpp

   1 /*
   2  * Copyright (C) 2012 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
  28 #include "CodeBlock.h"
  29 #include "Executable.h"
  30 #include "Heap.h"
  31 #include "Interpreter.h"
  32 #include "JITStubs.h"
  33 #include "JSArray.h"
  34 #include "JSCell.h"
  35 #include "JSFunction.h"
  36 #include "JSGlobalData.h"
  37 #include "JSGlobalObject.h"
  38 #include "JSObject.h"
  39 #include "JSPropertyNameIterator.h"
  40 #include "JSString.h"
  41 #include "JSTypeInfo.h"
  42 #include "JSVariableObject.h"
  43 #include "JumpTable.h"
  44 #include "LLIntOfflineAsmConfig.h"
  45 #include "MarkedSpace.h"
  46 #include "RegisterFile.h"
  47 #include "ScopeChain.h"
  48 #include "Structure.h"
  49 #include "StructureChain.h"
  50 #include "ValueProfile.h"
  51 #include <wtf/text/StringImpl.h>
  52
  53 namespace JSC {
  54
  55 #define OFFLINE_ASM_OFFSETOF(clazz, field) OBJECT_OFFSETOF(clazz, field)
  56
  57 class LLIntOffsetsExtractor {
  58 public:
  59     static const unsigned* dummy();
  60 };
  61
  62 const unsigned* LLIntOffsetsExtractor::dummy()
  63 {
  64 #if ENABLE(JIT)
  65 // This is a file generated by offlineasm/generate_offsets_extractor.rb, and contains code
  66 // to create a table of offsets, sizes, and a header identifying what combination of
  67 // Platform.h macros we have set. We include it inside of a method on LLIntOffsetsExtractor
  68 // because the fields whose offsets we're extracting are mostly private. So we make their
  69 // classes friends with LLIntOffsetsExtractor, and include the header here, to get the C++
  70 // compiler to kindly step aside and yield to our best intentions.
  71 #include "LLIntDesiredOffsets.h"
  72     return extractorTable;
  73 #else
  74     return 0;
  75 #endif
  76 }
  77
  78 } // namespace JSC
  79
  80 int main(int, char**)
  81 {
  82     // Out of an abundance of caution, make sure that LLIntOffsetsExtractor::dummy() is live,
  83     // and the extractorTable is live, too.
  84     printf("%p\n", JSC::LLIntOffsetsExtractor::dummy());
  85     return 0;
  86 }
  87
  88