ftl/FTLAbstractHeapRepository.cpp

   1 /*
   2  * Copyright (C) 2013-2015 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 "FTLAbstractHeapRepository.h"
  28
  29 #if ENABLE(FTL_JIT)
  30
  31 #include "DirectArguments.h"
  32 #include "GetterSetter.h"
  33 #include "JSEnvironmentRecord.h"
  34 #include "JSPropertyNameEnumerator.h"
  35 #include "JSScope.h"
  36 #include "JSCInlines.h"
  37 #include "ScopedArguments.h"
  38 #include "ScopedArgumentsTable.h"
  39
  40 namespace JSC { namespace FTL {
  41
  42 AbstractHeapRepository::AbstractHeapRepository(LContext context)
  43     : root(0, "jscRoot")
  44
  45 #define ABSTRACT_HEAP_INITIALIZATION(name) , name(&root, #name)
  46     FOR_EACH_ABSTRACT_HEAP(ABSTRACT_HEAP_INITIALIZATION)
  47 #undef ABSTRACT_HEAP_INITIALIZATION
  48
  49 #define ABSTRACT_FIELD_INITIALIZATION(name, offset) , name(&root, #name, offset)
  50     FOR_EACH_ABSTRACT_FIELD(ABSTRACT_FIELD_INITIALIZATION)
  51 #undef ABSTRACT_FIELD_INITIALIZATION
  52
  53     , JSCell_freeListNext(JSCell_structureID)
  54
  55 #define INDEXED_ABSTRACT_HEAP_INITIALIZATION(name, offset, size) , name(context, &root, #name, offset, size)
  56     FOR_EACH_INDEXED_ABSTRACT_HEAP(INDEXED_ABSTRACT_HEAP_INITIALIZATION)
  57 #undef INDEXED_ABSTRACT_HEAP_INITIALIZATION
  58
  59 #define NUMBERED_ABSTRACT_HEAP_INITIALIZATION(name) , name(context, &root, #name)
  60     FOR_EACH_NUMBERED_ABSTRACT_HEAP(NUMBERED_ABSTRACT_HEAP_INITIALIZATION)
  61 #undef NUMBERED_ABSTRACT_HEAP_INITIALIZATION
  62
  63     , absolute(context, &root, "absolute")
  64     , m_context(context)
  65     , m_tbaaKind(mdKindID(m_context, "tbaa"))
  66 {
  67     // Make sure that our explicit assumptions about the StructureIDBlob match reality.
  68     RELEASE_ASSERT(!(JSCell_indexingType.offset() & (sizeof(int32_t) - 1)));
  69     RELEASE_ASSERT(JSCell_indexingType.offset() + 1 == JSCell_typeInfoType.offset());
  70     RELEASE_ASSERT(JSCell_indexingType.offset() + 2 == JSCell_typeInfoFlags.offset());
  71     RELEASE_ASSERT(JSCell_indexingType.offset() + 3 == JSCell_gcData.offset());
  72
  73     JSCell_indexingType.changeParent(&JSCell_usefulBytes);
  74     JSCell_typeInfoType.changeParent(&JSCell_usefulBytes);
  75     JSCell_typeInfoFlags.changeParent(&JSCell_usefulBytes);
  76     JSCell_gcData.changeParent(&JSCell_usefulBytes);
  77
  78     root.m_tbaaMetadata = mdNode(m_context, mdString(m_context, root.m_heapName));
  79
  80     RELEASE_ASSERT(m_tbaaKind);
  81     RELEASE_ASSERT(root.m_tbaaMetadata);
  82
  83     RELEASE_ASSERT(!JSCell_freeListNext.offset());
  84 }
  85
  86 AbstractHeapRepository::~AbstractHeapRepository()
  87 {
  88 }
  89
  90 } } // namespace JSC::FTL
  91
  92 #endif // ENABLE(FTL_JIT)
  93