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https://github.com/corda/corda.git
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109 lines
2.1 KiB
C++
109 lines
2.1 KiB
C++
/* Copyright (c) 2008-2010, Avian Contributors
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Permission to use, copy, modify, and/or distribute this software
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for any purpose with or without fee is hereby granted, provided
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that the above copyright notice and this permission notice appear
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in all copies.
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There is NO WARRANTY for this software. See license.txt for
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details. */
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#ifndef BOOTIMAGE_H
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#define BOOTIMAGE_H
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#include "common.h"
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namespace vm {
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const unsigned BootMask = (~static_cast<unsigned>(0)) / BytesPerWord;
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const unsigned BootShift = 32 - log(BytesPerWord);
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const unsigned BootFlatConstant = 1 << BootShift;
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const unsigned BootHeapOffset = 1 << (BootShift + 1);
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class BootImage {
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public:
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class Thunk {
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public:
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Thunk():
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start(0), frameSavedOffset(0), length(0)
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{ }
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Thunk(unsigned start, unsigned frameSavedOffset, unsigned length):
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start(start), frameSavedOffset(frameSavedOffset), length(length)
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{ }
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unsigned start;
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unsigned frameSavedOffset;
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unsigned length;
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};
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class ThunkCollection {
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public:
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Thunk default_;
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Thunk defaultVirtual;
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Thunk native;
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Thunk aioob;
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Thunk table;
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};
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static const unsigned Magic = 0x22377322;
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unsigned magic;
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unsigned heapSize;
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unsigned codeSize;
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unsigned bootClassCount;
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unsigned appClassCount;
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unsigned stringCount;
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unsigned callCount;
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unsigned bootLoader;
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unsigned appLoader;
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unsigned types;
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unsigned methodTree;
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unsigned methodTreeSentinal;
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unsigned virtualThunks;
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uintptr_t codeBase;
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ThunkCollection thunks;
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unsigned compileMethodCall;
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unsigned compileVirtualMethodCall;
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unsigned invokeNativeCall;
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unsigned throwArrayIndexOutOfBoundsCall;
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#define THUNK(s) unsigned s##Call;
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#include "thunks.cpp"
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#undef THUNK
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};
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inline unsigned
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codeMapSize(unsigned codeSize)
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{
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return ceiling(codeSize, BitsPerWord) * BytesPerWord;
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}
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inline unsigned
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heapMapSize(unsigned heapSize)
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{
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return ceiling(heapSize, BitsPerWord * BytesPerWord) * BytesPerWord;
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}
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inline object
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bootObject(uintptr_t* heap, unsigned offset)
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{
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if (offset) {
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return reinterpret_cast<object>(heap + offset - 1);
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} else {
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return 0;
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}
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}
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} // namespace vm
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#endif//BOOTIMAGE_H
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