65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
/*
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* File: DataTarget.cpp
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*
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* Copyright (c) Freescale Semiconductor, Inc. All rights reserved.
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* See included license file for license details.
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*/
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#include "DataTarget.h"
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#include "DataSource.h"
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#include "ElftosbErrors.h"
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#include <algorithm>
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using namespace elftosb;
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//! \exception elftosb::semantic_error Thrown if the source has multiple segments.
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DataTarget::AddressRange ConstantDataTarget::getRangeForSegment(DataSource &source, DataSource::Segment &segment)
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{
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// can't handle multi-segment data sources
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if (source.getSegmentCount() > 1)
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{
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throw semantic_error("constant targets only support single-segment sources");
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}
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// always relocate the segment to our begin address
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AddressRange range;
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range.m_begin = m_begin;
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if (isBounded())
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{
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// we have an end address. trim the result range to the segment size
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// or let the end address crop the segment.
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uint64_t sourceBasedEnd = static_cast<uint64_t>(m_begin) + static_cast<uint64_t>(segment.getLength());
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if (sourceBasedEnd > ULONG_MAX)
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{
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sourceBasedEnd = ULONG_MAX;
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}
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range.m_end = std::min<uint32_t>(m_end, static_cast<uint32_t>(sourceBasedEnd));
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}
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else
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{
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// we have no end address, so the segment size determines it.
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range.m_end = m_begin + segment.getLength();
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}
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return range;
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}
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//! If the \a segment has a natural location, the returned address range extends
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//! from the segment's base address to its base address plus its length.
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//!
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//! \exception elftosb::semantic_error This exception is thrown if the \a segment
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//! does not have a natural location associated with it.
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DataTarget::AddressRange NaturalDataTarget::getRangeForSegment(DataSource &source, DataSource::Segment &segment)
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{
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if (!segment.hasNaturalLocation())
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{
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throw semantic_error("source has no natural location");
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}
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AddressRange range;
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range.m_begin = segment.getBaseAddress();
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range.m_end = segment.getBaseAddress() + segment.getLength();
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return range;
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}
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