/*
* File:        DataTarget.cpp
*
* Copyright (c) Freescale Semiconductor, Inc. All rights reserved.
* See included license file for license details.
*/

#include "DataTarget.h"
#include "DataSource.h"
#include "ElftosbErrors.h"

using namespace elftosb;

//! \exception elftosb::semantic_error Thrown if the source has multiple segments.
DataTarget::AddressRange ConstantDataTarget::getRangeForSegment(DataSource & source, DataSource::Segment & segment)
{
       // can't handle multi-segment data sources
       if (source.getSegmentCount() > 1)
       {
               throw semantic_error("constant targets only support single-segment sources");
       }

       // always relocate the segment to our begin address
       AddressRange range;
       range.m_begin = m_begin;

       if (isBounded())
       {
               // we have an end address. trim the result range to the segment size
               // or let the end address crop the segment.
               range.m_end = std::min<uint32_t>(m_end, m_begin + segment.getLength());
       }
       else
       {
               // we have no end address, so the segment size determines it.
               range.m_end = m_begin + segment.getLength();
       }

       return range;
}

//! If the \a segment has a natural location, the returned address range extends
//! from the segment's base address to its base address plus its length.
//!
//! \exception elftosb::semantic_error This exception is thrown if the \a segment
//!             does not have a natural location associated with it.
DataTarget::AddressRange NaturalDataTarget::getRangeForSegment(DataSource & source, DataSource::Segment & segment)
{
       if (!segment.hasNaturalLocation())
       {
               throw semantic_error("source has no natural location");
       }

       AddressRange range;
       range.m_begin = segment.getBaseAddress();
       range.m_end = segment.getBaseAddress() + segment.getLength();
       return range;
}