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/*
* Copyright (c) 2002-2004 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Nathan Binkert
* Steve Reinhardt
*/
#ifndef __BASE_LOADER_MEMORY_IMAGE_HH__
#define __BASE_LOADER_MEMORY_IMAGE_HH__
#include <algorithm>
#include <functional>
#include <initializer_list>
#include <memory>
#include <string>
#include <vector>
#include "base/loader/image_file_data.hh"
#include "base/logging.hh"
#include "base/types.hh"
class PortProxy;
class MemoryImage
{
public:
struct Segment
{
Segment(const std::string &_name, Addr _base,
const uint8_t *_data, size_t _size) :
name(_name), base(_base), data(_data), size(_size)
{}
Segment(const std::string &_name, Addr _base, size_t _size) :
name(_name), base(_base), size(_size)
{}
Segment(const std::string &_name, Addr _base,
const ImageFileDataPtr &_ifd, Addr offset, size_t _size) :
ifd(_ifd), name(_name), base(_base), size(_size)
{
panic_if(offset + size > ifd->len(),
"Segment outside the bounds of the image data");
data = ifd->data() + offset;
}
Segment(const std::string &_name, const ImageFileDataPtr &_ifd) :
Segment(_name, 0, _ifd, 0, _ifd->len())
{}
ImageFileDataPtr ifd;
std::string name;
Addr base = 0;
const uint8_t *data = nullptr;
size_t size = 0;
};
MemoryImage() {}
MemoryImage(const Segment &seg)
{
addSegment(seg);
}
MemoryImage(std::initializer_list<Segment> segs)
{
addSegments(segs);
}
private:
std::vector<Segment> _segments;
bool writeSegment(const Segment &seg, const PortProxy &proxy) const;
public:
const std::vector<Segment> &
segments() const
{
return _segments;
}
void
addSegment(const Segment &seg)
{
_segments.emplace_back(seg);
}
void
addSegments(std::initializer_list<Segment> segs)
{
for (auto &seg: segs)
addSegment(seg);
}
bool write(const PortProxy &proxy) const;
MemoryImage &move(std::function<Addr(Addr)> mapper);
MemoryImage &
offset(Addr by)
{
return move([by](Addr a){ return by + a; });
}
MemoryImage &
mask(Addr m) {
return move([m](Addr a) { return a & m; });
}
Addr
maxAddr() const
{
Addr max = 0;
for (auto &seg: _segments)
max = std::max(max, seg.base + seg.size);
return max;
}
Addr
minAddr() const
{
Addr min = MaxAddr;
for (auto &seg: _segments)
min = std::min(min, seg.base);
return min;
}
bool
contains(Addr addr) const
{
for (auto &seg: _segments) {
Addr start = seg.base;
Addr end = seg.base + seg.size;
if (addr >= start && addr < end)
return true;
}
return false;
}
};
static inline std::ostream &
operator << (std::ostream &os, const MemoryImage::Segment &seg)
{
ccprintf(os, "%s: %#x %d", seg.name, seg.base, seg.size);
return os;
}
#endif // __BASE_LOADER_MEMORY_IMAGE_HH__
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