f85286b3de
Port proxies are used to replace non-structural ports, and thus enable all ports in the system to correspond to a structural entity. This has the advantage of accessing memory through the normal memory subsystem and thus allowing any constellation of distributed memories, address maps, etc. Most accesses are done through the "system port" that is used for loading binaries, debugging etc. For the entities that belong to the CPU, e.g. threads and thread contexts, they wrap the CPU data port in a port proxy. The following replacements are made: FunctionalPort > PortProxy TranslatingPort > SETranslatingPortProxy VirtualPort > FSTranslatingPortProxy --HG-- rename : src/mem/vport.cc => src/mem/fs_translating_port_proxy.cc rename : src/mem/vport.hh => src/mem/fs_translating_port_proxy.hh rename : src/mem/translating_port.cc => src/mem/se_translating_port_proxy.cc rename : src/mem/translating_port.hh => src/mem/se_translating_port_proxy.hh
86 lines
3.3 KiB
C++
86 lines
3.3 KiB
C++
/*
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* Copyright (c) 2003-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Steve Reinhardt
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*/
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#ifndef __ELF_OBJECT_HH__
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#define __ELF_OBJECT_HH__
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#include <set>
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#include <vector>
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#include "base/loader/object_file.hh"
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class ElfObject : public ObjectFile
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{
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protected:
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//The global definition of a "Section" is closest to elf's segments.
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typedef ObjectFile::Section Segment;
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//These values are provided to a linux process by the kernel, so we
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//need to keep them around.
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Addr _programHeaderTable;
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uint16_t _programHeaderSize;
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uint16_t _programHeaderCount;
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std::set<std::string> sectionNames;
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/// Helper functions for loadGlobalSymbols() and loadLocalSymbols().
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bool loadSomeSymbols(SymbolTable *symtab, int binding, Addr mask);
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ElfObject(const std::string &_filename, int _fd,
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size_t _len, uint8_t *_data,
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Arch _arch, OpSys _opSys);
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void getSections();
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bool sectionExists(std::string sec);
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std::vector<Segment> extraSegments;
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public:
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virtual ~ElfObject() {}
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bool loadSections(PortProxy *memProxy,
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Addr addrMask = std::numeric_limits<Addr>::max());
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virtual bool loadGlobalSymbols(SymbolTable *symtab, Addr addrMask =
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std::numeric_limits<Addr>::max());
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virtual bool loadLocalSymbols(SymbolTable *symtab, Addr addrMask =
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std::numeric_limits<Addr>::max());
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virtual bool isDynamic() { return sectionExists(".interp"); }
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virtual bool hasTLS() { return sectionExists(".tbss"); }
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static ObjectFile *tryFile(const std::string &fname, int fd,
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size_t len, uint8_t *data);
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Addr programHeaderTable() {return _programHeaderTable;}
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uint16_t programHeaderSize() {return _programHeaderSize;}
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uint16_t programHeaderCount() {return _programHeaderCount;}
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};
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#endif // __ELF_OBJECT_HH__
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