.o file reader source files
Warmist
parent
e66a03e654
commit
89c1dba637
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#ifndef OUTFILE_H
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#define OUTFILE_H
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#include <string>
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#include <fstream>
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#include <iostream>
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#include <map>
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#include <vector>
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namespace OutFile
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{
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struct Header
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{
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unsigned short machinetype;
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unsigned short sectioncount;
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unsigned long time;
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unsigned long symbolptr;
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unsigned long symbolcount;
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unsigned short opthead;
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unsigned short flags;
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void PrintData()
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{
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std::cout<<"Symbol start:"<<symbolptr<<"\n";
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}
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};
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struct Section
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{
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char name[8];
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unsigned long Vsize;
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unsigned long Vstart;
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unsigned long size;
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unsigned long start;
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unsigned long ptrRel;
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unsigned long ptrLine;
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unsigned short numRel;
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unsigned short numLine;
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unsigned long flags;
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void PrintData()
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{
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std::cout<<name<<" size:"<<size<<" start:"<<start<<"\n";
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}
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};
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struct Symbol
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{
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std::string name;
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unsigned long pos;
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unsigned short sectnumb;
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unsigned short type;
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unsigned char storageclass;
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unsigned char auxsymbs;
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//char unk2[6];
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void Read(std::iostream &s,unsigned long strptr)
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{
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union
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{
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char buf[8];
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struct
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{
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unsigned long zeros;
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unsigned long strptr;
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};
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}data;
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s.read((char*)&data,8);
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s.read((char*)&pos,4);
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s.read((char*)§numb,2);
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s.read((char*)&type,2);
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s.read((char*)&storageclass,1);
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s.read((char*)&auxsymbs,1);
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if(data.zeros!=0)
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{
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name=data.buf;
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name=name.substr(0,8);
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}
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else
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{
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//name="";
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//std::cout<<"Name in symbol table\n";
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char buf[256];
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s.seekg(strptr+data.strptr);
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s.get(buf,256,'\0');
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name=buf;
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}
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//s.seekp(6,std::ios::cur);
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}
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void PrintData()
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{
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std::cout<<name<<" section:"<<sectnumb<<" pos:"<<pos<<"\n";
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}
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};
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struct Relocation
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{
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unsigned long ptr;
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unsigned long tblIndex;
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unsigned short type;
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};
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typedef std::vector<Symbol> vSymbol;
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class File
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{
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public:
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File(std::string path);
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virtual ~File();
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void GetText(char *ptr);
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size_t GetTextSize();
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void LoadSymbols();
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vSymbol GetSymbols(){LoadSymbols();return symbols;};
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void PrintSymbols();
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void PrintRelocations();
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protected:
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private:
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typedef std::map<std::string,Section> secMap;
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secMap sections;
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vSymbol symbols;
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Section &GetSection(std::string name);
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std::fstream mystream;
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Header myhead;
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// Section Text;
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//Section Data;
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// Section Bss;
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};
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}
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#endif // OUTFILE_H
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@ -0,0 +1,13 @@
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#ifndef LUA_MISC_H
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#define LUA_MISC_H
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#include "luamain.h"
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namespace lua
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{
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void RegisterMisc(lua::state &st);
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}
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#endif
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@ -0,0 +1,100 @@
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#include "OutFile.h"
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using namespace OutFile;
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File::File(std::string path)
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{
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//mystream.exceptions ( std::fstream::eofbit | std::fstream::failbit | std::fstream::badbit );
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mystream.open(path.c_str(),std::fstream::binary|std::ios::in|std::ios::out);
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mystream.read((char*)&myhead,sizeof(myhead));
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for(unsigned i=0;i<myhead.sectioncount;i++)
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{
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Section x;
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mystream.read((char*)&x,sizeof(Section));
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sections[x.name]=x;
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}
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if(mystream)
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{
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//std::cout<<"Sizeof:"<<sizeof(Section)<<"\n";
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/*myhead.PrintData();
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for(auto it=sections.begin();it!=sections.end();it++)
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{
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it->second.PrintData();
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}*/
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}
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else
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{
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std::cout<<"Error opening file!"<<std::endl;
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}
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}
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Section &File::GetSection(std::string name)
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{
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return sections[name];
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}
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void File::GetText(char *ptr)
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{
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Section &s=GetSection(".text");
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mystream.seekg(s.start);
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mystream.read(ptr,s.size);
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}
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size_t File::GetTextSize()
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{
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Section &s=GetSection(".text");
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return s.size;
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}
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void File::PrintRelocations()
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{
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for(auto it=sections.begin();it!=sections.end();it++)
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{
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std::cout<<it->first<<":\n";
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for(unsigned i=0;i<it->second.numRel;i++)
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{
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Relocation r;
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mystream.seekg(it->second.ptrRel+10*i);
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mystream.read((char*)&r,10);
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std::cout<<r.ptr<<" -- "<<r.tblIndex<<":"<</*symbols[r.tblIndex].name<<*/" type:"<<r.type<<"\n";
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}
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}
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}
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void File::PrintSymbols()
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{
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std::cout<<"Sizeof symbol:"<<sizeof(Symbol)<<std::endl;
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std::cout<<"Symbol count:"<<myhead.symbolcount<<std::endl;
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for(unsigned i=0;i<myhead.symbolcount;i++)
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{
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mystream.seekg(myhead.symbolptr+i*18);
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Symbol s;
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std::cout<<i<<"\t";
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s.Read(mystream,myhead.symbolptr+18*myhead.symbolcount);
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//mystream.read((char*)&s,sizeof(Symbol));
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s.PrintData();
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symbols.push_back(s);
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if(s.auxsymbs>0)
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{
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i+=s.auxsymbs;
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}
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}
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}
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void File::LoadSymbols()
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{
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symbols.clear();
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for(unsigned i=0;i<myhead.symbolcount;i++)
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{
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mystream.seekg(myhead.symbolptr+i*18);
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Symbol s;
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s.Read(mystream,myhead.symbolptr+18*myhead.symbolcount);
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symbols.push_back(s);
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if(s.auxsymbs>0)
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{
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i+=s.auxsymbs;
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}
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}
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}
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File::~File()
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{
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}
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@ -0,0 +1,3 @@
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#include "lua_Misc.h"
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void lua::RegisterMisc(lua::state &st);
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