mirror of https://github.com/stella-emu/stella.git
89 lines
1.9 KiB
C++
89 lines
1.9 KiB
C++
#include <iostream>
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#include <iomanip>
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#include <fstream>
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#include <sstream>
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#include <cstring>
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#include <cstdlib>
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#include <list>
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using namespace std;
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typedef unsigned char uInt8;
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typedef unsigned int uInt32;
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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int searchForBytes(const uInt8* image, uInt32 imagesize,
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const uInt8* signature, uInt32 sigsize,
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list<int>& locations)
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{
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uInt32 count = 0;
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for(uInt32 i = 0; i < imagesize - sigsize; ++i)
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{
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uInt32 matches = 0;
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for(uInt32 j = 0; j < sigsize; ++j)
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{
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if(image[i+j] == signature[j])
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++matches;
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else
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break;
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}
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if(matches == sigsize)
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{
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++count;
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locations.push_back(i);
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}
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}
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return count;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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int main(int ac, char* av[])
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{
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int offset = 0;
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if(ac < 3)
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{
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cout << "usage: " << av[0] << " <filename> <hex pattern> [start address]\n";
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exit(0);
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}
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if(ac > 3)
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offset = atoi(av[3]);
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ifstream in(av[1], ios_base::binary);
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in.seekg(0, ios::end);
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int i_size = (int) in.tellg();
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in.seekg(0, ios::beg);
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uInt8* image = new uInt8[i_size];
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in.read((char*)(image), i_size);
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in.close();
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int s_size = 0;
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uInt8* sig = new uInt8[strlen(av[2])/2];
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istringstream buf(av[2]);
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uInt32 c;
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while(buf >> hex >> c)
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{
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sig[s_size++] = (uInt8)c;
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// cerr << "character = " << hex << (int)sig[s_size-1] << endl;
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}
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// cerr << "sig size = " << hex << s_size << endl;
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list<int> locations;
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int result = searchForBytes(image+offset, i_size-offset, sig, s_size, locations);
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if(result > 0)
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{
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cout << setw(3) << result << " hits: \'" << av[2] << "\' - \"" << av[1] << "\" @";
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for(list<int>::iterator it = locations.begin(); it != locations.end(); ++it)
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cout << ' ' << hex << ((int)*it + offset);
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cout << endl;
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}
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delete[] image;
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delete[] sig;
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return 0;
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}
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