本文主要向大家介绍了C/C++知识点之elf文件解析测试(cpp 版)，通过具体的内容向大家展示，希望对大家学习C/C++知识点有所帮助。

relocations.cpp

#include <iostream>#include <inttypes.h> // PRIx64 #include ""../elf_parser.hpp""void print_relocations(std::vector<elf_parser::relocation_t> &relocations);int main(int argc, char* argv[]) {
    char usage_banner[] = ""usage: ./sections [<executable>]\n"";    if(argc < 2) {
        std::cerr << usage_banner;        return -1;
    }

    std::string program((std::string)argv[1]);
    elf_parser::Elf_parser elf_parser(program);

    std::vector<elf_parser::relocation_t> relocs = elf_parser.get_relocations();
    print_relocations(relocs);    return 0;
}

void print_relocations(std::vector<elf_parser::relocation_t> &relocations) {    printf(""  [*] %-16s %-16s %-16s %-16s %s\n"", ""Offset"", ""Info"", ""Type"", ""Sym. Value"", ""Sym. Name (section)"");    printf(""  [*] %-16s\n"", ""Calculated PLT Address"");    for (auto &rel : relocations) {        printf(""%016"" PRIx64 ""  %016"" PRIx64 "" %-16s %016"" PRIx64 "" %-16s (%s)\n"",
            rel.relocation_offset,
            rel.relocation_info,
            rel.relocation_type.c_str(),
            rel.relocation_symbol_value,
            rel.relocation_symbol_name.c_str(),
            rel.relocation_section_name.c_str());        printf(""%016"" PRIx64 ""\n"", rel.relocation_plt_address);
    }
}

sections.cpp

#include <iostream>#include <inttypes.h> // PRIx64 #include ""../elf_parser.hpp""void print_sections(std::vector<elf_parser::section_t> &sections);int main(int argc, char* argv[]) {
    char usage_banner[] = ""usage: ./sections [<executable>]\n"";    if(argc < 2) {
        std::cerr << usage_banner;        return -1;
    }

    std::string program((std::string)argv[1]);
    elf_parser::Elf_parser elf_parser(program);

    std::vector<elf_parser::section_t> secs = elf_parser.get_sections();
    print_sections(secs);    return 0;
}

void print_sections(std::vector<elf_parser::section_t> &sections) {    printf(""  [Nr] %-16s %-16s %-16s %s\n"", ""Name"", ""Type"", ""Address"", ""Offset"");    printf(""       %-16s %-16s %5s\n"",                    ""Size"", ""EntSize"", ""Align"");    for (auto &section : sections) {        printf(""  [%2d] %-16s %-16s %016"" PRIx64 "" %08"" PRIx64 ""\n"", 
            section.section_index,
            section.section_name.c_str(),
            section.section_type.c_str(),
            section.section_addr, 
            section.section_offset);        printf(""       %016zx %016"" PRIx64 "" %5"" PRIu64 ""\n"",
            section.section_size, 
            section.section_ent_size,
            section.section_addr_align);
    }
}

segments.cpp

#include <iostream>#include <inttypes.h> // PRIx64 #include ""../elf_parser.hpp""void print_segments(std::vector<elf_parser::segment_t> &segments);int main(int argc, char* argv[]) {
    char usage_banner[] = ""usage: ./sections [<executable>]\n"";    if(argc < 2) {
        std::cerr << usage_banner;        return -1;
    }

    std::string program((std::string)argv[1]);
    elf_parser::Elf_parser elf_parser(program);

    std::vector<elf_parser::segment_t> segs = elf_parser.get_segments();
    print_segments(segs);    return 0;
}

void print_segments(std::vector<elf_parser::segment_t> &segments) {    printf(""  %-16s  %-16s   %-16s   %s\n"", ""Type"", ""Offset"", ""VirtAddr"", ""PhysAddr"");    printf(""  %-16s  %-16s   %-16s  %6s %5s\n"", "" "", ""FileSiz"", ""MemSiz"", ""Flags"", ""Align"");    for (auto &segment : segments) {        printf(""   %-16s 0x%016"" PRIx64 "" 0x%016"" PRIx64 "" 0x%016"" PRIx64 ""\n"",
                segment.segment_type.c_str(), 
                segment.segment_offset,
                segment.segment_virtaddr, 
                segment.segment_physaddr);        printf(""   %-16s 0x%016"" PRIx64 "" 0x%016"" PRIx64 "" %-5s %-5"" PRIx64 ""\n"", """",
                segment.segment_filesize, 
                segment.segment_memsize,
                segment.segment_flags.c_str(), 
                segment.segment_align);
    }
}

symbols.cpp

#include <iostream>#include <inttypes.h> // PRIx64 #include ""../elf_parser.hpp""void print_symbols(std::vector<elf_parser::symbol_t> &symbols);

int main(int argc, char* argv[]) {
    char usage_banner[] = ""usage: ./sections [<executable>]\n"";    if(argc < 2) {
        std::cerr << usage_banner;        return -1;
    }

    std::string program((std::string)argv[1]);
    elf_parser::Elf_parser elf_parser(program);

    std::vector<elf_parser::symbol_t> syms = elf_parser.get_symbols();
    print_symbols(syms);    return 0;
}

void print_symbols(std::vector<elf_parser::symbol_t> &symbols) {
    printf(""Num:    Value  Size Type    Bind   Vis      Ndx Name\n"");    for (auto &symbol : symbols) {
        printf(""%-3d: %08"" PRIx64 ""  %-4d %-8s %-7s %-9s %-3s %s(%s)\n"",
                symbol.symbol_num, 
                symbol.symbol_value,
                symbol.symbol_size, 
                symbol.symbol_type.c_str(),
                symbol.symbol_bind.c_str(),
                symbol.symbol_visibility.c_str(),
                symbol.symbol_index.c_str(),
                symbol.symbol_name.c_str(),
                symbol.symbol_section.c_str());     
    }
}

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