elf_reader.go

package main

import (
    "bytes"
    "os"

    "github.com/k0kubun/pp"
    u "github.com/kawakami-o3/undergo"
)

// https://en.wikipedia.org/wiki/Executable_and_Linkable_Format

type Elf struct {
    magicNumber []byte
}

var magicNumber = []byte{0x7f, 0x45, 0x4c, 0x46}

func parse(path string) (*Elf, error) {
    cnt, err := u.ReadBytes(path)
    if err != nil {
        return nil, err
    }
    //elf := p.Println(cnt[1:5])

    buf := bytes.NewBuffer(cnt)
    pp.Println(buf)
    magic := buf.Next(4)
    pp.Println(magicNumber)
    pp.Println(bytes.Equal(magic, magicNumber))

    //for i:=0 ; i<5 ; i++ { fmt.Println(i, }

    return &Elf{cnt}, nil
}

func main() {
    //args := os.Args
    //fmt.Println(os.Args[1:len(args)])
    //fmt.Println(os.Args[1:])

    for _, path := range os.Args[1:] {
        parse(path)
    }
}