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disasm.go
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disasm.go
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package main
import (
"debug/elf"
"fmt"
"os"
"github.com/hawkowl/biscuit/pkg/disassemble"
"github.com/hawkowl/biscuit/pkg/elfsupport"
)
func openELF(path string) (elfsupport.ELF, error) {
f, err := os.Open(path)
if err != nil {
return nil, err
}
return elfsupport.Open(f)
}
func formatSection(el elfsupport.ELF, p *elf.Prog) ([]string, error) {
opcodes, err := disassemble.Decode(p.Open())
if err != nil {
return nil, err
}
r := make([]string, 0, len(opcodes))
for i, o := range opcodes {
r = append(r, fmt.Sprintf("%#x: %s", p.Vaddr+uint64(i*4), o.String()))
}
return r, nil
}
func main() {
path := os.Args[1]
e, err := openELF(path)
if err != nil {
panic(err)
}
var p *elf.Prog
for _, prog := range e.Progs() {
if e.Entry() == prog.Vaddr {
p = prog
}
}
r, err := formatSection(e, p)
if err != nil {
panic(err)
}
for _, i := range r {
fmt.Println(i)
}
return
}