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tools/symdump: Added new tool to dump symbol offsets from ELF executable
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| package main | ||
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| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "os" | ||
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| "github.com/geek1011/kobopatch/patchlib" | ||
| ) | ||
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| func main() { | ||
| if len(os.Args) != 2 { | ||
| fmt.Fprintln(os.Stderr, "symdump dumps symbol addresses from an ARMv6+ 32-bit ELF executable") | ||
| fmt.Fprintln(os.Stderr, "Usage: symdump BINARY_FILE") | ||
| os.Exit(1) | ||
| } | ||
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| buf, err := ioutil.ReadFile(os.Args[1]) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
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| pt := patchlib.NewPatcher(buf) | ||
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| ds, err := pt.ExtractDynsyms(true) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
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| f, err := os.Create("symdump.out.json") | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
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| fmt.Fprintf(f, "[\n") | ||
| for i, s := range ds { | ||
| if i != 0 { | ||
| fmt.Fprintf(f, ",\n") | ||
| } | ||
| buf, _ := json.Marshal(s) | ||
| f.Write(buf) | ||
| } | ||
| fmt.Fprintf(f, "]\n") | ||
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| f.Close() | ||
| os.Exit(0) | ||
| } |
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Note that this tool works well on all of the other shared libs too, not just libnickel. It should also work with non-kobo libs compiled with different toolchains, but I haven't tested that extensively.